MLI


Line plots across dimensions of each concept
Line plots across concepts
Tables

Table of contents



us-gaap:CommonStockValue
us-gaap:StatementEquityComponents
us-gaap:SharesIssued

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:CostOfGoodsAndServicesSold
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:GainsLossesOnExtinguishmentOfDebt
us-gaap:LongtermDebtType

us-gaap:GrossProfit
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeTaxExpenseBenefit
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:InterestExpense

us-gaap:NetIncomeLoss
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:OperatingIncomeLoss
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherNonoperatingIncomeExpense
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ProfitLoss
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:ProductOrService
us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:SellingGeneralAndAdministrativeExpense
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:Assets
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity

us-gaap:AssetsCurrent
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:AccountsReceivableNetCurrent

us-gaap:InventoryNet

us-gaap:InventoryFinishedGoods

us-gaap:InventoryRawMaterialsAndSupplies

us-gaap:OtherAssetsCurrent

us-gaap:NoncurrentAssets
us-gaap:StatementGeographical
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee
us-gaap:AssetsNoncurrent

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures

us-gaap:Goodwill
mli:AssetAcquisition
us-gaap:StatementBusinessSegments

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent

us-gaap:AccountsPayableCurrent

us-gaap:DebtCurrent

us-gaap:LiabilitiesCurrent
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:LongTermDebtCurrent

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OtherLiabilitiesCurrent

us-gaap:TaxesPayableCurrent
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee
us-gaap:LiabilitiesNoncurrent

us-gaap:LongTermDebt

us-gaap:LongTermDebtNoncurrent

us-gaap:DeferredIncomeTaxLiabilitiesNet
us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:MinorityInterest

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapital

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:TreasuryStockValue

us-gaap:MinorityInterest
us-gaap:StatementEquityComponents
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DepreciationDepletionAndAmortization
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInInventories

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:ProfitLoss
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquireProductiveAssets

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:PaymentsOfDividends
us-gaap:StatementEquityComponents
us-gaap:Dividends

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:EffectiveIncomeTaxRateContinuingOperations
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsValuationAllowance
mli:AssetAcquisition
mli:AssetAcquisitionConsiderationTransferred
mli:AssetAcquisition, us-gaap:SubsequentEventType
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:Position
mli:GainLossOnFairValueOfFutureContracts
us-gaap:EnvironmentalRemediationSite, us-gaap:PropertyPlantAndEquipmentByType
mli:NumberOfSurroundingProperties

mli:OtherComprehensiveIncomeLossAttributableToUnconsolidatedAffiliatesNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

mli:OtherComprehensiveIncomeLossAttributableToUnconsolidatedAffiliatesTax

mli:PaymentsForIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions
us-gaap:EnvironmentalRemediationSite, us-gaap:PropertyPlantAndEquipmentByType
mli:SiteContingencyPropertiesLossExposureNotAccruedBestEstimate

us-gaap:AssetImpairmentCharges
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
mli:AssetAcquisition
us-gaap:BusinessCombinationConsiderationTransferred1
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentIntangibles
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentPropertyPlantAndEquipment
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanInterestCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanServiceCost

us-gaap:Depreciation
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation
us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
us-gaap:Range, us-gaap:EnvironmentalRemediationSite, us-gaap:PropertyPlantAndEquipmentByType
us-gaap:EnvironmentalExitCostsReasonablyPossibleAdditionalLoss

us-gaap:GainLossOnSaleOfPropertyPlantEquipment

us-gaap:GainLossRelatedToLitigationSettlement
us-gaap:ConsolidationItems
us-gaap:BusinessAcquisition
us-gaap:GoodwillPurchaseAccountingAdjustments

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncomeTaxReconciliationForeignIncomeTaxRateDifferential

us-gaap:IncomeTaxReconciliationOtherAdjustments

us-gaap:IncomeTaxReconciliationStateAndLocalIncomeTaxes

us-gaap:IncreaseDecreaseInOtherCurrentLiabilities

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities

us-gaap:IncreaseDecreaseInOtherOperatingAssets
us-gaap:EnvironmentalRemediationSite
us-gaap:LossContingencyLossInPeriod
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:IncomeStatementLocation
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax
us-gaap:BusinessAcquisition
us-gaap:PaymentForContingentConsiderationLiabilityOperatingActivities
us-gaap:BusinessAcquisition
us-gaap:PaymentsToAcquireBusinessesGross

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:PaymentsToAcquireInterestInJointVenture

us-gaap:PaymentsToAcquireNotesReceivable

us-gaap:ProceedsFromIssuanceOfDebt

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment

us-gaap:ProvisionForDoubtfulAccounts
us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
us-gaap:RedemptionPremium
us-gaap:LongtermDebtType
us-gaap:RepaymentsOfSubordinatedDebt
us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardGross
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised
us-gaap:StatementEquityComponents
us-gaap:StockRepurchasedDuringPeriodValue

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

mli:AccruedDiscountsAndAllowancesLiabilityCurrent
us-gaap:DerivativeInstrumentRisk
mli:AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromDerivativeInstrumentsEffectNetOfTax

mli:ApproximatePercentageOfMutualFundsActivelyManaged

mli:ApproximatePercentageOfMutualFundsIndexedFunds
mli:AssetAcquisition
mli:AssetAcquisitionGoodwillAndIntangibleAssets
mli:AssetAcquisition
mli:AssetAcquisitionTangibleAssets
mli:AssetAcquisition
mli:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAsset

mli:DeferredTaxAssetTaxCreditFederalAndForeign

mli:DeferredTaxAssetTaxCreditStateAndLocal

mli:DeferredTaxAssetsOperatingLeaseLiability

mli:DeferredTaxAssetsTaxDeferredExpenseBasisDifferenceInUnconsolidatedAffiliates

mli:DeferredTaxLiabilitiesOperatingLeaseRightofUseAsset
us-gaap:RetirementPlanType
mli:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfInflation
us-gaap:RetirementPlanType
mli:DefinedBenefitPlanExpectedFutureBenefitPaymentsTotal

mli:FederalAndForeignTaxAttributesWithPotentialTaxBenefits

mli:FederalAndForeignTaxAttributesWithPotentialTaxBenefitsUnlimitedLife

mli:FederalAndForeignTaxAttributesWithPotentialTaxBenefitsValuationAllowance

mli:FifoValueOfInventoryConsignedToOthers

mli:LongTermDebtIncludingUnamortizedDiscountPremiumAndDebtIssuanceCosts
us-gaap:LongtermDebtType
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:Position
mli:OpenOptionContractsPutAtFairValue

mli:OtherTaxCarryforwardNetAmount

mli:PercentOfMutualFundsAssetsInvestedInNonUsEquities

mli:PercentageOfMutualFundsAssetsInvestedInUSEquities

mli:StateIncomeTaxCreditCarryforwards

mli:StateTaxCreditsAndNetOperatingCarryforwardsOffsetByValuationAllowances

mli:TemporaryInvestments
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
mli:UkBenefitObligationPercentage
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
mli:UkPensionPlanAssetPercentage

us-gaap:AccrualForEnvironmentalLossContingencies
us-gaap:EnvironmentalRemediationSite

us-gaap:AccrualForEnvironmentalLossContingenciesUndiscountedDueAfterFifthYear

us-gaap:AccrualForEnvironmentalLossContingenciesUndiscountedDueInFifthYear

us-gaap:AccrualForEnvironmentalLossContingenciesUndiscountedDueInFourthYear

us-gaap:AccrualForEnvironmentalLossContingenciesUndiscountedDueInSecondYear

us-gaap:AccrualForEnvironmentalLossContingenciesUndiscountedDueInThirdYear

us-gaap:AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinOneYear

us-gaap:AccruedEnvironmentalLossContingenciesNoncurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent
mli:AssetAcquisition
us-gaap:BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount
us-gaap:BusinessAcquisition
mli:AssetAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets
us-gaap:BusinessAcquisition
mli:AssetAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
mli:AssetAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass
mli:AssetAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory
us-gaap:BusinessAcquisition
mli:AssetAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
mli:AssetAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
us-gaap:BusinessAcquisition
mli:AssetAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet

us-gaap:DebtIssuanceCostsLineOfCreditArrangementsNet

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsInventory

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DefinedBenefitPensionPlanLiabilitiesNoncurrent
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanBenefitObligation

us-gaap:DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets
us-gaap:DefinedBenefitPlanByPlanAssetCategories
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:RetirementPlanType
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanFundedStatusOfPlan
us-gaap:Range
us-gaap:DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations
us-gaap:Range, us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType

us-gaap:DepositLiabilitiesAccruedInterest
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeAssetFairValueGrossLiability
us-gaap:HedgingDesignation
us-gaap:DerivativeAssets

us-gaap:DerivativeCollateralObligationToReturnCash
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeFairValueOfDerivativeAsset
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeFairValueOfDerivativeLiability
us-gaap:HedgingDesignation
us-gaap:DerivativeLiabilities

us-gaap:DerivativeLiabilitiesCurrent
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeLiabilityFairValueGrossAsset

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:EquityMethodInvestmentOwnershipPercentage

us-gaap:FIFOInventoryAmount
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:LossContingenciesByNatureOfContingency
us-gaap:GainContingencyUnrecordedAmount

us-gaap:GoodwillGross
us-gaap:StatementBusinessSegments

us-gaap:GuaranteeObligationsMaximumExposure

us-gaap:InventoryAdjustments

us-gaap:InventoryWorkInProcess

us-gaap:LIFOInventoryAmount

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
us-gaap:LineOfCreditFacility
us-gaap:LettersOfCreditOutstandingAmount
us-gaap:LineOfCreditFacility
us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity
us-gaap:LongtermDebtType

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
us-gaap:Ownership
us-gaap:MinorityInterestOwnershipPercentageByNoncontrollingOwners
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:Position
us-gaap:OpenOptionContractsWrittenAtFairValue

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLossCarryforwards

us-gaap:OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent
us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities

us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue

us-gaap:RestrictedCashAndCashEquivalentsNoncurrent

us-gaap:RestrictedCashEquivalentsNoncurrent

us-gaap:SalesAndExciseTaxPayableCurrent
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber
us-gaap:AwardType
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding
us-gaap:AwardType
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1

us-gaap:TreasuryStockShares
us-gaap:ValuationAllowancesAndReservesType
us-gaap:ValuationAllowancesAndReservesBalance

Plots across concepts


IncomeStatement
Other Comprehensive Income Loss Net Of Tax
Expenses
Other Nonoperating Income Expense
Balance Sheet
Operating Lease Right Of Use Asset
Assets
Operating Lease Right Of Use Asset
Current Assets
Other Assets Current
NonCurrent Assets
Other Assets Noncurrent
PropertyPlantAndEquipmentNet
Property Plant And Equipment Net
Liabilities
Operating Lease Liability
Current Liabilities
Taxes Payable Current
Noncurrent Liabilities
Deferred Income Tax Liabilities Net
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
CashFlow
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInOperatingActivities
Gain Loss On Sale Of Property Plant Equipment
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Treasury Stock Shares
OperatingLeaseLiability
Operating Lease Liability Current
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Due Year Four
InventoryNet
Inventory Finished Goods
AccountsReceivable
Allowance For Doubtful Accounts Receivable Current

Tables

  2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
us-gaap:CommonStockValue ██████████████████████████████▁▁▁▁▁▁▁▁▁▁▁▁▁0.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.4010.4010.4010.4010.4010.4010.4010.4010.4010.4010.4010.4010.401NANANA
 us-gaap:SharesIssued us-gaap:StatementEquityComponents us-gaap:CommonStockNANA80.183NANANA80.183NANA80.18380.183NANA80.18380.183NANANA80.183NANANA80.183NANANA80.183NANANA40.092NANANA40.092NANANA40.092NANANA40.092NANANA
 us-gaap:SharesIssued us-gaap:StatementEquityComponents us-gaap:TreasuryStockNANA23.096NANANA23.234NANA23.55723.48NANA22.61822.373NANANA22.788NANANA23.024NANANA23.282NANANA11.789NANANA11.992NANANA1.855NANANA2.237NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding █▁56.81256.672NA56.36656.19456.458NA56.31456.31456.254NA57.41757.31157.417NA57.44357.41757.438NA57.21756.92956.962NA56.97356.9956.924NA56.74456.7256.771NA28.25528.2128.196NA37.95738.46538.458NA38.3610.03809337.986NA37.8020.03771737.682
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▁55.94655.916NA55.81655.72355.875NA55.83255.75355.728NA56.87756.79756.9NA56.98756.90656.78NA56.63156.51156.467NA56.37556.24756.193NA56.10755.97355.918NA27.89427.8427.822NA37.50538.02938.014NA37.8780.03773737.723NA37.710.03767437.588
us-gaap:EarningsPerShareBasic ▅▃▂▂▂▂▂▂▂▁▂▂▂▂▁▂▂▂▁▂▂▂▁▁▂▂▁▂▂▂▂▄█▃▂▂▂▃▂▁▂▃▂▂▂▃1.951.130.650.770.50.580.50.520.50.280.470.360.580.420.10.390.490.530.310.460.490.510.260.320.60.390.320.420.630.440.551.433.270.940.590.410.470.860.340.280.591.080.470.50.410.9
us-gaap:EarningsPerShareDiluted ▅▃▂▂▂▂▂▂▂▁▂▂▂▂▁▂▂▂▁▂▂▂▁▁▂▂▁▂▂▂▂▄█▃▂▂▂▃▂▁▂▃▂▂▂▃1.921.110.640.760.50.570.50.520.50.280.470.350.580.420.10.390.480.520.30.450.490.50.250.310.590.390.320.420.620.440.541.413.230.930.580.410.470.850.340.270.591.070.470.50.410.9
  2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
 COGS Ratio us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,mli:Climate█▇▅▆▅▅▄▅▆▅▄▅▂▂▁▁▂131.708111.02693.14897.60486.10793.27279.36390.93896.08189.83472.21581.61939.17236.06328.04532.48836.636NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 COGS Ratio us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,mli:IndustrialMetals█▇▄▃▁▄▃▅▆▆▅▆██▆▆▆180.04164.852133.507118.83188.619131.202120.335135.443147.719150.875139.129158.709175.891177.332150.212147.578154.504NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 COGS Ratio us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,mli:PipingSystems█▅▃▂▁▂▁▂▃▂▁▂▃▃▁▂▃711.616547.748454.535409.414334.04385.013349.182390.917425.865376.492350.961410.525453.183430.964359.253384.078422.844NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Gross Margin us-gaap:EquityMethodInvestmentNonconsolidatedInvestee us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees▅▄▄▁▅▅▇█▇103.83497.329100.52173.85103.55106.998125.292129.589120.062NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,mli:Climate█▇▅▆▅▅▅▅▆▅▄▅▂▂▁▁▂▂▁▁▁▁▁▁▁▁131.708111.02693.14897.60486.10793.27279.36390.93896.08189.83472.21581.61939.17236.06328.04532.48836.63634.27927.6930.00331.35930.70624.92428.49431.49825.811NANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,mli:IndustrialMetals█▇▄▃▁▄▃▅▆▆▅▆██▆▆▆▆▄▄▄▅▄▅▅▆180.04164.852133.507118.83188.619131.202120.335135.443147.719150.875139.129158.709175.891177.332150.212147.578154.504149.837127.452131.35127.737134.521131.731139.472145.228151.036NANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,mli:PipingSystems█▅▃▃▁▂▂▂▃▂▂▃▃▃▂▂▃▂▁▂▂▂▁▂▂▂711.616547.748454.535409.414334.04385.013349.182390.917425.865376.492350.961410.525453.183430.964359.253384.078422.844398.775320.48351.557388.662368.89327.565367.892379.75361.482NANANANANANANANANANANANANANANANANANANANA
 SG&A Ratio us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,mli:Climate█▇▅▆▅▅▅▅▆▅▄▅▂▂▁▁▂▂▁▁▁▁▁▁▁▁131.708111.02693.14897.60486.10793.27279.36390.93896.08189.83472.21581.61939.17236.06328.04532.48836.63634.27927.6930.00331.35930.70624.92428.49431.49825.811NANANANANANANANANANANANANANANANANANANANA
 SG&A Ratio us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,mli:IndustrialMetals█▇▄▃▁▄▃▅▆▆▅▆██▆▆▆▆▄▄▄▅▄▅▅▆180.04164.852133.507118.83188.619131.202120.335135.443147.719150.875139.129158.709175.891177.332150.212147.578154.504149.837127.452131.35127.737134.521131.731139.472145.228151.036NANANANANANANANANANANANANANANANANANANANA
 SG&A Ratio us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,mli:PipingSystems█▅▃▃▁▂▂▂▃▂▂▃▃▃▂▂▃▂▁▂▂▂▁▂▂▂711.616547.748454.535409.414334.04385.013349.182390.917425.865376.492350.961410.525453.183430.964359.253384.078422.844398.775320.48351.557388.662368.89327.565367.892379.75361.482NANANANANANANANANANANANANANANANANANANANA
  2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
 TTM Greenblatt ROC _ _█▅▃▄▃▃▂▂▃▃▂▂▃▂▁▂▂▂▂▂▂▂▁▁▃▂▂▂▂▂▁▃▇▂▁▁▂▂▁▁▂▃▂157.81492.5465.00469.22752.29659.31144.44946.25251.52249.1839.96233.67151.92847.40821.98837.55946.80345.60729.32337.48744.43641.46718.96327.02755.55435.72429.75937.72648.20438.30722.03767.21144.34737.34325.54424.45729.84246.86221.14918.86436.5563.23929.23NANANA
  2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
us-gaap:ComprehensiveIncomeNetOfTax █▆▅▅▃▂▄▃▃▃▂▂▃▃▂▃▃▄▂▃▃▃▂▂▄▂▁▃▄▃▄▄▇▃▂▃▂▄▂▂▃▄▂▃▃109.09869.46262.64851.3928.32211.0239.22324.02426.11322.63410.02315.43422.69627.0149.04128.33529.2234.9028.76727.04821.87330.07314.5286.91439.92215.472-9.6317.24337.10324.7443.89246.91292.83220.76711.72721.41913.76640.2092.2330.97424.17146.57914.69924.6315.922NA
us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest ▆▇▇▇▄▅▇▅▃▆▅▄▅▄▅▅▄▅▁▅▄▃▃▃▃▃▄▅▃▄▄▄▆▄█▄▅▅▄▅▅▄▅▄▄1.3332.5522.5852.207-0.090.9452.5660.857-0.4331.620.4820.0340.670.3930.7830.4990.3861.117-2.1660.48-0.123-0.739-0.333-0.709-0.52-0.3450.2740.889-0.5940.253-0.2090.1861.2280.1992.9740.040.4510.5790.2070.7370.7550.2150.8180.0340.366NA
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest █▆▅▅▃▂▄▃▃▃▂▂▃▃▂▃▃▄▂▃▃▃▂▂▄▂▁▃▄▃▄▄▇▃▂▃▂▄▂▂▃▄▂▃▂110.43172.01465.23353.59728.23211.96541.78924.88125.6824.25410.50515.46823.36627.4079.82428.83429.60636.0196.60127.52821.7529.33414.1956.20539.40215.127-9.35618.13236.50924.99343.68347.09894.0620.96614.70121.45914.21740.7882.441.71124.92646.79415.51724.66416.288NA
us-gaap:CostOfGoodsAndServicesSold █▆▄▃▁▃▂▃▄▃▂▄▄▄▂▂▃799.712668.418553.507500.78403.159508.715449.481510.788563.948511.393473.954566.956563.82545.67456.617471.262524.311NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:GainsLossesOnExtinguishmentOfDebt -5.674NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:LongtermDebtType us-gaap:SubordinatedDebt-5.7NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:GrossProfit NANA122.344118.32597.00994.20494.35897.814102.446100.38885.13379.00298.95394.3966.90779.10189.95589.49376.02981.91688.01186.16760.64768.01785.22876.40868.45381.54291.91678.59765.90372.55281.15776.8465.28764.44771.24884.49363.44261.82579.04697.80769.3869.64373.74372.22
 us-gaap:GrossProfit us-gaap:EquityMethodInvestmentNonconsolidatedInvestee us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees▆▂█▁▃▅█▇▆15.3239.69918.2747.56511.02213.48618.15517.00615.327NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments █▅▂▄▃▃▂▂▃▃▂▂▃▃▁▂▂▃▂▂▃▂▁▂▃▂▂▂▃▂▂▄█▂▂▂▂▃▁▁▂▄▂▂▂▃150.95788.64839.95864.86450.15754.2138.44140.63744.95142.05434.58127.33646.44142.05910.88931.86440.59243.62727.1335.77743.25939.86418.92725.50953.633.75327.24936.52146.87437.36921.11466.809143.56539.9123.94124.32327.61144.47919.08716.14433.9860.9525.84927.84523.49344.663
us-gaap:IncomeTaxExpenseBenefit ▆▄▂▃▂▃▂▂▂▂▂▁▂▂▁▂▂▂▂▂▃▃▂▁▃▂▂▂▂▂▁▄█▂▂▂▂▂▁▁▂▃▂▂▂▂39.00621.76112.69815.4513.02914.1447.6147.66510.4329.5467.7733.37312.4117.3954.5898.71612.6511.9299.17410.83714.00514.1217.0085.22319.73811.4139.212.19911.66512.4156.09426.81651.72313.4767.1958.7539.07111.6626.0155.40311.24920.4087.8979.0987.4569.864
us-gaap:InterestExpense ▃▅▅▆▆▆▆▇██▇█▇▇▆▆▇▃▃▃▂▃▂▂▃▃▃▂▂▂▂▂▂▁▂▁▃▃▃▄▄▄▄▄▄▃1.8664.4694.014.8854.9735.3795.5486.1487.0336.9546.4716.7466.0735.9095.2925.2376.4422.5312.0171.831.6921.8481.691.6822.2192.0761.8271.431.4571.0261.051.2431.1010.5961.1790.3532.7212.6372.5492.8222.8343.3483.0793.0722.9642.532
us-gaap:NetIncomeLoss █▅▃▄▃▃▃▃▃▂▂▂▃▂▁▂▂▃▂▂▂▃▂▂▃▂▂▂▃▂▂▃▇▂▂▂▂▃▁▁▂▃▂▂▂▃108.83263.10736.4242.70227.95632.41528.1729.09327.98615.72326.85720.29233.18224.1285.7222.25827.63329.98717.32225.97827.79728.6314.43517.833.65121.97817.98723.82335.04524.70615.38439.86491.1526.20216.36815.51117.91732.59912.92810.47522.33140.58717.74618.90915.55833.958
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest ██▅▆▄▆▇▆▄▆▅▄▄▃▃▄▃▄▁▃▁▃▂▃▃▃▃▄▃▃▁▃▄▃▃▃▄▂▃▃▃▂▃▂▄▅2.12.1310.8341.2550.5311.5361.8031.3510.691.4160.8740.5710.70.2160.2490.4960.20.468-0.5540.084-0.4620.035-0.3250.2950.2110.3620.0630.4990.1640.248-0.3640.1290.6920.2320.3780.0590.623-0.2180.1440.2660.4-0.0450.206-0.1620.4790.841
us-gaap:OperatingIncomeLoss █▅▃▄▃▃▂▂▃▃▂▂▃▂▁▂▂▂▂▂▂▂▁▁▃▂▂▂▂▂▁▃▇▂▁▁▂▂▁▁▂▃▂▂▂▂157.81492.5465.00469.22752.29659.31144.44946.25251.52249.1839.96233.67151.92847.40821.98837.55946.80345.60729.32337.48744.43641.46718.96327.02755.55435.72429.75937.72648.20438.30722.03767.21144.34737.34325.54424.45729.84246.86221.14918.86436.5563.23929.2330.88728.97547.055
us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax ▁▅▅▅█▁▅▄▄▆-3.3370.4930.3160.1513.398-3.3570.557-0.195-0.9291.257NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax us-gaap:DerivativeInstrumentRisk,us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship us-gaap:CommodityContract,us-gaap:CashFlowHedging▁█-1.4751.491NA0.337-1.715-3.706NA0.13-0.7331.352NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax us-gaap:DerivativeInstrumentRisk,us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship us-gaap:OtherContract,us-gaap:CashFlowHedging▁█-0.009-0.003NA-0.0060.037-0.029NA0.0080.022-0.016NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship us-gaap:CashFlowHedging▁█-1.4841.488NA0.331-1.678-3.735NA0.138-0.7111.336NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax ▅▅█▆▅▁▆▃▄▅▃▅▃▅▄▆▅▆▂▄▃▄▄▂▆▃▄▃▅▅▅▆▄▄▅▅▄▆3.5154.38721.8649.320.421-21.25511.021-6.692-2.9776.057-11.3421.111-11.6224.977-2.0967.1540.9067.21-12.166-4.304-10.186-1.111-5.607-12.1537.056-8.404-3.068-6.6611.7951.1672.5156.738-0.644-5.3240.8984.973-4.5456.744NA-6.389NANANANANANA
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▄▅█▆▄▂▆▄▄▅▂▄▃▅▅▅▅▅▃▅▄▅▄▃▅▄▁▄▅▄█▅▅▄▄▅▄▅-0.5016.77627.9799.64-0.255-21.98611.816-5.563-2.9967.115-17.226-5.395-10.5163.0633.8556.081.7735.564-10.1671.466-6.5090.6690.085-11.895.54-7.213-27.405-6.191.30.03928.6637.1052.218-5.468-2.0455.889-4.3237.971NA-9.03NANANANANANA
 us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents mli:AccumulatedOtherComprehensiveIncomeAttributabletoUnconsolidatedAffiliates▁█-0.7531.987NA0.339-2.791.887NA0.5470.2340.047-1.499-6.9070.121-0.401NA-0.7351.247-1.598NA5.112NANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents us-gaap:AccumulatedDefinedBenefitPlansAdjustment█▁0.074-0.091NA-0.17-1.2840.739NA0.7770.676-0.246-4.1080.270.95-0.451NA-0.207-0.4050.04NA0.743NANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents us-gaap:AccumulatedGainLossNetCashFlowHedgeParent▁█-3.3370.493NA0.1513.398-3.357NA-0.195-0.9291.257NA0.131NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents us-gaap:AccumulatedOtherComprehensiveIncome▄▅█▅▄▁▆▃▄▅▂▃▃▅▅▅▄▅▃▄0.2666.35526.2288.6880.366-21.39511.053-5.069-1.8736.911-16.835-4.856-10.4872.8863.3216.0771.5874.915-8.5551.071NANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents us-gaap:AccumulatedTranslationAdjustment█▁4.2823.966NA8.3681.042-20.664NA-6.198-1.8545.853-10.9511.65-11.5934.8NA7.1510.726.561NA-4.699NANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherNonoperatingIncomeExpense ▅▅▆▅█▄▅▅▅▄▇▅▅▅▆▄▄▅▄▄▅▄▆▄▄▄▃▄▄▄▄▅▄█▄▄▅▄▅▄▄▅▄▄▁▄0.6830.5771.2530.5222.8340.2780.8610.5330.462-0.1722.410.4110.5860.561.477-0.4580.2310.551-0.1760.120.5150.2451.6540.1640.2650.105-0.6830.2250.1270.0880.1270.8420.3193.163-0.4240.2190.490.2540.4870.1020.2641.059-0.3020.03-2.5180.14
us-gaap:ProfitLoss █▅▃▄▃▃▃▃▃▂▂▂▃▂▁▂▂▃▂▂▂▃▂▂▃▂▂▂▃▂▂▃▇▂▂▂▂▃▁▁▂▃▂▂▂▃110.93265.23837.25443.95728.48733.95129.97330.44428.67617.13927.73120.86333.88224.3445.96922.75427.83330.45516.76826.06228.25928.66514.1118.09533.86222.3418.04924.32235.20924.95415.0239.99391.84226.43416.74615.5718.5432.81713.07210.74122.73140.54217.95218.74716.03734.799
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax █▅▄▃▁▃▂▃▄▃▂▃▃▃▂▂▃▂▁▁▂▂▁▂▂▂▂▃▃▂▁▂▂▂▁▂▃▂▁▂▃▄▂▁▂▁1012.592818.148675.851619.105500.168602.919543.839608.602666.394611.781559.087645.958662.773640.06523.524550.363614.266577.92472.158506.584544.071532.809471.983535.184555.593537.242537.342602.82649.691574.374487.715528.854582.282559.69504.006514.165594.099577.668491.384585.809652.923687.681526.901507.24540.388485.268
us-gaap:SellingGeneralAndAdministrativeExpense ▇██▅▃▇▆▆▆▆▄▅▅▃▄▃▃▄▄▃▃▄▂▂▃▃▁▄▄▂▄▃▄▂▂▂▃▂▃▃▃▄▂▁▃▅43.93245.43544.76938.34633.61642.75240.5240.73940.44640.65336.81138.88938.42834.05736.62733.27634.55735.53134.79232.41334.51435.7831.86632.24133.4232.83129.57334.86435.1232.18335.83632.92134.81431.34332.24732.1233.48731.60233.00934.24533.3335.36931.6128.8133.46837.323
  2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
  2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
us-gaap:Assets █▇▆▅▄▅▄▄▅▅▄▅▅▄▄▃▃▃▅▅▅▄▄▄▄▄▄▄▄▃▃▃▃▂▂▁▃▅▄▄▄▄▃1789.4371698.3291528.5681420.0121323.391445.9391370.941402.7651417.0681475.0531369.5491421.7431496.3841336.8441320.1731249.2241297.2641304.9211447.4761426.1211420.4751361.021338.8011373.5261344.9581324.831328.0961327.7361349.8581282.8291247.7671260.6211209.8751142.9131104.1551039.4161272.441445.9621347.6041358.911358.5441382.0121258.996NANANA
us-gaap:Liabilities ▇▇▆▅▅▆▅▆▇█▇▇█▆▆▆▆▆▃▃▃▃▃▃▃▃▃▃▄▃▃▄▄▄▄▃▁▃▂▃▃▃▂815.521830.316727.508680.661633.186780.639708.804778.169812.706893.131806.289838.335924.295783.779784.145719.187791.258798.176511.039489.517501.703474.538479.099525.343500.299517.028532.662520.163556.914524.647511.9566.201560.232586.454566.189514.306337.993523.244462.842473.854476.108522.337443.099NANANA
us-gaap:LiabilitiesAndStockholdersEquity █▇▆▅▄▅▄▄▅▅▄▅▅▄▄▃▃▃▅▅▅▄▄▄▄▄▄▄▄▃▃▃▃▂▂▁▃▅▄▄▄▄▃1789.4371698.3291528.5681420.0121323.391445.9391370.941402.7651417.0681475.0531369.5491421.7431496.3841336.8441320.1731249.2241297.2641304.9211447.4761426.1211420.4751361.021338.8011373.5261344.9581324.831328.0961327.7361349.8581282.8291247.7671260.6211209.8751142.9131104.1551039.4161272.441445.9621347.6041358.911358.5441382.0121258.996NANANA
us-gaap:StockholdersEquity █▆▆▅▄▄▄▃▃▂▂▂▂▂▂▂▁▁▇▇▇▇▆▆▆▅▅▅▅▅▄▄▃▂▂▁▇▇▇▇▇▆▆945.716841.146776.745717.621670.681645.687643.468607.648588.271565.398548.356568.986557.701538.755522.111516.903493.371467.875898.684893.772872.655854.804827.285815.433811.2774.863762.15774.562760.823725.469703.405661.749617.158525.202506.908495.047904.343893.065855.688856.189854.305832.299788.736NANANA
  2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
us-gaap:AssetsCurrent ▇▆▃▂▁▃▁▂▂▃▁▂▅▂▂▁▂▂▄▄▄▃▃▃▅▅▅▅▅▄▄▅▄▃▂▁▅█▇▇▆▇▅1081.995986.535825.361729.865670.691774.126693.772730.709734.504784.533702.618761.204937.513762.827739.115692.828743.751756.085894.323873.594865.723820.761800.401825.499930.772941.131941.213924.178946.046885.213874.717924.343848.306785.157747.194689.509944.051122.221026.6991032.7961016.5631035.096912.314NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▂▂▂▂▂▂▁▁▁▁▁▁▄▁▂▂▂▂▅▄▄▄▄▃▄▅▅▄▄▃▅▅▄▃▃▂▆██▇▅▆▆▆▆▆110.681129.876119.075113.64123.61154.28397.944100.33891.4497.59672.616104.735281.44591.573120.269106.344167.555146.891351.317297.793283.161270.149274.844220.745299.147326.894352.134259.858242.199233.475311.8322.177261.667183.866198.934165.755373.68526.885514.162448.853345.039413.922394.139400.116397.155397.18
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▃▃▃▂▃▄▂▂▂▂▁▂█▂▃▂▄125.722149.031127.376114.379124.512171.96498.042102.50394.07299.00677.138109.049284.44893.758126.563110.307172.057NA360.469NANANA278.664NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AccountsReceivableNetCurrent █▆▄▃▂▃▂▃▃▃▂▂▃▃▁▂▂▃▁▂▂▂▁▂▂▂▂▃▄▃▂▃▂▃▂▁▂▃▁▃▃▄▂542.044447.492357.532320.035273.71308.836269.943319.562316.806309.765273.417308.231333.903321.756244.795276.678287.829312.095256.291295.672305.332275.881251.571299.417307.008307.984275.065332.508367.299319.902271.847312.919305.706311.601271.093261.015299.264315.346250.027315.709327.381353.321269.258NANANA
us-gaap:InventoryNet █▇▅▃▂▃▄▄▅▆▆▅▄▆▆▄▃▃▂▃▃▂▂▃▄▂▃▄▄▄▃▂▂▂▂▂▂▂▁▁▄▂▁384.982365.457315.002271.31244.414270.119292.107277.567300.391344.85329.795313.396294.54329.231327.901284.114252.799251.958242.013251.13249.954240.608239.378250.799278.937246.395256.585282.493291.138279.465251.716234.081222.825228.211229.434224.358229.338236.31219.193214.868296.999231.27209.892NANANA
us-gaap:InventoryFinishedGoods ▇█▆▃▁▃▄▂▄▇▆▅▄▅▆▄▄▄▂▃▃▃▃▄▄▄▄▆▆▆▃▁▂▄▂▃▃▄▁▄▆197.006201.748186.785159.674140.065154.913163.842149.949164.134190.033188.506171.725169.047178.115180.143165.09162.789163.839149.288157.128154.593154.592161.41162.78163.497167.033168.481180.377181.407186.483159.422142.71150.255167.334148.014160.497154.521166.452143.648166.863179.82NA131.921NANANA
us-gaap:InventoryRawMaterialsAndSupplies ██▆▅▄▅▆▅▆▇▆▆▅▆▇▅▅▅▄▅▅▄▄▄▅▄▄▅▄▄▄▄▃▃▄▄▄▃▃▁▄122.931119.19685.92778.2160.81575.40785.76969.66881.804101.4289.64187.60575.30794.633108.39777.74365.73966.4357.38763.91564.20653.98358.98755.52270.48753.32753.58663.43853.94848.71154.61349.70533.38228.95746.11446.74651.52243.34942.2812.99857.532NA47.737NANANA
us-gaap:OtherAssetsCurrent ▅▅▄▂▃▅▄▄▂▃▃▄▃▂▆▂▄▆▆▃▃▄▄▇▆██▅▄▅▃▂▃▄▂▁▂▂▂▄▃▁▁44.28843.7133.75224.8828.95740.88833.77833.24225.86732.32226.7934.84227.62520.26746.1525.69235.56845.14144.70228.99927.27634.12334.60854.53845.6859.85857.42940.35636.32144.35431.24826.20929.67833.4921.29517.07520.30522.53322.21334.06327.84417.35519.798NANANA
  2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
us-gaap:NoncurrentAssets NANA376.572NANANA363.128NANANA370.633NANANA304.321NANANA295.231NANANA280.224NANANA386.883NANANA373.05NANANA356.961NANANANANANANANANANANA
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical country:CANANA29.582NANANA31.429NANANA33.144NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical country:GBNANA30.872NANANA18.776NANANA16.313NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical country:MXNANA0.503NANANA0.559NANANA0.511NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical country:USNANA289.508NANANA286.727NANANA295.735NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical srt:AsiaNANA26.107NANANA25.637NANANA24.93NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AssetsNoncurrent us-gaap:EquityMethodInvestmentNonconsolidatedInvestee us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees▁█▅▆▇73.97682.19878.24179.3180.724NA87.218NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PropertyPlantAndEquipmentGross NANA939.165NANANA895.311NANANA891.099NANANA822.208NANANA802.53NANANA786.323NANANA738.113NANANA732.18NANANA720.882NANANA673.318NANANA691.289NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:BuildingNANA218.319NANANA203.762NANANA201.176NANANA144.527NANANA144.914NANANA128.322NANANA120.035NANANA132.331NANANA113.854NANANA110.456NANANA115.919NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:ConstructionInProgressNANA28.631NANANA18.92NANANA22.618NANANA9.274NANANA30.344NANANA47.746NANANA44.787NANANA25.691NANANA24.527NANANA10.137NANANA4.445NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LandAndLandImprovementsNANA33.602NANANA31.987NANANA32.132NANANA18.74NANANA19.928NANANA13.046NANANA12.198NANANA13.153NANANA11.066NANANA10.932NANANA12.15NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:MachineryAndEquipmentNANA658.613NANANA640.642NANANA635.173NANANA649.667NANANA607.344NANANA597.209NANANA561.093NANANA561.005NANANA571.435NANANA541.793NANANA558.775NANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment NANA562.593NANANA532.183NANANA520.466NANANA517.887NANANA507.299NANANA506.099NANANA492.203NANANA487.723NANANA487.619NANANA469.574NANANA461.791NANANA
us-gaap:PropertyPlantAndEquipmentNet ███▇▇▇▇▇▇▇▇▇▄▅▅▄▄▅▅▄▅▄▄▄▃▃▃▃▃▃▃▂▂▂▂▂▁▁▁▁▂▂▂385.246384.853376.572368.736362.785366.828363.128361.308365.025369.71370.633360.655284.836300.074304.321283.845284.594296.36295.231289.074297.939278.481280.224270.655261.149244.909245.91246.169245.441243.905244.457222.751238.141233.959233.263228.86212.035206.719203.744207.761223.234227.89229.498NANANA
us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures ▂▃▂▁▂▃▄▄▄▄▅▅▇▇█▇▇▇██▇▇▆▆36.89938.89137.97627.42332.44344.68348.36346.36947.69250.73358.04258.05470.06570.05676.43473.66475.20873.36777.1179.19970.07768.82265.963.709NANA0.0NANANANANANANANANANANANANANANANANANANA
us-gaap:Goodwill ▇▇▇█▆▆▆▅▆▆▅▅▄▄▄▄▄▃▃▄▄▃▃▆▂▂▂▂▂▃▁▁▂▂▂▂▂▂▂▂▂▂▂169.364168.207167.764185.479153.335160.82153.276152.445153.048153.106150.335150.407139.012137.048130.293139.445137.085124.272123.993128.004128.339121.112120.252163.063101.453102.582102.909103.242108.418119.85794.35794.048104.579104.579104.579104.612102.25102.25102.25102.25102.25102.25102.25NANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ███▅▆▄▅▅▆▅▅▆▂▂▂▁▁▁▁▁▂▂▂76.88677.78477.20762.47463.00456.58260.08260.60962.72761.55861.97164.78639.23740.73542.00836.94336.33235.57336.16837.38639.0540.61740.636NANANA18.464NANANANANANANANANANANANANANANANANANANA
us-gaap:FiniteLivedIntangibleAssetsNet NANA77.207NANANA60.082NANANA61.971NANANA42.008NANANA36.168NANANA40.636NANANA18.464NANANA5.5NANANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass mli:OtherGrossNANA0.585NANANA1.03NANANA2.089NANANA-0.41NANANA-0.481NANANA-0.515NANANA0.424NANANANANANANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass mli:PatentsAndTechnologyNANA16.913NANANA15.744NANANA15.284NANANA5.805NANANA4.743NANANA4.475NANANA2.108NANANANANANANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:CustomerRelationshipsNANA49.392NANANA36.059NANANA36.795NANANA31.874NANANA26.988NANANA29.394NANANA11.326NANANANANANANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:NoncompeteAgreementsNANA0.162NANANA0.343NANANA0.818NANANA1.337NANANA1.863NANANA3.696NANANA3.188NANANANANANANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:OtherIntangibleAssetsNANA77.207NANANA60.082NANANA61.971NANANA42.008NANANA36.168NANANA40.636NANANA18.464NANANANANANANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:TradeNamesNANA10.155NANANA6.906NANANA6.985NANANA3.402NANANA3.055NANANA3.586NANANA1.418NANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingLeaseRightOfUseAsset ▇██▆▅▅▇▇██▁26.87128.49429.30122.39717.17218.63226.92225.85528.5929.5150.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ▁▁▁▃▃▃▃▃▃▃▃▃▃▃▄▃▂▂▂▂▂▄▄▇█▅▅█▇▅▅▂▂▂▂▂▁▁▁▂▂▂▁12.17613.56514.38723.63823.9624.26825.39725.4725.48225.89825.9526.63725.72126.10428.00222.49920.29419.26420.65118.86419.34731.22731.38850.651.58436.20838.06454.14749.95333.85434.23619.47918.84919.21819.11916.43514.10514.77314.91116.10316.49716.77614.934NANANA
  2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
us-gaap:AccountsPayableCurrent █▇▆▃▃▃▂▃▃▃▃▄▄▄▃▄▃▄▃▃▃▃▂▄▂▃▃▃▃▃▂▂▂▂▂▁▂▃▁▁▂▄▁190.403177.174147.741108.06393.57994.25185.644102.084106.055107.301103.754121.412112.09115.425102.503125.032105.88117.251103.17592.451105.13898.32488.051113.59789.715100.813100.73592.342101.671109.45280.89776.72576.71382.1487.57465.51389.91497.83665.54565.74386.574123.03167.849NANANA
us-gaap:DebtCurrent NANA41.283NANANA7.537.3872.8915.0017.1019.25459.9529.08716.4814.4514.58314.93913.65516.90716.2264.58311.7613.75618.01431.67636.19437.20760.32832.08529.08333.03643.75353.57527.5712.5725.71542.5941.26552.82750.58243.11732.02NANANA
us-gaap:LiabilitiesCurrent ▆█▅▃▂▂▂▂▂▂▂▂▃▂▂▂▂▂▂▁▂▁▁▂▁▂▂▂▃▂▂▂▂▃▃▁▂▃▂▂▂▃▁362.429444.488339.643252.752229.264229.899234.287246.769226.754220.529232.801244.283273.474213.324242.252245.159219.198231.688218.992202.2217.95202.608209.429229.541209.501224.16238.069233.323268.153235.431219.256244.172240.333281.5258.696211.11240.386275.804213.244232.393231.652278.13195.127NANANA
us-gaap:LongTermDebtCurrent ▁█▃▁▁▁▁6.428106.16441.2836.6846.5437.5917.53NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingLeaseLiabilityCurrent ████▆▆▇▅▆▆▁6.5466.5676.2596.324.6235.0475.253.8324.7544.7370.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesCurrent █▇▆▄▄▅▅▅▃▃▄▃▂▁▅▂▂▂▂▁▂▃▃▂▂▁▁▂▃▂▃▆▄█▇▆▅▇▂▃▁▄▁119.55115.15798.06182.66984.1189.90794.1995.18479.08473.86983.39775.91469.88261.70589.72371.58167.84171.1567.04158.39565.38771.72773.98268.14667.11861.60159.54569.19771.99666.28372.167100.56688.351120.004109.174101.7591.871107.34767.11578.56662.2986.45761.92NANANA
us-gaap:TaxesPayableCurrent NANA6.3NANANA4.7NANANA5.0NANANA9.2NANANA4.6NANANA10.3NANANA0.9NANANA7.3NANA17.26.2NANANA9.3NANANA8.6NANANA
  2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
 us-gaap:LiabilitiesNoncurrent us-gaap:EquityMethodInvestmentNonconsolidatedInvestee us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees▆▆▇█▁49.7749.46350.0250.78346.754NA51.219NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LongTermDebt NANA328.095NANANANANANANANANANANANANANANANANANANA216.01NANANA241.444NANANA235.333NANANA234.87220.1233.515NA197.741NANANA190.246NANANA
us-gaap:LongTermDebtNoncurrent ▅▅▅▅▅▇▆▆▇█▇▇█▇▇▆▇▇▄▄▄▄▃▃▃▄▄▄▄▄▄▄▄▄▄▄▁▃▃▃▃▃▃350.996286.576286.593342.972323.114468.234378.724434.082479.276559.836489.597510.032558.534478.778448.592388.818489.043489.787213.709213.847213.646206.0204.25204.5204.75205.0205.25205.5205.75206.0206.25206.55206.8207.05207.3207.557.8156.226156.476156.726156.976157.226158.226NANANA
us-gaap:DeferredIncomeTaxLiabilitiesNet ▁▂▂▄▆▆█▂▄▅▁▂▆▅▅▆▅▄▆16.36317.12716.84218.06619.63519.51321.09417.2618.59518.9416.61517.29919.6518.80719.40319.96319.35118.24919.573NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType us-gaap:OtherPostretirementBenefitPlansDefinedBenefitNANA11.834NANANA11.64NANANA13.302NANANA15.337NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType us-gaap:PensionPlansDefinedBenefitNANA12.329NANANA7.27NANANA12.716NANANA10.324NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:MinorityInterest ▄▄▃▃▂▂▂▂▂▂▁▁▁▁▁▁▁▆▆▇█▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▄▄▄▄▄28.226.86724.31521.7319.52319.61318.66816.94816.09116.52414.90414.42214.38814.3113.91713.13412.63538.8737.75342.83246.11731.67832.41732.7533.45932.93933.28433.01132.12132.71332.46232.67132.48531.25731.05830.06330.10429.65329.07428.86728.13127.37627.161NANANA
us-gaap:OtherLiabilitiesNoncurrent ▇▅▅▅▄▄▄▄▆▇▇▇███▅▄▃▃▁▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▂▁▁▁20.11314.50314.73112.41210.399.80110.13110.17315.58719.98918.21218.53822.65421.6321.48612.00511.1916.4476.2842.1182.932.9732.443.572.793.1071.3890.5811.3060.6180.8491.1411.1040.9451.6670.9850.9660.8891.132.1871.8770.8080.824NANANA
us-gaap:OperatingLeaseLiabilityNoncurrent ▆▇▇▆▅▅▇▇██▁19.43320.83221.60216.46413.00914.12422.38822.71224.49125.4370.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANA6.489NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANA4.553NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANA3.382NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA2.376NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA7.254NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
us-gaap:StockholdersEquity █▆▆▅▄▄▄▃▃▂▂▂▂▂▂▂▁▁▇▇▇▇▆▆▆▅▅▅▅▅▄▄▃▂▂▁▇▇▇▇▇▆▆945.716841.146776.745717.621670.681645.687643.468607.648588.271565.398548.356568.986557.701538.755522.111516.903493.371467.875898.684893.772872.655854.804827.285815.433811.2774.863762.15774.562760.823725.469703.405661.749617.158525.202506.908495.047904.343893.065855.688856.189854.305832.299788.736NANANA
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest █▆▅▄▄▃▃▃▂▂▂▂▂▂▁▁▁▁▇▇▇▇▆▆▆▆▅▆▅▅▄▄▃▂▁▁▇▇▇▇▇▆▆973.916868.013801.06739.351690.204665.3662.136624.596604.362581.922563.26583.408572.089553.065536.028530.037506.006506.745936.437936.604918.772886.482859.702848.183844.659807.802795.434807.573792.944758.182735.867694.42649.643556.459537.966525.11934.447922.718884.762885.056882.436859.675815.897NANANA
us-gaap:CommonStockValue ██████████████████████████████▁▁▁▁▁▁▁▁▁▁▁▁▁0.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.4010.4010.4010.4010.4010.4010.4010.4010.4010.4010.4010.4010.401NANANA
us-gaap:AdditionalPaidInCapital █▇▆▅▇▆▅▄▆▅▄▃▅▄▃▂▃▃▃▂▃▃▂▁▂285.148282.713280.051277.663281.856280.197278.609276.198280.626278.8276.849274.767277.987276.429274.585272.667274.75273.129273.345271.476274.928273.576271.158269.529270.784NA268.575NANANANANANANANANANANANANANANANANANANA
us-gaap:RetainedEarningsAccumulatedDeficit █▇▆▆▅▅▅▄▄▄▄▃▃▃▃▃▂▂█▇▇▇▇▆▆▆▆▆▅▅▅▅▄▃▃▃▂▂▂▂▂▁▁1176.8121075.411019.694988.983951.992929.81903.07880.537857.121834.798824.737803.627788.753761.319743.503743.56727.11705.241141.8311130.2491110.011087.9271063.5431053.3951039.8821010.505992.798979.079959.522928.729908.274896.428860.098772.465749.777736.917725.244711.154682.38673.276666.623648.08611.279NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▅▅▄▂▁▁▃▂▂▂▂▃▄▅▄▄▄▃▃▄▄▄▄▄▅▅▅▇███▅▅▅▅▅▅▅▅▅▆▆▆-48.262-48.528-54.883-81.111-89.799-90.165-68.77-79.823-74.754-72.881-79.792-62.957-58.101-47.614-51.056-54.377-60.454-62.041-66.956-58.401-59.472-53.547-54.99-55.084-44.195-49.429-42.923-15.309-8.729-10.785-10.819-39.327-46.375-48.057-42.623-39.959-45.95-41.798-49.409-38.714-29.214-31.054-37.046NANANA
us-gaap:TreasuryStockValue ████████████████████████████████████▁▁▁▁▁▁▁468.784469.251468.919468.716474.17474.957470.243470.066475.524476.121474.24447.253451.74452.181445.723445.749448.837449.255450.338450.354453.613453.954453.228453.209456.073456.651457.102457.371460.199460.57461.593462.491467.586468.098468.473469.82844.45744.64944.6244.60448.6449.12449.131NANANA
us-gaap:MinorityInterest ▄▄▃▃▂▂▂▂▂▂▁▁▁▁▁▁▁▆▆▇█▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▄▄▄▄▄28.226.86724.31521.7319.52319.61318.66816.94816.09116.52414.90414.42214.38814.3113.91713.13412.63538.8737.75342.83246.11731.67832.41732.7533.45932.93933.28433.01132.12132.71332.46232.67132.48531.25731.05830.06330.10429.65329.07428.86728.13127.37627.161NANANA
 us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents us-gaap:AdditionalPaidInCapital█▃▄▃▄▂▅▂▄▂▂▂▂▁2.7082.1092.2382.1342.2131.9852.3892.0532.2952.0072.0822.0471.9941.912NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
us-gaap:NetCashProvidedByUsedInOperatingActivities ▄▁▅▅█▄▆▆▇▁▅▇▅▁▂▄▄▂31.861-22.58148.19554.096114.73128.05168.61767.94488.656-24.67345.37786.29662.734-26.515-9.54740.99523.969-11.422NANANANANANANANANA55.085-6.209-44.67258.52320.83664.069-14.91535.53155.48828.06-10.78284.865107.788-64.73725.833-4.33928.308-4.2536.638
us-gaap:NetCashProvidedByUsedInInvestingActivities █▇▇▅█▆▇▇█▇▇▁█▇▇███-0.118-21.526-14.627-73.366-5.128-32.501-13.145-7.594-4.888-14.83-20.818-153.6965.302-17.884-25.4143.303-5.602-5.709NANANANANANANANANA-8.835-9.549-32.732-61.98652.48328.151-21.633-10.692-19.294-11.80325.413-3.319-4.034-7.812-11.539-5.133-5.304-7.30515.756
us-gaap:NetCashProvidedByUsedInFinancingActivities ▄▇▅▅▂▇▄▄▃▇▄▃█▅▆▃▅▁-55.25564.978-26.0126.271-157.0384.507-61.955-50.29-87.90160.452-54.96-107.925124.31110.30555.596-106.998-4.773-188.391NANANANANANANANANA-27.88224.298-1.1-7.667-14.365-13.98722.3768.319-245.114-168.794-3.059-15.6121.22611.424-3.9823.536-21.3111.788-0.408
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▄▅▅▄▃▆▄▅▄▅▄▁█▄▅▃-23.30921.65512.997-10.133-47.45273.922-4.4618.431-4.93421.868-31.911-175.399190.69-32.80516.256-61.75NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
us-gaap:DeferredIncomeTaxExpenseBenefit ▄▄▂▃▄▄▄▃▄▃▄▃▃▃▂▄▄▃▄▄▄▄▁▁▃▃▄▃▂▃▅▄█▃▂▅▃▃▃▃▃▃▄▂▃▂3.110.142-3.21-1.60.5510.2131.165-1.5260.158-0.2251.672-0.242-0.32-0.94-3.7840.6210.083-0.080.5072.9431.6531.895-7.556-6.817-0.875-0.570.413-0.385-5.039-1.4845.0611.68413.781-1.313-3.6035.249-0.46-2.47-1.405-0.236-0.625-1.9241.759-4.016-0.747-3.623
us-gaap:DepreciationDepletionAndAmortization ▇██▆▇▆▆▆▅▆▅▆▃▄▂▂▂▂▁▃▃▃▄▃▂▁▁▃▂11.13411.75511.95510.75211.09711.03910.83710.82310.47810.55510.47410.6199.0069.4568.7288.2668.5958.3558.1369.0169.0618.929.8188.7498.1887.8538.0848.9528.592NANANANANANANANANANA8.8459.239.769NA9.99610.16510.389
us-gaap:IncreaseDecreaseInAccountsReceivable ██▅▅▃▆▂▄▄▅▃▂▅▇▃▄▄▆▃▄▅▅▂▃▄▆▃▃▆▆▂▄▄▆▄▃▄▇▄▅▅▁▄▅▃▃100.97289.97230.87434.318-35.07946.291-53.9385.2888.07834.067-30.859-48.14417.50272.843-31.58-13.749-6.64853.756-29.278-6.55427.24525.089-46.411-29.553-12.38836.692-41.422-37.55950.93149.482-57.7533.275-7.58542.687.911-40.047-11.16666.9929.76416.5325.964-80.9744.31610.009-30.13-30.689
us-gaap:IncreaseDecreaseInInventories ▅▇▆▅▃▄▅▃▂▅▆▄▃▄▇▆▅▅▄▅▄▅▄▃▅▄▄▄▅▅▄▅▄▄▅▄▄▅▆█▁▄▃▄▄▅18.35945.5936.3911.665-25.813-17.4511.424-20.905-43.41513.33521.204-15.359-29.853-3.50445.36630.0463.8836.991-7.5762.09-2.8071.631-11.185-35.15312.786-7.534-16.249-5.75110.56410.055-10.5299.271-4.493-0.2125.419-9.64-4.68913.74426.1168.534-65.495-13.471-20.048-1.9961.0483.748
us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet ▇▇▆██▁▆▆█▆▇▅▄▇▆▆▇█▅▆▆▇▄▇▆▆▅▆▇▆▆▆▆▇▇▅▆▇▃▇█▆▇▇▆▇0.1520.095-0.1050.7880.714-3.796-0.369-0.4850.973-0.441-0.039-0.743-1.4860.365-0.14-0.1050.1480.93-1.138-0.522-0.2190.291-1.4620.594-0.494-0.245-0.821-0.1310.306-0.398-0.197-0.088-0.6180.1980.106-1.001-0.232-0.038-2.2810.3260.981-0.5480.4240.138-0.6430.28
us-gaap:NetCashProvidedByUsedInOperatingActivities ▄▁▅▅█▄▆▆▇▁▅▇▅▁▂▄▄▂31.861-22.58148.19554.096114.73128.05168.61767.94488.656-24.67345.37786.29662.734-26.515-9.54740.99523.969-11.422NANANANANANANANANA55.085-6.209-44.67258.52320.83664.069-14.91535.53155.48828.06-10.78284.865107.788-64.73725.833-4.33928.308-4.2536.638
us-gaap:NetIncomeLoss █▅▃▄▃▃▃▃▃▂▂▂▃▂▁▂▂▃▂▂▂▃▂▂▃▂▂▂▃▂▂▃▇▂▂▂▂▃▁▁▂▃▂▂▂▃108.83263.10736.4242.70227.95632.41528.1729.09327.98615.72326.85720.29233.18224.1285.7222.25827.63329.98717.32225.97827.79728.6314.43517.833.65121.97817.98723.82335.04524.70615.38439.86491.1526.20216.36815.51117.91732.59912.92810.47522.33140.58717.74618.90915.55833.958
us-gaap:ProfitLoss █▅▃▄▃▃▃▃▃▂▂▂▃▂▁▂▂▃▂▂▂▃▂▂▃▂▂▂▃▂▂▃▇▂▂▂▂▃▁▁▂▃▂▂▂▃110.93265.23837.25443.95728.48733.95129.97330.44428.67617.13927.73120.86333.88224.3445.96922.75427.83330.45516.76826.06228.25928.66514.1118.09533.86222.3418.04924.32235.20924.95415.0239.99391.84226.43416.74615.5718.5432.81713.07210.74122.73140.54217.95218.74716.03734.799
us-gaap:ShareBasedCompensation ▇▅▆▅▅▅▆▅▆▅▅▅▅▅▅▄▅▄▄▄▄▃▄▄▄▃▃▃▆▂▂▃▆▂█▂▂▂▂▂▂▁▁▁▁▁2.7082.1092.2382.1342.2131.9852.3892.0532.2952.0072.0822.0471.9941.9121.8951.8631.9561.7361.8341.6791.6381.2361.6331.6451.6171.3491.3081.4312.3321.1941.1441.2342.380.9463.0940.9811.1630.8980.8990.8710.9480.7640.6920.750.7310.704
  2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
us-gaap:NetCashProvidedByUsedInInvestingActivities █▇▇▅█▆▇▇█▇▇▁█▇▇███-0.118-21.526-14.627-73.366-5.128-32.501-13.145-7.594-4.888-14.83-20.818-153.6965.302-17.884-25.4143.303-5.602-5.709NANANANANANANANANA-8.835-9.549-32.732-61.98652.48328.151-21.633-10.692-19.294-11.80325.413-3.319-4.034-7.812-11.539-5.133-5.304-7.30515.756
us-gaap:PaymentsToAcquireProductiveAssets ▂▃▄▂▁▅▃▂▂▂▆▂▁▂█▁▁▂▆▁▁▂▂▂▂▂▃▃▃▃▂▃▃▃▄▆▄▃▂▁▁▁▁▁▁▁8.7519.22714.6816.9895.12117.09411.07.1286.26.83421.7965.8035.3655.51728.8345.3894.5637.34521.8655.3844.3565.8926.3326.5338.5777.39210.7679.5739.6349.1997.94711.71511.8529.83512.98420.40814.0939.345.6234.3853.6935.054.4684.9244.8074.479
  2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
us-gaap:NetCashProvidedByUsedInFinancingActivities ▄▇▅▅▂▇▄▄▃▇▄▃█▅▆▃▅▁-55.25564.978-26.0126.271-157.0384.507-61.955-50.29-87.90160.452-54.96-107.925124.31110.30555.596-106.998-4.773-188.391NANANANANANANANANA-27.88224.298-1.1-7.667-14.365-13.98722.3768.319-245.114-168.794-3.059-15.6121.22611.424-3.9823.536-21.3111.788-0.408
us-gaap:ProceedsFromIssuanceOfLongTermDebt █▃▂▂▁▃▁▁▁▃▁▁▄▂325.0100.040.01140.0120.015110.00.00.020.081100.55710.1020.884151.49341.754NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:RepaymentsOfLongTermDebt █▂▂▁▄▁▂▂▃▂▂▃▁▁▁▃▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▄▁▁▁▁▁▁▁365.20935.28860.40620.471145.44920.57255.41340.39180.44230.47232.484102.41121.20415.90310.307100.3060.3050.3060.3050.2690.250.250.250.250.250.250.250.30.250.250.250.250.250.250.250.25148.4260.25-1.1521.6520.250.00.00.0NANA
us-gaap:PaymentsOfDividends NANANA5.58611.1680.05.5875.5875.5775.5745.6545.6915.6815.6795.7035.7025.691179.8485.6695.6685.6514.2364.2344.2344.2194.2164.2134.2124.1984.1963.4923.4893.4813.4793.4763.813.8033.8023.8013.7993.7743.7723.7743.7713.773.759
 us-gaap:Dividends us-gaap:StatementEquityComponents us-gaap:RetainedEarnings██▁▁▂▁▁▁▁▁▁▁▁▁7.437.3915.7095.7115.7745.6755.6375.6775.6635.6625.7475.7585.7485.756NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PaymentsForRepurchaseOfCommonStock NANA0.00.00.05.5740.00.00.01.76326.9870.00.06.5750.00.00.00.0NANANANANA0.0NANA-0.0580.0NANA0.00.0NANA-0.002NANANA-8.2117.468NANA0.3330.01NANA
  2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252009-12-26
Value802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0401000.0401000.0401000.0401000.0401000.0401000.0401000.0401000.0401000.0401000.0401000.0401000.0401000.0401000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Shares Issued

us-gaap:SharesIssued us-gaap:StatementEquityComponents

us-gaap:SharesIssued

us-gaap:CommonStock


Shares
Period End2020-12-262019-12-282019-03-302018-12-292018-03-312017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-252009-12-262008-12-272007-12-29
Value80808080808080808040404040404040
Percentage of SharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStock


Shares
Period End2020-12-262019-12-282019-03-302018-12-292018-03-312017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-252009-12-262008-12-272007-12-29
Value23232323222222232311111.8552.2372.4422.9493.012
Percentage of SharesIssued28.829.029.429.328.227.928.428.729.029.429.94.65.66.17.47.5

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-262021-03-272020-09-262020-06-272020-03-282019-09-282019-06-292019-03-302018-09-292018-06-302018-03-312017-09-302017-07-012017-04-012016-10-012016-07-022016-04-022015-09-262015-06-272015-03-282014-09-272014-06-282014-03-292013-09-282013-06-292013-03-302012-09-292012-06-302012-03-312011-10-012011-07-022011-04-022010-09-252010-06-262010-03-27
Value5656565656565656575757575757575656565656565656282828373838380.03809337370.03771737
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-262021-03-272020-09-262020-06-272020-03-282019-09-282019-06-292019-03-302018-09-292018-06-302018-03-312017-09-302017-07-012017-04-012016-10-012016-07-022016-04-022015-09-262015-06-272015-03-282014-09-272014-06-282014-03-292013-09-282013-06-292013-03-302012-09-292012-06-302012-03-312011-10-012011-07-022011-04-022010-09-252010-06-262010-03-27
Value5555555555555555565656565656565656565656565555272727373838370.03773737370.03767437
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value1.951.130.650.770.50.580.50.520.50.280.470.360.580.420.10.390.490.530.310.460.490.510.260.320.60.390.320.420.630.440.551.433.270.940.590.410.470.860.340.280.591.080.470.50.410.9
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value1.921.110.640.760.50.570.50.520.50.280.470.350.580.420.10.390.480.520.30.450.490.50.250.310.590.390.320.420.620.440.541.413.230.930.580.410.470.850.340.270.591.070.470.50.410.9
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-26
Value109696251281139242622101522279.0412829348.767272130146.9143915-9.6317372443469220112113402.2330.9742446142415
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.88.59.38.35.71.87.23.93.93.71.82.43.44.21.75.14.86.01.95.34.05.63.11.37.22.9-1.82.95.74.39.08.915.93.72.34.22.37.00.50.23.76.82.84.92.9

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-26
Value1333000.02552000.02585000.02207000.0-90000.0945000.02566000.0857000.0-433000.01620000.0482000.034000.0670000.0393000.0783000.0499000.0386000.01117000.0-2166000.0480000.0-123000.0-739000.0-333000.0-709000.0-520000.0-345000.0274000.0889000.0-594000.0253000.0-209000.0186000.01228000.0199000.02974000.040000.0451000.0579000.0207000.0737000.0755000.0215000.0818000.034000.0366000.0
Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.30.40.4-0.00.20.50.1-0.10.30.10.00.10.10.10.10.10.2-0.50.1-0.0-0.1-0.1-0.1-0.1-0.10.10.1-0.10.0-0.00.00.20.00.60.00.10.10.00.10.10.00.20.00.1

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-26
Value110726553281141242524101523279.8242829366.601272129146.2053915-9.35618362443479420142114402.441.7112446152416
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.98.89.78.75.62.07.74.13.94.01.92.43.54.31.95.24.86.21.45.44.05.53.01.27.12.8-1.73.05.64.49.08.916.23.72.94.22.47.10.50.33.86.82.94.93.0

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostOfGoodsAndServicesSold


Cost
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-01
Value799668553500403508449510563511473566563545456471524
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax79.081.781.980.980.684.482.683.984.683.684.887.885.185.387.285.685.4

us-gaap:CostOfGoodsAndServicesSold us-gaap:ConsolidationItems

mli:CorporateAndEliminations


Cost
Period End2021-06-262021-03-272020-09-262020-06-272020-03-282019-09-28
Value-10.268-6.909-5.291-8.9263.661-8.046
Percentage of CostOfGoodsAndServicesSold-1.3-1.0-1.1-2.20.7-1.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.0-0.8-0.9-1.80.6-1.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mli:CorporateAndEliminations95.3126.178.5103.8-55.792.5

us-gaap:CostOfGoodsAndServicesSold us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, mli:Climate


Cost
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-01
Value9684707064716170746657663027212427
Percentage of CostOfGoodsAndServicesSold12.012.612.714.116.014.013.713.813.313.112.211.85.45.04.85.15.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.510.310.411.412.911.811.311.611.210.910.310.34.64.34.24.44.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mli:Climate73.175.70.072.275.076.20.077.677.974.40.081.978.375.70.074.274.9

us-gaap:OperatingSegments, mli:IndustrialMetals


Cost
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-01
Value1551401129575114100117127126114141154149129120132
Percentage of CostOfGoodsAndServicesSold19.421.120.319.118.722.622.423.122.724.824.124.927.427.428.525.525.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.317.216.615.515.019.018.519.419.220.720.421.923.323.324.821.821.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mli:IndustrialMetals86.385.50.080.584.987.50.087.086.684.00.089.187.884.30.081.386.1

us-gaap:OperatingSegments, mli:PipingSystems


Cost
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-01
Value558450380339272319294330364324305363384372320340364
Percentage of CostOfGoodsAndServicesSold69.867.468.767.967.562.765.564.764.663.564.564.168.368.370.172.269.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax55.155.056.354.954.452.954.154.354.753.154.756.258.158.361.161.859.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mli:PipingSystems78.582.20.083.081.582.90.084.585.686.30.088.584.986.50.088.686.1

us-gaap:CostOfGoodsAndServicesSold us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Cost
Period End2021-06-262021-03-272020-09-262020-06-272020-03-282019-09-282019-06-292019-03-302018-09-292018-06-30
Value-2.39-1.299-0.2486.3610.468-0.394-0.274-0.096-0.2040.019
Percentage of CostOfGoodsAndServicesSold-0.3-0.2-0.01.60.1-0.1-0.0-0.0-0.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.2-0.2-0.01.30.1-0.1-0.0-0.0-0.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.0

Gains Losses On Extinguishment Of Debt

us-gaap:GainsLossesOnExtinguishmentOfDebt

us-gaap:GainsLossesOnExtinguishmentOfDebt


Gains
Period End2021-06-26
Value-5674000.0
Percentage of GainsLossesOnExtinguishmentOfDebt100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.6

us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:LongtermDebtType

us-gaap:SubordinatedDebt


Gains
Period End2021-06-26
Value-5700000.0
Percentage of GainsLossesOnExtinguishmentOfDebt100.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SubordinatedDebt0.0

Gross Profit

us-gaap:GrossProfit

us-gaap:GrossProfit


Gross
Period End2020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value12211897949497102100857998946679898976818886606885766881917865728176656471846361799769697372
Percentage of GrossProfit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.119.119.415.617.416.115.416.415.212.214.914.712.814.414.615.516.116.216.216.212.812.715.314.212.713.514.113.713.513.713.913.713.012.512.014.612.910.612.114.213.213.713.614.9

us-gaap:GrossProfit us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees


Gross
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-29
Value159.699187.5651113181715
Percentage of GrossProfit0.00.014.96.411.414.319.217.415.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.51.22.71.22.22.23.32.82.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees14.810.00.010.210.612.60.013.112.8

Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments


Income
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value1508839645054384044423427464210314043273543391825533327364637216614339232427441916336025272344
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.910.85.910.510.09.07.16.76.76.96.24.27.06.62.15.86.67.55.77.18.07.54.04.89.66.35.16.17.26.54.312.624.77.14.84.74.67.73.92.85.28.94.95.54.39.2

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value3921121513147.6147.665109.5467.7733.373127.3954.5898.71612119.1741014147.0085.22319119.21211126.0942651137.1958.7539.071116.0155.40311207.8979.0987.4569.864
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.92.71.92.52.62.31.41.31.61.61.40.51.91.20.91.62.12.11.92.12.62.71.51.03.62.11.72.01.82.21.25.18.92.41.41.71.52.01.20.91.73.01.51.81.42.0

us-gaap:IncomeTaxExpenseBenefit us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Income
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-02
Value-0.038-0.037-2.175-0.063-0.086-0.029-0.036-0.042-0.032-0.053-0.013-0.0090.006-0.022-0.056-0.055-0.046-0.064-0.127-0.132-0.122
Percentage of IncomeTaxExpenseBenefit-0.1-0.2-17.1-0.4-0.7-0.2-0.5-0.5-0.3-0.6-0.2-0.30.0-0.3-1.2-0.6-0.4-0.5-1.4-1.2-0.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.0-0.3-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.00.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Income
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-30
Value0.5370.3040.0610.068-1.285-0.09-0.0330.0610.0560.017-0.0370.024-0.002
Percentage of IncomeTaxExpenseBenefit1.41.40.50.4-9.9-0.6-0.40.80.50.2-0.50.7-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.00.00.0-0.3-0.0-0.00.00.00.0-0.00.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.00.00.00.0

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value1.8664.4694.014.8854.9735.3795.5486.1487.0336.9546.4716.7466.0735.9095.2925.2376.4422.5312.0171.831.6921.8481.691.6822.2192.0761.8271.431.4571.0261.051.2431.1010.5961.1790.3532.7212.6372.5492.8222.8343.3483.0793.0722.9642.532
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.50.60.81.00.91.01.01.11.11.21.00.90.91.01.01.00.40.40.40.30.30.40.30.40.40.30.20.20.20.20.20.20.10.20.10.50.50.50.50.40.50.60.60.50.5

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value108633642273228292715262033245.7222272917252728141733211723352415399126161517321210224017181533
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.77.75.46.95.65.45.24.84.22.64.83.15.03.81.14.04.55.23.75.15.15.43.13.36.14.13.34.05.44.33.27.515.74.73.23.03.05.62.61.83.45.93.43.72.97.0

us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Net
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-02
Value-0.191-0.192-7.538-0.264-0.337-0.152-0.177-0.207-0.17-0.243-0.085-0.072-0.027-0.119-0.305-0.246-0.229-0.262-0.234-0.395-0.38
Percentage of NetIncomeLoss-0.2-0.3-20.7-0.6-1.2-0.5-0.6-0.7-0.6-1.5-0.3-0.4-0.1-0.5-5.3-1.1-0.8-0.9-1.4-1.5-1.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.0-1.1-0.0-0.1-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.1-0.0-0.0-0.0-0.0-0.1-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Net
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-30
Value1.8530.9950.1830.18-5.076-0.378-0.1440.3330.2180.079-0.0840.18-0.017
Percentage of NetIncomeLoss1.71.60.50.4-18.2-1.2-0.51.10.80.5-0.30.9-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.10.00.0-1.0-0.1-0.00.10.00.0-0.00.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-31
Value10863364227322829271526203324
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.77.75.46.95.65.45.24.84.22.64.83.15.03.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest


Net
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value2100000.02131000.0834000.01255000.0531000.01536000.01803000.01351000.0690000.01416000.0874000.0571000.0700000.0216000.0249000.0496000.0200000.0468000.0-554000.084000.0-462000.035000.0-325000.0295000.0211000.0362000.063000.0499000.0164000.0248000.0-364000.0129000.0692000.0232000.0378000.059000.0623000.0-218000.0144000.0266000.0400000.0-45000.0206000.0-162000.0479000.0841000.0
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.30.10.20.10.30.30.20.10.20.20.10.10.00.00.10.00.1-0.10.0-0.10.0-0.10.10.00.10.00.10.00.0-0.10.00.10.00.10.00.1-0.00.00.00.1-0.00.0-0.00.10.2

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Net
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-31
Value-2100000.0-2131000.0-834000.0-1255000.0-531000.0-1536000.0-1803000.0-1351000.0-690000.0-1416000.0-874000.0-571000.0-700000.0-216000.0
Percentage of NetIncomeLossAttributableToNoncontrollingInterest-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.2-0.3-0.1-0.2-0.1-0.3-0.3-0.2-0.1-0.2-0.2-0.1-0.1-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value1579265695259444651493933514721374645293744411827553529374838226714437252429462118366329302847
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.611.39.611.210.59.88.27.67.78.07.15.27.87.44.26.87.67.96.27.48.27.84.05.110.06.65.56.37.46.74.512.724.86.75.14.85.08.14.33.25.69.25.56.15.49.7

us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems

mli:CorporateAndEliminations


Operating
Period End2021-06-262021-03-272020-09-262020-06-272020-03-282019-09-28
Value-12.565-10.74-12.14-10.004-1.561-10.32
Percentage of OperatingIncomeLoss-8.0-11.6-17.5-19.1-2.6-22.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.2-1.3-2.0-2.0-0.3-1.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mli:CorporateAndEliminations116.6196.1180.0116.423.8118.7

us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, mli:Climate


Operating
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-28
Value2517131812139.3437.96313127.455.7745.3475.5473.175.4296.1165.613.1934.8245.8373.8792.5013.4434.252.265
Percentage of OperatingIncomeLoss16.118.720.426.223.621.921.017.225.325.218.617.110.311.714.414.513.112.310.912.913.19.413.212.77.76.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.52.12.02.92.52.21.71.32.02.01.30.90.80.90.61.01.01.00.71.01.10.70.50.60.80.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mli:Climate19.315.60.018.614.314.00.08.813.613.80.07.113.715.40.016.716.716.40.016.118.612.60.012.113.58.8

us-gaap:OperatingSegments, mli:IndustrialMetals


Operating
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-28
Value201815188.87311151214192115162215231620221817198.889.1282018
Percentage of OperatingIncomeLoss13.020.424.126.517.018.933.827.228.939.054.544.931.047.769.561.435.845.376.350.038.548.046.833.836.953.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.02.32.33.01.81.92.82.12.23.13.92.32.43.52.94.22.73.64.73.73.13.71.91.73.73.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mli:IndustrialMetals11.411.40.015.410.08.50.09.310.112.70.09.59.112.80.015.610.913.80.014.313.414.80.06.514.112.6

us-gaap:OperatingSegments, mli:PipingSystems


Operating
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-28
Value12467434441363136352822254232132034301524323118254326
Percentage of OperatingIncomeLoss78.972.566.364.878.561.871.477.969.757.456.275.580.969.563.255.273.966.653.364.474.275.196.694.177.873.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.38.26.47.28.26.15.85.95.44.64.03.96.35.12.73.85.65.33.34.86.15.83.94.87.84.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mli:PipingSystems17.512.20.011.012.39.50.09.28.47.50.06.29.37.60.05.48.27.60.06.98.58.40.06.911.47.3

Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax


Other
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-30
Value-3337000.0493000.0316000.0151000.03398000.0-3357000.0557000.0-195000.0-929000.01257000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.30.10.00.00.7-0.60.1-0.0-0.10.2

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:CommodityContract, us-gaap:CashFlowHedging


Other
Period End2021-06-262021-03-272020-09-262020-06-272020-03-282019-09-282019-06-292019-03-30
Value-1475000.01491000.0337000.0-1715000.0-3706000.0130000.0-733000.01352000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax44.2302.4223.2-50.5110.4-66.778.9107.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.10.20.1-0.3-0.60.0-0.10.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CommodityContract us-gaap:CashFlowHedging0.00.00.00.00.00.00.00.0

us-gaap:OtherContract, us-gaap:CashFlowHedging


Other
Period End2021-06-262021-03-272020-09-262020-06-272020-03-282019-09-282019-06-292019-03-30
Value-9000.0-3000.0-6000.037000.0-29000.08000.022000.0-16000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax0.3-0.6-4.01.10.9-4.1-2.4-1.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.0-0.00.0-0.00.00.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OtherContract us-gaap:CashFlowHedging0.00.00.00.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:CashFlowHedging


Other
Period End2021-06-262021-03-272020-09-262020-06-272020-03-282019-09-282019-06-292019-03-30
Value-1484000.01488000.0331000.0-1678000.0-3735000.0138000.0-711000.01336000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax44.5301.8219.2-49.4111.3-70.876.5106.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.10.20.1-0.3-0.60.0-0.10.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CashFlowHedging0.00.00.00.00.00.00.00.0

Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax


Other
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-10-01
Value3.5154.387219.320.421-21.25511-6.692-2.9776.057-11.3421.111-11.6224.977-2.0967.1540.9067.21-12.166-4.304-10.186-1.111-5.607-12.1537.056-8.404-3.068-6.6611.7951.1672.5156.738-0.644-5.3240.8984.973-4.5456.744-6.389
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.53.21.50.1-3.52.0-1.1-0.41.0-2.00.2-1.80.8-0.41.30.11.2-2.6-0.8-1.9-0.2-1.2-2.31.3-1.6-0.6-1.10.30.20.51.3-0.1-1.00.21.0-0.81.2-1.1

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Other
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-31
Value-0.7670.4211.7510.952-0.621-0.5910.763-0.494-1.1230.204-0.392-0.537-0.030.177
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax-21.89.68.010.2-147.52.86.97.437.73.43.5-48.30.33.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.10.10.30.2-0.1-0.10.1-0.1-0.20.0-0.1-0.1-0.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-10-01
Value-0.5016.776279.64-0.255-21.98611-5.563-2.9967.115-17.226-5.395-10.5163.0633.8556.081.7735.564-10.1671.466-6.5090.6690.085-11.895.54-7.213-27.405-6.191.30.039287.1052.218-5.468-2.0455.889-4.3237.971-9.03
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.00.84.11.6-0.1-3.62.2-0.9-0.41.2-3.1-0.8-1.60.50.71.10.31.0-2.20.3-1.20.10.0-2.21.0-1.3-5.1-1.00.20.05.91.30.4-1.0-0.41.1-0.71.4-1.5

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

mli:AccumulatedOtherComprehensiveIncomeAttributabletoUnconsolidatedAffiliates


Other
Period End2021-06-262021-03-272020-09-262020-06-272020-03-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-09-302017-07-012017-04-012016-10-01
Value-0.7531.9870.339-2.791.8870.5470.2340.047-1.499-6.9070.121-0.401-0.7351.247-1.5985.112
Percentage of OtherComprehensiveIncomeLossNetOfTax150.329.33.51094.1-8.6-9.8-7.80.78.7128.0-1.2-13.1-12.170.3-28.7348.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.10.20.1-0.60.30.10.00.0-0.3-1.10.0-0.1-0.10.2-0.31.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mli:AccumulatedOtherComprehensiveIncomeAttributabletoUnconsolidatedAffiliates0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-06-262021-03-272020-09-262020-06-272020-03-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-09-302017-07-012017-04-012016-10-01
Value0.074-0.091-0.17-1.2840.7390.7770.676-0.246-4.1080.270.95-0.451-0.207-0.4050.040.743
Percentage of OtherComprehensiveIncomeLossNetOfTax-14.8-1.3-1.8503.5-3.4-14.0-22.6-3.523.8-5.0-9.0-14.7-3.4-22.80.750.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.0-0.0-0.30.10.10.1-0.0-0.70.00.1-0.1-0.0-0.10.00.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Other
Period End2021-06-262021-03-272020-09-262020-06-272020-03-282019-09-282019-06-292019-03-302018-09-29
Value-3.3370.4930.1513.398-3.357-0.195-0.9291.2570.131
Percentage of OtherComprehensiveIncomeLossNetOfTax666.17.31.6-1332.515.33.531.017.7-2.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.30.10.00.7-0.6-0.0-0.10.20.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-01
Value0.2666.355268.6880.366-21.39511-5.069-1.8736.911-16.835-4.856-10.4872.8863.3216.0771.5874.915-8.5551.071
Percentage of OtherComprehensiveIncomeLossNetOfTax-53.193.893.790.1-143.597.393.591.162.597.197.790.099.794.286.1100.089.588.384.173.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.83.91.40.1-3.52.0-0.8-0.31.1-3.0-0.8-1.60.50.61.10.30.9-1.80.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Other
Period End2021-06-262021-03-272020-09-262020-06-272020-03-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-09-302017-07-012017-04-012016-10-01
Value4.2823.9668.3681.042-20.664-6.198-1.8545.853-10.9511.65-11.5934.87.1510.726.561-4.699
Percentage of OtherComprehensiveIncomeLossNetOfTax-854.758.586.8-408.694.0111.461.982.363.6-30.6110.2156.7117.640.6117.9-320.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.51.40.2-3.4-1.0-0.31.0-2.00.3-1.70.71.30.11.1-0.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value0.6830.5771.2530.5222.8340.2780.8610.5330.462-0.1722.410.4110.5860.561.477-0.4580.2310.551-0.1760.120.5150.2451.6540.1640.2650.105-0.6830.2250.1270.0880.1270.8420.3193.163-0.4240.2190.490.2540.4870.1020.2641.059-0.3020.03-2.5180.14
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.20.10.60.00.20.10.1-0.00.40.10.10.10.3-0.10.00.1-0.00.00.10.00.40.00.00.0-0.10.00.00.00.00.20.10.6-0.10.00.10.00.10.00.00.2-0.10.0-0.50.0

us-gaap:OtherNonoperatingIncomeExpense us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-01
Value-0.229-0.2291.929-0.327-0.423-0.181-0.213-0.249-0.202-0.296-0.098-0.081-0.021-0.141-0.361-0.301-0.275-0.326
Percentage of OtherNonoperatingIncomeExpense-33.5-39.7154.0-62.6-14.9-65.1-24.7-46.7-43.7172.1-4.1-19.7-3.6-25.2-24.465.7-119.0-59.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.00.3-0.1-0.1-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.1-0.1-0.0-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value110653743283329302817272033245.96922273016262828141833221824352415399126161518321310224017181634
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.08.05.57.15.75.65.55.04.32.85.03.25.13.81.14.14.55.33.65.15.25.43.03.46.14.23.44.05.44.33.17.615.84.73.33.03.15.72.71.83.55.93.43.73.07.2

us-gaap:ProfitLoss us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees


Profit
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-29
Value-2.038-3.29919-10.916-17.282-12.685-0.382-3.952-10.512
Percentage of ProfitLoss-1.8-5.153.7-24.8-60.7-37.4-1.3-13.0-36.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.2-0.43.0-1.8-3.5-2.1-0.1-0.6-1.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees-2.0-3.40.0-14.8-16.7-11.90.0-3.0-8.8

us-gaap:ProfitLoss us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

mli:MuellerMiddleEast


Profit
Period End2020-09-262019-09-282019-06-29
Value0.0-0.5-0.6
Percentage of ProfitLoss0.0-1.6-2.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.1-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mli:MuellerMiddleEast0.00.00.0

mli:TecumsehProductsHoldingsLLC


Profit
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-29
Value-1.0-1.610.0-5.5-8.6-6.3-0.2-1.9-5.3
Percentage of ProfitLoss-0.9-2.526.8-12.5-30.2-18.6-0.7-6.2-18.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.1-0.21.5-0.9-1.7-1.0-0.0-0.3-0.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mli:TecumsehProductsHoldingsLLC0.00.00.00.00.00.00.00.00.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value1012818675619500602543608666611559645662640523550614577472506544532471535555537537602649574487528582559504514594577491585652687526507540485
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems

mli:CorporateAndEliminations


Revenue
Period End2021-06-262021-03-272020-09-262020-06-272020-03-282019-09-28
Value-10.772-5.478-6.744-8.598-6.568-8.696
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.1-0.7-1.1-1.7-1.1-1.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.1-0.7-1.1-1.7-1.1-1.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mli:CorporateAndEliminations100.0100.0100.0100.0100.0100.0

us-gaap:IntersegmentElimination


Revenue
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-29
Value-10.772-5.478-5.339-6.744-8.598-6.568-5.041-8.696-3.271-5.42-3.218-4.895-5.473-4.299-13.986-13.7810.282-4.971-3.464-6.326-3.687-1.308-2.16-2.434-2.123-3.092-2.891-2.906-2.908-3.683-2.039-3.164-3.435
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.1-0.7-0.8-1.1-1.7-1.1-0.9-1.4-0.5-0.9-0.6-0.8-0.8-0.7-2.7-2.50.0-0.9-0.7-1.2-0.7-0.2-0.5-0.5-0.4-0.6-0.5-0.5-0.4-0.6-0.4-0.6-0.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.1-0.7-0.8-1.1-1.7-1.1-0.9-1.4-0.5-0.9-0.6-0.8-0.8-0.7-2.7-2.50.0-0.9-0.7-1.2-0.7-0.2-0.5-0.5-0.4-0.6-0.5-0.5-0.4-0.6-0.4-0.6-0.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments


Revenue
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-01
Value1023823681625508609548617669617562650668644537564613
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax101.1100.7100.8101.1101.7101.1100.9101.4100.5100.9100.6100.8100.8100.7102.7102.5100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax101.1100.7100.8101.1101.7101.1100.9101.4100.5100.9100.6100.8100.8100.7102.7102.5100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems, us-gaap:ProductOrService

us-gaap:OperatingSegments, mli:BrassRodAndForgings


Revenue
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-01
Value14213110289649991103114115106122135136115112119
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.116.015.214.512.916.516.917.017.118.919.119.020.521.322.020.519.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.116.015.214.512.916.516.917.017.118.919.119.020.521.322.020.519.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mli:BrassRodAndForgings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, mli:FlexDuctAndOtherHVACComponents


Revenue
Period End2021-06-262020-06-27
Value8853
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.710.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.710.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mli:FlexDuctAndOtherHVACComponents100.0100.0

us-gaap:OperatingSegments, mli:OemComponentsTubeAndAssemblies


Revenue
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-01
Value6457495460724451575747556158485297
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.47.07.38.812.012.18.38.48.69.48.58.69.29.19.29.515.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.47.07.38.812.012.18.38.48.69.48.58.69.29.19.29.515.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mli:OemComponentsTubeAndAssemblies100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, mli:OtherProducts


Revenue
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-01
Value2495817966777078797464702525222121
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.411.712.012.913.412.812.912.912.012.211.610.83.84.04.34.03.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.411.712.012.913.412.812.912.912.012.211.610.83.84.04.34.03.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mli:OtherProducts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, mli:TubeAndFittings


Revenue
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-01
Value567426353320256302284320358307275340379358292319318
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax56.052.152.451.851.250.152.452.753.850.349.252.757.255.955.858.051.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax56.052.152.451.851.250.152.452.753.850.349.252.757.255.955.858.051.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mli:TubeAndFittings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, mli:ValvesAndPlumbingSpecialties


Revenue
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-01
Value136113938161575763596168626665595856
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.413.813.913.112.29.610.510.49.010.112.29.710.010.311.310.59.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.413.813.913.112.29.610.510.49.010.112.29.710.010.311.310.59.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mli:ValvesAndPlumbingSpecialties100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, mli:BrassRodAndForgings, mli:IndustrialMetals


Revenue
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-01
Value14213110289649991103114115106122135136115112119
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.116.015.214.512.916.516.917.017.118.919.119.020.521.322.020.519.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.116.015.214.512.916.516.917.017.118.919.119.020.521.322.020.519.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mli:BrassRodAndForgings mli:IndustrialMetals100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, mli:FlexDuctAndOtherHVACComponents, mli:Climate


Revenue
Period End2021-06-262020-06-27
Value8853
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.710.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.710.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mli:FlexDuctAndOtherHVACComponents mli:Climate100.0100.0

us-gaap:OperatingSegments, mli:OemComponentsTubeAndAssemblies, mli:Climate


Revenue
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-01
Value4338333532362732363728353936283236
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.34.74.95.86.66.15.05.35.56.15.15.55.95.65.45.96.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.34.74.95.86.66.15.05.35.56.15.15.55.95.65.45.96.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mli:OemComponentsTubeAndAssemblies mli:Climate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, mli:OemComponentsTubeAndAssemblies, mli:IndustrialMetals


Revenue
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-01
Value12119.6031110101011121311121415121312
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.31.31.41.82.11.81.91.91.92.12.11.92.22.42.42.42.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.31.31.41.82.11.81.91.91.92.12.11.92.22.42.42.42.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mli:OemComponentsTubeAndAssemblies mli:IndustrialMetals100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, mli:OemComponentsTubeAndAssemblies, mli:PipingSystems


Revenue
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-01
Value8.4568.5556.6677.40216257.3177.0597.4447.2837.457.6187.4487.0627.7416.96247
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.81.01.01.23.44.21.31.21.11.21.31.21.11.11.51.37.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.81.01.01.23.44.21.31.21.11.21.31.21.11.11.51.37.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mli:OemComponentsTubeAndAssemblies mli:PipingSystems100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, mli:OtherProducts, mli:Climate


Revenue
Period End2021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-01
Value72606153565258595243460.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.98.910.010.69.49.69.68.98.67.97.10.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.98.910.010.69.49.69.68.98.67.97.10.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mli:OtherProducts mli:Climate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0

us-gaap:OperatingSegments, mli:OtherProducts, mli:IndustrialMetals


Revenue
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-01
Value2422211813201720202120242525222121
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.42.83.12.92.73.43.33.33.13.63.73.73.84.04.34.03.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.42.83.12.92.73.43.33.33.13.63.73.73.84.04.34.03.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mli:OtherProducts mli:IndustrialMetals100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, mli:TubeAndFittings, mli:PipingSystems


Revenue
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-01
Value567426353320256302284320358307275340379358292319318
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax56.052.152.451.851.250.152.452.753.850.349.252.757.255.955.858.051.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax56.052.152.451.851.250.152.452.753.850.349.252.757.255.955.858.051.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mli:TubeAndFittings mli:PipingSystems100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, mli:ValvesAndPlumbingSpecialties, mli:PipingSystems


Revenue
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-01
Value136113938161575763596168626665595856
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.413.813.913.112.29.610.510.49.010.112.29.710.010.311.310.59.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.413.813.913.112.29.610.510.49.010.112.29.710.010.311.310.59.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mli:ValvesAndPlumbingSpecialties mli:PipingSystems100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, mli:Climate


Revenue
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-28
Value131111939786937990968972813936283236342730313024283125
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.013.613.815.817.215.514.614.914.414.712.912.65.95.65.45.96.05.95.95.95.85.85.35.35.74.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.013.613.815.817.215.514.614.914.414.712.912.65.95.65.45.96.05.95.95.95.85.85.35.35.74.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mli:Climate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, mli:IndustrialMetals


Revenue
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-28
Value18016413311888131120135147150139158175177150147154149127131127134131139145151
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.820.119.819.217.721.822.122.322.224.724.924.626.527.728.726.825.225.927.025.923.525.227.926.126.128.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.820.119.819.217.721.822.122.322.224.724.924.626.527.728.726.825.225.927.025.923.525.227.926.126.128.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mli:IndustrialMetals100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, mli:PipingSystems


Revenue
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-28
Value711547454409334385349390425376350410453430359384422398320351388368327367379361
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax70.366.967.366.166.863.964.264.263.961.562.863.668.467.368.669.868.869.067.969.471.469.269.468.768.467.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax70.366.967.366.166.863.964.264.263.961.562.863.668.467.368.669.868.869.067.969.471.469.269.468.768.467.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mli:PipingSystems100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees


Revenue
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-29
Value1039710073103106125129120
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.311.914.911.920.717.723.021.318.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.311.914.911.920.717.723.021.318.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees100.0100.0100.0100.0100.0100.0100.0100.0100.0

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:SellingGeneralAndAdministrativeExpense


Selling
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value43454438334240404040363838343633343534323435313233322934353235323431323233313334333531283337
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.35.66.66.26.77.17.56.76.16.66.66.05.85.37.06.05.66.17.46.46.36.76.86.06.06.15.55.85.45.67.36.26.05.66.46.25.65.56.75.85.15.16.05.76.27.7

us-gaap:SellingGeneralAndAdministrativeExpense us-gaap:ConsolidationItems

mli:CorporateAndEliminations


Selling
Period End2021-06-262021-03-272020-09-262020-06-272020-03-282019-09-28
Value10109.6189.443128.925
Percentage of SellingGeneralAndAdministrativeExpense24.824.225.128.129.021.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.11.31.61.92.11.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mli:CorporateAndEliminations-101.1-200.8-142.6-109.8-188.7-102.6

us-gaap:SellingGeneralAndAdministrativeExpense us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, mli:Climate


Selling
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-28
Value7.286.987.1996.4516.4576.6996.0499.9616.0698.3064.9176.892.512.6092.5152.3122.4562.4762.3252.3572.4562.5232.482.2832.51.854
Percentage of SellingGeneralAndAdministrativeExpense16.615.416.116.819.215.714.924.515.020.413.417.76.57.76.96.97.17.06.77.37.17.17.87.17.55.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.70.91.11.01.31.11.11.60.91.40.91.10.40.40.50.40.40.40.50.50.50.50.50.40.40.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mli:Climate5.56.37.76.67.57.27.611.06.39.26.88.46.47.29.07.16.77.28.47.97.88.210.08.07.97.2

us-gaap:OperatingSegments, mli:IndustrialMetals


Selling
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-28
Value2.4483.3713.8762.9922.4773.2213.0793.1153.023.1453.5933.0863.4493.3733.1292.6672.8643.233.1733.1253.6193.2452.9113.0442.3022.698
Percentage of SellingGeneralAndAdministrativeExpense5.67.48.77.87.47.57.67.67.57.79.87.99.09.98.58.08.39.19.19.610.59.19.19.46.98.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.40.60.50.50.50.60.50.50.50.60.50.50.50.60.50.50.60.70.60.70.60.60.60.40.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mli:IndustrialMetals1.42.02.92.52.82.52.62.32.02.12.61.92.01.92.11.81.92.22.52.42.82.42.22.21.61.8

us-gaap:OperatingSegments, mli:PipingSystems


Selling
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-28
Value2324231915201818191716172019201718181616161816161617
Percentage of SellingGeneralAndAdministrativeExpense53.153.053.150.345.347.845.846.049.444.046.044.753.656.555.153.753.351.848.151.448.051.153.051.150.252.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.32.93.53.13.03.43.43.13.02.93.02.73.13.03.93.23.03.23.53.33.03.43.63.13.03.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mli:PipingSystems3.34.45.24.74.65.35.34.84.74.84.84.24.54.55.64.74.44.65.24.74.35.05.24.54.44.8

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252009-12-26
Value17891698152814201323144513701402141714751369142114961336132012491297130414471426142013611338137313441324132813271349128212471260120911421104103912721445134713581358138212581180
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidationItems

mli:CorporateAndEliminations


Assetsus-gaap:
Period End2021-06-262020-12-26
Value121139
Percentage of Assets6.89.1
Percentage of Assets6.89.1
Percentage of Assets mli:CorporateAndEliminations100.0100.0

us-gaap:CorporateNonSegment


Assetsus-gaap:
Period End2020-12-262019-12-282018-12-292017-12-302016-12-31
Value139162130232393
Percentage of Assets9.111.99.517.627.2
Percentage of Assets9.111.99.517.627.2
Percentage of Assets us-gaap:CorporateNonSegment100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, mli:Climate


Assetsus-gaap:
Period End2021-06-262020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-27
Value27225824924673666138
Percentage of Assets15.216.918.218.05.64.64.62.9
Percentage of Assets15.216.918.218.05.64.64.62.9
Percentage of Assets us-gaap:OperatingSegments mli:Climate100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, mli:IndustrialMetals


Assetsus-gaap:
Period End2021-06-262020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-27
Value173152161173212160153159
Percentage of Assets9.710.011.812.716.111.111.412.0
Percentage of Assets9.710.011.812.716.111.111.412.0
Percentage of Assets us-gaap:OperatingSegments mli:IndustrialMetals100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, mli:PipingSystems


Assetsus-gaap:
Period End2021-06-262020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-27
Value1222977796818801826811786
Percentage of Assets68.364.058.159.760.757.160.659.2
Percentage of Assets68.364.058.159.760.757.160.659.2
Percentage of Assets us-gaap:OperatingSegments mli:PipingSystems100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252009-12-26
Value815830727680633780708778812893806838924783784719791798511489501474479525500517532520556524511566560586566514337523462473476522443441
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets45.648.947.647.947.854.051.755.557.460.558.959.061.858.659.457.661.061.235.334.335.334.935.838.237.239.040.139.241.340.941.044.946.351.351.349.526.636.234.334.935.037.835.237.4

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252009-12-26
Value17891698152814201323144513701402141714751369142114961336132012491297130414471426142013611338137313441324132813271349128212471260120911421104103912721445134713581358138212581180
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252009-12-26
Value945841776717670645643607588565548568557538522516493467898893872854827815811774762774760725703661617525506495904893855856854832788713
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets52.849.550.850.550.744.746.943.341.538.340.040.037.340.339.541.438.035.962.162.761.462.861.859.460.358.557.458.356.456.656.452.551.046.045.947.671.161.863.563.062.960.262.660.4

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252009-12-26
Value108198682572967077469373073478470276193776273969274375689487386582080082593094194192494688587492484878574768994411221026103210161035912808
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets60.558.154.051.450.753.550.652.151.853.251.353.562.757.156.055.557.357.961.861.360.960.359.860.169.271.070.969.670.169.070.173.370.168.767.766.374.277.676.276.074.874.972.568.5

us-gaap:AssetsCurrent us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees


Assets
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272019-12-28
Value194171167177195198
Percentage of AssetsCurrent18.017.420.324.329.228.6
Percentage of Assets10.910.111.012.514.814.5
Percentage of Assets us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees0.00.00.00.00.00.0

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-12-252010-09-252010-06-262010-03-272009-12-262008-12-272007-12-29
Value1101291191131231549710091977210428191120106167146351297283270274220299326352259242233311322261183198165373526514448345413394394400397397346278308
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.27.67.88.09.310.77.17.26.56.65.37.418.86.89.18.512.911.324.320.919.919.820.516.122.224.726.519.617.918.225.025.621.616.118.015.929.436.438.233.025.430.00.031.30.00.00.029.30.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012016-12-312015-12-26
Value1251491271141241719810294997710928493126110172360278
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.08.88.38.19.411.97.27.36.66.75.67.719.07.09.68.813.324.920.8

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252009-12-26
Value542447357320273308269319316309273308333321244276287312256295305275251299307307275332367319271312305311271261299315250315327353269228
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets30.326.323.422.520.721.419.722.822.421.020.021.722.324.118.522.122.223.917.720.721.520.318.821.822.823.220.725.027.224.921.824.825.327.324.625.123.521.818.623.224.125.621.419.4

Inventory Net

us-gaap:InventoryNet

us-gaap:InventoryNet


Inventory
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252009-12-26
Value384365315271244270292277300344329313294329327284252251242251249240239250278246256282291279251234222228229224229236219214296231209191
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets21.521.520.619.118.518.721.319.821.223.424.122.019.724.624.822.719.519.316.717.617.617.717.918.320.718.619.321.321.621.820.218.618.420.020.821.618.016.316.315.821.916.716.716.2

Inventory Finished Goods

us-gaap:InventoryFinishedGoods

us-gaap:InventoryFinishedGoods


Inventory
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022010-12-25
Value197201186159140154163149164190188171169178180165162163149157154154161162163167168180181186159142150167148160154166143166179131
Percentage of InventoryFinishedGoods100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets11.011.912.211.210.610.712.010.711.612.913.812.111.313.313.613.212.512.610.311.010.911.412.111.912.212.612.713.613.414.512.811.312.414.613.415.412.111.510.712.313.210.5

Inventory Raw Materials And Supplies

us-gaap:InventoryRawMaterialsAndSupplies

us-gaap:InventoryRawMaterialsAndSupplies


Inventory
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022010-12-25
Value12211985786075856981101898775941087765665763645358557053536353485449332846465143422.9985747
Percentage of InventoryRawMaterialsAndSupplies100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.97.05.65.54.65.26.35.05.86.96.56.25.07.18.26.25.15.14.04.54.54.04.44.05.24.04.04.84.03.84.43.92.82.54.24.54.03.03.10.24.23.8

Other Assets Current

us-gaap:OtherAssetsCurrent

us-gaap:OtherAssetsCurrent


Other
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252009-12-26
Value4443332428403333253226342720462535454428273434544559574036443126293321172022223427171924
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.52.62.21.82.22.82.52.41.82.22.02.51.81.53.52.12.73.53.12.01.92.52.64.03.44.54.33.02.73.52.52.12.52.91.91.61.61.61.62.52.01.31.62.1

Noncurrent Assets

us-gaap:NoncurrentAssets

us-gaap:NoncurrentAssets


Noncurrent
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-29
Value376363370304295280386373356
Percentage of NoncurrentAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets24.626.527.123.120.420.929.129.932.3

us-gaap:NoncurrentAssets us-gaap:StatementGeographical

country:CA


Noncurrent
Period End2020-12-262019-12-282018-12-29
Value293133
Percentage of NoncurrentAssets7.98.78.9
Percentage of Assets1.92.32.4
Percentage of Assets country:CA0.00.00.0

country:GB


Noncurrent
Period End2020-12-262019-12-282018-12-29
Value301816
Percentage of NoncurrentAssets8.25.24.4
Percentage of Assets2.01.41.2
Percentage of Assets country:GB0.00.00.0

country:MX


Noncurrent
Period End2020-12-262019-12-282018-12-29
Value0.5030.5590.511
Percentage of NoncurrentAssets0.10.20.1
Percentage of Assets0.00.00.0
Percentage of Assets country:MX0.00.00.0

country:US


Noncurrent
Period End2020-12-262019-12-282018-12-29
Value289286295
Percentage of NoncurrentAssets76.979.079.8
Percentage of Assets18.920.921.6
Percentage of Assets country:US0.00.00.0

srt:Asia


Noncurrent
Period End2020-12-262019-12-282018-12-29
Value262524
Percentage of NoncurrentAssets6.97.16.7
Percentage of Assets1.71.91.8
Percentage of Assets srt:Asia0.00.00.0

Assets Noncurrent

us-gaap:AssetsNoncurrent us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:AssetsNoncurrent

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees


Assets
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272019-12-28
Value738278798087
Percentage of AssetsNoncurrent100.0100.0100.0100.0100.0100.0
Percentage of Assets4.14.85.15.66.16.4
Percentage of Assets us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees0.00.00.00.00.00.0

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-25
Value939895891822802786738732720673691
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets61.465.365.162.355.458.755.658.765.350.054.9

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

us-gaap:Building


Property
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-25
Value218203201144144128120132113110115
Percentage of PropertyPlantAndEquipmentGross23.222.822.617.618.116.316.318.115.816.416.8
Percentage of Assets14.314.914.710.910.09.69.010.610.38.29.2
Percentage of Assets us-gaap:Building0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConstructionInProgress


Property
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-25
Value2818229.2743047442524104.445
Percentage of PropertyPlantAndEquipmentGross3.02.12.51.13.86.16.13.53.41.50.6
Percentage of Assets1.91.41.70.72.13.63.42.12.20.80.4
Percentage of Assets us-gaap:ConstructionInProgress0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LandAndLandImprovements


Property
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-25
Value3331321819131213111012
Percentage of PropertyPlantAndEquipmentGross3.63.63.62.32.51.71.71.81.51.61.8
Percentage of Assets2.22.32.31.41.41.00.91.11.00.81.0
Percentage of Assets us-gaap:LandAndLandImprovements0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MachineryAndEquipment


Property
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-25
Value658640635649607597561561571541558
Percentage of PropertyPlantAndEquipmentGross70.171.671.379.075.775.976.076.679.380.580.8
Percentage of Assets43.146.746.449.242.044.642.245.051.840.244.4
Percentage of Assets us-gaap:MachineryAndEquipment0.00.00.00.00.00.00.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-25
Value562532520517507506492487487469461
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets36.838.838.039.235.037.837.139.144.234.836.7

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252009-12-26
Value385384376368362366363361365369370360284300304283284296295289297278280270261244245246245243244222238233233228212206203207223227229250
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets21.522.724.626.027.425.426.525.825.825.127.125.419.022.423.122.721.922.720.420.321.020.520.919.719.418.518.518.518.219.019.617.719.720.521.122.016.714.315.115.316.416.518.221.2

Investments In Affiliates Subsidiaries Associates And Joint Ventures

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures


Investments
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262014-12-27
Value3638372732444846475058587070767375737779706865630.0
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets2.12.32.51.92.53.13.53.33.43.44.24.14.75.25.85.95.85.65.35.64.95.14.94.60.0

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252009-12-26
Value1691681671851531601531521531531501501391371301391371241231281281211201631011021021031081199494104104104104102102102102102102102102
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.59.911.013.111.611.111.210.910.810.411.010.69.310.39.911.210.69.58.69.09.08.99.011.97.57.77.77.88.09.37.67.58.69.29.510.18.07.17.67.57.57.48.18.7

us-gaap:Goodwill mli:AssetAcquisition

mli:WielandKesslerLLCAssetAcquisition


Goodwillmli:
Period End2020-08-03
Value11
Percentage of Goodwill0.0
Percentage of Assets0.0
Percentage of Assets mli:WielandKesslerLLCAssetAcquisition0.0

us-gaap:Goodwill us-gaap:StatementBusinessSegments

mli:Climate


Goodwillus-gaap:
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-27
Value2321224.4164.4164.4162.329
Percentage of Goodwill14.114.114.83.43.63.72.3
Percentage of Assets1.51.61.60.30.30.30.2
Percentage of Assets mli:Climate0.00.00.00.00.011.10.0

mli:IndustrialMetals


Goodwillus-gaap:
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-27
Value0.0010.0010.0010.0010.0010.0010.0
Percentage of Goodwill0.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets mli:IndustrialMetals0.00.00.00.00.00.00.0

mli:PipingSystems


Goodwillus-gaap:
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-27
Value144131128125119115100
Percentage of Goodwill85.985.985.296.696.496.397.7
Percentage of Assets9.49.69.49.58.38.77.6
Percentage of Assets mli:PipingSystems0.00.00.00.00.014.30.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


Intangible
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262014-12-27
Value767777626356606062616164394042363635363739404018
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.34.65.14.44.83.94.44.34.44.24.54.62.63.03.23.02.82.72.52.62.73.03.01.4

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-28
Value776061423640185.5
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.14.44.53.22.53.01.40.4

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

mli:OtherGross


Finite
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-27
Value0.5851.032.089-0.41-0.481-0.5150.424
Percentage of FiniteLivedIntangibleAssetsNet0.81.73.4-1.0-1.3-1.32.3
Percentage of Assets0.00.10.2-0.0-0.0-0.00.0
Percentage of Assets mli:OtherGross0.00.00.00.00.00.00.0

mli:PatentsAndTechnology


Finite
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-27
Value1615155.8054.7434.4752.108
Percentage of FiniteLivedIntangibleAssetsNet21.926.224.713.813.111.011.4
Percentage of Assets1.11.11.10.40.30.30.2
Percentage of Assets mli:PatentsAndTechnology0.00.00.00.00.00.00.0

us-gaap:CustomerRelationships


Finite
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-27
Value49363631262911
Percentage of FiniteLivedIntangibleAssetsNet64.060.059.475.974.672.361.3
Percentage of Assets3.22.62.72.41.92.20.9
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.00.00.00.0

us-gaap:NoncompeteAgreements


Finite
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-27
Value0.1620.3430.8181.3371.8633.6963.188
Percentage of FiniteLivedIntangibleAssetsNet0.20.61.33.25.29.117.3
Percentage of Assets0.00.00.10.10.10.30.2
Percentage of Assets us-gaap:NoncompeteAgreements0.00.00.00.00.00.00.0

us-gaap:OtherIntangibleAssets


Finite
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-27
Value77606142364018
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.14.44.53.22.53.01.4
Percentage of Assets us-gaap:OtherIntangibleAssets0.00.00.00.00.00.00.0

us-gaap:TradeNames


Finite
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-27
Value106.9066.9853.4023.0553.5861.418
Percentage of FiniteLivedIntangibleAssetsNet13.211.511.38.18.48.87.7
Percentage of Assets0.70.50.50.30.20.30.1
Percentage of Assets us-gaap:TradeNames0.00.00.00.00.00.00.0

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302019-01-012018-12-29
Value26282922171826252829300.0
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets1.51.71.91.61.31.32.01.82.02.00.00.0

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252009-12-26
Value1213142323242525252525262526282220192018193131505136385449333419181919161414141616161418
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.80.91.71.81.71.91.81.81.81.91.91.72.02.11.81.61.51.41.31.42.32.33.73.82.72.94.13.72.62.71.51.61.71.71.61.11.01.11.21.21.21.21.6

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252009-12-26
Value190177147108939485102106107103121112115102125105117103921059888113891001009210110980767682876589976565861236773
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.610.49.77.67.16.56.27.37.57.37.68.57.58.67.810.08.29.07.16.57.47.26.68.36.77.67.67.07.58.56.56.16.37.27.96.37.16.84.94.86.48.95.46.3

Debt Current

us-gaap:DebtCurrent

us-gaap:DebtCurrent


Debt
Period End2020-12-262019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252009-12-26
Value417.537.3872.8915.0017.1019.254599.087161414141316164.58311131831363760322933435327122542415250433224
Percentage of DebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.70.50.50.20.30.50.74.00.71.21.21.11.10.91.21.10.30.91.01.32.42.72.84.52.52.32.63.64.72.51.22.02.93.13.93.73.12.52.1

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252009-12-26
Value362444339252229229234246226220232244273213242245219231218202217202209229209224238233268235219244240281258211240275213232231278195183
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets20.326.222.217.817.315.917.117.616.015.017.017.218.316.018.419.616.917.815.114.215.314.915.616.715.616.917.917.619.918.417.619.419.924.623.420.318.919.115.817.117.120.115.515.5

us-gaap:LiabilitiesCurrent us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees


Liabilities
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272019-12-28
Value145127120151165147
Percentage of LiabilitiesCurrent40.128.635.459.972.063.1
Percentage of Assets8.17.57.910.712.510.8
Percentage of Assets us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees0.00.00.00.00.00.0

Long Term Debt Current

us-gaap:LongTermDebtCurrent

us-gaap:LongTermDebtCurrent


Long
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-28
Value6.428106416.6846.5437.5917.53
Percentage of LongTermDebtCurrent100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.46.32.70.50.50.50.5

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302019-01-012018-12-29
Value6546000.06567000.06259000.06320000.04623000.05047000.05250000.03832000.04754000.04737000.04900000.00
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.40.40.40.40.30.30.40.30.30.30.00.0

Other Liabilities Current

us-gaap:OtherLiabilitiesCurrent

us-gaap:OtherLiabilitiesCurrent


Other
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252009-12-26
Value11911598828489949579738375696189716771675865717368676159697166721008812010910191107677862866160
Percentage of OtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.76.86.45.86.46.26.96.85.65.06.15.34.74.66.85.75.25.54.64.14.65.35.55.05.04.64.55.25.35.25.88.07.310.59.99.87.27.45.05.84.66.34.95.1

Taxes Payable Current

us-gaap:TaxesPayableCurrent

us-gaap:TaxesPayableCurrent


Taxes
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282013-03-302012-12-292011-12-312010-12-25
Value6.34.75.09.24.6100.97.3176.29.38.6
Percentage of TaxesPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.30.40.70.30.80.10.61.50.60.70.7

Liabilities Noncurrent

us-gaap:LiabilitiesNoncurrent us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:LiabilitiesNoncurrent

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees


Liabilities
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272019-12-28
Value494950504651
Percentage of LiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0
Percentage of Assets2.82.93.33.63.53.7
Percentage of Assets us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees0.00.00.00.00.00.0

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2020-12-262015-12-262014-12-272013-12-282012-12-292012-09-292012-06-302011-12-312010-12-25
Value32821624123523422033197190
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets21.516.118.218.921.321.22.614.715.1

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


Long
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252009-12-26
Value3502862863423234683784344795594895105584784483884894892132132132062042042042052052052052062062062062072072077.8156156156156157158158
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets19.616.918.724.224.432.427.630.933.838.035.735.937.335.834.031.137.737.514.815.015.015.115.314.915.215.515.515.515.216.116.516.417.118.118.820.00.610.811.611.511.611.412.613.4

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-31
Value16171618191921171818161719181919191819
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.91.01.11.31.51.31.51.21.31.31.21.21.31.41.51.61.51.41.4

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Pension
Period End2020-12-262019-12-282018-12-292017-12-30
Value11111315
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0
Percentage of Assets0.80.81.01.2
Percentage of Assets us-gaap:OtherPostretirementBenefitPlansDefinedBenefit0.00.00.00.0

us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-262019-12-282018-12-292017-12-30
Value127.271210
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent104.262.595.667.3
Percentage of Assets0.80.50.90.8
Percentage of Assets us-gaap:PensionPlansDefinedBenefit0.00.00.00.0

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252009-12-26
Value2826242119191816161614141414131312383742463132323332333332323232323131303029292828272725
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.61.61.61.51.51.41.41.21.11.11.11.01.01.11.11.11.03.02.63.03.22.32.42.42.52.52.52.52.42.62.62.62.72.72.82.92.42.12.22.12.12.02.22.2

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252009-12-26
Value20141412109.80110101519181822212112116.4476.2842.1182.932.9732.443.572.793.1071.3890.5811.3060.6180.8491.1411.1040.9451.6670.9850.9660.8891.132.1871.8770.8080.8240.887
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.10.91.00.90.80.70.70.71.11.41.31.31.51.61.61.00.90.50.40.10.20.20.20.30.20.20.10.00.10.00.10.10.10.10.20.10.10.10.10.20.10.10.10.1

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302019-01-012018-12-29
Value19202116131422222425260.0
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets1.11.21.41.21.01.01.61.61.71.70.00.0

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-26
Value6489000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0
Percentage of Assets0.4

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-26
Value4553000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0
Percentage of Assets0.3

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-26
Value3382000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0
Percentage of Assets0.2

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-26
Value2376000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets0.2

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-26
Value7254000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets0.5

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2020-12-262019-12-282019-09-282019-06-29
Value27272629
Percentage of OperatingLeaseLiability100.0100.0100.0100.0
Percentage of Assets1.82.01.92.1

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-262019-12-28
Value3135
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0
Percentage of Assets2.12.6

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-26
Value3546000.0
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets0.2

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252009-12-26
Value945841776717670645643607588565548568557538522516493467898893872854827815811774762774760725703661617525506495904893855856854832788713
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets52.849.550.850.550.744.746.943.341.538.340.040.037.340.339.541.438.035.962.162.761.462.861.859.460.358.557.458.356.456.656.452.551.046.045.947.671.161.863.563.062.960.262.660.4

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252009-12-26
Value973868801739690665662624604581563583572553536530506506936936918886859848844807795807792758735694649556537525934922884885882859815738
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets54.451.152.452.152.246.048.344.542.639.541.141.038.241.440.642.439.038.864.765.764.765.164.261.862.861.059.960.858.759.159.055.153.748.748.750.573.463.865.765.165.062.264.862.6

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

mli:AccumulatedOtherComprehensiveIncomeAttributabletoUnconsolidatedAffiliates


Stockholders
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022015-12-26
Value-0.0910.662-1.325-1.757-2.0960.694-1.1930.474-0.073-0.307-0.3541.1458.0527.9316.874.8895.6244.3775.9756.551.4380.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.00.1-0.2-0.2-0.30.1-0.20.1-0.0-0.1-0.10.21.41.41.30.91.10.90.60.70.20.0
Percentage of Assets-0.00.0-0.1-0.1-0.20.0-0.10.0-0.0-0.0-0.00.10.50.60.50.40.40.30.40.50.10.0
Percentage of Assets mli:AccumulatedOtherComprehensiveIncomeAttributabletoUnconsolidatedAffiliates0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022015-12-26
Value-17.22-17.294-17.203-22.57-22.4-21.116-21.855-23.76-24.537-25.213-24.967-20.859-21.129-22.079-20.61-23.618-23.411-23.006-23.046-24.984-25.727-28.429
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-1.8-2.0-2.1-3.1-3.2-3.2-3.3-3.8-4.1-4.3-4.4-3.6-3.7-4.0-3.8-4.5-4.6-4.5-2.5-2.7-2.8-3.3
Percentage of Assets-1.0-1.0-1.1-1.6-1.7-1.5-1.6-1.7-1.7-1.7-1.8-1.5-1.4-1.7-1.6-1.9-1.8-1.8-1.6-1.8-1.8-2.1
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterest


Stockholders
Period End2020-12-262019-12-282018-12-29
Value0.9840.476-0.214
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.10.1-0.0
Percentage of Assets0.10.0-0.0
Percentage of Assets us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterest0.00.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Stockholders
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302017-12-30
Value-1.861.4770.9840.6680.517-2.8810.476-0.0810.1141.043-0.2140.063-0.0680.847
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.20.20.10.10.1-0.40.1-0.00.00.2-0.00.0-0.00.2
Percentage of Assets-0.10.10.10.00.0-0.20.0-0.00.00.1-0.00.0-0.00.1
Percentage of Assets us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022015-12-262014-12-272013-12-282012-12-292011-12-312010-12-252009-12-262008-12-272007-12-29
Value-48.262-48.528-54.883-81.111-89.799-90.165-68.77-79.823-74.754-72.881-79.792-62.957-58.101-47.614-51.056-54.377-60.454-62.041-66.956-58.401-59.472-54.99-42.923-10.819-42.623-49.409-37.046-36.104-48.11331
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-5.0-5.6-6.9-11.0-13.0-13.6-10.4-12.8-12.4-12.5-14.2-10.8-10.2-8.6-9.5-10.3-11.9-12.2-7.2-6.2-6.5-6.4-5.4-1.5-7.9-5.6-4.5-4.90.00.0
Percentage of Assets-2.7-2.9-3.6-5.7-6.8-6.2-5.0-5.7-5.3-4.9-5.8-4.4-3.9-3.6-3.9-4.4-4.7-4.8-4.6-4.1-4.2-4.1-3.2-0.9-3.9-3.7-2.9-3.10.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Stockholders
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022015-12-26
Value-29.091-33.373-37.339-57.452-65.82-66.862-46.198-56.456-50.258-48.404-54.257-43.306-44.956-33.363-38.163-35.533-42.684-43.404-49.965-39.411-34.712-24.773
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-3.0-3.8-4.7-7.8-9.5-10.0-7.0-9.0-8.3-8.3-9.6-7.4-7.9-6.0-7.1-6.7-8.4-8.6-5.3-4.2-3.8-2.9
Percentage of Assets-1.6-2.0-2.4-4.0-5.0-4.6-3.4-4.0-3.5-3.3-4.0-3.0-3.0-2.5-2.9-2.8-3.3-3.3-3.5-2.8-2.4-1.9
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-252009-12-262008-12-272007-12-29
Value285282280277281280278276280278276274277276274273271268267267266263262262259
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest29.332.635.037.640.842.142.144.246.447.949.247.148.650.051.229.231.533.836.349.830.232.335.50.00.0
Percentage of Assets15.916.618.319.621.319.420.319.719.818.920.219.318.620.720.818.920.320.221.424.319.820.922.20.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-252009-12-262008-12-272007-12-29
Value0.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.8020.4010.4010.4010.4010.4010.4010.401
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.00.00.10.00.0
Percentage of Assets0.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Stockholders
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-252009-12-262008-12-272007-12-29
Value28262421191918161616141414141337323332312927252422
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest2.93.13.02.92.82.92.82.72.72.82.62.52.52.62.64.03.84.24.45.83.33.33.50.00.0
Percentage of Assets1.61.61.61.51.51.41.41.21.11.11.11.01.01.11.12.62.42.52.62.82.22.22.20.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-252009-12-262008-12-272007-12-29
Value11761075101998895192990388085783482480378876174311411063992908749682611540550484
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest120.8123.9127.3133.8137.9139.8136.4141.0141.8143.5146.4137.7137.9137.7138.7121.9123.7124.8123.4139.477.174.973.10.00.0
Percentage of Assets65.863.366.769.671.964.365.962.860.556.660.256.552.756.956.378.979.474.872.867.950.648.645.80.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-252009-12-262008-12-272007-12-29
Value-468.784-469.251-468.919-468.716-474.17-474.957-470.243-470.066-475.524-476.121-474.24-447.253-451.74-452.181-445.723-450.338-453.228-457.102-461.593-468.473-44.62-49.131-53.514-64.484-65.859
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-48.1-54.1-58.5-63.4-68.7-71.4-71.0-75.3-78.7-81.8-84.2-76.7-79.0-81.8-83.2-48.1-52.7-57.5-62.7-87.1-5.0-6.0-7.20.00.0
Percentage of Assets-26.2-27.6-30.7-33.0-35.8-32.8-34.3-33.5-33.6-32.3-34.6-31.5-30.2-33.8-33.8-31.1-33.9-34.4-37.0-42.4-3.3-3.9-4.50.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252009-12-26
Value802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0802000.0401000.0401000.0401000.0401000.0401000.0401000.0401000.0401000.0401000.0401000.0401000.0401000.0401000.0401000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital

us-gaap:AdditionalPaidInCapital

us-gaap:AdditionalPaidInCapital


Additional
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272014-12-27
Value285282280277281280278276280278276274277276274272274273273271274273271269270268
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets15.916.618.319.621.319.420.319.719.818.920.219.318.620.720.821.821.220.918.919.019.420.120.319.620.120.2

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252009-12-26
Value11761075101998895192990388085783482480378876174374372770511411130111010871063105310391010992979959928908896860772749736725711682673666648611540
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets65.863.366.769.671.964.365.962.860.556.660.256.552.756.956.359.556.054.078.979.378.179.979.476.777.376.374.873.771.172.472.871.171.167.667.970.957.049.250.649.549.146.948.645.8

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252009-12-26
Value-48262000.0-48528000.0-54883000.0-81111000.0-89799000.0-90165000.0-68770000.0-79823000.0-74754000.0-72881000.0-79792000.0-62957000.0-58101000.0-47614000.0-51056000.0-54377000.0-60454000.0-62041000.0-66956000.0-58401000.0-59472000.0-53547000.0-54990000.0-55084000.0-44195000.0-49429000.0-42923000.0-15309000.0-8729000.0-10785000.0-10819000.0-39327000.0-46375000.0-48057000.0-42623000.0-39959000.0-45950000.0-41798000.0-49409000.0-38714000.0-29214000.0-31054000.0-37046000.0-36104000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-2.7-2.9-3.6-5.7-6.8-6.2-5.0-5.7-5.3-4.9-5.8-4.4-3.9-3.6-3.9-4.4-4.7-4.8-4.6-4.1-4.2-3.9-4.1-4.0-3.3-3.7-3.2-1.2-0.6-0.8-0.9-3.1-3.8-4.2-3.9-3.8-3.6-2.9-3.7-2.8-2.2-2.2-2.9-3.1

Treasury Stock Value

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


Treasury
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252009-12-26
Value4684694684684744744704704754764744474514524454454484494504504534534534534564564574574604604614624674684684694444444448494953
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets26.227.630.733.035.832.834.333.533.632.334.631.530.233.833.835.734.634.431.131.631.933.433.933.033.934.534.434.434.135.937.036.738.641.042.445.23.53.13.33.33.63.63.94.5

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252009-12-26
Value2826242119191816161614141414131312383742463132323332333332323232323131303029292828272725
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.61.61.61.51.51.41.41.21.11.11.11.01.01.11.11.11.03.02.63.03.22.32.42.42.52.52.52.52.42.62.62.62.72.72.82.92.42.12.22.12.12.02.22.2

Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-31
Value2708000.02109000.02238000.02134000.02213000.01985000.02389000.02053000.02295000.02007000.02082000.02047000.01994000.01912000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value31-22.581485411428686788-24.673458662-26.515-9.5474023-11.42255-6.209-44.672582064-14.915355528-10.78284107-64.73725-4.33928-4.2536
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.1-2.87.18.722.94.712.611.213.3-4.08.113.49.5-4.1-1.87.43.9-2.09.1-1.0-7.812.03.911.0-2.77.010.84.7-1.917.318.4-9.93.8-0.85.6-0.87.6

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value-0.118-21.526-14.627-73.366-5.128-32.501-13.145-7.594-4.888-14.83-20.818-153.6965.302-17.884-25.4143.303-5.602-5.709-8.835-9.549-32.732-61.9865228-21.633-10.692-19.294-11.80325-3.319-4.034-7.812-11.539-5.133-5.304-7.30515
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-2.6-2.2-11.9-1.0-5.4-2.4-1.2-0.7-2.4-3.7-23.80.8-2.8-4.90.6-0.9-1.0-1.5-1.5-5.7-12.79.94.8-3.9-2.1-3.8-2.04.4-0.7-0.7-1.2-1.7-1.0-1.0-1.43.2

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value-55.25564-26.0126.271-157.0384-61.955-50.29-87.90160-54.96-107.9251241055-106.998-4.773-188.391-27.88224-1.1-7.667-14.365-13.987228.319-245.114-168.794-3.059-15.6121.22611-3.9823.536-21.3111-0.408
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-5.57.9-3.81.0-31.414.0-11.4-8.3-13.29.9-9.8-16.718.81.610.6-19.4-0.8-32.6-4.63.7-0.2-1.6-2.7-2.44.01.7-47.7-28.4-0.5-3.20.21.7-0.60.7-4.22.2-0.1

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-30
Value-23.3092112-10.133-47.45273-4.4618.431-4.93421-31.911-175.399190-32.80516-61.75
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.32.61.9-1.6-9.512.3-0.81.4-0.73.6-5.7-27.228.8-5.13.1-11.2

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value3.110.142-3.21-1.60.5510.2131.165-1.5260.158-0.2251.672-0.242-0.32-0.94-3.7840.6210.083-0.080.5072.9431.6531.895-7.556-6.817-0.875-0.570.413-0.385-5.039-1.4845.0611.68413-1.313-3.6035.249-0.46-2.47-1.405-0.236-0.625-1.9241.759-4.016-0.747-3.623
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


Depreciation
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282011-10-012011-07-022011-04-022010-09-252010-06-262010-03-27
Value1111111011111010101010109.0069.4568.7288.2668.5958.3558.1369.0169.0618.929.8188.7498.1887.8538.0848.9528.5928.8459.239.7699.9961010
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepreciationDepletionAndAmortization us-gaap:ConsolidationItems

mli:CorporateAndEliminations


Depreciation
Period End2021-06-262021-03-272020-09-262020-06-272020-03-282019-09-28
Value1.1721.1731.0690.8890.8720.745
Percentage of DepreciationDepletionAndAmortization10.510.09.98.07.96.9

us-gaap:DepreciationDepletionAndAmortization us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, mli:Climate


Depreciation
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-28
Value2.7532.6292.4792.5472.7572.4662.3662.4912.1282.3132.1982.1230.6270.6210.6330.6360.6150.6290.6080.6120.6180.5990.610.6080.6140.425
Percentage of DepreciationDepletionAndAmortization24.722.420.723.724.822.321.823.020.321.921.020.07.06.67.37.77.27.57.56.86.86.76.26.97.55.4

us-gaap:OperatingSegments, mli:IndustrialMetals


Depreciation
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-28
Value1.6941.7431.7571.7741.9952.0021.9711.8361.8381.8441.8531.8641.9481.9031.8691.8451.9041.8981.9431.9642.122.1352.0512.1541.6431.655
Percentage of DepreciationDepletionAndAmortization15.214.814.716.518.018.118.217.017.517.517.717.621.620.121.422.322.222.723.921.823.423.920.924.620.121.1

us-gaap:OperatingSegments, mli:PipingSystems


Depreciation
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-28
Value5.5156.216.5545.3625.4565.6995.6685.7515.6525.555.7365.9465.7445.8785.5545.295.5915.3425.085.9055.7875.6496.6075.435.3355.187
Percentage of DepreciationDepletionAndAmortization49.552.854.849.949.251.652.353.153.952.654.856.063.862.263.664.065.063.962.465.563.963.367.362.165.266.1

Increase Decrease In Accounts Receivable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


Increase
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value100893034-35.07946-53.9385.2888.07834-30.859-48.1441772-31.58-13.749-6.64853-29.278-6.5542725-46.411-29.553-12.38836-41.422-37.5595049-57.7533.275-7.585427.911-40.047-11.166669.7641625-80.9744.31610-30.13-30.689
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories

us-gaap:IncreaseDecreaseInInventories


Increase
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value1845361.665-25.813-17.4511-20.905-43.4151321-15.359-29.853-3.50445303.8836.991-7.5762.09-2.8071.631-11.185-35.15312-7.534-16.249-5.7511010-10.5299.271-4.493-0.2125.419-9.64-4.689132668-65.495-13.471-20.048-1.9961.0483.748
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Other Operating Capital Net

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet


Increase
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value152000.095000.0-105000.0788000.0714000.0-3796000.0-369000.0-485000.0973000.0-441000.0-39000.0-743000.0-1486000.0365000.0-140000.0-105000.0148000.0930000.0-1138000.0-522000.0-219000.0291000.0-1462000.0594000.0-494000.0-245000.0-821000.0-131000.0306000.0-398000.0-197000.0-88000.0-618000.0198000.0106000.0-1001000.0-232000.0-38000.0-2281000.0326000.0981000.0-548000.0424000.0138000.0-643000.0280000.0
Percentage of IncreaseDecreaseInOtherOperatingCapitalNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value31-22.581485411428686788-24.673458662-26.515-9.5474023-11.42255-6.209-44.672582064-14.915355528-10.78284107-64.73725-4.33928-4.2536
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.1-2.87.18.722.94.712.611.213.3-4.08.113.49.5-4.1-1.87.43.9-2.09.1-1.0-7.812.03.911.0-2.77.010.84.7-1.917.318.4-9.93.8-0.85.6-0.87.6

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value108633642273228292715262033245.7222272917252728141733211723352415399126161517321210224017181533
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.77.75.46.95.65.45.24.84.22.64.83.15.03.81.14.04.55.23.75.15.15.43.13.36.14.13.34.05.44.33.27.515.74.73.23.03.05.62.61.83.45.93.43.72.97.0

us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Net
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-02
Value-0.191-0.192-7.538-0.264-0.337-0.152-0.177-0.207-0.17-0.243-0.085-0.072-0.027-0.119-0.305-0.246-0.229-0.262-0.234-0.395-0.38
Percentage of NetIncomeLoss-0.2-0.3-20.7-0.6-1.2-0.5-0.6-0.7-0.6-1.5-0.3-0.4-0.1-0.5-5.3-1.1-0.8-0.9-1.4-1.5-1.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.0-1.1-0.0-0.1-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.1-0.0-0.0-0.0-0.0-0.1-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Net
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-30
Value1.8530.9950.1830.18-5.076-0.378-0.1440.3330.2180.079-0.0840.18-0.017
Percentage of NetIncomeLoss1.71.60.50.4-18.2-1.2-0.51.10.80.5-0.30.9-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.10.00.0-1.0-0.1-0.00.10.00.0-0.00.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-31
Value10863364227322829271526203324
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.77.75.46.95.65.45.24.84.22.64.83.15.03.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value110653743283329302817272033245.96922273016262828141833221824352415399126161518321310224017181634
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.08.05.57.15.75.65.55.04.32.85.03.25.13.81.14.14.55.33.65.15.25.43.03.46.14.23.44.05.44.33.17.615.84.73.33.03.15.72.71.83.55.93.43.73.07.2

us-gaap:ProfitLoss us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees


Profit
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-29
Value-2.038-3.29919-10.916-17.282-12.685-0.382-3.952-10.512
Percentage of ProfitLoss-1.8-5.153.7-24.8-60.7-37.4-1.3-13.0-36.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.2-0.43.0-1.8-3.5-2.1-0.1-0.6-1.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees-2.0-3.419.9-14.8-16.7-11.9-0.3-3.0-8.8

us-gaap:ProfitLoss us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

mli:MuellerMiddleEast


Profit
Period End2020-09-262019-09-282019-06-29
Value0.0-0.5-0.6
Percentage of ProfitLoss0.0-1.6-2.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.1-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mli:MuellerMiddleEast0.00.00.0

mli:TecumsehProductsHoldingsLLC


Profit
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-29
Value-1.0-1.610.0-5.5-8.6-6.3-0.2-1.9-5.3
Percentage of ProfitLoss-0.9-2.526.8-12.5-30.2-18.6-0.7-6.2-18.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.1-0.21.5-0.9-1.7-1.0-0.0-0.3-0.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mli:TecumsehProductsHoldingsLLC0.00.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value2708000.02109000.02238000.02134000.02213000.01985000.02389000.02053000.02295000.02007000.02082000.02047000.01994000.01912000.01895000.01863000.01956000.01736000.01834000.01679000.01638000.01236000.01633000.01645000.01617000.01349000.01308000.01431000.02332000.01194000.01144000.01234000.02380000.0946000.03094000.0981000.01163000.0898000.0899000.0871000.0948000.0764000.0692000.0750000.0731000.0704000.0
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value-0.118-21.526-14.627-73.366-5.128-32.501-13.145-7.594-4.888-14.83-20.818-153.6965.302-17.884-25.4143.303-5.602-5.709-8.835-9.549-32.732-61.9865228-21.633-10.692-19.294-11.80325-3.319-4.034-7.812-11.539-5.133-5.304-7.30515
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-2.6-2.2-11.9-1.0-5.4-2.4-1.2-0.7-2.4-3.7-23.80.8-2.8-4.90.6-0.9-1.0-1.5-1.5-5.7-12.79.94.8-3.9-2.1-3.8-2.04.4-0.7-0.7-1.2-1.7-1.0-1.0-1.43.2

Payments To Acquire Productive Assets

us-gaap:PaymentsToAcquireProductiveAssets

us-gaap:PaymentsToAcquireProductiveAssets


Payments
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value8.7519.227146.9895.12117117.1286.26.834215.8035.3655.517285.3894.5637.345215.3844.3565.8926.3326.5338.5777.392109.5739.6349.1997.94711119.8351220149.345.6234.3853.6935.054.4684.9244.8074.479
Percentage of PaymentsToAcquireProductiveAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value-55.25564-26.0126.271-157.0384-61.955-50.29-87.90160-54.96-107.9251241055-106.998-4.773-188.391-27.88224-1.1-7.667-14.365-13.987228.319-245.114-168.794-3.059-15.6121.22611-3.9823.536-21.3111-0.408
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-5.57.9-3.81.0-31.414.0-11.4-8.3-13.29.9-9.8-16.718.81.610.6-19.4-0.8-32.6-4.63.7-0.2-1.6-2.7-2.44.01.7-47.7-28.4-0.5-3.20.21.7-0.60.7-4.22.2-0.1

Proceeds From Issuance Of Long Term Debt

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:ProceedsFromIssuanceOfLongTermDebt


Proceeds
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-31
Value32510040400.0151100.00.020.081100100.88415141
Percentage of ProceedsFromIssuanceOfLongTermDebt100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt


Repayments
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-25
Value3653560201452055408030321022115101000.3050.3060.3050.2690.250.250.250.250.250.250.250.30.250.250.250.250.250.250.250.251480.25-1.1521.6520.250.00.00.0
Percentage of RepaymentsOfLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

Payments Of Dividends

us-gaap:PaymentsOfDividends

us-gaap:PaymentsOfDividends


Payments
Period End2020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value5.586110.05.5875.5875.5775.5745.6545.6915.6815.6795.7035.7025.6911795.6695.6685.6514.2364.2344.2344.2194.2164.2134.2124.1984.1963.4923.4893.4813.4793.4763.813.8033.8023.8013.7993.7743.7723.7743.7713.773.759
Percentage of PaymentsOfDividends100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Dividends

us-gaap:Dividends us-gaap:StatementEquityComponents

us-gaap:Dividends

us-gaap:RetainedEarnings


Dividendsus-gaap:
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-31
Value7.437.3915.7095.7115.7745.6755.6375.6775.6635.6625.7475.7585.7485.756
Percentage of Dividends100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012015-09-262014-12-272014-09-272013-12-282013-09-282012-12-292011-12-312011-10-012010-12-252010-09-25
Value0.00.00.05.5740.00.00.01.763260.00.06.5750.00.00.00.00.0-0.0580.00.00.0-0.002-8.2117.4680.3330.01
Percentage of PaymentsForRepurchaseOfCommonStock0.00.00.0100.00.00.00.0100.0100.00.00.0100.00.00.00.00.00.0100.00.00.00.0100.0100.0100.0100.0100.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


Effective
Period End2021-06-262021-03-272020-09-262020-06-272020-03-282019-09-282019-06-292019-03-302018-09-292018-06-302018-03-312017-09-302017-07-012017-04-012016-10-012016-07-022016-04-022015-09-262015-06-272015-03-282014-09-272014-06-282014-03-292013-09-282013-06-292013-03-302012-09-292012-06-302012-03-312011-10-012011-07-022011-04-022010-09-252010-06-26
Value26.025.024.00.260.260.190.230.230.120.270.180.270.310.270.30.320.350.20.370.340.330.250.330.40.360.340.360.330.260.330.330.330.330.32
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

us-gaap:EmployeeStockOption


Share
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-26
Value793000.0939000.01014000.0947000.01034000.01198000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber100.0100.0100.0100.0100.0100.0

Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-26
Value26.8125.0523.922.3121.2420.59
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-25
Value4.1245.6023.1955.7086.137455867505458
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-25
Value5149414250575748676964
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-25
Value2723253018171722302928
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mli:AssetAcquisitionConsiderationTransferred mli:AssetAcquisition

mli:AssetAcquisitionConsiderationTransferred

mli:WielandKesslerLLCAssetAcquisition


Asset
Period End2020-08-03
Value57
Percentage of AssetAcquisitionConsiderationTransferred100.0

mli:AssetAcquisitionConsiderationTransferred mli:AssetAcquisition, us-gaap:SubsequentEventType

mli:AssetPurchaseAgreementWithHartCooleyLLC, us-gaap:SubsequentEvent


Asset
Period End2021-01-29
Value14
Percentage of AssetAcquisitionConsiderationTransferred0.0

mli:GainLossOnFairValueOfFutureContracts us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:Position

mli:GainLossOnFairValueOfFutureContracts

us-gaap:CommodityContract, us-gaap:CashFlowHedging, us-gaap:Long


Gain
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-26
Value-4700000.01900000.0500000.0-500000.013700000.0-12500000.02205000.0-822000.0-1283000.01300000.0-461000.0-200000.0-522000.0-117000.01165000.0-419000.076000.0178000.0-800000.0-100000.01679000.021000.0300000.0
Percentage of GainLossOnFairValueOfFutureContracts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommodityContract, us-gaap:FairValueHedging, us-gaap:Short


Gain
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-26
Value12000000.0-14600000.0-5835000.0123000.0-127000.039000.0-98000.0-34000.0122000.0-90000.0132000.0-40000.0-48000.056000.0-2474000.0-269000.0-750000.0293000.0-171000.0369000.0-191000.0-307000.0-538000.0
Percentage of GainLossOnFairValueOfFutureContracts-255.3-768.4-1167.0-24.6-0.9-0.3-4.44.1-9.5-6.9-28.620.09.2-47.9-212.464.2-986.8164.621.4-369.0-11.4-1461.9-179.3

mli:NumberOfSurroundingProperties us-gaap:EnvironmentalRemediationSite, us-gaap:PropertyPlantAndEquipmentByType

mli:NumberOfSurroundingProperties

mli:LeadRefinerySite, mli:NonOperatingProperties


Number
Period End2021-06-262021-03-27
Value0300.0
Percentage of NumberOfSurroundingProperties0.0100.0

mli:OtherComprehensiveIncomeLossAttributableToUnconsolidatedAffiliatesNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

mli:OtherComprehensiveIncomeLossAttributableToUnconsolidatedAffiliatesNetOfTaxIncludingPortionAttributableToNoncontrollingInterest


Other
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-27
Value-753000.01987000.0432000.0339000.0-2790000.01887000.0-1667000.0547000.0234000.047000.0-1499000.0-6907000.0121000.0-401000.01981000.0-735000.01247000.0-1598000.0-575000.05112000.01438000.00000
Percentage of OtherComprehensiveIncomeLossAttributableToUnconsolidatedAffiliatesNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

mli:OtherComprehensiveIncomeLossAttributableToUnconsolidatedAffiliatesTax

mli:OtherComprehensiveIncomeLossAttributableToUnconsolidatedAffiliatesTax


Other
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-02
Value-219000.0577000.0125000.099000.0-810000.0548000.0-484000.0159000.068000.013000.0-436000.0-2005000.035000.0-116000.01119000.0-415000.0704000.0-903000.0325000.0-2888000.0-812000.0
Percentage of OtherComprehensiveIncomeLossAttributableToUnconsolidatedAffiliatesTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mli:PaymentsForIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions

mli:PaymentsForIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions


Payments
Period End2020-12-262019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-26
Value70000.0156000.0942000.0-48000.0175000.00829000.0-53000.0-50000.0-49000.0859000.0-85000.0870000.0-50000.01682000.035000.0-361000.042000.0
Percentage of PaymentsForIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mli:SiteContingencyPropertiesLossExposureNotAccruedBestEstimate us-gaap:EnvironmentalRemediationSite, us-gaap:PropertyPlantAndEquipmentByType

mli:SiteContingencyPropertiesLossExposureNotAccruedBestEstimate

mli:LeadRefinerySite, mli:NonOperatingProperties


Site
Period End2021-06-262021-03-27
Value0.026
Percentage of SiteContingencyPropertiesLossExposureNotAccruedBestEstimate0.0100.0

us-gaap:AssetImpairmentCharges

us-gaap:AssetImpairmentCharges


Asset
Period End2020-12-262020-09-262020-06-272020-03-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012015-12-262015-09-262014-12-272014-09-272013-12-282013-09-282012-12-292012-09-29
Value0.7360.00.03.0350.00.00.00.0-3.4693.4691.10.00.4110.03.83.0-0.570.00.00.00.04.3040.00.0
Percentage of AssetImpairmentCharges100.00.00.0100.00.00.00.00.0100.0100.0100.00.0100.00.0100.0100.0100.00.00.00.00.0100.00.00.0

us-gaap:AssetImpairmentCharges us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, mli:PipingSystems


Asset
Period End2020-12-262020-09-262020-06-272020-03-282018-03-312017-12-302016-12-312016-10-01
Value0.7360.00.03.0350.01.0893.1153.0
Percentage of AssetImpairmentCharges100.00.00.0100.00.099.082.0100.0

us-gaap:BusinessCombinationConsiderationTransferred1 mli:AssetAcquisition

us-gaap:BusinessCombinationConsiderationTransferred1

mli:WielandKesslerLLCAssetAcquisition


Business
Period End2020-08-03
Value57
Percentage of BusinessCombinationConsiderationTransferred1100.0

us-gaap:BusinessCombinationConsiderationTransferred1 us-gaap:BusinessAcquisition

mli:HartCooleyFlexibleDuctBusiness


Business
Period End2021-01-29
Value14
Percentage of BusinessCombinationConsiderationTransferred10.0

mli:WielandKesslerLLC


Business
Period End2020-08-03
Value57
Percentage of BusinessCombinationConsiderationTransferred199.9

us-gaap:BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1 us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1

mli:HartCooleyFlexibleDuctBusiness


Business
Period End2021-06-26
Value1400000.0
Percentage of BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1100.0

us-gaap:BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentIntangibles us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentIntangibles

mli:WielandKesslerLLC


Business
Period End2021-03-27
Value1500000.0
Percentage of BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentIntangibles100.0

us-gaap:BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentPropertyPlantAndEquipment us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentPropertyPlantAndEquipment

mli:HartCooleyFlexibleDuctBusiness


Business
Period End2021-06-26
Value2400000.0
Percentage of BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentPropertyPlantAndEquipment100.0

mli:WielandKesslerLLC


Business
Period End2021-06-26
Value-1400000.0
Percentage of BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentPropertyPlantAndEquipment-58.3

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-01
Value33000.031000.043000.050000.047000.053000.057000.010000.013000.08000.0-49000.0-14000.0-11000.0-18000.012000.010000.015000.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-01
Value-379000.0-378000.0-823000.0-494000.0-528000.0-460000.0-495000.0-485000.0-440000.0-530000.0-274000.0-293000.0-235000.0-349000.0-598000.0-536000.0-516000.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses-1148.5-1219.4-1914.0-988.0-1123.4-867.9-868.4-4850.0-3384.6-6625.0559.22092.92136.41938.9-4983.3-5360.0-3440.0

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-01
Value-117000.0-118000.0-118000.0-117000.0-58000.0-226000.0-225000.0-226000.0-225000.0-226000.0-225000.0-226000.0-225000.0-226000.0-225000.0-225000.0-226000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-01
Value0.9040.9041.2181.4961.4951.4951.8732.0772.0772.0762.6532.292.292.2892.8222.1842.186
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanInterestCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-01
Value87000.087000.0109000.0106000.0106000.0109000.0150000.0153000.0153000.0153000.06000.0147000.0146000.0148000.0157000.0147000.0146000.0
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-01
Value313000.0313000.0674000.0862000.0866000.0858000.01607000.01455000.01443000.01467000.01309000.01478000.01465000.01493000.01367000.01659000.01653000.0
Percentage of DefinedBenefitPlanInterestCost359.8359.8618.3813.2817.0787.21071.3951.0943.1958.821816.71005.41003.41008.8870.71128.61132.2

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-01
Value0.0020.003-0.016-0.002-2.534-0.109-0.065-0.019-0.022-0.017-0.072-0.006-0.0120.00.009-0.034-0.042
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-01
Value-0.212-0.21311-0.14-0.101-0.1770.229-0.137-0.194-0.079-1.048-0.497-0.57-0.423-0.8350.0460.019
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost-10600.0-7100.0-74506.27000.04.0162.4-352.3721.1881.8464.71455.68283.34750.00.0-9277.8-135.3-45.2

us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-262020-09-262020-06-272019-06-29
Value002591000.00
Percentage of DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments0.00.0100.00.0

us-gaap:DefinedBenefitPlanServiceCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanServiceCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-01
Value65000.065000.036000.059000.056000.061000.069000.064000.063000.064000.060000.059000.056000.060000.072000.054000.053000.0
Percentage of DefinedBenefitPlanServiceCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Depreciation

us-gaap:Depreciation


Depreciation
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-07-022011-04-02
Value11115.5881011115.2421010105.78109.0869.5365.3618.3468.6748.4193.569.1059.1519.0115.4248.8398.2788.0154.3179.0488.6758.1656.3637.9348.3998.256.6137.878.2227.6219.239.769
Percentage of Depreciation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet

us-gaap:CommodityContract, us-gaap:Nondesignated, us-gaap:CostOfSales


Derivative
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-28
Value-1893000.0-8530000.0-5297000.0843000.05037000.0-9500000.01018000.0-467000.0450000.01442000.0-1352000.0-2848000.02301000.06126000.0-2572000.0-3083000.0672000.0-1095000.01392000.0855000.01326000.0494000.01052000.01143000.01046000.0234000.0
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Effect
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-30
Value203000.0784000.05441000.02866000.0-25000.0-6135000.02022000.0-1629000.0-801000.0919000.0-1510000.0-74000.0-1657000.01289000.0-1521000.0
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EnvironmentalExitCostsReasonablyPossibleAdditionalLoss us-gaap:Range, us-gaap:EnvironmentalRemediationSite, us-gaap:PropertyPlantAndEquipmentByType

us-gaap:EnvironmentalExitCostsReasonablyPossibleAdditionalLoss

srt:Maximum, mli:LeadRefinerySite, mli:NonOperatingProperties


Environmental
Period End2021-06-262021-03-272020-09-262020-06-272020-03-28
Value0.02.40.00.02.3
Percentage of EnvironmentalExitCostsReasonablyPossibleAdditionalLoss0.0100.00.00.0100.0

srt:Maximum, mli:MuellerCopperTubeProductsInc, mli:OperatingProperties


Environmental
Period End2021-06-262021-03-272020-09-262020-06-272020-03-28
Value0.01.10.00.00.9
Percentage of EnvironmentalExitCostsReasonablyPossibleAdditionalLoss0.045.80.00.039.1

srt:Maximum, mli:ShastaAreaMineSites, mli:NonOperatingProperties


Environmental
Period End2021-06-262021-03-272020-09-262020-06-272020-03-28
Value0.0180.00.017
Percentage of EnvironmentalExitCostsReasonablyPossibleAdditionalLoss0.0750.00.00.0769.6

srt:Minimum, mli:LeadRefinerySite, mli:NonOperatingProperties


Environmental
Period End2021-06-262021-03-272020-09-262020-06-272020-03-28
Value0.01.70.00.01.8
Percentage of EnvironmentalExitCostsReasonablyPossibleAdditionalLoss0.070.80.00.078.3

srt:Minimum, mli:MuellerCopperTubeProductsInc, mli:OperatingProperties


Environmental
Period End2021-06-262021-03-272020-09-262020-06-272020-03-28
Value0.00.90.00.00.6
Percentage of EnvironmentalExitCostsReasonablyPossibleAdditionalLoss0.037.50.00.026.1

srt:Minimum, mli:ShastaAreaMineSites, mli:NonOperatingProperties


Environmental
Period End2021-06-262021-03-272020-09-262020-06-272020-03-28
Value0.0130.00.012
Percentage of EnvironmentalExitCostsReasonablyPossibleAdditionalLoss0.0579.20.00.0552.2

us-gaap:GainLossOnSaleOfPropertyPlantEquipment

us-gaap:GainLossOnSaleOfPropertyPlantEquipment


Gain
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value-0.1170.9360.012-0.1530.041-0.0320.939-0.0130.074-0.0370.0062.893-3.3220.6760.5980.107-0.0970.016-0.0960.1920.5320.023-0.06-0.51715-0.0014.259-0.079-0.1881.413-0.7810.332-0.0193.003-1.236-0.069-0.08-0.0260.3010.176-0.007-0.2680.5040.0880.17-0.006
Percentage of GainLossOnSaleOfPropertyPlantEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossRelatedToLitigationSettlement

us-gaap:GainLossRelatedToLitigationSettlement


Gain
Period End2020-12-262020-09-262020-06-272020-03-282019-06-292019-03-30
Value0.120.00.0210.00.0
Percentage of GainLossRelatedToLitigationSettlement100.00.00.0100.00.00.0

us-gaap:GainLossRelatedToLitigationSettlement us-gaap:ConsolidationItems

mli:CorporateAndEliminations


Gain
Period End2020-09-262020-06-272020-03-28
Value0.00.021
Percentage of GainLossRelatedToLitigationSettlement0.00.0100.0

us-gaap:GoodwillPurchaseAccountingAdjustments us-gaap:BusinessAcquisition

us-gaap:GoodwillPurchaseAccountingAdjustments

mli:HartCooleyFlexibleDuctBusiness


Goodwill
Period End2021-06-26
Value1000000.0
Percentage of GoodwillPurchaseAccountingAdjustments100.0

mli:WielandKesslerLLC


Goodwill
Period End2021-06-262021-03-27
Value1400000.0-1500000.0
Percentage of GoodwillPurchaseAccountingAdjustments140.00.0

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromEquityMethodInvestments


Income
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-27
Value-1019000.0-1649000.09994000.0-5457000.0-8641000.0-6115000.0-854000.0-2528000.0-5843000.0-15369000.0923000.0-3100000.0-148000.0-10320000.0-331000.0-394000.0-109000.0-1243000.0-1188000.01122000.0-995000.02922000.02191000.0-2191000.00000
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:IncomeTaxReconciliationForeignIncomeTaxRateDifferential

us-gaap:IncomeTaxReconciliationForeignIncomeTaxRateDifferential


Income
Period End2021-06-262020-12-262020-09-262018-12-292017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-06-272015-03-282014-12-272014-09-272013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-31
Value1800000.01083000.0200000.01559000.0-10626000.01600000.01600000.01400000.0-7592000.01000000.01400000.01100000.0-100000.0500000.0-594000.0-800000.0-2126000.0400000.01100000.0-300000.0-6337000.0-200000.01200000.0-2600000.0
Percentage of IncomeTaxReconciliationForeignIncomeTaxRateDifferential100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeTaxReconciliationOtherAdjustments

us-gaap:IncomeTaxReconciliationOtherAdjustments


Income
Period End2021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-03-302018-12-292018-09-292018-06-302018-03-312017-07-012016-07-022015-06-272012-12-292012-09-292011-07-02
Value700000.02446000.0400000.01300000.0600000.0-2789000.0800000.0700000.01142000.0500000.01300000.01200000.0200000.0500000.0600000.0839000.0600000.0900000.0
Percentage of IncomeTaxReconciliationOtherAdjustments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeTaxReconciliationStateAndLocalIncomeTaxes

us-gaap:IncomeTaxReconciliationStateAndLocalIncomeTaxes


Income
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-07-02
Value5300000.02400000.01149000.01400000.01200000.02200000.0-66000.01000000.01200000.01100000.0195000.0700000.01400000.01200000.0-565000.00800000.0900000.0-318000.0600000.0800000.0800000.0573000.0-100000.01400000.0800000.0555000.0300000.01200000.01300000.0-995000.01200000.05100000.01100000.0478000.0400000.01100000.01300000.01100000.0
Percentage of IncomeTaxReconciliationStateAndLocalIncomeTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherCurrentLiabilities

us-gaap:IncreaseDecreaseInOtherCurrentLiabilities


Increase
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-30
Value1633482610-10.821-8.763116.15-15.885
Percentage of IncreaseDecreaseInOtherCurrentLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities


Increase
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-30
Value7132000.0-3703000.04671000.0-444000.0-3726000.0-1643000.0-832000.0-5627000.0-2226000.0741000.0
Percentage of IncreaseDecreaseInOtherNoncurrentLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingAssets


Increase
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value6.712-1.23-11.556-5.0864.043-8.018.1542.868-2.9137.53-3.1031.1558.562-20.9671.953-1.3515.928-1.2058.622.581-17.3790.37-8.1472.6612.294-9.2578.386.386-5.581144.324-5.1922.891-2.5856.5517.0630.0771.2948.803-4.865-7.0382.64-3.184-0.8210.0416.938
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LossContingencyLossInPeriod us-gaap:EnvironmentalRemediationSite

us-gaap:LossContingencyLossInPeriod

mli:LeadRefineryNPLSite


Loss
Period End2021-06-262021-03-272019-12-282019-09-282019-06-292019-03-30
Value100000.07500000.0-6600000.001300000.05700000.0
Percentage of LossContingencyLossInPeriod100.0100.0100.00.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax

mli:AccumulatedOtherComprehensiveIncomeAttributabletoUnconsolidatedAffiliates


Other
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-10-01
Value-0.7531.9870.4320.339-2.791.887-1.6670.5470.2340.047-1.499-6.9070.121-0.4011.981-0.7351.247-1.5985.112
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-28
Value-0.117-0.283-2.171-0.434-1.6210.5871.7280.570.506-0.489-4.1930.1980.923-0.572.703-0.453-0.634-0.2221.7040.3481.150.764.2560.739-1.1240.895-23.6180.531-0.281-0.10724-0.814
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax15.5-14.2-502.5-128.058.131.1-103.7104.2216.2-1040.4279.7-2.9762.8142.1136.461.6-50.813.90.06.80.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Other
Period End2021-06-262021-03-272020-09-262020-06-272020-03-282019-09-282019-06-292019-03-302018-09-29
Value-1.4841.4880.331-1.678-3.7350.138-0.7111.3360.311
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax197.174.997.660.1-197.925.2-303.82842.6-4.5

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-10-01
Value1.9287.158188.604-5.047-21.92510-4.943-1.8256.747-17.004-4.748-10.5313.0592.845.4454.8814.312-0.196
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax-256.0360.24368.82538.1180.9-1161.9-643.8-903.7-779.914355.31134.468.7-8703.3-762.8143.4-740.8391.4-269.8-3.8

us-gaap:AccumulatedTranslationAdjustment


Other
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-28
Value4.2823.966208.3681.042-20.66410-6.198-1.8545.853-10.9511.65-11.5934.8-2.637.1514.4976.561-10.554-4.699-9.602-0.337-5.598-11.1526.75-7.697-9.276-7.0482.5491.1622.3596.681
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax-568.7199.64655.82468.4-37.3-1095.1-615.4-1133.1-792.312453.2730.6-23.9-9581.0-1197.0-132.8-972.9360.6-410.60.0-91.90.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax


Other
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-30
Value961000.0-147000.0199000.0-43000.0-970000.0960000.0229000.056000.0253000.0-343000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax

us-gaap:OtherContract, us-gaap:CashFlowHedging


Other
Period End2021-06-262021-03-272020-09-262020-06-272020-03-282019-09-282019-06-292019-03-30
Value2000.0-1000.001000.00-1000.000
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax100.0100.00.0100.00.0100.00.00.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:IncomeStatementLocation

us-gaap:CommodityContract, us-gaap:CashFlowHedging, us-gaap:CostOfSales


Other
Period End2021-06-262021-03-272020-09-262020-06-272020-03-282019-09-282019-06-292019-03-30
Value1853000.0996000.0-180000.05075000.0378000.0-332000.0-218000.0-79000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax92650.0-99600.00.0507500.00.033200.00.00.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:CashFlowHedging


Other
Period End2021-06-262021-03-272020-09-262020-06-272020-03-282019-09-282019-06-292019-03-30
Value1853000.0995000.0-180000.05076000.0378000.0-333000.0-218000.0-79000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax92650.0-99500.00.0507600.00.033300.00.00.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax


Other
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-27
Value-0.0740.091-5.3670.171.284-0.739-1.905-0.777-0.6760.2464.108-0.27-0.950.451-3.0080.2070.405-0.04-1.938-0.743-1.53-1.172-4.735-1.2310.647
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax


Other
Period End2021-06-262021-03-272020-09-262020-06-272020-03-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-27
Value0.0010.0560.0920.375-0.243-0.232-0.1980.1070.891-0.079-0.3220.18-1.3560.1020.1720.011-3.7810.2550.522-0.398-3.9360.429-0.216
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentForContingentConsiderationLiabilityOperatingActivities us-gaap:BusinessAcquisition

us-gaap:PaymentForContingentConsiderationLiabilityOperatingActivities

mli:HartCooleyFlexibleDuctBusiness


Payment
Period End2021-01-29
Value1400000.0
Percentage of PaymentForContingentConsiderationLiabilityOperatingActivities100.0

us-gaap:PaymentsToAcquireBusinessesGross us-gaap:BusinessAcquisition

us-gaap:PaymentsToAcquireBusinessesGross

mli:HartCooleyFlexibleDuctBusiness


Payments
Period End2021-01-29
Value14
Percentage of PaymentsToAcquireBusinessesGross100.0

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired


Payments
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value-0.094140.0570.008150.00.0-3.4650.00.01550.001120.0-0.023180.00.00.0-1.46171350.00.00.00.030550.00.00.00.058110.00.00.00.00.06.8820.02.0210.00.0
Percentage of PaymentsToAcquireBusinessesNetOfCashAcquired100.0100.00.0100.0100.0100.00.00.0100.00.00.0100.0100.0100.00.0100.0100.00.00.00.0100.0100.0100.00.00.00.00.0100.0100.00.00.00.0100.0100.00.00.00.00.00.0100.00.0100.00.00.0

us-gaap:PaymentsToAcquireInterestInJointVenture us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:PaymentsToAcquireInterestInJointVenture

mli:MuellerMiddleEast


Payments
Period End2021-06-26
Value0.0
Percentage of PaymentsToAcquireInterestInJointVenture0.0

us-gaap:PaymentsToAcquireNotesReceivable

us-gaap:PaymentsToAcquireNotesReceivable


Payments
Period End2020-12-26
Value115000.0
Percentage of PaymentsToAcquireNotesReceivable100.0

us-gaap:ProceedsFromIssuanceOfDebt

us-gaap:ProceedsFromIssuanceOfDebt


Proceeds
Period End2021-03-272020-03-28
Value45000.0189000.0
Percentage of ProceedsFromIssuanceOfDebt100.0100.0

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions


Proceeds
Period End2021-06-262021-03-272020-06-272020-03-282016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value0.1930.2210.2320.464-0.0350.361-0.042-0.8430.0320.0930.11-1.183-0.9270.1140.073-8.005101.3280.0070.383-0.0021.7450.72
Percentage of ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment


Proceeds
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252010-09-252010-06-262010-03-27
Value0.01.730.1690.0110.0010.02.8550.0340.3470.0040.017.317100.70819101.1710.1925.0033.8191.4810.0010.0170.0035.0260.492280.0465.04.8330.181610.0143.0020.0150.3270.0880.0870.2391.5940.0190.1320.0450.0030.0150.008
Percentage of ProceedsFromSaleOfPropertyPlantAndEquipment0.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForDoubtfulAccounts

us-gaap:ProvisionForDoubtfulAccounts


Provision
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-30
Value-351000.01631000.0255000.0-897000.0750000.01100000.0-14000.034000.0-62000.0-38000.0
Percentage of ProvisionForDoubtfulAccounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Reclassification
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-28
Value-191000.0-192000.0-7538000.0-264000.0-337000.0-152000.0-177000.0-207000.0-170000.0-243000.0-85000.0-72000.0-27000.0-119000.0-305000.0-246000.0-229000.0-262000.0-234000.0-395000.0-380000.0-412000.03459000.0-492000.0-477000.0-521000.0816000.0-115000.0-122000.0-110000.04414000.0-628000.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Reclassification
Period End2021-06-262021-03-272020-09-262020-06-272020-03-282019-09-282019-06-292019-03-302018-09-29
Value1853000.0995000.0180000.0-5076000.0-378000.0333000.0218000.079000.0180000.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax-970.2-518.2-68.21506.2248.7-160.9-128.2-32.5-250.0

us-gaap:AccumulatedOtherComprehensiveIncome


Reclassification
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-10-01
Value1662000.0803000.0-7355000.0-84000.0-5413000.0-530000.0-321000.0126000.048000.0-164000.0-169000.0108000.0-44000.0173000.0-481000.0-632000.03294000.0-603000.0-1267000.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax-870.2-418.297.631.81606.2348.7181.4-60.9-28.267.5198.8-150.0163.0-145.4157.7256.9-1438.4230.2320.8

us-gaap:RedemptionPremium us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:RedemptionPremium

us-gaap:SubordinatedDebt, us-gaap:SubsequentEvent


Redemption
Period End2021-04-15
Value5700000.0
Percentage of RedemptionPremium100.0

us-gaap:RepaymentsOfSubordinatedDebt us-gaap:LongtermDebtType

us-gaap:RepaymentsOfSubordinatedDebt

us-gaap:SubordinatedDebt


Repayments
Period End2021-04-15
Value291
Percentage of RepaymentsOfSubordinatedDebt100.0

us-gaap:RepaymentsOfSubordinatedDebt us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:SubordinatedDebt, us-gaap:SubsequentEvent


Repayments
Period End2021-04-15
Value291
Percentage of RepaymentsOfSubordinatedDebt100.0

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardGross us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardGross

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-262020-12-262020-09-262020-06-272019-12-282019-09-282019-06-29
Value-285000.0-1000.0-6098000.0-284000.042000.0-6140000.0-242000.0
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardGross100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStock


Stock
Period End2021-06-262020-12-262020-09-262020-06-272019-12-282019-09-282019-06-29
Value285000.01000.06098000.0284000.0-42000.06059000.0323000.0
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardGross-100.0-100.0-100.0-100.0-100.0-98.7-133.5

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-31
Value0.0120.5530.151-0.229-0.27-0.397-0.02-0.341-0.227-0.0560.001-0.02-0.211-0.048
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStock


Stock
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-31
Value0.182-0.306-0.204-0.6440.5030.862.353-0.6010.274-0.1180.00.5650.4570.114
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised1516.7-55.3-135.1281.2-186.3-216.6-11765.0176.2-120.7210.70.0-2825.0-216.6-237.5

us-gaap:StockRepurchasedDuringPeriodValue us-gaap:StatementEquityComponents

us-gaap:StockRepurchasedDuringPeriodValue

us-gaap:TreasuryStock


Stock
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-31
Value0.00.0260.00.00.05.5742.4880.00.01.763261.3250.2416.592
Percentage of StockRepurchasedDuringPeriodValue0.0100.00.00.00.0100.0100.00.00.0100.0100.0100.0100.0100.0

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment


Weighted
Period End2021-06-262021-03-272020-09-262020-06-272020-03-282019-09-282019-06-292019-03-302018-09-292018-06-302018-03-312017-09-302017-07-012017-04-012016-10-012016-07-022016-04-022015-09-262015-06-272015-03-282014-09-272014-06-282014-03-292013-09-282013-06-292013-03-302012-09-292012-06-302012-03-312011-10-012011-07-022011-04-022010-09-252010-06-262010-03-27
Value866000.0756000.0550000.0471000.0583000.0482000.0561000.0526000.0540000.0514000.0517000.0456000.0511000.0658000.0586000.0418000.0495000.0598000.0743000.0731000.0637000.0747000.0853000.0361000.0370000.0374000.0452000.0436000.0444000.0483000.0356.0263000.092000.043.094000.0
Percentage of WeightedAverageNumberDilutedSharesOutstandingAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mli:AccruedDiscountsAndAllowancesLiabilityCurrent

mli:AccruedDiscountsAndAllowancesLiabilityCurrent


Accrued
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-25
Value5653483940464543414035
Percentage of AccruedDiscountsAndAllowancesLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mli:AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromDerivativeInstrumentsEffectNetOfTax us-gaap:DerivativeInstrumentRisk

mli:AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromDerivativeInstrumentsEffectNetOfTax

us-gaap:CommodityContract


Accumulated
Period End2021-06-262021-03-272020-12-262020-09-262017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-28
Value-1900000.01300000.0800000.0500000.0-133000.0169000.092000.0300000.0350000.0979000.0-105000.0-1000000.0-1300000.0-919000.0317000.0-538000.0-55000.0303000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromDerivativeInstrumentsEffectNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mli:ApproximatePercentageOfMutualFundsActivelyManaged

mli:ApproximatePercentageOfMutualFundsActivelyManaged


Approximate
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-31
Value76.00.80.610.660.680.670.40.320.320.3
Percentage of ApproximatePercentageOfMutualFundsActivelyManaged100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mli:ApproximatePercentageOfMutualFundsIndexedFunds

mli:ApproximatePercentageOfMutualFundsIndexedFunds


Approximate
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-31
Value24.00.20.390.340.320.330.60.680.680.7
Percentage of ApproximatePercentageOfMutualFundsIndexedFunds100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mli:AssetAcquisitionGoodwillAndIntangibleAssets mli:AssetAcquisition

mli:AssetAcquisitionGoodwillAndIntangibleAssets

mli:WielandKesslerLLCAssetAcquisition


Asset
Period End2020-08-03
Value31
Percentage of AssetAcquisitionGoodwillAndIntangibleAssets100.0

mli:AssetAcquisitionTangibleAssets mli:AssetAcquisition

mli:AssetAcquisitionTangibleAssets

mli:WielandKesslerLLCAssetAcquisition


Asset
Period End2020-08-03
Value26
Percentage of AssetAcquisitionTangibleAssets100.0

mli:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAsset mli:AssetAcquisition

mli:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAsset

mli:WielandKesslerLLCAssetAcquisition


Business
Period End2020-08-03
Value10
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAsset100.0

mli:DeferredTaxAssetTaxCreditFederalAndForeign

mli:DeferredTaxAssetTaxCreditFederalAndForeign


Deferred
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-25
Value6.255.9096.252115.8137.4036.4515.9139.8297.4216.651
Percentage of DeferredTaxAssetTaxCreditFederalAndForeign100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mli:DeferredTaxAssetTaxCreditStateAndLocal

mli:DeferredTaxAssetTaxCreditStateAndLocal


Deferred
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-25
Value2122272922212224293032
Percentage of DeferredTaxAssetTaxCreditStateAndLocal100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mli:DeferredTaxAssetsOperatingLeaseLiability

mli:DeferredTaxAssetsOperatingLeaseLiability


Deferred
Period End2020-12-262019-12-28
Value6034000.05965000.0
Percentage of DeferredTaxAssetsOperatingLeaseLiability100.0100.0

mli:DeferredTaxAssetsTaxDeferredExpenseBasisDifferenceInUnconsolidatedAffiliates

mli:DeferredTaxAssetsTaxDeferredExpenseBasisDifferenceInUnconsolidatedAffiliates


Deferred
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-26
Value8478000.06547000.01067000.00211000.00
Percentage of DeferredTaxAssetsTaxDeferredExpenseBasisDifferenceInUnconsolidatedAffiliates100.0100.0100.00.0100.00.0

mli:DeferredTaxLiabilitiesOperatingLeaseRightofUseAsset

mli:DeferredTaxLiabilitiesOperatingLeaseRightofUseAsset


Deferred
Period End2020-12-262019-12-28
Value6157000.05967000.0
Percentage of DeferredTaxLiabilitiesOperatingLeaseRightofUseAsset100.0100.0

mli:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfInflation us-gaap:RetirementPlanType

mli:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfInflation

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-292017-12-30
Value3.20.0320.0340.033
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfInflation100.0100.0100.0100.0

mli:DefinedBenefitPlanExpectedFutureBenefitPaymentsTotal us-gaap:RetirementPlanType

mli:DefinedBenefitPlanExpectedFutureBenefitPaymentsTotal

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-29
Value9.5569.98511
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsTotal100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-29
Value34136101
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsTotal356.51369.0875.8

mli:FederalAndForeignTaxAttributesWithPotentialTaxBenefits

mli:FederalAndForeignTaxAttributesWithPotentialTaxBenefits


Federal
Period End2020-12-26
Value1600000.0
Percentage of FederalAndForeignTaxAttributesWithPotentialTaxBenefits100.0

mli:FederalAndForeignTaxAttributesWithPotentialTaxBenefitsUnlimitedLife

mli:FederalAndForeignTaxAttributesWithPotentialTaxBenefitsUnlimitedLife


Federal
Period End2020-12-26
Value4600000.0
Percentage of FederalAndForeignTaxAttributesWithPotentialTaxBenefitsUnlimitedLife100.0

mli:FederalAndForeignTaxAttributesWithPotentialTaxBenefitsValuationAllowance

mli:FederalAndForeignTaxAttributesWithPotentialTaxBenefitsValuationAllowance


Federal
Period End2020-12-26
Value3400000.0
Percentage of FederalAndForeignTaxAttributesWithPotentialTaxBenefitsValuationAllowance100.0

mli:FifoValueOfInventoryConsignedToOthers

mli:FifoValueOfInventoryConsignedToOthers


Fifo
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-25
Value6400000.05500000.05100000.04400000.02500000.03700000.04300000.04300000.04500000.02900000.02600000.0
Percentage of FifoValueOfInventoryConsignedToOthers100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mli:LongTermDebtIncludingUnamortizedDiscountPremiumAndDebtIssuanceCosts

mli:LongTermDebtIncludingUnamortizedDiscountPremiumAndDebtIssuanceCosts


Long
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-26
Value328386497466227216
Percentage of LongTermDebtIncludingUnamortizedDiscountPremiumAndDebtIssuanceCosts100.0100.0100.0100.0100.0100.0

mli:LongTermDebtIncludingUnamortizedDiscountPremiumAndDebtIssuanceCosts us-gaap:LongtermDebtType

mli:JungwooMuellerLineOfCreditDue2021


Long
Period End2020-12-26
Value5.811
Percentage of LongTermDebtIncludingUnamortizedDiscountPremiumAndDebtIssuanceCosts1.8

mli:SeriesIrb


Long
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-26
Value0.251.252.253.254.255.25
Percentage of LongTermDebtIncludingUnamortizedDiscountPremiumAndDebtIssuanceCosts0.10.30.50.71.92.4

us-gaap:LineOfCredit


Long
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-26
Value35901951602000.0
Percentage of LongTermDebtIncludingUnamortizedDiscountPremiumAndDebtIssuanceCosts10.723.339.234.388.00.0

us-gaap:OtherDebtSecurities


Long
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-26
Value2.5555.2955.4584.6948.3095.485
Percentage of LongTermDebtIncludingUnamortizedDiscountPremiumAndDebtIssuanceCosts0.81.41.11.03.72.5

us-gaap:SubordinatedDebt


Long
Period End2020-12-262019-12-282018-12-292017-12-302016-12-31
Value2842842842840.0
Percentage of LongTermDebtIncludingUnamortizedDiscountPremiumAndDebtIssuanceCosts86.773.557.261.00.0

mli:OpenOptionContractsPutAtFairValue us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:Position

mli:OpenOptionContractsPutAtFairValue

us-gaap:CommodityContract, us-gaap:FairValueHedging, us-gaap:Short


Open
Period End2021-06-262021-03-272020-12-262020-09-26
Value6670490.6
Percentage of OpenOptionContractsPutAtFairValue100.0100.0100.0100.0

mli:OtherTaxCarryforwardNetAmount

mli:OtherTaxCarryforwardNetAmount


Other
Period End2020-12-26
Value9000000.0
Percentage of OtherTaxCarryforwardNetAmount100.0

mli:PercentOfMutualFundsAssetsInvestedInNonUsEquities

mli:PercentOfMutualFundsAssetsInvestedInNonUsEquities


Percent
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-31
Value73.00.280.350.410.380.380.670.580.590.57
Percentage of PercentOfMutualFundsAssetsInvestedInNonUsEquities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mli:PercentageOfMutualFundsAssetsInvestedInUSEquities

mli:PercentageOfMutualFundsAssetsInvestedInUSEquities


Percentage
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-31
Value27.00.10.050.050.050.120.230.330.310.32
Percentage of PercentageOfMutualFundsAssetsInvestedInUSEquities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mli:StateIncomeTaxCreditCarryforwards

mli:StateIncomeTaxCreditCarryforwards


State
Period End2020-12-26
Value2600000.0
Percentage of StateIncomeTaxCreditCarryforwards100.0

mli:StateTaxCreditsAndNetOperatingCarryforwardsOffsetByValuationAllowances

mli:StateTaxCreditsAndNetOperatingCarryforwardsOffsetByValuationAllowances


State
Period End2020-12-26
Value12
Percentage of StateTaxCreditsAndNetOperatingCarryforwardsOffsetByValuationAllowances100.0

mli:TemporaryInvestments

mli:TemporaryInvestments


Temporary
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-25
Value130.50.60.64010614417986322315
Percentage of TemporaryInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mli:UkBenefitObligationPercentage us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

mli:UkBenefitObligationPercentage

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Uk
Period End2020-12-262019-12-282018-12-29
Value100.00.430.45
Percentage of UkBenefitObligationPercentage100.0100.0100.0

mli:UkPensionPlanAssetPercentage us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

mli:UkPensionPlanAssetPercentage

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Uk
Period End2020-12-262019-12-282018-12-29
Value100.00.390.37
Percentage of UkPensionPlanAssetPercentage100.0100.0100.0

us-gaap:AccrualForEnvironmentalLossContingencies

us-gaap:AccrualForEnvironmentalLossContingencies


Accrual
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-31
Value24202328212122232422
Percentage of AccrualForEnvironmentalLossContingencies100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccrualForEnvironmentalLossContingencies us-gaap:EnvironmentalRemediationSite

mli:SoutheastKansasSites


Accrual
Period End2020-12-26
Value5.6
Percentage of AccrualForEnvironmentalLossContingencies23.3

us-gaap:AccrualForEnvironmentalLossContingenciesUndiscountedDueAfterFifthYear

us-gaap:AccrualForEnvironmentalLossContingenciesUndiscountedDueAfterFifthYear


Accrual
Period End2020-12-26
Value18
Percentage of AccrualForEnvironmentalLossContingenciesUndiscountedDueAfterFifthYear100.0

us-gaap:AccrualForEnvironmentalLossContingenciesUndiscountedDueInFifthYear

us-gaap:AccrualForEnvironmentalLossContingenciesUndiscountedDueInFifthYear


Accrual
Period End2020-12-26
Value800000.0
Percentage of AccrualForEnvironmentalLossContingenciesUndiscountedDueInFifthYear100.0

us-gaap:AccrualForEnvironmentalLossContingenciesUndiscountedDueInFourthYear

us-gaap:AccrualForEnvironmentalLossContingenciesUndiscountedDueInFourthYear


Accrual
Period End2020-12-26
Value900000.0
Percentage of AccrualForEnvironmentalLossContingenciesUndiscountedDueInFourthYear100.0

us-gaap:AccrualForEnvironmentalLossContingenciesUndiscountedDueInSecondYear

us-gaap:AccrualForEnvironmentalLossContingenciesUndiscountedDueInSecondYear


Accrual
Period End2020-12-26
Value800000.0
Percentage of AccrualForEnvironmentalLossContingenciesUndiscountedDueInSecondYear100.0

us-gaap:AccrualForEnvironmentalLossContingenciesUndiscountedDueInThirdYear

us-gaap:AccrualForEnvironmentalLossContingenciesUndiscountedDueInThirdYear


Accrual
Period End2020-12-26
Value800000.0
Percentage of AccrualForEnvironmentalLossContingenciesUndiscountedDueInThirdYear100.0

us-gaap:AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinOneYear

us-gaap:AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinOneYear


Accrual
Period End2020-12-26
Value2700000.0
Percentage of AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinOneYear100.0

us-gaap:AccruedEnvironmentalLossContingenciesNoncurrent

us-gaap:AccruedEnvironmentalLossContingenciesNoncurrent


Accrued
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252009-12-26
Value2121211919191919192020212223232120202120202020212121212121222222222222222222222323232323
Percentage of AccruedEnvironmentalLossContingenciesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent


Allowance
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252009-12-26
Value2818000.03168000.01538000.01289000.02205000.01613000.0770000.0757000.0737000.0812000.0836000.0795000.0760000.0783000.0980000.0854000.0834000.0962000.0637000.0554000.0565000.0496000.0623000.0623000.0762000.0565000.0666000.0981000.0854000.01114000.02391000.01429000.01481000.01432000.01644000.02300000.01413000.01711000.01564000.01807000.02447000.03158000.05447000.05947000.0
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount mli:AssetAcquisition

us-gaap:BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount

mli:WielandKesslerLLCAssetAcquisition


Business
Period End2020-08-03
Value11
Percentage of BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount100.0

us-gaap:BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount us-gaap:BusinessAcquisition

mli:HartCooleyFlexibleDuctBusiness


Business
Period End2021-01-29
Value1.1
Percentage of BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount0.0

mli:WielandKesslerLLC


Business
Period End2020-08-03
Value28
Percentage of BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount243.4

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets mli:AssetAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets

mli:WielandKesslerLLCAssetAcquisition


Business
Period End2020-08-03
Value66
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets us-gaap:BusinessAcquisition

mli:HartCooleyFlexibleDuctBusiness


Business
Period End2021-01-29
Value12
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets0.0

mli:WielandKesslerLLC


Business
Period End2020-08-03
Value28
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets43.5

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill mli:AssetAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill

mli:WielandKesslerLLCAssetAcquisition


Business
Period End2020-08-03
Value15
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill mli:AssetAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass

mli:WielandKesslerLLCAssetAcquisition, us-gaap:CustomerRelationships


Business
Period End2020-08-03
Value11
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill73.8

mli:WielandKesslerLLCAssetAcquisition, us-gaap:TradeNames


Business
Period End2020-08-03
Value3.96
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill26.2

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory mli:AssetAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory

mli:WielandKesslerLLCAssetAcquisition


Business
Period End2020-08-03
Value25
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory us-gaap:BusinessAcquisition

mli:HartCooleyFlexibleDuctBusiness


Business
Period End2021-01-29
Value4.5
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory0.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities mli:AssetAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities

mli:WielandKesslerLLCAssetAcquisition


Business
Period End2020-08-03
Value8.81
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment mli:AssetAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment

mli:WielandKesslerLLCAssetAcquisition


Business
Period End2020-08-03
Value3.561
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment us-gaap:BusinessAcquisition

mli:HartCooleyFlexibleDuctBusiness


Business
Period End2021-01-29
Value8.4
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment0.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet mli:AssetAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet

mli:WielandKesslerLLCAssetAcquisition


Business
Period End2020-08-03
Value57
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet100.0

us-gaap:DebtIssuanceCostsLineOfCreditArrangementsNet

us-gaap:DebtIssuanceCostsLineOfCreditArrangementsNet


Debt
Period End2020-12-262019-12-282018-12-292017-12-302016-12-31
Value219000.0538000.0857000.01175000.0957000.0
Percentage of DebtIssuanceCostsLineOfCreditArrangementsNet100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilities


Deferred
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-26
Value555545485645
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


Deferred
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-25
Value7872677269747470979992
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsInventory

us-gaap:DeferredTaxAssetsInventory


Deferred
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-25
Value13121210151412117.829117.885
Percentage of DeferredTaxAssetsInventory100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits


Deferred
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-25
Value119.2719.2139.23913151413141313
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost


Deferred
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-31
Value3751000.03378000.02949000.02102000.02416000.03397000.03016000.02486000.01493000.02052000.0
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther


Deferred
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-25
Value7.7826.8347.8479.0299.8219.8231012141413
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesOther


Deferred
Period End2020-12-262019-12-282016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-25
Value638000.0311000.001546000.01721000.02209000.0983000.0893000.01093000.0
Percentage of DeferredTaxLiabilitiesOther100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment


Deferred
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-25
Value4847444352435760494448
Percentage of DeferredTaxLiabilitiesPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPensionPlanLiabilitiesNoncurrent

us-gaap:DefinedBenefitPensionPlanLiabilitiesNoncurrent


Defined
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282018-12-29
Value1112135.7735.8196.7569.12614
Percentage of DefinedBenefitPensionPlanLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-292017-12-30
Value-12782000.0-12653000.0-14382000.0-16407000.0
Percentage of DefinedBenefitPlanAmountsRecognizedInBalanceSheet100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-292017-12-30
Value-12329000.01322000.0-2136000.0-430000.0
Percentage of DefinedBenefitPlanAmountsRecognizedInBalanceSheet96.5-10.414.92.6

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-292017-12-30
Value2.920.0370.04560.0389
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-292017-12-30
Value1.40.01930.03720.0322
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate47.952.281.682.8

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-292017-12-30
Value5.00.050.050.05
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanBenefitObligation us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanBenefitObligation

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-292017-12-302016-12-31
Value1212141615
Percentage of DefinedBenefitPlanBenefitObligation100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-292017-12-302016-12-31
Value90182166186178
Percentage of DefinedBenefitPlanBenefitObligation710.41439.71159.41138.31170.2

us-gaap:DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear

us-gaap:DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear


Defined
Period End2020-12-26
Value-900000.0
Percentage of DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-29
Value4.74.9445.821
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-29
Value181749
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter387.4344.3855.9

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-29
Value0.9471.0141.102
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-29
Value3.42810710
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths362.010637.5945.2

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-29
Value0.9741.0621.226
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-29
Value3.2733.09410
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive336.0291.3831.6

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-29
Value0.9771.0531.112
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-29
Value3.162.99810
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour323.4284.7921.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-29
Value1.0160.9531.061
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-29
Value3.052.90510
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree300.2304.8969.2

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-29
Value0.9420.9591.244
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-29
Value2.9452.81510
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo312.6293.5831.4

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-262018-12-29
Value1000000.01100000.0
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear100.0100.0

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets


Defined
Period End2020-12-262019-12-282018-12-292017-12-30
Value78183164186
Percentage of DefinedBenefitPlanFairValueOfPlanAssets100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets us-gaap:DefinedBenefitPlanByPlanAssetCategories

us-gaap:DefinedBenefitPlanCashAndCashEquivalents


Defined
Period End2020-12-262019-12-282018-12-292017-12-30
Value0.49212125.364
Percentage of DefinedBenefitPlanFairValueOfPlanAssets0.66.77.92.9

us-gaap:MutualFund


Defined
Period End2020-12-262019-12-282018-12-292017-12-30
Value71163146164
Percentage of DefinedBenefitPlanFairValueOfPlanAssets90.689.089.188.5

us-gaap:PrivateEquityFundsDomestic


Defined
Period End2020-12-262019-12-282018-12-292017-12-30
Value6.9047.9155.0285.005
Percentage of DefinedBenefitPlanFairValueOfPlanAssets8.84.33.12.7

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:DefinedBenefitPlanCashAndCashEquivalents, us-gaap:FairValueInputsLevel1


Defined
Period End2020-12-262019-12-282018-12-292017-12-30
Value0.49212125.364
Percentage of DefinedBenefitPlanFairValueOfPlanAssets0.66.77.92.9

us-gaap:MutualFund, us-gaap:FairValueInputsLevel2


Defined
Period End2020-12-262019-12-282018-12-292017-12-30
Value71163146156
Percentage of DefinedBenefitPlanFairValueOfPlanAssets90.689.089.184.0

us-gaap:PrivateEquityFundsDomestic, us-gaap:FairValueInputsLevel3


Defined
Period End2020-12-262019-12-282018-12-292017-12-30
Value6.9047.9155.0285.005
Percentage of DefinedBenefitPlanFairValueOfPlanAssets8.84.33.12.7

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:RetirementPlanType

us-gaap:LimitedPartner, us-gaap:FairValueInputsLevel3, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-292017-12-30
Value6.9047.9155.0285.005
Percentage of DefinedBenefitPlanFairValueOfPlanAssets8.84.33.12.7

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Defined
Period End2020-12-262019-12-282018-12-292017-12-30
Value0.492121224
Percentage of DefinedBenefitPlanFairValueOfPlanAssets0.66.77.913.4

us-gaap:FairValueInputsLevel2


Defined
Period End2020-12-262019-12-282018-12-292017-12-30
Value71163146156
Percentage of DefinedBenefitPlanFairValueOfPlanAssets90.689.089.184.0

us-gaap:FairValueInputsLevel3


Defined
Period End2020-12-262019-12-282018-12-292017-12-30
Value6.9047.9155.0285.005
Percentage of DefinedBenefitPlanFairValueOfPlanAssets8.84.33.12.7

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets us-gaap:RetirementPlanType

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-292017-12-302016-12-31
Value78183164186169
Percentage of DefinedBenefitPlanFairValueOfPlanAssets100.0100.0100.0100.00.0

us-gaap:DefinedBenefitPlanFundedStatusOfPlan us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanFundedStatusOfPlan

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-292017-12-30
Value-12782000.0-12653000.0-14382000.0-16407000.0
Percentage of DefinedBenefitPlanFundedStatusOfPlan100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-292017-12-30
Value-12329000.01322000.0-2136000.0-430000.0
Percentage of DefinedBenefitPlanFundedStatusOfPlan96.5-10.414.92.6

us-gaap:DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear us-gaap:Range

us-gaap:DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear

srt:Maximum


Defined
Period End2020-12-262019-12-282018-12-29
Value8.70.070.084
Percentage of DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear100.0100.0100.0

srt:Minimum


Defined
Period End2020-12-262019-12-282018-12-29
Value4.30.040.064
Percentage of DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear49.457.176.2

us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations

mli:AlternativeInvestments, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-292017-12-30
Value9.00.040.030.03
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations100.0100.0100.0100.0

mli:MultiAssetSecurities, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-29
Value24.00.090
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations266.7225.00.0

us-gaap:DefinedBenefitPlanCashAndCashEquivalents, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-292017-12-30
Value1.00.070.080.03
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations11.1175.0266.7100.0

us-gaap:DefinedBenefitPlanEquitySecurities, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-292017-12-30
Value66.00.250.350.46
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations733.3625.01166.71533.3

us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations us-gaap:Range, us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType

srt:Maximum, mli:AlternativeInvestments, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-29
Value10.00.050.05
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations111.1125.0166.7

srt:Maximum, us-gaap:DefinedBenefitPlanEquitySecurities, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-262019-12-282018-12-29
Value70.00.30.3
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations777.8750.01000.0

us-gaap:DepositLiabilitiesAccruedInterest

us-gaap:DepositLiabilitiesAccruedInterest


Deposit
Period End2020-12-262019-12-282018-12-292017-12-302016-12-31
Value5400000.06000000.05800000.05900000.0300000.0
Percentage of DepositLiabilitiesAccruedInterest100.0100.0100.0100.0100.0

us-gaap:DerivativeAssetFairValueGrossLiability us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:DerivativeAssetFairValueGrossLiability

us-gaap:OtherCurrentAssets, us-gaap:CommodityContract, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282013-12-28
Value83000.055000.08000.018000.00237000.012000.027000.069000.024000.01000.0127000.0015000.05000.0120000.0118000.00148000.023000.085000.082000.0000102000.04000.076000.052000.010000.0
Percentage of DerivativeAssetFairValueGrossLiability100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0

us-gaap:DerivativeAssets us-gaap:HedgingDesignation

us-gaap:DerivativeAssets

us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282013-12-28
Value49000.01910000.01205000.0773000.01155000.039000.01423000.02000.0139000.01342000.087000.080000.08000.0304000.01009000.083000.0254000.0600000.0865000.01611000.01676000.0660000.060000.0511000.01361000.0839000.095000.0458000.0780000.02598000.0
Percentage of DerivativeAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeCollateralObligationToReturnCash

us-gaap:DerivativeCollateralObligationToReturnCash


Derivative
Period End2021-06-262021-03-272020-12-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282013-12-28
Value14187.60.1160.22.21.80.53.63.42.11.35.33.01.22.01.41.41.02.72.61.71.51.70.50.5-0.972-2.051
Percentage of DerivativeCollateralObligationToReturnCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeFairValueOfDerivativeAsset us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:DerivativeFairValueOfDerivativeAsset

us-gaap:OtherCurrentAssets, us-gaap:CommodityContract, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282013-12-28
Value132000.01965000.01213000.0791000.01155000.0276000.01435000.029000.0208000.01366000.088000.0207000.08000.0319000.01014000.0203000.0372000.0600000.01013000.01634000.01761000.0654000.060000.0511000.01361000.0941000.099000.0526000.0513000.0448000.0
Percentage of DerivativeFairValueOfDerivativeAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeFairValueOfDerivativeLiability us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:DerivativeFairValueOfDerivativeLiability

us-gaap:OtherCurrentLiabilities, us-gaap:CommodityContract, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-262021-03-272020-12-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282013-12-28
Value7.285145.8630.103120.1590.8830.1590.091.3821.8310.7870.443.211.770.4570.1970.920.1290.5220.9791.8641.9121.3190.6140.8320.1150.0472.107
Percentage of DerivativeFairValueOfDerivativeLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeLiabilities us-gaap:HedgingDesignation

us-gaap:DerivativeLiabilities

us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-262021-03-272020-12-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282013-12-28
Value5.49714-5.7950.08812-0.1090.8080.090.09-1.2790.9510.6390.365-3.1551.0230.5560.424-1.1431.732.9053.176-3.3594.6913.2342.749-1.825-0.173-0.711-1.767
Percentage of DerivativeLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeLiabilitiesCurrent

us-gaap:DerivativeLiabilitiesCurrent


Derivative
Period End2020-12-262019-12-28
Value6300000.0200000.0
Percentage of DerivativeLiabilitiesCurrent100.0100.0

us-gaap:DerivativeLiabilityFairValueGrossAsset us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:DerivativeLiabilityFairValueGrossAsset

us-gaap:OtherCurrentLiabilities, us-gaap:CommodityContract, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-262020-12-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282013-12-28
Value1788000.068000.015000.016000.050000.075000.069000.00103000.0880000.0148000.075000.055000.0796000.0068000.0564000.0024000.0122000.0238000.061000.040000.0310000.015000.010000.00340000.0
Percentage of DerivativeLiabilityFairValueGrossAsset100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent


Employee
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252009-12-26
Value3939464940334138332938373127333430283534312735343430413434273733312534313228393532253324
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized


Employee
Period End2020-12-26
Value20
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized100.0

us-gaap:EquityMethodInvestmentOwnershipPercentage us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:EquityMethodInvestmentOwnershipPercentage

mli:CayanVenturesandBahrainMumtalakatHoldingCompany


Equity
Period End2020-12-262019-12-282018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-01
Value40.00.40.40.40.40.40.40.40.4
Percentage of EquityMethodInvestmentOwnershipPercentage100.0100.0100.0100.0100.0100.0100.0100.0100.0

mli:MuellerMiddleEast


Equity
Period End2021-06-262021-03-272020-09-262020-06-272020-03-282019-09-282019-06-292019-03-30
Value40.040.040.00.40.40.40.40.4
Percentage of EquityMethodInvestmentOwnershipPercentage0.00.00.00.00.00.00.00.0

mli:MuellerMiddleEastBSC


Equity
Period End2020-12-262019-12-282018-12-29
Value40.00.40.4
Percentage of EquityMethodInvestmentOwnershipPercentage100.0100.0100.0

mli:SecondUnconsolidatedAffiliate


Equity
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-10-012016-07-022016-04-02
Value50.050.050.050.00.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.5
Percentage of EquityMethodInvestmentOwnershipPercentage0.00.0125.00.00.00.0125.00.00.00.0125.0125.0125.0125.0125.0125.0125.00.00.00.00.0

mli:TecumsehProductsHoldingsLLC


Equity
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-10-012016-07-022016-04-02
Value50.050.050.050.00.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.5
Percentage of EquityMethodInvestmentOwnershipPercentage0.00.0125.00.00.00.0125.00.00.00.0125.0125.0125.0125.0125.0125.0125.00.00.00.00.0

us-gaap:FIFOInventoryAmount

us-gaap:FIFOInventoryAmount


F
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-25
Value10887911117680104117109101126
Percentage of FIFOInventoryAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

mli:OtherGross


Finite
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-27
Value1.0910.6460.4370.6230.6940.7280.453
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0

mli:PatentsAndTechnology


Finite
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-27
Value5.6724.062.5951.8681.1795.3234.744
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization519.9628.5593.8299.8169.9731.21047.2

us-gaap:CustomerRelationships


Finite
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-27
Value118.7736.3094.6442.8451.4880.526
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization1070.21358.01443.7745.4409.9204.4116.1

us-gaap:NoncompeteAgreements


Finite
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-27
Value2.5272.1561.5821.4974.0632.8381.307
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization231.6333.7362.0240.3585.4389.8288.5

us-gaap:OtherIntangibleAssets


Finite
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-27
Value251813109.813107.282
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization2332.02923.23000.21638.41414.01504.31607.5

us-gaap:TradeNames


Finite
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-27
Value4.4763.2492.1881.5751.0320.5740.252
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization410.3502.9500.7252.8148.778.855.6

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive


Finite
Period End2020-12-26
Value46
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths


Finite
Period End2020-12-26
Value6393000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive


Finite
Period End2020-12-26
Value5743000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFive100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour


Finite
Period End2020-12-26
Value5769000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFour100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree


Finite
Period End2020-12-26
Value6000000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearThree100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo


Finite
Period End2020-12-26
Value6311000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo100.0

us-gaap:FiniteLivedIntangibleAssetsGross us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsGross

mli:OtherGross


Finite
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-27
Value1.6761.6762.5260.2130.2130.2130.877
Percentage of FiniteLivedIntangibleAssetsGross100.0100.0100.0100.0100.0100.0100.0

mli:PatentsAndTechnology


Finite
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-27
Value2219177.6735.9229.7986.852
Percentage of FiniteLivedIntangibleAssetsGross1347.61181.6707.83602.32780.34600.0781.3

us-gaap:CustomerRelationships


Finite
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-27
Value61444336293011
Percentage of FiniteLivedIntangibleAssetsGross3643.72674.91706.417144.614006.114498.61351.4

us-gaap:NoncompeteAgreements


Finite
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-27
Value2.6892.4992.42.8345.9266.5344.495
Percentage of FiniteLivedIntangibleAssetsGross160.4149.195.01330.52782.23067.6512.5

us-gaap:OtherIntangibleAssets


Finite
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-27
Value102787552455125
Percentage of FiniteLivedIntangibleAssetsGross6124.64711.62972.424514.121587.324219.22935.7

us-gaap:TradeNames


Finite
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-27
Value14109.1734.9774.0874.161.67
Percentage of FiniteLivedIntangibleAssetsGross873.0605.9363.12336.61918.81953.1190.4

us-gaap:GainContingencyUnrecordedAmount us-gaap:LossContingenciesByNatureOfContingency

us-gaap:GainContingencyUnrecordedAmount

mli:DeepwaterHorizonEconomicandPropertyDamageClaim


Gain
Period End2020-12-262020-02-12
Value2221
Percentage of GainContingencyUnrecordedAmount100.0100.0

us-gaap:GoodwillGross

us-gaap:GoodwillGross


Goodwill
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-252009-12-26
Value217202199179173169152143153151151151
Percentage of GoodwillGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GoodwillGross us-gaap:StatementBusinessSegments

mli:Climate


Goodwill
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-27
Value2321224.4164.4164.4162.329
Percentage of GoodwillGross10.910.711.12.52.52.61.5

mli:IndustrialMetals


Goodwill
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-27
Value8.8548.8548.8548.8548.8548.8548.853
Percentage of GoodwillGross4.14.44.44.95.15.25.8

mli:PipingSystems


Goodwill
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-27
Value184172168166160156141
Percentage of GoodwillGross85.084.984.592.692.392.292.7

us-gaap:GuaranteeObligationsMaximumExposure

us-gaap:GuaranteeObligationsMaximumExposure


Guarantee
Period End2021-06-262021-03-272020-09-26
Value231919
Percentage of GuaranteeObligationsMaximumExposure100.0100.0100.0

us-gaap:InventoryAdjustments

us-gaap:InventoryAdjustments


Inventory
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022010-12-25
Value8.2918.297.0717.717.7067.516.3186.4427.226.9596.9957.0727.2866.7716.7976.376.4066.3246.8897.0445.4495.6236.186.1927.0254.8775.1895.5545.115.8666.1156.4096.8047.2645.6455.4415.3445.4065.156114.964.55
Percentage of InventoryAdjustments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryWorkInProcess

us-gaap:InventoryWorkInProcess


Inventory
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022010-12-25
Value735249415147486461605861576346473028423736372538513039446050434845394022283138566434
Percentage of InventoryWorkInProcess100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LIFOInventoryAmount

us-gaap:LIFOInventoryAmount


L
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-25
Value1716182614272534191521
Percentage of LIFOInventoryAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths


Lessee
Period End2020-12-26
Value7353000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths100.0

us-gaap:LettersOfCreditOutstandingAmount us-gaap:LineOfCreditFacility

us-gaap:LettersOfCreditOutstandingAmount

mli:CreditAgreement


Letters
Period End2020-12-262015-12-262014-12-27
Value198.810
Percentage of LettersOfCreditOutstandingAmount100.0100.0100.0

us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity us-gaap:LineOfCreditFacility

us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity

us-gaap:LineOfCredit


Line
Period End2020-12-26
Value350
Percentage of LineOfCreditFacilityCurrentBorrowingCapacity100.0

us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity us-gaap:LongtermDebtType

us-gaap:LineOfCredit


Line
Period End2021-06-26
Value350
Percentage of LineOfCreditFacilityCurrentBorrowingCapacity0.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive


Long
Period End2020-12-26
Value285
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths


Long
Period End2020-12-26
Value41
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive


Long
Period End2020-12-26
Value167000.0
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour


Long
Period End2020-12-26
Value222000.0
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree


Long
Period End2020-12-26
Value222000.0
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo


Long
Period End2020-12-26
Value222000.0
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo100.0

us-gaap:MinorityInterestOwnershipPercentageByNoncontrollingOwners us-gaap:Ownership

us-gaap:MinorityInterestOwnershipPercentageByNoncontrollingOwners

mli:JungwooMetalIndCoLTD


Minority
Period End2020-12-26
Value40.0
Percentage of MinorityInterestOwnershipPercentageByNoncontrollingOwners100.0

us-gaap:OpenOptionContractsWrittenAtFairValue us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:Position

us-gaap:OpenOptionContractsWrittenAtFairValue

us-gaap:CommodityContract, us-gaap:CashFlowHedging, us-gaap:Long


Open
Period End2021-06-262021-03-272020-12-262020-09-262014-09-272014-06-28
Value83215.47.01819
Percentage of OpenOptionContractsWrittenAtFairValue100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent


Operating
Period End2020-12-262019-12-28
Value3.915.82
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent100.0100.0

us-gaap:OperatingLossCarryforwards

us-gaap:OperatingLossCarryforwards


Operating
Period End2020-12-26
Value9600000.0
Percentage of OperatingLossCarryforwards100.0

us-gaap:OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent

us-gaap:OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent


Other
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-262015-09-262015-06-272015-03-282014-12-272014-09-272014-06-282014-03-292013-12-282013-09-282013-06-292013-03-302012-12-292012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-252009-12-26
Value1313131212121314141414161617171616161617171717262121211616161619191919212121212323222223
Percentage of OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities us-gaap:RetirementPlanType

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Pension
Period End2020-12-262019-12-282018-12-292017-12-30
Value948000.01013000.01080000.01070000.0
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities100.0100.0100.0100.0

us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue

us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue


Restricted
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-30
Value14198.1980.6360.8170.02.0582.5251.3024.4144.2062.8982.086.189
Percentage of RestrictedCashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedCashAndCashEquivalentsNoncurrent

us-gaap:RestrictedCashAndCashEquivalentsNoncurrent


Restricted
Period End2021-06-262021-03-272020-12-262020-09-262020-06-272020-03-282019-12-282019-09-282019-06-292019-03-302018-12-292018-09-292018-06-302018-03-312017-12-30
Value103000.0103000.0103000.0103000.0102000.0102000.098000.0107000.0107000.0108000.0108000.0108000.0105000.0105000.0105000.0
Percentage of RestrictedCashAndCashEquivalentsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedCashEquivalentsNoncurrent

us-gaap:RestrictedCashEquivalentsNoncurrent


Restricted
Period End2020-12-262019-12-282018-12-29
Value103000.098000.0108000.0
Percentage of RestrictedCashEquivalentsNoncurrent100.0100.0100.0

us-gaap:SalesAndExciseTaxPayableCurrent

us-gaap:SalesAndExciseTaxPayableCurrent


Sales
Period End2020-12-26
Value6400000.0
Percentage of SalesAndExciseTaxPayableCurrent100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

us-gaap:PerformanceShares


Share
Period End2020-12-262019-12-28
Value495000.0298000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber100.0100.0

us-gaap:RestrictedStock


Share
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-26
Value706000.01062000.0930000.0781000.0709000.0705000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber142.6356.40.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:PerformanceShares


Share
Period End2020-12-262019-12-28
Value30.531.08
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0

us-gaap:RestrictedStock


Share
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-26
Value30.8931.3432.1431.8331.0228.08
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue101.3100.80.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant

us-gaap:EmployeeStockOption


Share
Period End2020-12-26
Value1600000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2020-12-26
Value24.92
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:EmployeeStockOption


Share
Period End2020-12-26
Value6400000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber

us-gaap:EmployeeStockOption


Share
Period End2020-12-26
Value568000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding us-gaap:AwardType

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding

us-gaap:PerformanceShares


Sharebased
Period End2020-12-26
Value17
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding100.0

us-gaap:RestrictedStock


Sharebased
Period End2020-12-26
Value24
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding143.6

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1 us-gaap:AwardType

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1

us-gaap:EmployeeStockOption


Sharebased
Period End2020-12-26
Value5700000.0
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1100.0

us-gaap:TreasuryStockShares

us-gaap:TreasuryStockShares


Treasury
Period End2020-12-26
Value6400000.0
Percentage of TreasuryStockShares100.0

us-gaap:ValuationAllowancesAndReservesBalance us-gaap:ValuationAllowancesAndReservesType

us-gaap:ValuationAllowancesAndReservesBalance

us-gaap:AllowanceForCreditLoss


Valuation
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-26
Value1.5380.770.8360.980.6370.623
Percentage of ValuationAllowancesAndReservesBalance100.0100.0100.0100.0100.0100.0

us-gaap:ReserveForEnvironmentalCosts


Valuation
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-252009-12-312009-12-262008-12-27
Value2420232821212223242223232323
Percentage of ValuationAllowancesAndReservesBalance1560.52709.92825.22857.63432.33477.80.00.00.00.00.00.00.00.0

us-gaap:ValuationAllowanceOfDeferredTaxAssets


Valuation
Period End2020-12-262019-12-282018-12-292017-12-302016-12-312015-12-262014-12-272013-12-282012-12-292011-12-312010-12-252009-12-312009-12-262008-12-27
Value2723253018171722302928333332
Percentage of ValuationAllowancesAndReservesBalance1768.53003.93027.63093.52932.72833.10.00.00.00.00.00.00.00.0

Line plots across dimensions of each concept


us-gaap:SharesIssued
us-gaap:StatementEquityComponents
(None,)
Shares Issuedus-gaap: Statement Equity Components
COGS Ratio
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
C O G S  Ratious-gaap: Consolidation Items, us-gaap: Statement Business Segments
Operating Margin
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
Operating  Marginus-gaap: Consolidation Items, us-gaap: Statement Business Segments
SG&A Ratio
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
S G& A  Ratious-gaap: Consolidation Items, us-gaap: Statement Business Segments
TTM Greenblatt ROC
_
(None,)
T T M  Greenblatt  R O C_
us-gaap:CostOfGoodsAndServicesSold
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
Cost Of Goods And Services Soldus-gaap: Consolidation Items, us-gaap: Statement Business Segments
us-gaap:IncomeTaxExpenseBenefit
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
('us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome', None)
Income Tax Expense Benefitus-gaap: Reclassification Out Of Accumulated Other Comprehensive Income, us-gaap: Statement Equity Components
us-gaap:NetIncomeLoss
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
('us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome', None)
Net Income Lossus-gaap: Reclassification Out Of Accumulated Other Comprehensive Income, us-gaap: Statement Equity Components
us-gaap:OperatingIncomeLoss
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
Operating Income Lossus-gaap: Consolidation Items, us-gaap: Statement Business Segments
us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
(None, 'us-gaap:CashFlowHedging')
Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Taxus-gaap: Derivative Instrument Risk, us-gaap: Derivative Instruments Gain Loss By Hedging Relationship
us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents
(None,)
Other Comprehensive Income Loss Net Of Taxus-gaap: Statement Equity Components
us-gaap:ProfitLoss
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
(None,)
Profit Lossus-gaap: Schedule Of Equity Method Investment Equity Method Investee Name
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ConsolidationItems
(None,)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Consolidation Items
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ConsolidationItems, us-gaap:ProductOrService
('us-gaap:OperatingSegments', None)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Consolidation Items, us-gaap: Product Or Service
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None, 'mli:Climate')
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Consolidation Items, us-gaap: Product Or Service, us-gaap: Statement Business Segments
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Consolidation Items, us-gaap: Statement Business Segments
us-gaap:SellingGeneralAndAdministrativeExpense
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
Selling General And Administrative Expenseus-gaap: Consolidation Items, us-gaap: Statement Business Segments
us-gaap:Assets
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
Assetsus-gaap: Consolidation Items, us-gaap: Statement Business Segments
us-gaap:Assets
us-gaap:ConsolidationItems
(None,)
Assetsus-gaap: Consolidation Items
us-gaap:NoncurrentAssets
us-gaap:StatementGeographical
(None,)
Noncurrent Assetsus-gaap: Statement Geographical
us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType
(None,)
Property Plant And Equipment Grossus-gaap: Property Plant And Equipment By Type
us-gaap:Goodwill
us-gaap:StatementBusinessSegments
(None,)
Goodwillus-gaap: Statement Business Segments
us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
(None,)
Finite Lived Intangible Assets Netus-gaap: Finite Lived Intangible Assets By Major Class
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
us-gaap:RetirementPlanType
(None,)
Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrentus-gaap: Retirement Plan Type
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents
(None,)
Stockholders Equity Including Portion Attributable To Noncontrolling Interestus-gaap: Statement Equity Components
us-gaap:DepreciationDepletionAndAmortization
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
Depreciation Depletion And Amortizationus-gaap: Consolidation Items, us-gaap: Statement Business Segments
us-gaap:NetIncomeLoss
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
('us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome', None)
Net Income Lossus-gaap: Reclassification Out Of Accumulated Other Comprehensive Income, us-gaap: Statement Equity Components
us-gaap:ProfitLoss
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
(None,)
Profit Lossus-gaap: Schedule Of Equity Method Investment Equity Method Investee Name