SNDR


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

Table of contents



us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:PlanName

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:CostsAndExpenses

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxesPaidNet

us-gaap:InterestExpense

us-gaap:LitigationSettlementExpense

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:NonoperatingIncomeExpense

us-gaap:OperatingCostsAndExpenses

us-gaap:OperatingIncomeLoss
us-gaap:StatementBusinessSegments

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:Revenues
us-gaap:ConsolidationItems
us-gaap:ProductOrService
us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments, us-gaap:Subsegments

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:MarketableSecuritiesCurrent

us-gaap:AccountsReceivableNetCurrent

us-gaap:InventoryNet
us-gaap:PublicUtilitiesInventory

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:MachineryAndEquipmentGross

us-gaap:AssetsNoncurrent

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:Goodwill
us-gaap:StatementBusinessSegments

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent

us-gaap:DividendsPayableCurrent

us-gaap:LiabilitiesCurrent
us-gaap:DebtInstrument
us-gaap:LongTermDebtCurrent
us-gaap:BalanceSheetLocation
us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:LiabilitiesNoncurrent

us-gaap:LongTermDebt
us-gaap:DebtInstrument
us-gaap:DebtInstrument
us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtAndCapitalLeaseObligations

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:OtherLiabilitiesNoncurrent
us-gaap:BalanceSheetLocation
us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive
us-gaap:BalanceSheetLocation
us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:StockIssuedDuringPeriodValueNewIssues
us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsOfDividends

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

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance
us-gaap:Ownership
sndr:EquitySecuritiesWithoutReadilyDeterminableFairValueCurrentPeriodAmount
us-gaap:Ownership, us-gaap:SubsequentEventType

sndr:Proceedsfromsaleofoffleaseinventory

sndr:PurchasedTransportation
us-gaap:StatementBusinessSegments
sndr:Revenuesexcludingfuelsurcharge

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
us-gaap:StatementEquityComponents

us-gaap:AllowanceForDoubtfulAccountsReceivableRecoveries

us-gaap:AllowanceForDoubtfulAccountsReceivableWriteOffs

us-gaap:CapitalExpendituresIncurredButNotYetPaid
us-gaap:Dividends, us-gaap:StatementClassOfStock
us-gaap:CommonStockDividendsPerShareDeclared
us-gaap:Dividends, us-gaap:StatementClassOfStock, us-gaap:SubsequentEventType
us-gaap:StatementClassOfStock
us-gaap:StatementClassOfStock, us-gaap:SubsequentEventType

us-gaap:CostOfGoodsSoldSalesTypeLease

us-gaap:DepreciationAndAmortization
us-gaap:StatementBusinessSegments

us-gaap:DividendsCash
us-gaap:StatementEquityComponents
us-gaap:Dividends
us-gaap:DividendsCommonStockCash
us-gaap:InvestmentType
us-gaap:EquitySecuritiesFvNiUnrealizedGain
us-gaap:Ownership
us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueUpwardPriceAdjustmentAnnualAmount

us-gaap:FinanceLeaseInterestPaymentOnLiability

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FuelCosts

us-gaap:GainLossOnSaleOfPropertyPlantEquipment

us-gaap:GoodwillForeignCurrencyTranslationGainLoss
us-gaap:StatementBusinessSegments

us-gaap:ImpairmentOfLongLivedAssetsToBeDisposedOf

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInReceivables

us-gaap:IncreaseDecreaseInRiskManagementAssetsAndLiabilities

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:InterestIncomeOther

us-gaap:InterestPaid

us-gaap:LaborAndRelatedExpense

us-gaap:OperatingInsuranceAndClaimsCostsProduction

us-gaap:OperatingLeasePayments

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:OtherGeneralExpense

us-gaap:OtherNoncashIncomeExpense

us-gaap:PaymentsForRestructuring

us-gaap:PaymentsToAcquireAdditionalInterestInSubsidiaries

us-gaap:PaymentsToAcquireEquipmentOnLease

us-gaap:PaymentsToAcquireMarketableSecurities

us-gaap:PaymentsToAcquireOtherProductiveAssets

us-gaap:ProceedsFromLeasePayments

us-gaap:ProceedsFromSaleAndMaturityOfMarketableSecurities

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment

us-gaap:ProvisionForDoubtfulAccounts

us-gaap:RepaymentsOfDebtAndCapitalLeaseObligations

us-gaap:RestructuringCharges
us-gaap:RestructuringCostAndReserve, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments

us-gaap:RestructuringCostsAndAssetImpairmentCharges

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:SalesTypeLeaseInterestIncomeLeaseReceivable

us-gaap:SalesTypeLeaseRevenue

us-gaap:SalesTypeLeaseSellingProfitLoss
us-gaap:AwardType, us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType, us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised
us-gaap:StatementEquityComponents

us-gaap:WeightedAverageNumberOfSharesRestrictedStock
us-gaap:StatementClassOfStock
dei:EntityCommonStockSharesOutstanding

sndr:AccountsReceivableAllowanceForCreditLossAndRevenueAdjustmentsCurrent

sndr:AssetsHeldforsale
us-gaap:RestructuringPlan
us-gaap:StatementBusinessSegments

sndr:DeferredTaxAssetsLeasingArrangements

sndr:DeferredTaxAssetsOperatingLossCarryforwardsAndTaxCreditCarryforwards
us-gaap:PropertyPlantAndEquipmentByType
sndr:FinanceLeaseRightOfUseAssetGross

sndr:LandBuildingsAndImprovements

sndr:LesseeLeaseNotYetCommencedAmount

sndr:LongtermDebtandFinanceLeaseObligationNoncurrent

sndr:LongtermDebtandFinanceLeaseObligationsCurrent

sndr:OperatingLeaseOptiontoExtendReasonablyCertain

sndr:SalestypeLeaseUnearnedIncome

sndr:SalestypeLeasesLeaseReceivableCurrent
us-gaap:PlanName
sndr:ShareBasedCompensationArrangementOptionsAndEquityInstrumentsOtherThanOptionsGrantsInPeriodFairValue

us-gaap:AccountsPayableTradeCurrent

us-gaap:AccruedInsuranceCurrent

us-gaap:AccruedInsuranceCurrentAndNoncurrent

us-gaap:AccruedInsuranceNoncurrent

us-gaap:AllowanceForDoubtfulAccountsReceivable
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:AssetsHeldForSaleLongLivedFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:RestructuringPlan

us-gaap:AssetsHeldForSaleNotPartOfDisposalGroup

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtSecurities
us-gaap:BalanceSheetLocation
us-gaap:BalanceSheetLocation, us-gaap:FinancialInstrument

us-gaap:CapitalizedContractCostNet

us-gaap:ContractWithCustomerAssetGross

us-gaap:ContractWithCustomerLiability
us-gaap:DebtInstrument, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:DebtInstrumentFairValue
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensation, us-gaap:PlanName
us-gaap:DeferredCompensationCashbasedArrangementsLiabilityCurrentAndNoncurrent
us-gaap:AwardType, us-gaap:PlanName
us-gaap:DeferredCompensationSharebasedArrangementsLiabilityCurrentAndNoncurrent
us-gaap:DebtInstrument
us-gaap:DeferredFinanceCostsCurrentNet

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsPolicyholderLiabilities

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesLeasingArrangements

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesPrepaidExpenses

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DividendsPayableCurrentAndNoncurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
us-gaap:PlanName
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:EquitySecuritiesFVNINoncurrent
us-gaap:InvestmentType
us-gaap:EquitySecuritiesFvNiCost
us-gaap:Ownership
us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueAmount
us-gaap:Ownership, us-gaap:SubsequentEventType
us-gaap:Ownership
us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueUpwardPriceAdjustmentCumulativeAmount

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueInNextRollingTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FinanceLeaseRightOfUseAssetAccumulatedAmortization

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

us-gaap:GoodwillGross
us-gaap:ReportingUnit

us-gaap:GoodwillImpairedAccumulatedImpairmentLoss
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:InvestmentsFairValueDisclosure
us-gaap:Range, us-gaap:FairValueByMeasurementFrequency, us-gaap:RestructuringPlan
us-gaap:LesseeOperatingLeaseDiscountRate

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths
us-gaap:CreditFacility, us-gaap:DebtInstrument
us-gaap:LettersOfCreditOutstandingAmount
us-gaap:DebtInstrument
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

us-gaap:LoansAndLeasesReceivableAllowance

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent
us-gaap:DebtInstrument
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
us-gaap:DebtInstrument
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
us-gaap:DebtInstrument
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
us-gaap:DebtInstrument
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
us-gaap:DebtInstrument
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
us-gaap:DebtInstrument
us-gaap:LongtermDebtWeightedAverageInterestRate
us-gaap:Ownership
us-gaap:MinorityInterestOwnershipPercentageByNoncontrollingOwners
us-gaap:Ownership, us-gaap:SubsequentEventType

us-gaap:NetInvestmentInLeaseCurrent

us-gaap:NetInvestmentInLeaseNoncurrent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent
us-gaap:FairValueByMeasurementFrequency

us-gaap:OperatingLossCarryforwards

us-gaap:OtherCommitment

us-gaap:OtherReceivablesNetCurrent

us-gaap:PrepaidInsurance

us-gaap:PropertyPlantAndEquipmentOther

us-gaap:PurchaseCommitmentRemainingMinimumAmountCommitted

us-gaap:RestructuringReserve
us-gaap:RestructuringCostAndReserve, us-gaap:StatementBusinessSegments

us-gaap:RevenueRemainingPerformanceObligation
us-gaap:ProductOrService, us-gaap:TimingOfTransferOfGoodOrService

us-gaap:SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived
us-gaap:FinancingReceivablesPeriodPastDue

us-gaap:SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFiveYears

us-gaap:SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFourYears

us-gaap:SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedNextTwelveMonths

us-gaap:SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedThreeYears

us-gaap:SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedTwoYears

us-gaap:SalesTypeLeaseLeaseReceivable

us-gaap:SalesTypeLeaseNetInvestmentInLease
us-gaap:InternalCreditAssessment

us-gaap:SalesTypeLeaseNetInvestmentInLeaseAfterAllowanceForCreditLoss

us-gaap:SalesTypeLeaseNetInvestmentInLeaseAfterAllowanceForCreditLossCurrent

us-gaap:SalesTypeLeaseNetInvestmentInLeaseAfterAllowanceForCreditLossNoncurrent

us-gaap:SalesTypeLeaseNetInvestmentInLeaseAllowanceForCreditLoss
us-gaap:InternalCreditAssessment
us-gaap:SalesTypeLeaseNetInvestmentInLeaseOriginatedFiveOrMoreYearsBeforeLatestFiscalYear
us-gaap:InternalCreditAssessment
us-gaap:SalesTypeLeaseNetInvestmentInLeaseOriginatedFourYearsBeforeLatestFiscalYear
us-gaap:InternalCreditAssessment
us-gaap:SalesTypeLeaseNetInvestmentInLeaseOriginatedInCurrentFiscalYear
us-gaap:InternalCreditAssessment
us-gaap:SalesTypeLeaseNetInvestmentInLeaseOriginatedInFiscalYearBeforeLatestFiscalYear
us-gaap:InternalCreditAssessment
us-gaap:SalesTypeLeaseNetInvestmentInLeaseOriginatedThreeYearsBeforeLatestFiscalYear
us-gaap:InternalCreditAssessment
us-gaap:SalesTypeLeaseNetInvestmentInLeaseOriginatedTwoYearsBeforeLatestFiscalYear

us-gaap:SalesTypeLeaseNetInvestmentInLeasePastDue
us-gaap:FinancingReceivablesPeriodPastDue

us-gaap:SalesTypeLeaseResidualValueOfLeasedAsset
us-gaap:AwardType, us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
us-gaap:AwardType
us-gaap:SharePrice
us-gaap:AwardType
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
us-gaap:AwardType
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
us-gaap:ValuationAllowancesAndReservesType
us-gaap:ValuationAllowancesAndReservesBalance

Plots across concepts


IncomeStatement
Other Comprehensive Income Loss Net Of Tax
Expenses
Allocated Share Based Compensation Expense
Balance Sheet
Operating Lease Right Of Use Asset
Assets
Inventory Net
Current Assets
Inventory Net
NonCurrent Assets
Operating Lease Right Of Use Asset
PropertyPlantAndEquipmentNet
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
Liabilities
Dividends Payable Current And Noncurrent
Current Liabilities
Employee Related Liabilities Current
Noncurrent Liabilities
Other Liabilities Noncurrent
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
CashFlow
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInOperatingActivities
Share Based Compensation
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
Shares
Weighted Average Number Of Shares Outstanding Basic
NonoperatingIncomeExpense
Interest Expense
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Undiscounted Excess Amount

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding █▁177.9177.8NA177.7177.5177.4NA177.3177.4177.4NA177.2177.2177.2NA177.0174.453156.8NA156.6156.425155.813
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▁177.6177.4NA177.3177.2177.1NA177.1177.1177.0NA177.0177.0176.9NA176.9174.424156.419NA156.4156.295155.704
us-gaap:EarningsPerShareBasic ▃▂▃▂▂▂▂▁▁▁▃▂▂▂█▁▂▁▂▂▂▁0.60.310.429999999999999940.250.260.250.320.110.190.210.480.40.370.271.60.210.270.140.310.240.280.18
us-gaap:EarningsPerShareDiluted ▃▂▃▂▂▂▂▁▁▁▃▂▂▂█▁▂▁▂▂▂▁0.60.310.429999999999999940.250.260.250.320.110.190.210.480.40.370.271.60.210.270.140.30.240.280.18
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
 Operating Margin us-gaap:StatementBusinessSegments us-gaap:AllOtherSegmentsNANANA85.589.899.4NA94.395.899.9NA91.282.774.6NA85.478.950.3NA66.555.559NA
 Operating Margin us-gaap:StatementBusinessSegments us-gaap:CorporateAndOther▁█88.598.4NANA89.899.4NANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
 TTM Greenblatt ROC _ _█▄▇▃▃▃▅▁▂▃▇▆▆▄▆▄▅▂▅125.876.2105.163.363.454.978.129.049.251.5118.697.991.767.693.764.179.00243.5587.9NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
us-gaap:AllocatedShareBasedCompensationExpense NANA-2.9-1.90.81.62.3-2.40.32.04.62.12.12.00.91.71.90.6NANANANA
 us-gaap:AllocatedShareBasedCompensationExpense us-gaap:PlanName sndr:A2017OmnibusIncentivePlan▁█2.94.2NANA0.81.6NANANANANANANANANANANANANANANANA
us-gaap:ComprehensiveIncomeNetOfTax ▃▂▃▂▂▂▂▁▁▁▃▂▂▂█▁▂▁▂▁▂▁107.054.177.744.947.142.756.519.434.637.684.969.866.247.0283.536.946.03422.58547.536.744.55728.581
us-gaap:CostsAndExpenses █▆▇▅▃▅▅▆▇▆▇▇▆▅▅▄▃▃▃▃▂▁1235.01152.41160.10000000000041072.4969.41064.21078.21154.91163.51142.61203.01182.21144.61071.41097.51046.7996.17962.889982.0982.4914.934876.07
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest █▄▆▃▃▃▄▁▂▂▆▅▅▃▅▃▄▂▄▃▄▂142.872.8101.860.162.758.376.126.745.949.4116.595.388.364.590.260.774.59937.93180.664.573.61146.899
us-gaap:IncomeTaxExpenseBenefit █▇█▇▇▇█▇▇▇███▇▁██▇███▇36.318.024.915.616.214.520.27.011.412.531.724.622.516.9-193.723.828.12615.36232.827.729.44418.76
us-gaap:IncomeTaxesPaidNet ▁▃█▁▃▃▇▂▂▃▆▃▂▃▂▃▃▄▃▁▃▅-38.4-1.1107.1-42.9-2.4-0.294.2-22.1-19.8-0.764.5-5.8-19.2-0.5-14.6-3.146-2.09815.6449.0-36.432-4.05836.49
us-gaap:InterestExpense ▂▃▂▃▃▄▃▄▇▄▁▂▄▃▄▃▆▇██▇▆3.03.43.13.43.33.83.53.85.43.92.42.73.93.53.73.64.6245.4865.75.85.0874.801
us-gaap:LitigationSettlementExpense NANANA13.1NANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss ▃▂▃▂▂▂▂▁▁▁▃▂▂▂█▁▂▁▂▁▂▁106.554.876.944.546.543.855.919.734.536.984.870.765.847.6283.936.946.47322.56947.836.844.16728.139
us-gaap:NonoperatingIncomeExpense █▂▂▂▃▄▃▂▂▂▂▂▂▂▂▂▂▁▁▁▁▂17.0-3.4-3.3-3.2-0.73.4-2.0-2.3-3.3-2.1-2.1-2.6-3.4-3.1-3.5-3.4-4.403-5.619-7.3-6.3-6.028-5.134
us-gaap:OperatingCostsAndExpenses ▂▆▆█▃▅▁▇117.2136.1137.3144.6119.1132.0111.90000000000006139.1NANANANANANANANANANANANANANA
us-gaap:OperatingIncomeLoss █▄▇▃▃▃▅▁▂▃▇▆▆▄▆▄▅▂▅▄▅▃125.876.2105.163.363.454.978.129.049.251.5118.697.991.767.693.764.179.00243.5587.970.879.63952.033
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax ▆▄█▇▅▁▆▃▄▆▄▁▇▃▄▄▃▄▆▅▆▅0.3-0.10.80.50.1-0.80.2-0.3-0.20.3-0.2-0.90.5-0.4-0.2-0.1-0.499-0.1210.30.00.2490.121
us-gaap:OtherComprehensiveIncomeLossNetOfTax █▁0.5-0.7NA0.40.6-1.1NA-0.30.10.7NA-0.90.4-0.6NA-0.5-0.439NANANANANA
us-gaap:OtherNonoperatingIncomeExpense █▁▁▁▂▃▁▁▁▁▂▂▂▂▂▂▂▁▁▁▁▁19.6-0.8-0.6-0.42.15.4-0.4-0.5-0.3-0.40.30.10.50.40.20.20.221-0.133-1.6-0.5-0.941-0.333
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax █▆▆▄▃▄▅▅▆▅▇▇▆▄▅▄▃▂▃▃▂▁1360.81228.61265.21135.71032.81119.11156.31183.91212.71194.11321.61280.11236.31139.01191.21110.81075.1721006.4391069.91053.2994.573928.103
us-gaap:Revenues █▆▆▄▃▄▅▅▆▅▇▇▆▄▅▄▃▂▃▃▂▁1360.81228.61265.21135.71032.81119.11156.31183.91212.71194.11321.61280.11236.31139.01191.21110.81075.1721006.4391069.91053.2994.573928.103
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
us-gaap:Assets ▇▆▅█▇▇▆███▆▆▅▄▄▃▃▁▁3767.83613.33516.23853.63777.73714.93660.13831.03892.73871.43624.53593.93493.43412.83330.53302.83237.2212994.8153054.641NANANA
us-gaap:Liabilities ▅▃▂▃▂▂▁▆██▃1569.41513.41460.71511.11471.91446.41423.71638.81707.31711.41492.2NANANANANANANANANANANA
us-gaap:LiabilitiesAndStockholdersEquity ▇▆▅█▇▇▆███▆▆▅▄▄▃▃▁▁3767.83613.33516.23853.63777.73714.93660.13831.03892.73871.43624.53593.93493.43412.83330.53302.83237.2212994.8153054.641NANANA
us-gaap:StockholdersEquity █▇▇██████▇▇▇▇▇▇▆▆▁▁2198.42099.92055.52342.52305.82268.52236.42192.22185.42160.02132.32053.21992.51934.41890.21616.81586.4970.00.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
us-gaap:AssetsCurrent ▆▆▄█▇▇▆▇▆▆▅▅▅▄▃▃▃▁▁1398.31335.11220.71583.01518.21459.31405.71527.61428.91365.01324.31301.61261.41193.01094.01060.41046.6877.78923.648NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▅▅▄█▇▆▆▅▄▅▄▄▄▃▃▂▃▁▂490.5472.2395.5768.5713.8600.6551.6437.1377.7441.0378.7359.8333.7300.1238.5202.2259.93179.259130.787NA98.664153.376
us-gaap:MarketableSecuritiesCurrent ▆▆▅▄▅▆▆▅▅▅▇▄▁▂▂▄▄▆█49.149.447.145.646.849.248.347.447.547.151.345.039.240.341.644.045.28249.40552.489NANANA
us-gaap:AccountsReceivableNetCurrent █▆▅▃▁▃▂▄▅▅██▇▅▅▄▂▁▁598.3560.0537.7489.0434.9475.8465.8498.8525.0536.8593.1588.7568.0530.4527.9500.8449.174435.859438.997NANANA
us-gaap:InventoryNet ▁▁▃▄▄▅▆▄▄▄▅▅▆▆▇█▇▇▆22.425.644.957.256.560.971.957.757.649.660.860.970.373.283.194.082.95887.17974.126NANANA
us-gaap:PrepaidExpenseAndOtherAssetsCurrent ▃▃▁▃▄▄▃█▅▄▁▂▃▃▁▂▂▃▁106.8108.677.9104.2125.1127.7117.7200.9147.0122.379.596.6108.5115.075.695.292.42104.61880.244NANANA
us-gaap:MachineryAndEquipmentGross ▆▅▆▅▅▄▄▄██▆▆▄▃▃▃▁2896.22858.82880.22878.62841.22815.72790.12814.12990.52975.42900.22885.42803.92771.52770.12745.12677.729NA2596.668NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
us-gaap:AssetsNoncurrent ▆▄▄▄▄▃▃▄▇█▄▄▃▃▃▃▂▁▁2369.52278.22295.52270.62259.52255.62254.42303.42463.82506.42300.22292.32232.02219.82236.52242.42190.6212117.0352130.993NANANA
us-gaap:PropertyPlantAndEquipmentGross ▆▅▆▆▅▄▄▄█▇▆▅▃▃▃▃▁3266.93225.63249.33246.93207.63180.33152.13165.53334.53313.03235.03217.83137.43122.83129.63102.63035.078NA2967.227NANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment ▇█▇█▆▅▄▃▄▅▄▄▃▃▃▂▁1414.01435.01417.41423.21382.11342.51300.51270.71318.91344.81312.81300.21275.81275.61271.51242.21222.664NA1209.172NANANA
us-gaap:PropertyPlantAndEquipmentNet ▄▂▃▃▃▃▄▅█▇▆▅▄▄▄▄▃▁▁1852.91790.61831.91823.71825.51837.81851.61894.82015.61968.21922.21917.61861.61847.21858.11860.41812.4141747.5841758.055NANANA
us-gaap:Goodwill ▁▁▁▁▁▁▁▁▁▇▇████████128.3128.1128.1127.7127.3127.3127.5127.3127.6162.4162.2164.2164.6165.3164.8164.5164.302164.15164.035NANANA
us-gaap:OperatingLeaseRightOfUseAsset NANA69.4NANANA75.573.592.4NANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent █▇▇▆▆▅▅▄▆█▁▁▁▁▁▁▁234.8213.3204.2200.6197.2178.1165.9155.0186.9237.782.679.876.673.874.776.075.78NA76.782NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
us-gaap:DividendsPayableCurrent NANA12.2NANANA10.8NANANANANANANANANANANANANANANA
us-gaap:LiabilitiesCurrent █▇▃▂▂▁▁▇█▆▃▄▃▂▁▂▁▅▇719.5667.1534.6516.6482.2474.6465.2698.4721.9650.3522.6557.0523.6492.7462.0499.9467.652598.366677.268NANANA
 us-gaap:LongTermDebtCurrent us-gaap:DebtInstrument sndr:UnsecuredSeniorNotes██▁100.0100.040.0NA30.030.055.0NANANANANANANANANANANANANANANA
 us-gaap:OperatingLeaseLiabilityCurrent us-gaap:BalanceSheetLocation us-gaap:OtherCurrentLiabilitiesNANA23.6NANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAccruedLiabilitiesCurrent ▇█▅▆▇▅▅▅▇█▄▅▄▃▃▂▁▂▁107.7117.189.299.9108.992.185.494.0105.8114.181.293.876.375.469.658.752.82659.10957.342NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
us-gaap:LiabilitiesNoncurrent ▁▁▃▄▄▄▃▃▄▅▃▄▄▄▄████849.9846.3926.1994.5989.7971.8958.5940.4985.41061.1969.6983.7977.3985.7978.31186.11183.0721195.231190.923NANANA
us-gaap:LongTermDebt NANA305.0NANANA360.0401.3402.7404.6405.0415.4416.6423.8429.8434.0436.694590.474684.296NANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument sndr:UnsecuredSeniorNotes▁▁▁▁▂▂▃▄▄▄▄▄▄▄▄▄▄██305.0305.0305.0305.0335.0335.0360.0400.0400.0400.0400.0400.0400.0400.0400.0400.0400.0500.0500.0NANANA
 us-gaap:LongTermDebtNoncurrent us-gaap:DebtInstrument sndr:UnsecuredSeniorNotes▁▁▅████204.9204.9264.8304.8304.7304.7304.6NANANANANANANANANANANANANANANA
us-gaap:LongTermDebtAndCapitalLeaseObligations ▁▁▃▄▄▄▄▄▅▅▆█████207.1207.2266.4306.4306.4306.1305.8304.6334.5334.7359.6412.5415.2417.1420.6422.9NANA439.6NANANA
us-gaap:DeferredIncomeTaxLiabilitiesNet █▅▂▁▃▃▂469.5457.9450.4446.2451.8453.4449.0NANANA450.6NANANA386.6NANANANANANANA
us-gaap:OtherLiabilitiesNoncurrent ▅▅▅█▇▅▆▆█▇▁▁▁▃▄▅▄██76.278.479.499.893.580.385.085.7100.491.646.149.347.662.168.675.172.83100.334101.13NANANA
 us-gaap:OperatingLeaseLiabilityNoncurrent us-gaap:BalanceSheetLocation us-gaap:OtherNoncurrentLiabilitiesNANA51.0NANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANA17.6NANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANA14.3NANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANA10.4NANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA7.2NANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA5.4NANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
us-gaap:StockholdersEquity █▇▇██████▇▇▇▇▇▇▆▆▁▁2198.42099.92055.52342.52305.82268.52236.42192.22185.42160.02132.32053.21992.51934.41890.21616.81586.4970.00.0NANANA
us-gaap:AdditionalPaidInCapital █▇▆▅▄▄▃▄▅▄▄▃▂▁▁▂▁1559.11555.11552.21548.81545.41543.81542.71544.51546.61544.81544.01539.31537.61535.21534.61535.91533.653NA0.0NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ▇▆▅██▇▇▇▇▆▆▆▅▄▄▂▁▁▂638.7544.7502.5793.7760.8725.7693.6648.2639.0615.5589.3515.0455.1399.8355.680.552.38413.305125.175NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▆▁█0.60.10.8NA-0.4-1.00.1-0.5-0.2-0.3-1.0-1.1-0.2-0.60.00.40.460.8990.883NANANA
us-gaap:StockIssuedDuringPeriodValueNewIssues █▁0.70.1NANA0.10.1NA0.10.2NANANA0.30.2NA340.6340.647NANANANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue ▁█3.34.5NA2.21.11.9NA-2.21.62.0NA2.12.12.0NA6.34.613NANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▆▃▆▆█▅▇▇▇▅▆▆▆▃▆▃▅▃▅▁153.9101.1149.1149.3195.3124.5166.0168.3168.8133.2156.4155.1155.0100.0145.689.007137.49389.2137.852.134NANA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▄▇▃▆▅▆█▅▁▆▄▄▅▇▅▃▄▇▅▃-123.0-11.9-155.7-52.9-70.4-39.75.4-96.2-200.2-59.2-115.5-116.2-83.3-22.6-95.2-133.728-123.572-38.0-71.3-134.543NANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▆▆▁▅▆▅▅▆▅▆▆▆▅▆▆▆█▄▆▇-12.6-12.5-366.4-41.7-11.7-35.8-56.9-12.7-31.9-11.7-22.0-12.8-38.1-15.8-14.1-13.023166.723-102.7-20.768.721NANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▇▇▁▇█▇█▇▅▇18.376.7-373.054.7113.249.0114.559.4-63.362.3NANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
us-gaap:DeferredIncomeTaxExpenseBenefit ▇▇▇▇▇▇▇▇▇▇█▇▇▇▁▇█▇██▇▇11.67.74.5-5.6-1.74.54.1-2.4-9.27.327.86.713.714.0-200.812.50121.24615.05326.333.411.52214.368
us-gaap:IncreaseDecreaseInAccountsPayable ▆▇▅█▄▆▁▅▃▆▁▄▆▆▄▆▄▅▄▃▆▅12.028.76.937.5-6.518.6-35.62.8-14.512.0-32.6-1.321.015.9-6.120.114-8.10310.089-6.9-12.01613.9884.328
us-gaap:NetCashProvidedByUsedInOperatingActivities ▆▃▆▆█▅▇▇▇▅▆▆▆▃▆▃▅▃▅▁153.9101.1149.1149.3195.3124.5166.0168.3168.8133.2156.4155.1155.0100.0145.689.007137.49389.2137.852.134NANA
us-gaap:NetIncomeLoss ▃▂▃▂▂▂▂▁▁▁▃▂▂▂█▁▂▁▂▁▂▁106.554.876.944.546.543.855.919.734.536.984.870.765.847.6283.936.946.47322.56947.836.844.16728.139
us-gaap:ShareBasedCompensation ▆▇▆▅▅▆▁▃▄▇█▇▇▇▅▆▇▇2.9999999999999995.23.52.01.02.4-7.0-2.6-0.16.17.54.94.55.91.74.25.55.6NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▄▇▃▆▅▆█▅▁▆▄▄▅▇▅▃▄▇▅▃-123.0-11.9-155.7-52.9-70.4-39.75.4-96.2-200.2-59.2-115.5-116.2-83.3-22.6-95.2-133.728-123.572-38.0-71.3-134.543NANA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▆▁▆▂▃▁▁▄█▂▅▆▄▂▅▅▆▂▃▇134.619.0143.148.39999999999998461.122.226.777.2181.350.1117.0125.098.344.8114.4111.071123.72939.362.4146.965NANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▆▆▁▅▆▅▅▆▅▆▆▆▅▆▆▆█▄▆▇-12.6-12.5-366.4-41.7-11.7-35.8-56.9-12.7-31.9-11.7-22.0-12.8-38.1-15.8-14.1-13.023166.723-102.7-20.768.721NANA
us-gaap:PaymentsOfDividends ▁▁█▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▁12.512.3366.311.511.510.710.610.610.710.610.610.610.78.88.98.7840.0167.831.30.0NANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value177177177177177177177177177177177177174156156156155
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value177177177177177177177177177177176176174156156156155
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0.60.310.430.250.260.250.320.110.190.210.480.40.370.271.60.210.270.140.310.240.280.18
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0.60.310.430.250.260.250.320.110.190.210.480.40.370.271.60.210.270.140.30.240.280.18
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:AllocatedShareBasedCompensationExpense


Allocated
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-2.9-1.90.81.62.3-2.40.32.04.62.12.12.00.91.71.90.6
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.20.10.10.2-0.20.00.20.30.20.20.20.10.20.20.1

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:PlanName

sndr:A2017OmnibusIncentivePlan


Allocated
Period End2021-06-302021-03-312020-06-302020-03-31
Value2.94.20.81.6
Percentage of AllocatedShareBasedCompensationExpense0.00.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.30.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sndr:A2017OmnibusIncentivePlan0.00.00.00.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value1075477444742561934378469664728336462247364428
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.94.40.04.04.63.84.91.62.93.16.45.55.44.123.83.34.32.24.43.54.53.1

Costs And Expenses

us-gaap:CostsAndExpenses

us-gaap:CostsAndExpenses


Costs
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value123511521160107296910641078115411631142120311821144107110971046996962982982914876
Percentage of CostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax90.893.80.094.493.995.193.297.695.995.791.092.492.694.192.194.292.795.791.893.392.094.4

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value14272101606258762645491169588649060743780647346
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.55.90.05.36.15.26.62.33.84.18.87.47.15.77.65.56.93.87.56.17.45.1

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value361824151614207.0111231242216-193.723281532272918
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.71.50.01.41.61.31.70.60.91.02.41.91.81.5-16.32.12.61.53.12.63.02.0

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet

us-gaap:IncomeTaxesPaidNet


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-38.4-1.1107-42.9-2.4-0.294-22.1-19.8-0.764-5.8-19.2-0.5-14.6-3.146-2.098159.0-36.432-4.05836
Percentage of IncomeTaxesPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.8-0.10.0-3.8-0.2-0.08.1-1.9-1.6-0.14.9-0.5-1.6-0.0-1.2-0.3-0.21.60.8-3.5-0.43.9

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value3.03.43.13.43.33.83.53.85.43.92.42.73.93.53.73.64.6245.4865.75.85.0874.801
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.30.00.30.30.30.30.30.40.30.20.20.30.30.30.30.40.50.50.60.50.5

Litigation Settlement Expense

us-gaap:LitigationSettlementExpense

us-gaap:LitigationSettlementExpense


Litigation
Period End2020-09-30
Value13
Percentage of LitigationSettlementExpense100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.2

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value1065476444643551934368470654728336462247364428
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.84.50.03.94.53.94.81.72.83.16.45.55.34.223.83.34.32.24.53.54.43.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value106544446431934367065478346
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0226.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.84.53.94.53.91.72.83.15.55.34.27.54.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.0

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense

us-gaap:NonoperatingIncomeExpense


Nonoperating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value17-3.4-3.3-3.2-0.73.4-2.0-2.3-3.3-2.1-2.1-2.6-3.4-3.1-3.5-3.4-4.403-5.619-7.3-6.3-6.028-5.134
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.2-0.30.0-0.3-0.10.3-0.2-0.2-0.3-0.2-0.2-0.2-0.3-0.3-0.3-0.3-0.4-0.6-0.7-0.6-0.6-0.6

Operating Costs And Expenses

us-gaap:OperatingCostsAndExpenses

us-gaap:OperatingCostsAndExpenses


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value117136137144119132111139
Percentage of OperatingCostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.611.10.012.711.511.89.711.7

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value12576105636354782949511189791679364794387707952
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.26.20.05.66.14.96.82.44.14.39.07.67.45.97.95.87.34.38.26.78.05.6

us-gaap:OperatingIncomeLoss us-gaap:StatementBusinessSegments

sndr:Intermodal


Operating
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value342023111625301936302112116.61013
Percentage of OperatingIncomeLoss27.726.236.317.429.786.662.038.636.933.632.219.014.215.215.417.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.61.62.01.11.52.12.51.72.82.51.91.11.00.71.01.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sndr:Intermodal0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

sndr:Logistics


Operating
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value17159.18.24.29.99.21012107.79.16.5925.28.48.103
Percentage of OperatingIncomeLoss13.520.914.412.97.734.118.720.012.811.111.414.28.311.911.910.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.21.30.80.80.40.80.80.91.00.80.70.80.60.50.80.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sndr:Logistics0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

sndr:Truckload


Operating
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value7338454036-12.57.9235362474153385361
Percentage of OperatingIncomeLoss58.550.372.063.966.7-43.116.145.054.267.970.164.167.488.475.777.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.43.14.03.93.3-1.10.71.94.15.04.23.75.03.85.16.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sndr:Truckload0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AllOtherSegments


Operating
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value-14.43.7-2.26.51.6-1.9-3.8-11.6-9.31.77.947-6.8-2.1-3.815
Percentage of OperatingIncomeLoss-22.75.8-4.022.43.3-3.7-3.9-12.6-13.82.710.1-15.6-3.0-4.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.30.4-0.20.50.1-0.2-0.3-0.9-0.80.20.7-0.7-0.2-0.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CorporateAndOther


Operating
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.32.03.7-2.2
Percentage of OperatingIncomeLoss0.22.65.8-4.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.20.4-0.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateAndOther0.00.00.00.0

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

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value300000.0-100000.0800000.0500000.0100000.0-800000.0200000.0-300000.0-200000.0300000.0-200000.0-900000.0500000.0-400000.0-200000.0-100000.0-499000.0-121000.0300000.00249000.0121000.0
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.00.00.00.0-0.10.0-0.0-0.00.0-0.0-0.10.0-0.0-0.0-0.0-0.0-0.00.00.00.00.0

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value500000.0-700000.0400000.0600000.0-1100000.0-300000.0100000.0700000.0-900000.0400000.0-600000.0-500000.0-439000.0
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.10.00.1-0.1-0.00.00.1-0.10.0-0.1-0.0-0.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value500000.0-700000.0400000.0600000.0-1100000.0-300000.0100000.0700000.0-900000.0400000.0-600000.0-500000.0-439000.0
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.10.00.1-0.1-0.00.00.1-0.10.0-0.1-0.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value19-0.8-0.6-0.42.15.4-0.4-0.5-0.3-0.40.30.10.50.40.20.20.221-0.133-1.6-0.5-0.941-0.333
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.4-0.10.0-0.00.20.5-0.0-0.0-0.0-0.00.00.00.00.00.00.00.0-0.0-0.1-0.0-0.1-0.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value13601228126511351032111911561183121211941321128012361139119111101075100610691053994928
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value13601228126511351032111911561183121211941321128012361139119111101075100610691053994928
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-17.8-23.4-6.7-15.8-26.7-30.3-24.3-25.5-29.0-30.9-29.8-31.8-25.8-26.5-26.1-25.3-25.3-21.198-19.0-17.3-18.829-19.9
Percentage of Revenues-1.3-1.9-0.5-1.4-2.6-2.7-2.1-2.2-2.4-2.6-2.3-2.5-2.1-2.3-2.2-2.3-2.4-2.1-1.8-1.6-1.9-2.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.3-1.9-0.5-1.4-2.6-2.7-2.1-2.2-2.4-2.6-2.3-2.5-2.1-2.3-2.2-2.3-2.4-2.1-1.8-1.6-1.9-2.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Revenues us-gaap:ProductOrService

sndr:LogisticsManagement


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value464647412931333229586457535259555252
Percentage of Revenues3.43.83.83.62.92.82.92.72.44.94.94.54.44.65.05.04.95.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.43.83.83.62.92.82.92.72.44.94.94.54.44.65.05.04.95.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sndr:LogisticsManagement0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

sndr:Other


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value586363575159435756643047443740494218
Percentage of Revenues4.35.25.05.15.05.33.84.94.75.42.33.73.63.23.44.44.01.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.35.25.05.15.05.33.84.94.75.42.33.73.63.23.44.44.01.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sndr:Other0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

sndr:Transportation


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value125511181154103695110281078109311261071122611751138104910911005979935
Percentage of Revenues92.391.091.291.392.191.993.392.492.989.792.891.892.092.291.690.591.193.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax92.391.091.291.392.191.993.392.492.989.792.891.892.092.291.690.591.193.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sndr:Transportation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Revenues us-gaap:StatementBusinessSegments

sndr:FuelSurcharge


Revenuesus-gaap:
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value1109073681031141241111341331179392908172
Percentage of Revenues8.17.36.46.79.29.610.29.410.510.810.38.58.69.07.77.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.17.36.46.79.29.610.29.410.510.810.38.58.69.07.77.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sndr:FuelSurcharge0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AllOtherSegments


Revenuesus-gaap:
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value8589999495999182748578506655
Percentage of Revenues7.58.78.98.07.98.47.16.76.57.77.35.06.35.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.58.78.98.07.98.47.16.76.57.77.35.06.35.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CorporateAndOther


Revenuesus-gaap:
Period End2021-06-302021-03-312020-06-302020-03-31
Value88988999
Percentage of Revenues6.58.08.78.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.58.08.78.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateAndOther0.00.00.00.0

us-gaap:Revenues us-gaap:StatementBusinessSegments, us-gaap:Subsegments

us-gaap:AllOtherSegments, sndr:OtherInsurance


Revenuesus-gaap:
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value1122242022232020202020161213
Percentage of Revenues1.02.22.21.81.82.01.61.71.81.81.91.71.21.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.02.22.21.81.82.01.61.71.81.81.91.71.21.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AllOtherSegments sndr:OtherInsurance0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CorporateAndOther, sndr:OtherInsurance


Revenuesus-gaap:
Period End2021-06-302021-03-312020-06-302020-03-31
Value12182224
Percentage of Revenues0.91.52.22.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.91.52.22.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateAndOther sndr:OtherInsurance0.00.00.00.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value3767361335163853377737143660383138923871362435933493341233303302323729943054
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value15691513146015111471144614231638170717111492
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets41.741.941.539.239.038.938.942.843.944.241.2

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value3767361335163853377737143660383138923871362435933493341233303302323729943054
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-31
Value219820992055234223052268223621922185216021322053199219341890161615860.00.00.00.0
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0
Percentage of Assets58.358.158.560.861.061.161.157.256.155.858.857.157.056.756.849.049.00.00.00.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-31
Value0.60.10.8-0.4-1.00.1-0.5-0.2-0.3-1.0-1.1-0.2-0.60.00.40.460.00.00.00.0
Percentage of StockholdersEquity0.00.00.0-0.0-0.00.0-0.0-0.0-0.0-0.0-0.1-0.0-0.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.0-0.0-0.00.0-0.0-0.0-0.0-0.0-0.0-0.0-0.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-31
Value155915551552154815451543154215441546154415441539153715351534153515330.00.00.00.0
Percentage of StockholdersEquity70.974.175.566.167.068.169.070.570.871.572.475.077.279.481.295.096.70.00.00.00.0
Percentage of Assets41.443.044.140.240.941.642.140.339.739.942.642.844.045.046.146.547.40.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-31
Value63854450279376072569364863961558951545539935580520.00.00.00.0
Percentage of StockholdersEquity29.125.924.433.933.032.031.029.629.228.527.625.122.820.718.85.03.30.00.00.00.0
Percentage of Assets17.015.114.320.620.119.519.016.916.415.916.314.313.011.710.72.41.60.00.00.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value13981335122015831518145914051527142813651324130112611193109410601046877923
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets37.136.934.741.140.239.338.439.936.735.336.536.236.135.032.832.132.329.330.2

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-06-302016-03-312015-12-312014-12-31
Value4904723957687136005514373774413783593333002382022597913098153160149
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets13.013.111.219.918.916.215.111.49.711.410.410.09.68.87.26.18.02.64.30.00.00.00.0

Marketable Securities Current

us-gaap:MarketableSecuritiesCurrent

us-gaap:MarketableSecuritiesCurrent


Marketable
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value49494745464948474747514539404144454952
Percentage of MarketableSecuritiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.31.41.31.21.21.31.31.21.21.21.41.31.11.21.21.31.41.61.7

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value598560537489434475465498525536593588568530527500449435438
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets15.915.515.312.711.512.812.713.013.513.916.416.416.315.515.915.213.914.614.4

Inventory Net

us-gaap:InventoryNet

us-gaap:InventoryNet


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value22254457566071575749606070738394828774
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.71.31.51.51.62.01.51.51.31.71.72.02.12.52.82.62.92.4

us-gaap:InventoryNet us-gaap:PublicUtilitiesInventory

sndr:ReplacementParts


Inventory
Period End2020-12-312019-12-31
Value1011
Percentage of InventoryNet23.815.7
Percentage of Assets0.30.3
Percentage of Assets sndr:ReplacementParts0.00.0

sndr:TiresFuelAndOtherInventory


Inventory
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value0.91.31.31.51.2
Percentage of InventoryNet2.01.82.11.81.6
Percentage of Assets0.00.00.00.00.0
Percentage of Assets sndr:TiresFuelAndOtherInventory0.00.00.00.00.0

sndr:TractorsAndTrailingEquipmentInventory


Inventory
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value3359486960
Percentage of InventoryNet74.282.579.184.081.6
Percentage of Assets0.91.61.32.12.0
Percentage of Assets sndr:TractorsAndTrailingEquipmentInventory0.00.00.00.00.0

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent


Prepaid
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value10610877104125127117200147122799610811575959210480
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.83.02.22.73.33.43.25.23.83.22.22.73.13.42.32.92.93.52.6

Machinery And Equipment Gross

us-gaap:MachineryAndEquipmentGross

us-gaap:MachineryAndEquipmentGross


Machinery
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value289628582880287828412815279028142990297529002885280327712770274526772596
Percentage of MachineryAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets76.979.181.974.775.275.876.273.576.876.980.080.380.381.283.283.182.785.0

Assets Noncurrent

us-gaap:AssetsNoncurrent

us-gaap:AssetsNoncurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value2369227822952270225922552254230324632506230022922232221922362242219021172130
Percentage of AssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets62.963.165.358.959.860.761.660.163.364.763.563.863.965.067.267.967.770.769.8

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value326632253249324632073180315231653334331332353217313731223129310230352967
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets86.789.392.484.384.985.686.182.685.785.689.389.589.891.594.093.993.897.1

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value141414351417142313821342130012701318134413121300127512751271124212221209
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets37.539.740.336.936.636.135.533.233.934.736.236.236.537.438.237.637.839.6

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value1852179018311823182518371851189420151968192219171861184718581860181217471758
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets49.249.652.147.348.349.550.649.551.850.853.053.453.354.155.856.356.058.457.6

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value128128128127127127127127127162162164164165164164164164164
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.43.53.63.33.43.43.53.33.34.24.54.64.74.84.95.05.15.55.4

us-gaap:Goodwill us-gaap:StatementBusinessSegments

sndr:Logistics


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value14141414141414141414141414141414141414
Percentage of Goodwill11.111.111.111.111.211.211.111.211.18.78.88.68.68.68.68.68.68.68.6
Percentage of Assets0.40.40.40.40.40.40.40.40.40.40.40.40.40.40.40.40.40.50.5
Percentage of Assets sndr:Logistics0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

sndr:Truckload


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value103103103103103103103103103138138138138138138138138138138
Percentage of Goodwill80.780.980.981.181.481.481.381.481.285.185.284.284.083.683.984.084.184.284.2
Percentage of Assets2.72.92.92.72.72.82.82.72.73.63.83.84.04.04.14.24.34.64.5
Percentage of Assets sndr:Truckload0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AllOtherSegments


Goodwillus-gaap:
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value9.99.59.59.79.59.810.09.81112121212111111
Percentage of Goodwill7.87.57.57.67.57.76.26.07.27.47.87.57.47.37.27.1
Percentage of Assets0.30.30.30.30.20.30.30.30.30.30.40.40.40.40.40.4
Percentage of Assets us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CorporateAndOther


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-31
Value101010
Percentage of Goodwill8.28.08.0
Percentage of Assets0.30.30.3
Percentage of Assets us-gaap:CorporateAndOther0.00.00.0

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2020-12-312019-12-312019-09-302019-06-30
Value69757392
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0
Percentage of Assets2.02.11.92.4

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value2342132042001971781651551862378279767374767576
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.25.95.85.25.24.84.54.04.86.12.32.22.22.22.22.32.32.5

Dividends Payable Current

us-gaap:DividendsPayableCurrent

us-gaap:DividendsPayableCurrent


Dividends
Period End2020-12-312019-12-31
Value1210
Percentage of DividendsPayableCurrent100.0100.0
Percentage of Assets0.30.3

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value719667534516482474465698721650522557523492462499467598677
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets19.118.515.213.412.812.812.718.218.516.814.415.515.014.413.915.114.420.022.2

Long Term Debt Current

us-gaap:LongTermDebtCurrent us-gaap:DebtInstrument

us-gaap:LongTermDebtCurrent

sndr:UnsecuredSeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-31
Value10010040303055
Percentage of LongTermDebtCurrent100.0100.0100.0100.0100.0100.0
Percentage of Assets2.72.81.10.80.81.5
Percentage of Assets sndr:UnsecuredSeniorNotes0.00.00.00.00.00.0

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent us-gaap:BalanceSheetLocation

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OtherCurrentLiabilities


Operating
Period End2020-12-31
Value23
Percentage of OperatingLeaseLiabilityCurrent100.0
Percentage of Assets0.7
Percentage of Assets us-gaap:OtherCurrentLiabilities0.0

Other Accrued Liabilities Current

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:OtherAccruedLiabilitiesCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value1071178999108928594105114819376756958525957
Percentage of OtherAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.93.22.52.62.92.52.32.52.72.92.22.62.22.22.11.81.62.01.9

Liabilities Noncurrent

us-gaap:LiabilitiesNoncurrent

us-gaap:LiabilitiesNoncurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value84984692699498997195894098510619699839779859781186118311951190
Percentage of LiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets22.623.426.325.826.226.226.224.525.327.426.827.428.028.929.435.936.539.939.0

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value305360401402404405415416423429434436590684
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.79.810.510.310.511.211.611.912.412.913.113.519.722.4

us-gaap:LongTermDebt us-gaap:DebtInstrument

sndr:UnsecuredSeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value305305305305335335360400400400400400400400400400400500500
Percentage of LongTermDebt0.00.0100.00.00.00.0100.099.799.398.998.896.396.094.493.192.291.684.773.1
Percentage of Assets8.18.48.77.98.99.09.810.410.310.311.011.111.511.712.012.112.416.716.4
Percentage of Assets sndr:UnsecuredSeniorNotes0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent us-gaap:DebtInstrument

us-gaap:LongTermDebtNoncurrent

sndr:UnsecuredSeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value204204264304304304304
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.45.77.57.98.18.28.3
Percentage of Assets sndr:UnsecuredSeniorNotes0.00.00.00.00.00.00.0

Long Term Debt And Capital Lease Obligations

us-gaap:LongTermDebtAndCapitalLeaseObligations

us-gaap:LongTermDebtAndCapitalLeaseObligations


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-31
Value207207266306306306305304334334359412415417420422439
Percentage of LongTermDebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.55.77.68.08.18.28.48.08.68.69.911.511.912.212.612.814.4

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312017-12-31
Value469457450446451453449450386
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.512.712.811.612.012.212.312.411.6

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value76787999938085851009146494762687572100101
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.02.22.32.62.52.22.32.22.62.41.31.41.41.82.12.32.23.43.3

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent us-gaap:BalanceSheetLocation

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OtherNoncurrentLiabilities


Operating
Period End2020-12-31
Value51
Percentage of OperatingLeaseLiabilityNoncurrent100.0
Percentage of Assets1.5
Percentage of Assets us-gaap:OtherNoncurrentLiabilities0.0

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-31
Value17
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0
Percentage of Assets0.5

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-31
Value14
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0
Percentage of Assets0.4

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-31
Value10
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0
Percentage of Assets0.3

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-31
Value7200000.0
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 End2020-12-31
Value5400000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets0.2

Operating Lease Liability

us-gaap:OperatingLeaseLiability us-gaap:BalanceSheetLocation

us-gaap:OperatingLeaseLiability

us-gaap:OtherLiabilities


Operating
Period End2020-12-312019-12-31
Value7482
Percentage of OperatingLeaseLiability100.0100.0
Percentage of Assets2.12.3
Percentage of Assets us-gaap:OtherLiabilities0.00.0

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-31
Value80
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0
Percentage of Assets2.3

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-31
Value6100000.0
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets0.2

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-31
Value219820992055234223052268223621922185216021322053199219341890161615860.00.00.00.0
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0
Percentage of Assets58.358.158.560.861.061.161.157.256.155.858.857.157.056.756.849.049.00.00.00.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-31
Value0.60.10.8-0.4-1.00.1-0.5-0.2-0.3-1.0-1.1-0.2-0.60.00.40.460.00.00.00.0
Percentage of StockholdersEquity0.00.00.0-0.0-0.00.0-0.0-0.0-0.0-0.0-0.1-0.0-0.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.0-0.0-0.00.0-0.0-0.0-0.0-0.0-0.0-0.0-0.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-31
Value155915551552154815451543154215441546154415441539153715351534153515330.00.00.00.0
Percentage of StockholdersEquity70.974.175.566.167.068.169.070.570.871.572.475.077.279.481.295.096.70.00.00.00.0
Percentage of Assets41.443.044.140.240.941.642.140.339.739.942.642.844.045.046.146.547.40.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-31
Value63854450279376072569364863961558951545539935580520.00.00.00.0
Percentage of StockholdersEquity29.125.924.433.933.032.031.029.629.228.527.625.122.820.718.85.03.30.00.00.00.0
Percentage of Assets17.015.114.320.620.119.519.016.916.415.916.314.313.011.710.72.41.60.00.00.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital

us-gaap:AdditionalPaidInCapital

us-gaap:AdditionalPaidInCapital


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value155915551552154815451543154215441546154415441539153715351534153515330.0
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets41.443.044.140.240.941.642.140.339.739.942.642.844.045.046.146.547.40.0

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value638544502793760725693648639615589515455399355805213125
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets17.015.114.320.620.119.519.016.916.415.916.314.313.011.710.72.41.60.44.1

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value600000.0100000.0800000.0-400000.0-1000000.0100000.0-500000.0-200000.0-300000.0-1000000.0-1100000.0-200000.0-600000.00400000.0460000.0899000.0883000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0
Percentage of Assets0.00.00.0-0.0-0.00.0-0.0-0.0-0.0-0.0-0.0-0.0-0.00.00.00.00.00.0

Stock Issued During Period Value New Issues

us-gaap:StockIssuedDuringPeriodValueNewIssues

us-gaap:StockIssuedDuringPeriodValueNewIssues


Stock
Period End2021-06-302021-03-312020-06-302020-03-312019-09-302019-06-302018-06-302018-03-312017-09-302017-06-30
Value0.70.10.10.10.10.20.30.2340340
Percentage of StockIssuedDuringPeriodValueNewIssues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.0

us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-06-302020-03-312019-09-302019-06-302018-06-302018-03-312017-09-302017-06-30
Value0.70.10.10.10.10.20.30.2340340
Percentage of StockIssuedDuringPeriodValueNewIssues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.0

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

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value3.34.52.21.11.9-2.21.62.02.12.12.06.34.613
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value3.34.52.21.11.9-2.21.62.02.12.12.06.34.613
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value153101149149195124166168168133156155155100145891378913752
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.38.211.813.118.911.114.414.213.911.211.812.112.58.812.28.012.88.912.95.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-123000000.0-11900000.0-155700000.0-52900000.0-70400000.0-39700000.05400000.0-96200000.0-200200000.0-59200000.0-115500000.0-116200000.0-83300000.0-22600000.0-95200000.0-133730000.0-123570000.0-38000000.0-71300000.0-134540000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-9.0-1.0-12.3-4.7-6.8-3.50.5-8.1-16.5-5.0-8.7-9.1-6.7-2.0-8.0-12.0-11.5-3.8-6.7-12.8

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-12.6-12.5-366.4-41.7-11.7-35.8-56.9-12.7-31.9-11.7-22.0-12.8-38.1-15.8-14.1-13.023166-102.7-20.768
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.9-1.0-29.0-3.7-1.1-3.2-4.9-1.1-2.6-1.0-1.7-1.0-3.1-1.4-1.2-1.215.5-10.2-1.96.5

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1876-373.0541134911459-63.362
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.36.2-29.54.811.04.49.95.0-5.25.2

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value117.74.5-5.6-1.74.54.1-2.4-9.27.3276.71314-200.812211526331.52214
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Payable

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsPayable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value12286.937-6.518-35.62.8-14.512-32.6-1.32115-6.120-8.10310-6.9-12.016134.328
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value153101149149195124166168168133156155155100145891378913752
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.38.211.813.118.911.114.414.213.911.211.812.112.58.812.28.012.88.912.95.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value1065476444643551934368470654728336462247364428
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.84.56.13.94.53.94.81.72.83.16.45.55.34.223.83.34.32.24.53.54.43.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value106544446431934367065478346
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0226.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.84.53.94.53.91.72.83.15.55.34.27.54.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value2.9999999999999995.23.52.01.02.4-7.0-2.6-0.16.17.54.94.55.91.74.25.55.6
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-123000000.0-11900000.0-155700000.0-52900000.0-70400000.0-39700000.05400000.0-96200000.0-200200000.0-59200000.0-115500000.0-116200000.0-83300000.0-22600000.0-95200000.0-133730000.0-123570000.0-38000000.0-71300000.0-134540000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-9.0-1.0-12.3-4.7-6.8-3.50.5-8.1-16.5-5.0-8.7-9.1-6.7-2.0-8.0-12.0-11.5-3.8-6.7-12.8

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value1341914348612226771815011712598441141111233962146
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-12.6-12.5-366.4-41.7-11.7-35.8-56.9-12.7-31.9-11.7-22.0-12.8-38.1-15.8-14.1-13.023166-102.7-20.768
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.9-1.0-29.0-3.7-1.1-3.2-4.9-1.1-2.6-1.0-1.7-1.0-3.1-1.4-1.2-1.215.5-10.2-1.96.5

Payments Of Dividends

us-gaap:PaymentsOfDividends

us-gaap:PaymentsOfDividends


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value1212366111110101010101010108.88.98.7840.0167.8310.0
Percentage of PaymentsOfDividends100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


Effective
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value25.424.7-0.426.00.2580.2490.0050.2620.2480.2540.0040.2580.2550.262-0.8680.3920.3770.405-0.0010.4290.40.4
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

sndr:NonQualifiedStockOptions


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value685900.0537250.0369000.0229620.00
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber100.0100.0100.0100.00.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

sndr:NonQualifiedStockOptions


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value20.622.2822.6319.00
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.00.0

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value450449450386538
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value4648353644
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value4300000.04300000.03300000.02800000.02400000.02000000.02900000.0
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value2600000.02000000.05800000.04400000.02800000.0
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0

sndr:EquitySecuritiesWithoutReadilyDeterminableFairValueCurrentPeriodAmount us-gaap:Ownership

sndr:EquitySecuritiesWithoutReadilyDeterminableFairValueCurrentPeriodAmount

sndr:TuSimpleLimited


Equity
Period End2021-01-12
Value5000000.0
Percentage of EquitySecuritiesWithoutReadilyDeterminableFairValueCurrentPeriodAmount100.0

sndr:EquitySecuritiesWithoutReadilyDeterminableFairValueCurrentPeriodAmount us-gaap:Ownership, us-gaap:SubsequentEventType

sndr:MasteryLogistics, us-gaap:SubsequentEvent


Equity
Period End2020-10-14
Value5000000.0
Percentage of EquitySecuritiesWithoutReadilyDeterminableFairValueCurrentPeriodAmount0.0

sndr:TuSimpleLimited, us-gaap:SubsequentEvent


Equity
Period End2021-01-12
Value5000000.0
Percentage of EquitySecuritiesWithoutReadilyDeterminableFairValueCurrentPeriodAmount100.0

sndr:Proceedsfromsaleofoffleaseinventory

sndr:Proceedsfromsaleofoffleaseinventory


Proceedsfromsaleofoffleaseinventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4.74.44.88.95.04.05.75.05.14.921-7.84.73.1
Percentage of Proceedsfromsaleofoffleaseinventory100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sndr:PurchasedTransportation

sndr:PurchasedTransportation


Purchased
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value649558580501437479507511503473
Percentage of PurchasedTransportation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sndr:Revenuesexcludingfuelsurcharge us-gaap:StatementBusinessSegments

sndr:Revenuesexcludingfuelsurcharge

sndr:Intermodal


Revenuesexcludingfuelsurchargeus-gaap:
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value274255248219238249259237252227201196194181
Percentage of Revenuesexcludingfuelsurcharge100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sndr:Logistics


Revenuesexcludingfuelsurchargeus-gaap:
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value430355284230239236227243268249220209191183
Percentage of Revenuesexcludingfuelsurcharge157.2139.1114.5105.4100.794.787.4102.7106.6109.6109.9106.798.7101.5

sndr:Truckload


Revenuesexcludingfuelsurchargeus-gaap:
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value475451460451469515534531565568551551543522
Percentage of Revenuesexcludingfuelsurcharge173.4176.6185.3206.0197.2206.9205.9223.8224.1249.5274.3281.5279.5288.3

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation


Adjustments
Period End2021-03-312020-03-312019-03-312018-09-302018-06-302018-03-31
Value2400000.0900000.01200000.0400000.0100000.01800000.0
Percentage of AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-03-312020-03-312019-03-312018-09-302018-06-302018-03-31
Value2400000.0900000.01200000.0400000.0100000.01800000.0
Percentage of AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableRecoveries

us-gaap:AllowanceForDoubtfulAccountsReceivableRecoveries


Allowance
Period End2020-12-312020-09-302020-06-30
Value0200000.00
Percentage of AllowanceForDoubtfulAccountsReceivableRecoveries0.0100.00.0

us-gaap:AllowanceForDoubtfulAccountsReceivableWriteOffs

us-gaap:AllowanceForDoubtfulAccountsReceivableWriteOffs


Allowance
Period End2020-12-312020-09-302020-06-30
Value100000.0600000.0400000.0
Percentage of AllowanceForDoubtfulAccountsReceivableWriteOffs100.0100.0100.0

us-gaap:CapitalExpendituresIncurredButNotYetPaid

us-gaap:CapitalExpendituresIncurredButNotYetPaid


Capital
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value2922-49.629-10.2313.6-31.2-25.572-34.45.0-2.333-47.98.0351435-17.6-26.6711.5865
Percentage of CapitalExpendituresIncurredButNotYetPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockDividendsPerShareDeclared us-gaap:Dividends, us-gaap:StatementClassOfStock

us-gaap:CommonStockDividendsPerShareDeclared

sndr:SpecialDividend, us-gaap:CommonClassA


Common
Period End2020-10-26
Value2.0
Percentage of CommonStockDividendsPerShareDeclared100.0

sndr:SpecialDividend, us-gaap:CommonClassB


Common
Period End2020-10-26
Value2.0
Percentage of CommonStockDividendsPerShareDeclared100.0

us-gaap:CommonStockDividendsPerShareDeclared us-gaap:Dividends, us-gaap:StatementClassOfStock, us-gaap:SubsequentEventType

sndr:QuarterlyDividendDeclared, us-gaap:CommonClassB, us-gaap:SubsequentEvent


Common
Period End2021-07-262021-04-262020-10-26
Value0.070.070.065
Percentage of CommonStockDividendsPerShareDeclared0.00.03.2

sndr:SpecialDividendDeclared, us-gaap:CommonClassA, us-gaap:SubsequentEvent


Common
Period End2020-10-26
Value2.0
Percentage of CommonStockDividendsPerShareDeclared100.0

sndr:SpecialDividendDeclared, us-gaap:CommonClassB, us-gaap:SubsequentEvent


Common
Period End2020-10-26
Value2.0
Percentage of CommonStockDividendsPerShareDeclared100.0

us-gaap:CommonStockDividendsPerShareDeclared us-gaap:StatementClassOfStock

us-gaap:CommonClassA


Common
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value0.070.070.0650.0650.0650.060.060.06
Percentage of CommonStockDividendsPerShareDeclared0.00.00.00.00.00.00.00.0

us-gaap:CommonClassB


Common
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value0.070.070.0650.0650.0650.060.060.06
Percentage of CommonStockDividendsPerShareDeclared0.00.00.00.00.00.00.00.0

us-gaap:CommonStockDividendsPerShareDeclared us-gaap:StatementClassOfStock, us-gaap:SubsequentEventType

us-gaap:CommonClassA, us-gaap:SubsequentEvent


Common
Period End2021-01-282020-07-312020-04-302019-01-312018-09-302018-06-302018-01-312017-12-312017-07-31
Value0.070.0650.0650.060.060.060.060.050.05
Percentage of CommonStockDividendsPerShareDeclared0.00.00.00.00.00.00.00.00.0

us-gaap:CommonClassB, us-gaap:SubsequentEvent


Common
Period End2021-01-282020-07-312020-04-302018-01-31
Value0.070.0650.0650.05
Percentage of CommonStockDividendsPerShareDeclared0.00.00.00.0

us-gaap:CostOfGoodsSoldSalesTypeLease

us-gaap:CostOfGoodsSoldSalesTypeLease


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value46505045404833464749
Percentage of CostOfGoodsSoldSalesTypeLease100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepreciationAndAmortization

us-gaap:DepreciationAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value73737474726970747473747371717270686768706363
Percentage of DepreciationAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepreciationAndAmortization us-gaap:StatementBusinessSegments

sndr:Intermodal


Depreciation
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value1111111110111110109.59.28.88.4548.07.86.205
Percentage of DepreciationAndAmortization15.815.716.016.215.515.214.714.914.113.212.812.512.311.811.19.7

sndr:Logistics


Depreciation
Period End2021-06-302020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value0.10.10.00.00.20.20.10.10.10.10.10.0990.10.10.098
Percentage of DepreciationAndAmortization0.10.10.00.00.30.30.10.10.10.10.10.10.10.10.2

sndr:Truckload


Depreciation
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value52525352515354535252525150505046
Percentage of DepreciationAndAmortization71.672.072.272.673.171.873.372.871.872.673.273.373.774.372.173.2

us-gaap:AllOtherSegments


Depreciation
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value8.68.18.09.48.89.010109.99.99.4859.41110
Percentage of DepreciationAndAmortization11.611.211.512.711.712.314.114.013.814.013.813.916.616.9

us-gaap:CorporateAndOther


Depreciation
Period End2021-06-302021-03-312020-06-302020-03-31
Value9.19.08.18.0
Percentage of DepreciationAndAmortization12.412.311.211.5

us-gaap:DividendsCash

us-gaap:DividendsCash


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value1212111111101110101010
Percentage of DividendsCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCash us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value1212111111101110101010
Percentage of DividendsCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash us-gaap:Dividends

us-gaap:DividendsCommonStockCash

sndr:SpecialDividend


Dividends
Period End2020-11-19
Value354
Percentage of DividendsCommonStockCash100.0

us-gaap:EquitySecuritiesFvNiUnrealizedGain us-gaap:InvestmentType

us-gaap:EquitySecuritiesFvNiUnrealizedGain

sndr:TuSimpleLimited


Equity
Period End2021-06-30
Value20
Percentage of EquitySecuritiesFvNiUnrealizedGain100.0

us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueUpwardPriceAdjustmentAnnualAmount us-gaap:Ownership

us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueUpwardPriceAdjustmentAnnualAmount

sndr:PlatformScienceInc.


Equity
Period End2020-12-312020-09-302020-06-302020-03-31
Value002700000.06100000.0
Percentage of EquitySecuritiesWithoutReadilyDeterminableFairValueUpwardPriceAdjustmentAnnualAmount0.00.0100.0100.0

us-gaap:FinanceLeaseInterestPaymentOnLiability

us-gaap:FinanceLeaseInterestPaymentOnLiability


Finance
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0100000.0000100000.00100000.0
Percentage of FinanceLeaseInterestPaymentOnLiability0.0100.00.00.00.0100.00.0100.0

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FinanceLeasePrincipalPayments


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value100000.0200000.0100000.0200000.0100000.0200000.04900000.0700000.0600000.0700000.0
Percentage of FinanceLeasePrincipalPayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FuelCosts

us-gaap:FuelCosts


Fuel
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value70635149426068707674848788848476717368666453
Percentage of FuelCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnSaleOfPropertyPlantEquipment

us-gaap:GainLossOnSaleOfPropertyPlantEquipment


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value141.9-0.8-1.6-1.0-2.80.7-0.1-0.12.83.92.50.80.93.00.2862.9053.2093.24.1237.163.817
Percentage of GainLossOnSaleOfPropertyPlantEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GoodwillForeignCurrencyTranslationGainLoss

us-gaap:GoodwillForeignCurrencyTranslationGainLoss


Goodwill
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value400000.0400000.00-200000.0200000.0-300000.0-200000.0200000.00-400000.0-700000.0500000.0300000.0233000.0382000.0-115000.0
Percentage of GoodwillForeignCurrencyTranslationGainLoss100.0100.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GoodwillForeignCurrencyTranslationGainLoss us-gaap:StatementBusinessSegments

us-gaap:AllOtherSegments


Goodwill
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value400000.00-200000.0200000.0-300000.0-200000.0200000.00-400000.0-700000.0500000.0300000.0233000.0382000.0-115000.0
Percentage of GoodwillForeignCurrencyTranslationGainLoss100.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ImpairmentOfLongLivedAssetsToBeDisposedOf

us-gaap:ImpairmentOfLongLivedAssetsToBeDisposedOf


Impairment
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.40.01.92.02.5110.30.00.0
Percentage of ImpairmentOfLongLivedAssetsToBeDisposedOf100.00.0100.0100.0100.0100.0100.00.00.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-1.251-17.6-3.66.629-27.8-7.6-71.1109-6.933-42.124-10.9-2.349-8.66320-2.8-6.285-8.14822
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2.200000000000001-10.47.11732-5.9-4.0-17.717-41.7
Percentage of IncreaseDecreaseInOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInReceivables

us-gaap:IncreaseDecreaseInReceivables


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value38224851-41.97.2-37.7-16.0-19.3-46.99.12839-1.725546.402-21.428-1.13615-51.824
Percentage of IncreaseDecreaseInReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInRiskManagementAssetsAndLiabilities

us-gaap:IncreaseDecreaseInRiskManagementAssetsAndLiabilities


Increase
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value12-8.0000000000000023.0-11.6115.04.6-8.5
Percentage of IncreaseDecreaseInRiskManagementAssetsAndLiabilities100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements


Incremental
Period End2021-06-302021-03-312020-06-302020-03-31
Value300000.0400000.0200000.0300000.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.0100.0100.0

us-gaap:InterestIncomeOther

us-gaap:InterestIncomeOther


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value400000.0800000.0400000.0600000.0500000.01800000.01900000.02000000.02400000.02200000.01700000.01500000.0700000.0700000.0
Percentage of InterestIncomeOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestPaid

us-gaap:InterestPaid


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value1.64.21.54.71.84.82.15.12.25.12.35.42.45.42.65.5265.0186.0566.94.6314.9995.07
Percentage of InterestPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LaborAndRelatedExpense

us-gaap:LaborAndRelatedExpense


Labor
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value275267275259247264249257286313316317314311313307304297281289280277
Percentage of LaborAndRelatedExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingInsuranceAndClaimsCostsProduction

us-gaap:OperatingInsuranceAndClaimsCostsProduction


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value17241117282931242528322422232622202132191818
Percentage of OperatingInsuranceAndClaimsCostsProduction100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeasePayments

us-gaap:OperatingLeasePayments


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value7.57.88.49.08.78.68.69.08.98.8
Percentage of OperatingLeasePayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value500000.0-700000.0800000.0400000.0600000.0-1100000.0600000.0-300000.0100000.0700000.0100000.0-900000.0400000.0-600000.0-400000.00-439000.016000.0-300000.0-100000.0390000.0442000.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value200000.0-600000.00-100000.0500000.0-300000.0400000.00300000.0400000.0
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax100.0100.00.0100.0100.0100.0100.00.0100.0100.0

us-gaap:OtherGeneralExpense

us-gaap:OtherGeneralExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value32292826222925272834313540362931152826252425
Percentage of OtherGeneralExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoncashIncomeExpense

us-gaap:OtherNoncashIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-200000.0-1400000.0-700000.0-600000.02100000.04900000.0-500000.0-1100000.0-1500000.0-300000.0400000.0-100000.0400000.02800000.03800000.0-1484000.0-1697000.081000.0400000.0339000.0765000.0-104000.0
Percentage of OtherNoncashIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForRestructuring

us-gaap:PaymentsForRestructuring


Payments
Period End2020-09-302020-06-302020-03-312019-12-312019-09-30
Value300000.0300000.0900000.013800000.0-5200000.0
Percentage of PaymentsForRestructuring100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireAdditionalInterestInSubsidiaries

us-gaap:PaymentsToAcquireAdditionalInterestInSubsidiaries


Payments
Period End2021-06-302021-03-312020-12-31
Value0.05.05.4
Percentage of PaymentsToAcquireAdditionalInterestInSubsidiaries0.0100.0100.0

us-gaap:PaymentsToAcquireEquipmentOnLease

us-gaap:PaymentsToAcquireEquipmentOnLease


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value2511312115266.0192418322320132037282319222718
Percentage of PaymentsToAcquireEquipmentOnLease100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireMarketableSecurities

us-gaap:PaymentsToAcquireMarketableSecurities


Payments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value2.19.58.01.07.92.15.01.4
Percentage of PaymentsToAcquireMarketableSecurities100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireOtherProductiveAssets

us-gaap:PaymentsToAcquireOtherProductiveAssets


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value129.81113121218171411
Percentage of PaymentsToAcquireOtherProductiveAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromLeasePayments

us-gaap:ProceedsFromLeasePayments


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value18171517171819192020
Percentage of ProceedsFromLeasePayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleAndMaturityOfMarketableSecurities

us-gaap:ProceedsFromSaleAndMaturityOfMarketableSecurities


Proceeds
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value2.56.19.04.06.28.92.24.96.16.02.01.00.92.11.1684.1313.1010.08.0041.02.096
Percentage of ProceedsFromSaleAndMaturityOfMarketableSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value44323125101951121411152721261817191512151310
Percentage of ProceedsFromSaleOfPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForDoubtfulAccounts

us-gaap:ProvisionForDoubtfulAccounts


Provision
Period End2020-12-312020-09-302020-06-30
Value-100000.0100000.0800000.0
Percentage of ProvisionForDoubtfulAccounts100.0100.0100.0

us-gaap:RepaymentsOfDebtAndCapitalLeaseObligations

us-gaap:RepaymentsOfDebtAndCapitalLeaseObligations


Repayments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0.10.20.1300.225462.12.51.1112.28.17.05.23.7491049.892-9.624120.892
Percentage of RepaymentsOfDebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringCharges

us-gaap:RestructuringCharges


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1.50.50.2-1.213500.00.00.00.0
Percentage of RestructuringCharges100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:RestructuringCharges us-gaap:RestructuringCostAndReserve, us-gaap:StatementBusinessSegments

sndr:ImpairmentCharges, sndr:Truckload


Restructuring
Period End2020-09-302020-06-302020-03-312019-09-30
Value0.20.3-1.135
Percentage of RestructuringCharges40.0150.091.770.8

sndr:Othercosts, sndr:Truckload


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-0.10.30.10.56.67.1
Percentage of RestructuringCharges-6.760.050.0-41.749.614.1

sndr:Receivableswritedown, sndr:Truckload


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-0.10.0-0.2-0.6-3.77.6
Percentage of RestructuringCharges-6.70.0-100.050.0-27.815.1

us-gaap:RestructuringCharges us-gaap:StatementBusinessSegments

sndr:Truckload


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1.50.50.2-1.21350
Percentage of RestructuringCharges100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringCostsAndAssetImpairmentCharges

us-gaap:RestructuringCostsAndAssetImpairmentCharges


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1.70.20.3-1.16.7430.00.00.0
Percentage of RestructuringCostsAndAssetImpairmentCharges100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability


Right
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value01200000.00100000.0400000.0300000.000
Percentage of RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability0.0100.00.0100.0100.0100.00.00.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability


Right
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value4.9142.10.0147.48.8-8.11711
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:SalesTypeLeaseInterestIncomeLeaseReceivable

us-gaap:SalesTypeLeaseInterestIncomeLeaseReceivable


Sales
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value7.87.36.86.56.76.56.97.06.86.6
Percentage of SalesTypeLeaseInterestIncomeLeaseReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SalesTypeLeaseRevenue

us-gaap:SalesTypeLeaseRevenue


Sales
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value53585650445436505256
Percentage of SalesTypeLeaseRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SalesTypeLeaseSellingProfitLoss

us-gaap:SalesTypeLeaseSellingProfitLoss


Sales
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value7.18.46.05.03.95.83.14.15.46.3
Percentage of SalesTypeLeaseSellingProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType, us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

sndr:PerformanceSharesAndPerformanceShareUnits, sndr:A2017OmnibusIncentivePlan


Share
Period End2021-03-31
Value24.45
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.0

sndr:RestrictedSharesAndRestrictedStockUnits, sndr:A2017OmnibusIncentivePlan


Share
Period End2021-03-31
Value22.63
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue92.6

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType, us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

sndr:NonQualifiedStockOption, sndr:A2017OmnibusIncentivePlan


Share
Period End2021-03-31
Value5.86
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised


Stock
Period End2021-03-312020-09-302020-06-302018-06-30
Value700000.01200000.0400000.0200000.0
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-03-312020-09-302020-06-302018-06-30
Value700000.01200000.0400000.0200000.0
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.0100.0100.0

us-gaap:WeightedAverageNumberOfSharesRestrictedStock

us-gaap:WeightedAverageNumberOfSharesRestrictedStock


Weighted
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value300000.0200000.0300000.00200000.0300000.0400000.00200000.0200000.0300000.0100000.0100000.029000.0381000.00200000.0130000.0109000.0
Percentage of WeightedAverageNumberOfSharesRestrictedStock100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0

dei:EntityCommonStockSharesOutstanding us-gaap:StatementClassOfStock

dei:EntityCommonStockSharesOutstanding

us-gaap:CommonClassB


Entity
Period End2021-07-232021-04-232020-10-232020-07-242020-04-242020-02-182019-10-252019-07-262019-04-262019-02-192018-10-262018-06-302018-03-312018-02-222017-09-302017-07-282017-05-11
Value9494949494949494949393939493939393
Percentage of EntityCommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sndr:AccountsReceivableAllowanceForCreditLossAndRevenueAdjustmentsCurrent

sndr:AccountsReceivableAllowanceForCreditLossAndRevenueAdjustmentsCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value4100000.03600000.03700000.03300000.03700000.03400000.0
Percentage of AccountsReceivableAllowanceForCreditLossAndRevenueAdjustmentsCurrent100.0100.0100.0100.0100.0100.0

sndr:AssetsHeldforsale

sndr:AssetsHeldforsale


Assets
Period End2020-12-312019-12-312018-12-31
Value186721
Percentage of AssetsHeldforsale100.0100.0100.0

sndr:AssetsHeldforsale us-gaap:RestructuringPlan

sndr:FTFMserviceofferingshutdown


Assets
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value1.614232733
Percentage of AssetsHeldforsale8.50.00.00.049.6

sndr:AssetsHeldforsale us-gaap:StatementBusinessSegments

sndr:Intermodal


Assets
Period End2020-12-312019-12-312018-12-31
Value1.93.92.4
Percentage of AssetsHeldforsale10.15.811.0

sndr:Truckload


Assets
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value162340476311919
Percentage of AssetsHeldforsale89.90.00.00.094.20.089.0

sndr:DeferredTaxAssetsLeasingArrangements

sndr:DeferredTaxAssetsLeasingArrangements


Deferred
Period End2020-12-312019-12-312018-12-31
Value18200.0
Percentage of DeferredTaxAssetsLeasingArrangements100.0100.00.0

sndr:DeferredTaxAssetsOperatingLossCarryforwardsAndTaxCreditCarryforwards

sndr:DeferredTaxAssetsOperatingLossCarryforwardsAndTaxCreditCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1112181714
Percentage of DeferredTaxAssetsOperatingLossCarryforwardsAndTaxCreditCarryforwards100.0100.0100.0100.0100.0

sndr:FinanceLeaseRightOfUseAssetGross us-gaap:PropertyPlantAndEquipmentByType

sndr:FinanceLeaseRightOfUseAssetGross

srt:OtherProperty


Finance
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value2.72.61.51.51.50.6
Percentage of FinanceLeaseRightOfUseAssetGross100.0100.0100.0100.0100.0100.0

us-gaap:Building


Finance
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value0.70.80.80.80.80.8
Percentage of FinanceLeaseRightOfUseAssetGross25.930.853.353.353.3133.3

sndr:LandBuildingsAndImprovements

sndr:LandBuildingsAndImprovements


Land
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value2032012022012011991991891821781771751741741831831827170
Percentage of LandBuildingsAndImprovements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sndr:LesseeLeaseNotYetCommencedAmount

sndr:LesseeLeaseNotYetCommencedAmount


Lessee
Period End2020-12-31
Value7000000.0
Percentage of LesseeLeaseNotYetCommencedAmount100.0

sndr:LongtermDebtandFinanceLeaseObligationNoncurrent

sndr:LongtermDebtandFinanceLeaseObligationNoncurrent


Longterm
Period End2020-12-312019-12-312018-12-31
Value266305359
Percentage of LongtermDebtandFinanceLeaseObligationNoncurrent100.0100.0100.0

sndr:LongtermDebtandFinanceLeaseObligationsCurrent

sndr:LongtermDebtandFinanceLeaseObligationsCurrent


Longterm
Period End2020-12-312019-12-312018-12-31
Value405551
Percentage of LongtermDebtandFinanceLeaseObligationsCurrent100.0100.0100.0

sndr:OperatingLeaseOptiontoExtendReasonablyCertain

sndr:OperatingLeaseOptiontoExtendReasonablyCertain


Operating
Period End2020-12-31
Value2300000.0
Percentage of OperatingLeaseOptiontoExtendReasonablyCertain100.0

sndr:SalestypeLeaseUnearnedIncome

sndr:SalestypeLeaseUnearnedIncome


Salestype
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value44423834333330
Percentage of SalestypeLeaseUnearnedIncome100.0100.0100.0100.0100.0100.0100.0

sndr:SalestypeLeasesLeaseReceivableCurrent

sndr:SalestypeLeasesLeaseReceivableCurrent


Salestype
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value9797110119122126123127129
Percentage of SalestypeLeasesLeaseReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0

sndr:ShareBasedCompensationArrangementOptionsAndEquityInstrumentsOtherThanOptionsGrantsInPeriodFairValue us-gaap:PlanName

sndr:ShareBasedCompensationArrangementOptionsAndEquityInstrumentsOtherThanOptionsGrantsInPeriodFairValue

sndr:A2017OmnibusIncentivePlan


Share
Period End2021-03-31
Value19
Percentage of ShareBasedCompensationArrangementOptionsAndEquityInstrumentsOtherThanOptionsGrantsInPeriodFairValue100.0

us-gaap:AccountsPayableTradeCurrent

us-gaap:AccountsPayableTradeCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value337295245288221238207239268308226293289270230284256246222
Percentage of AccountsPayableTradeCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedInsuranceCurrent

us-gaap:AccruedInsuranceCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value6757363942444219219579586462544847545452
Percentage of AccruedInsuranceCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedInsuranceCurrentAndNoncurrent

us-gaap:AccruedInsuranceCurrentAndNoncurrent


Accrued
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value144143156147160
Percentage of AccruedInsuranceCurrentAndNoncurrent100.0100.0100.0100.0100.0

us-gaap:AccruedInsuranceNoncurrent

us-gaap:AccruedInsuranceNoncurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value971021291421381321181031011761139897103102100107108111
Percentage of AccruedInsuranceNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AllowanceForDoubtfulAccountsReceivable


Allowance
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value900000.01100000.01400000.01000000.0900000.0
Percentage of AllowanceForDoubtfulAccountsReceivable100.0100.0100.0100.0100.0

us-gaap:AssetsHeldForSaleLongLivedFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:AssetsHeldForSaleLongLivedFairValueDisclosure

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsNonrecurring


Assets
Period End2020-12-312019-12-31
Value1.88.1
Percentage of AssetsHeldForSaleLongLivedFairValueDisclosure100.0100.0

us-gaap:AssetsHeldForSaleLongLivedFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:RestructuringPlan

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsNonrecurring, sndr:FTFMserviceofferingshutdown


Assets
Period End2020-12-312019-12-31
Value1.418
Percentage of AssetsHeldForSaleLongLivedFairValueDisclosure77.8228.4

us-gaap:AssetsHeldForSaleNotPartOfDisposalGroup

us-gaap:AssetsHeldForSaleNotPartOfDisposalGroup


Assets
Period End2020-12-312019-12-31
Value1734
Percentage of AssetsHeldForSaleNotPartOfDisposalGroup100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312017-12-31
Value484945444548475141
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:FinancialInstrument

us-gaap:CorporateDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312018-12-312017-12-31
Value2122212015159.1
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis43.946.346.645.731.929.321.7

us-gaap:USStatesAndPoliticalSubdivisions


Available
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312018-12-312017-12-31
Value10101110111222
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis21.221.025.923.424.524.254.2

us-gaap:USTreasuryAndGovernment


Available
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312018-12-312017-12-31
Value1616121316206.0
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis34.832.727.530.934.938.814.3

us-gaap:AvailableForSaleSecuritiesDebtSecurities

us-gaap:AvailableForSaleSecuritiesDebtSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-312018-12-312017-12-31
Value454649485141
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:BalanceSheetLocation

sndr:CurrentAsset


Available
Period End2021-06-302021-03-312020-12-312019-12-31
Value49494748
Percentage of AvailableForSaleSecuritiesDebtSecurities0.00.00.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:BalanceSheetLocation, us-gaap:FinancialInstrument

sndr:CurrentAsset, us-gaap:CorporateDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value2123222118181515
Percentage of AvailableForSaleSecuritiesDebtSecurities0.00.00.046.338.737.631.929.2

sndr:CurrentAsset, us-gaap:USStatesAndPoliticalSubdivisions


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value1010121011111112
Percentage of AvailableForSaleSecuritiesDebtSecurities0.00.00.023.525.424.024.424.4

sndr:CurrentAsset, us-gaap:USTreasuryAndGovernment


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value1615121312141719
Percentage of AvailableForSaleSecuritiesDebtSecurities0.00.00.030.327.430.335.238.6

us-gaap:CapitalizedContractCostNet

us-gaap:CapitalizedContractCostNet


Capitalized
Period End2020-12-312019-12-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value4100000.04200000.05000000.06100000.04500000.04400000.03700000.0
Percentage of CapitalizedContractCostNet100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerAssetGross

us-gaap:ContractWithCustomerAssetGross


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-01-01
Value32322128221721
Percentage of ContractWithCustomerAssetGross100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiability

us-gaap:ContractWithCustomerLiability


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312018-01-01
Value600000.0600000.0700000.0600000.0000000001100000.08300000.00
Percentage of ContractWithCustomerLiability100.0100.0100.0100.00.00.00.00.00.00.00.00.0100.0100.00.0

us-gaap:DebtInstrumentFairValue us-gaap:DebtInstrument, us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:DebtInstrumentFairValue

sndr:UnsecuredSeniorNotes, us-gaap:FairValueInputsLevel2


Debt
Period End2021-06-302021-03-312020-12-31
Value321321316
Percentage of DebtInstrumentFairValue100.0100.0100.0

us-gaap:DebtInstrumentFairValue us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2


Debt
Period End2020-12-312020-09-302019-12-31
Value316318368
Percentage of DebtInstrumentFairValue100.00.00.0

us-gaap:DeferredCompensationCashbasedArrangementsLiabilityCurrentAndNoncurrent us-gaap:DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensation, us-gaap:PlanName

us-gaap:DeferredCompensationCashbasedArrangementsLiabilityCurrentAndNoncurrent

us-gaap:DeferredBonus, sndr:A2005SchneiderNationalIncLongTermIncentivePlan


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value8.88.68.68.87.5
Percentage of DeferredCompensationCashbasedArrangementsLiabilityCurrentAndNoncurrent100.0100.0100.0100.0100.0

us-gaap:DeferredBonus, sndr:A2011OmnibusLongtermIncentivePlan


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value2.96.3222518
Percentage of DeferredCompensationCashbasedArrangementsLiabilityCurrentAndNoncurrent33.073.3264.0290.9248.0

us-gaap:DeferredCompensationSharebasedArrangementsLiabilityCurrentAndNoncurrent us-gaap:AwardType, us-gaap:PlanName

us-gaap:DeferredCompensationSharebasedArrangementsLiabilityCurrentAndNoncurrent

us-gaap:StockAppreciationRightsSARS, sndr:A2011OmnibusLongtermIncentivePlan


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value5300000.04800000.09000000.08400000.06000000.0
Percentage of DeferredCompensationSharebasedArrangementsLiabilityCurrentAndNoncurrent100.0100.0100.0100.0100.0

us-gaap:DeferredFinanceCostsCurrentNet us-gaap:DebtInstrument

us-gaap:DeferredFinanceCostsCurrentNet

sndr:UnsecuredSeniorNotes


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value100000.0100000.0200000.0200000.0300000.0300000.0400000.0
Percentage of DeferredFinanceCostsCurrentNet100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value496497486423583
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value4850414147
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards


Deferred
Period End2020-12-31
Value11
Percentage of DeferredTaxAssetsOperatingLossCarryforwards100.0

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value5200000.04800000.05000000.04000000.06200000.0
Percentage of DeferredTaxAssetsOther100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value109.6141521
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value400000.0400000.01100000.01100000.01000000.0
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsPolicyholderLiabilities

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsPolicyholderLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value3000000.02400000.02600000.02800000.04700000.0
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsPolicyholderLiabilities100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value5.93.5118.75.2
Percentage of DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesLeasingArrangements

us-gaap:DeferredTaxLiabilitiesLeasingArrangements


Deferred
Period End2020-12-312019-12-312018-12-31
Value16180.0
Percentage of DeferredTaxLiabilitiesLeasingArrangements100.0100.00.0

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value7200000.03500000.04500000.0300000.00
Percentage of DeferredTaxLiabilitiesOther100.0100.0100.0100.00.0

us-gaap:DeferredTaxLiabilitiesPrepaidExpenses

us-gaap:DeferredTaxLiabilitiesPrepaidExpenses


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value4300000.04200000.04300000.03600000.05100000.0
Percentage of DeferredTaxLiabilitiesPrepaidExpenses100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value462467466410572
Percentage of DeferredTaxLiabilitiesPropertyPlantAndEquipment100.0100.0100.0100.0100.0

us-gaap:DividendsPayableCurrentAndNoncurrent

us-gaap:DividendsPayableCurrentAndNoncurrent


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-06-302015-12-31
Value13131311111110101110101010108.88.88.8420.00.00.00.0
Percentage of DividendsPayableCurrentAndNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value1069511077665763606762948575658578746381
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized


Employee
Period End2020-12-312020-09-30
Value1315
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized us-gaap:PlanName

sndr:A2017OmnibusIncentivePlan


Employee
Period End2021-06-302021-03-31
Value2528
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized0.00.0

us-gaap:EquitySecuritiesFVNINoncurrent us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:EquitySecuritiesFVNINoncurrent

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


Equity
Period End2021-06-30
Value25
Percentage of EquitySecuritiesFVNINoncurrent100.0

us-gaap:EquitySecuritiesFvNiCost us-gaap:InvestmentType

us-gaap:EquitySecuritiesFvNiCost

sndr:TuSimpleLimited


Equity
Period End2021-01-12
Value5000000.0
Percentage of EquitySecuritiesFvNiCost100.0

us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueAmount us-gaap:Ownership

us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueAmount

sndr:MasteryLogistics


Equity
Period End2021-03-312020-12-312020-09-30
Value10.010.05.0
Percentage of EquitySecuritiesWithoutReadilyDeterminableFairValueAmount100.0100.0100.0

sndr:PlatformScienceInc.


Equity
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value121212129.63.5
Percentage of EquitySecuritiesWithoutReadilyDeterminableFairValueAmount123.0123.0246.00.00.00.0

us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueAmount us-gaap:Ownership, us-gaap:SubsequentEventType

sndr:MasteryLogistics, us-gaap:SubsequentEvent


Equity
Period End2020-10-14
Value10.0
Percentage of EquitySecuritiesWithoutReadilyDeterminableFairValueAmount0.0

us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueUpwardPriceAdjustmentCumulativeAmount us-gaap:Ownership

us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueUpwardPriceAdjustmentCumulativeAmount

sndr:PlatformScienceInc.


Equity
Period End2021-03-31
Value12
Percentage of EquitySecuritiesWithoutReadilyDeterminableFairValueUpwardPriceAdjustmentCumulativeAmount100.0

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiability


Finance
Period End2020-12-31
Value2000000.0
Percentage of FinanceLeaseLiability100.0

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityCurrent


Finance
Period End2020-12-31
Value400000.0
Percentage of FinanceLeaseLiabilityCurrent100.0

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityNoncurrent


Finance
Period End2020-12-31
Value1600000.0
Percentage of FinanceLeaseLiabilityNoncurrent100.0

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDue


Finance
Period End2020-12-31
Value2100000.0
Percentage of FinanceLeaseLiabilityPaymentsDue100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueAfterYearFive


Finance
Period End2020-12-31
Value100000.0
Percentage of FinanceLeaseLiabilityPaymentsDueAfterYearFive100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueInNextRollingTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueInNextRollingTwelveMonths


Finance
Period End2020-12-31
Value500000.0
Percentage of FinanceLeaseLiabilityPaymentsDueInNextRollingTwelveMonths100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive


Finance
Period End2020-12-31
Value100000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearFive100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour


Finance
Period End2020-12-31
Value400000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearFour100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree


Finance
Period End2020-12-31
Value500000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearThree100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo


Finance
Period End2020-12-31
Value500000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearTwo100.0

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount


Finance
Period End2020-12-31
Value100000.0
Percentage of FinanceLeaseLiabilityUndiscountedExcessAmount100.0

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FinanceLeaseRightOfUseAsset


Finance
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value1.81.59.19.510.010
Percentage of FinanceLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseRightOfUseAssetAccumulatedAmortization

us-gaap:FinanceLeaseRightOfUseAssetAccumulatedAmortization


Finance
Period End2020-12-312019-12-31
Value1600000.01900000.0
Percentage of FinanceLeaseRightOfUseAssetAccumulatedAmortization100.0100.0

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent


Finance
Period End2020-12-312019-12-31
Value3.23.3
Percentage of FinanceLeaseWeightedAverageDiscountRatePercent100.0100.0

us-gaap:GoodwillGross

us-gaap:GoodwillGross


Goodwill
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value128127162164164
Percentage of GoodwillGross100.0100.0100.0100.0100.0

us-gaap:GoodwillGross us-gaap:ReportingUnit

sndr:Other


Goodwill
Period End2020-12-312019-12-312018-12-31
Value109.79.8
Percentage of GoodwillGross8.07.66.0

sndr:Truckload


Goodwill
Period End2020-12-312019-12-312018-12-31
Value103103138
Percentage of GoodwillGross80.981.385.2

us-gaap:GoodwillImpairedAccumulatedImpairmentLoss

us-gaap:GoodwillImpairedAccumulatedImpairmentLoss


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312016-12-31
Value4242424242424242428.08.06.06.06.06.0
Percentage of GoodwillImpairedAccumulatedImpairmentLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:InvestmentsFairValueDisclosure

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Investments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value4949474546494851
Percentage of InvestmentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LesseeOperatingLeaseDiscountRate us-gaap:Range, us-gaap:FairValueByMeasurementFrequency, us-gaap:RestructuringPlan

us-gaap:LesseeOperatingLeaseDiscountRate

srt:Maximum, us-gaap:FairValueMeasurementsNonrecurring, sndr:FTFMserviceofferingshutdown


Lessee
Period End2020-12-312019-12-31
Value4.04.5
Percentage of LesseeOperatingLeaseDiscountRate100.0100.0

srt:Minimum, us-gaap:FairValueMeasurementsNonrecurring, sndr:FTFMserviceofferingshutdown


Lessee
Period End2020-12-312019-12-31
Value3.62.9
Percentage of LesseeOperatingLeaseDiscountRate90.064.4

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths


Lessee
Period End2020-12-31
Value25
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths100.0

us-gaap:LettersOfCreditOutstandingAmount us-gaap:CreditFacility, us-gaap:DebtInstrument

us-gaap:LettersOfCreditOutstandingAmount

us-gaap:StandbyLettersOfCredit, sndr:CreditFacility


Letters
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value3.93.93.93.93.93.93.83.9
Percentage of LettersOfCreditOutstandingAmount100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StandbyLettersOfCredit, sndr:ReceivablesPurchaseAgreement


Letters
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value7070707070707065
Percentage of LettersOfCreditOutstandingAmount1802.61802.61802.61802.61802.61802.61850.01674.4

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity us-gaap:DebtInstrument

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

sndr:CreditFacility


Line
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value400400250250250250250
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity100.0100.0100.0100.0100.0100.0100.0

us-gaap:LoansAndLeasesReceivableAllowance

us-gaap:LoansAndLeasesReceivableAllowance


Loans
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value800000.0800000.0800000.0900000.0800000.0700000.0600000.0600000.0500000.0500000.0500000.0500000.0700000.02100000.01700000.01400000.01493000.01489000.01036000.0
Percentage of LoansAndLeasesReceivableAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value100100400.4303055101737651109.515192220170258
Percentage of LongTermDebtAndCapitalLeaseObligationsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths us-gaap:DebtInstrument

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

sndr:UnsecuredSeniorNotes


Long
Period End2020-12-31
Value40
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive us-gaap:DebtInstrument

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive

sndr:UnsecuredSeniorNotes


Long
Period End2020-12-31
Value95
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour us-gaap:DebtInstrument

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour

sndr:UnsecuredSeniorNotes


Long
Period End2020-12-31
Value40
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree us-gaap:DebtInstrument

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree

sndr:UnsecuredSeniorNotes


Long
Period End2020-12-31
Value70
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo us-gaap:DebtInstrument

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo

sndr:UnsecuredSeniorNotes


Long
Period End2020-12-31
Value60
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo100.0

us-gaap:LongtermDebtWeightedAverageInterestRate us-gaap:DebtInstrument

us-gaap:LongtermDebtWeightedAverageInterestRate

sndr:UnsecuredSeniorNotes


Longterm
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value3.613.533.643.620.03540.03530.03420.03360.03360.03360.03360.03360.03360.03360.03360.03360.03660.03660.0366
Percentage of LongtermDebtWeightedAverageInterestRate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:MinorityInterestOwnershipPercentageByNoncontrollingOwners us-gaap:Ownership

us-gaap:MinorityInterestOwnershipPercentageByNoncontrollingOwners

sndr:MasteryLogistics


Minority
Period End2020-12-312020-09-30
Value10.15.3
Percentage of MinorityInterestOwnershipPercentageByNoncontrollingOwners100.0100.0

us-gaap:MinorityInterestOwnershipPercentageByNoncontrollingOwners us-gaap:Ownership, us-gaap:SubsequentEventType

sndr:MasteryLogistics, us-gaap:SubsequentEvent


Minority
Period End2020-10-14
Value10.1
Percentage of MinorityInterestOwnershipPercentageByNoncontrollingOwners0.0

us-gaap:NetInvestmentInLeaseCurrent

us-gaap:NetInvestmentInLeaseCurrent


Net
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value959696109118121125122126129
Percentage of NetInvestmentInLeaseCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NetInvestmentInLeaseNoncurrent

us-gaap:NetInvestmentInLeaseNoncurrent


Net
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value146131118109112109126133138133
Percentage of NetInvestmentInLeaseNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent


Operating
Period End2020-12-312019-12-31
Value3.80.041
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent100.0100.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsNonrecurring


Operating
Period End2020-12-312019-12-31
Value4.14.0
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent107.99756.1

us-gaap:OperatingLossCarryforwards

us-gaap:OperatingLossCarryforwards


Operating
Period End2020-12-31
Value203
Percentage of OperatingLossCarryforwards100.0

us-gaap:OtherCommitment

us-gaap:OtherCommitment


Other
Period End2020-12-312020-09-30
Value161139
Percentage of OtherCommitment100.0100.0

us-gaap:OtherReceivablesNetCurrent

us-gaap:OtherReceivablesNetCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value2923202131262816015141312019182224212541
Percentage of OtherReceivablesNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PrepaidInsurance

us-gaap:PrepaidInsurance


Prepaid
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value108.19.27.97.0
Percentage of PrepaidInsurance100.0100.0100.0100.0100.0

us-gaap:PropertyPlantAndEquipmentOther

us-gaap:PropertyPlantAndEquipmentOther


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value167165166166165165162161162159157157159177175174174191
Percentage of PropertyPlantAndEquipmentOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PurchaseCommitmentRemainingMinimumAmountCommitted

us-gaap:PurchaseCommitmentRemainingMinimumAmountCommitted


Purchase
Period End2021-06-302021-03-31
Value415372
Percentage of PurchaseCommitmentRemainingMinimumAmountCommitted100.0100.0

us-gaap:RestructuringReserve

us-gaap:RestructuringReserve


Restructuring
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value4500000.04500000.04700000.05100000.01900000.00
Percentage of RestructuringReserve100.0100.0100.0100.0100.00.0

us-gaap:RestructuringReserve us-gaap:RestructuringCostAndReserve, us-gaap:StatementBusinessSegments

sndr:Othercosts, sndr:Truckload


Restructuring
Period End2020-12-312019-12-312018-12-31
Value4400000.05100000.00
Percentage of RestructuringReserve0.0100.00.0

us-gaap:RevenueRemainingPerformanceObligation

us-gaap:RevenueRemainingPerformanceObligation


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value8187949128253027342129392737
Percentage of RevenueRemainingPerformanceObligation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueRemainingPerformanceObligation us-gaap:ProductOrService, us-gaap:TimingOfTransferOfGoodOrService

sndr:LogisticsManagement, sndr:Expectedtoberecognizedafteroneyear


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value111517131413136.97.37.55.04.05.5
Percentage of RevenueRemainingPerformanceObligation14.317.818.114.452.051.644.825.321.535.712.614.814.8

sndr:LogisticsManagement, sndr:Expectedtoberecognizedwithinoneyear


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value11111210119.09.38.61.7
Percentage of RevenueRemainingPerformanceObligation13.613.313.512.042.335.730.431.55.0

sndr:Transportation, sndr:Expectedtoberecognizedafteroneyear


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value434549520.30.60.91.3101.61.41.01.3
Percentage of RevenueRemainingPerformanceObligation53.351.952.257.31.12.42.94.830.67.63.53.73.5

sndr:Transportation, sndr:Expectedtoberecognizedwithinoneyear


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value151415141.32.66.71014
Percentage of RevenueRemainingPerformanceObligation18.817.016.216.44.610.321.938.542.9

us-gaap:SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived

us-gaap:SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived


Sales
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value300284266250252264261285288294291
Percentage of SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived us-gaap:FinancingReceivablesPeriodPastDue

us-gaap:FinancialAssetPastDue


Sales
Period End2021-06-30
Value2.7
Percentage of SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived0.9

us-gaap:SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFiveYears

us-gaap:SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFiveYears


Sales
Period End2020-12-31
Value600000.0
Percentage of SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFiveYears100.0

us-gaap:SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFourYears

us-gaap:SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFourYears


Sales
Period End2020-12-31
Value4000000.0
Percentage of SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFourYears100.0

us-gaap:SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedNextTwelveMonths

us-gaap:SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedNextTwelveMonths


Sales
Period End2020-12-31
Value119
Percentage of SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedNextTwelveMonths100.0

us-gaap:SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedThreeYears

us-gaap:SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedThreeYears


Sales
Period End2020-12-31
Value62
Percentage of SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedThreeYears100.0

us-gaap:SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedTwoYears

us-gaap:SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedTwoYears


Sales
Period End2020-12-31
Value80
Percentage of SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedTwoYears100.0

us-gaap:SalesTypeLeaseLeaseReceivable

us-gaap:SalesTypeLeaseLeaseReceivable


Sales
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value184173159144138141135146145142140
Percentage of SalesTypeLeaseLeaseReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SalesTypeLeaseNetInvestmentInLease

us-gaap:SalesTypeLeaseNetInvestmentInLease


Sales
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value241228215219230230251256265262
Percentage of SalesTypeLeaseNetInvestmentInLease100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SalesTypeLeaseNetInvestmentInLease us-gaap:InternalCreditAssessment

sndr:Between2999and1500PastDue


Sales
Period End2020-09-302020-06-302020-03-31
Value8.8138.8
Percentage of SalesTypeLeaseNetInvestmentInLease4.16.03.8

sndr:Greaterthan3000PastDue


Sales
Period End2020-09-302020-06-302020-03-31
Value6.1135.8
Percentage of SalesTypeLeaseNetInvestmentInLease2.86.02.5

sndr:Lessthan1499PastDue


Sales
Period End2020-09-302020-06-302020-03-31
Value263028
Percentage of SalesTypeLeaseNetInvestmentInLease12.413.712.4

sndr:PastDue


Sales
Period End2021-06-302021-03-312020-12-31
Value374541
Percentage of SalesTypeLeaseNetInvestmentInLease0.018.818.2

sndr:TotalPastDue


Sales
Period End2020-09-302020-06-302020-03-31
Value415643
Percentage of SalesTypeLeaseNetInvestmentInLease19.325.818.8

us-gaap:SalesTypeLeaseNetInvestmentInLeaseAfterAllowanceForCreditLoss

us-gaap:SalesTypeLeaseNetInvestmentInLeaseAfterAllowanceForCreditLoss


Sales
Period End2021-06-302020-12-31
Value255228
Percentage of SalesTypeLeaseNetInvestmentInLeaseAfterAllowanceForCreditLoss100.0100.0

us-gaap:SalesTypeLeaseNetInvestmentInLeaseAfterAllowanceForCreditLossCurrent

us-gaap:SalesTypeLeaseNetInvestmentInLeaseAfterAllowanceForCreditLossCurrent


Sales
Period End2021-06-302020-12-31
Value10196
Percentage of SalesTypeLeaseNetInvestmentInLeaseAfterAllowanceForCreditLossCurrent100.0100.0

us-gaap:SalesTypeLeaseNetInvestmentInLeaseAfterAllowanceForCreditLossNoncurrent

us-gaap:SalesTypeLeaseNetInvestmentInLeaseAfterAllowanceForCreditLossNoncurrent


Sales
Period End2021-06-302020-12-31
Value153131
Percentage of SalesTypeLeaseNetInvestmentInLeaseAfterAllowanceForCreditLossNoncurrent100.0100.0

us-gaap:SalesTypeLeaseNetInvestmentInLeaseAllowanceForCreditLoss

us-gaap:SalesTypeLeaseNetInvestmentInLeaseAllowanceForCreditLoss


Sales
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value800000.0900000.0800000.0700000.0600000.0
Percentage of SalesTypeLeaseNetInvestmentInLeaseAllowanceForCreditLoss100.0100.0100.0100.0100.0

us-gaap:SalesTypeLeaseNetInvestmentInLeaseOriginatedFiveOrMoreYearsBeforeLatestFiscalYear us-gaap:InternalCreditAssessment

us-gaap:SalesTypeLeaseNetInvestmentInLeaseOriginatedFiveOrMoreYearsBeforeLatestFiscalYear

sndr:Lessthan1499PastDue


Sales
Period End2020-09-302020-06-302020-03-31
Value100000.00100000.0
Percentage of SalesTypeLeaseNetInvestmentInLeaseOriginatedFiveOrMoreYearsBeforeLatestFiscalYear100.00.0100.0

us-gaap:SalesTypeLeaseNetInvestmentInLeaseOriginatedFourYearsBeforeLatestFiscalYear us-gaap:InternalCreditAssessment

us-gaap:SalesTypeLeaseNetInvestmentInLeaseOriginatedFourYearsBeforeLatestFiscalYear

sndr:Lessthan1499PastDue


Sales
Period End2020-09-302020-06-302020-03-31
Value100000.0500000.0800000.0
Percentage of SalesTypeLeaseNetInvestmentInLeaseOriginatedFourYearsBeforeLatestFiscalYear100.0100.0100.0

sndr:TotalPastDue


Sales
Period End2020-09-302020-06-302020-03-31
Value100000.0800000.01300000.0
Percentage of SalesTypeLeaseNetInvestmentInLeaseOriginatedFourYearsBeforeLatestFiscalYear100.0160.0162.5

us-gaap:SalesTypeLeaseNetInvestmentInLeaseOriginatedInCurrentFiscalYear us-gaap:InternalCreditAssessment

us-gaap:SalesTypeLeaseNetInvestmentInLeaseOriginatedInCurrentFiscalYear

sndr:Between2999and1500PastDue


Sales
Period End2020-09-302020-06-302020-03-31
Value4.96.91.4
Percentage of SalesTypeLeaseNetInvestmentInLeaseOriginatedInCurrentFiscalYear100.0100.0100.0

sndr:Greaterthan3000PastDue


Sales
Period End2020-09-302020-06-302020-03-31
Value3.54.50.7
Percentage of SalesTypeLeaseNetInvestmentInLeaseOriginatedInCurrentFiscalYear71.465.250.0

sndr:Lessthan1499PastDue


Sales
Period End2020-09-302020-06-302020-03-31
Value14115.6
Percentage of SalesTypeLeaseNetInvestmentInLeaseOriginatedInCurrentFiscalYear304.1160.9400.0

sndr:TotalPastDue


Sales
Period End2020-09-302020-06-302020-03-31
Value23227.7
Percentage of SalesTypeLeaseNetInvestmentInLeaseOriginatedInCurrentFiscalYear475.5326.1550.0

us-gaap:SalesTypeLeaseNetInvestmentInLeaseOriginatedInFiscalYearBeforeLatestFiscalYear us-gaap:InternalCreditAssessment

us-gaap:SalesTypeLeaseNetInvestmentInLeaseOriginatedInFiscalYearBeforeLatestFiscalYear

sndr:Between2999and1500PastDue


Sales
Period End2020-09-302020-06-302020-03-31
Value2.14.04.3
Percentage of SalesTypeLeaseNetInvestmentInLeaseOriginatedInFiscalYearBeforeLatestFiscalYear100.0100.0100.0

sndr:Greaterthan3000PastDue


Sales
Period End2020-09-302020-06-302020-03-31
Value1.74.62.8
Percentage of SalesTypeLeaseNetInvestmentInLeaseOriginatedInFiscalYearBeforeLatestFiscalYear81.0115.065.1

sndr:Lessthan1499PastDue


Sales
Period End2020-09-302020-06-302020-03-31
Value7.11013
Percentage of SalesTypeLeaseNetInvestmentInLeaseOriginatedInFiscalYearBeforeLatestFiscalYear338.1272.5316.3

sndr:TotalPastDue


Sales
Period End2020-09-302020-06-302020-03-31
Value101920
Percentage of SalesTypeLeaseNetInvestmentInLeaseOriginatedInFiscalYearBeforeLatestFiscalYear519.0487.5481.4

us-gaap:SalesTypeLeaseNetInvestmentInLeaseOriginatedThreeYearsBeforeLatestFiscalYear us-gaap:InternalCreditAssessment

us-gaap:SalesTypeLeaseNetInvestmentInLeaseOriginatedThreeYearsBeforeLatestFiscalYear

sndr:Between2999and1500PastDue


Sales
Period End2020-09-302020-06-302020-03-31
Value500000.0100000.0700000.0
Percentage of SalesTypeLeaseNetInvestmentInLeaseOriginatedThreeYearsBeforeLatestFiscalYear100.0100.0100.0

sndr:Lessthan1499PastDue


Sales
Period End2020-09-302020-06-302020-03-31
Value1000000.01700000.02500000.0
Percentage of SalesTypeLeaseNetInvestmentInLeaseOriginatedThreeYearsBeforeLatestFiscalYear200.01700.0357.1

sndr:TotalPastDue


Sales
Period End2020-09-302020-06-302020-03-31
Value1500000.04100000.03800000.0
Percentage of SalesTypeLeaseNetInvestmentInLeaseOriginatedThreeYearsBeforeLatestFiscalYear300.04100.0542.9

us-gaap:SalesTypeLeaseNetInvestmentInLeaseOriginatedTwoYearsBeforeLatestFiscalYear us-gaap:InternalCreditAssessment

us-gaap:SalesTypeLeaseNetInvestmentInLeaseOriginatedTwoYearsBeforeLatestFiscalYear

sndr:Between2999and1500PastDue


Sales
Period End2020-09-302020-06-302020-03-31
Value1300000.01900000.02000000.0
Percentage of SalesTypeLeaseNetInvestmentInLeaseOriginatedTwoYearsBeforeLatestFiscalYear100.0100.0100.0

sndr:Greaterthan3000PastDue


Sales
Period End2020-09-302020-06-302020-03-31
Value900000.01600000.01600000.0
Percentage of SalesTypeLeaseNetInvestmentInLeaseOriginatedTwoYearsBeforeLatestFiscalYear69.284.280.0

sndr:Lessthan1499PastDue


Sales
Period End2020-09-302020-06-302020-03-31
Value3400000.05900000.06100000.0
Percentage of SalesTypeLeaseNetInvestmentInLeaseOriginatedTwoYearsBeforeLatestFiscalYear261.5310.5305.0

sndr:TotalPastDue


Sales
Period End2020-09-302020-06-302020-03-31
Value5600000.09400000.09700000.0
Percentage of SalesTypeLeaseNetInvestmentInLeaseOriginatedTwoYearsBeforeLatestFiscalYear430.8494.7485.0

us-gaap:SalesTypeLeaseNetInvestmentInLeasePastDue

us-gaap:SalesTypeLeaseNetInvestmentInLeasePastDue


Sales
Period End2021-03-312020-12-312020-09-302020-06-302020-03-31
Value2700000.02400000.02500000.03100000.02500000.0
Percentage of SalesTypeLeaseNetInvestmentInLeasePastDue100.0100.0100.0100.0100.0

us-gaap:SalesTypeLeaseNetInvestmentInLeasePastDue us-gaap:FinancingReceivablesPeriodPastDue

us-gaap:FinancingReceivables1To29DaysPastDue


Sales
Period End2020-12-312020-09-302020-06-302020-03-31
Value1200000.01300000.01700000.01300000.0
Percentage of SalesTypeLeaseNetInvestmentInLeasePastDue50.052.054.852.0

us-gaap:FinancingReceivables30To59DaysPastDue


Sales
Period End2020-12-312020-09-302020-06-302020-03-31
Value500000.0500000.0600000.0500000.0
Percentage of SalesTypeLeaseNetInvestmentInLeasePastDue20.820.019.420.0

us-gaap:FinancingReceivables60To89DaysPastDue


Sales
Period End2020-12-312020-09-302020-06-302020-03-31
Value300000.0300000.0400000.0300000.0
Percentage of SalesTypeLeaseNetInvestmentInLeasePastDue12.512.012.912.0

us-gaap:SalesTypeLeaseResidualValueOfLeasedAsset

us-gaap:SalesTypeLeaseResidualValueOfLeasedAsset


Sales
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value115110107105113122126138143152151
Percentage of SalesTypeLeaseResidualValueOfLeasedAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber us-gaap:AwardType, us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

us-gaap:StockAppreciationRightsSARS, sndr:A2011OmnibusLongtermIncentivePlan


Share
Period End2020-12-312019-12-312018-12-312017-12-31
Value1000000.01000000.02500000.02900000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

sndr:PerformanceSharesAndPerformanceShareUnits


Share
Period End2020-12-312019-12-312018-12-312018-09-302018-03-312017-12-312016-12-31
Value22.1524.1122.6422.6322.1219.00
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.00.0

sndr:RestrictedSharesAndRestrictedStockUnits


Share
Period End2020-12-312019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value22.9623.3423.723.6723.4723.2719.00
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue103.796.8104.7104.60.0105.2100.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice

sndr:NonQualifiedStockOptions


Share
Period End2020-12-312019-12-312018-12-312017-12-31
Value6.347.088.966.37
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber

sndr:NonQualifiedStockOptions


Share
Period End2020-12-312019-12-312018-12-312017-12-31
Value179890.0130560.048995.00
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber100.0100.0100.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice

sndr:NonQualifiedStockOptions


Share
Period End2020-12-312019-12-312018-12-312017-12-31
Value21.1821.3819.00
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice100.0100.0100.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

sndr:NonQualifiedStockOptions


Share
Period End2020-12-312019-12-312017-12-31
Value735000.0641000.02195000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue100.0100.0100.0

us-gaap:SharePrice us-gaap:AwardType

us-gaap:SharePrice

sndr:NonQualifiedStockOptions


Share
Period End2020-12-312019-12-312018-12-312017-12-29
Value20.721.8218.6728.56
Percentage of SharePrice100.0100.0100.0100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1 us-gaap:AwardType

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1

sndr:NonQualifiedStockOptions


Sharebased
Period End2020-12-312019-12-312018-12-312017-12-31
Value244000.0255000.000
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1100.0100.00.00.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue

sndr:NonQualifiedStockOptions


Sharebased
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value6.897.347.776.370
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.00.0

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued


Unrecognized
Period End2020-12-312019-12-31
Value2400000.02100000.0
Percentage of UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued100.0100.0

us-gaap:ValuationAllowancesAndReservesBalance us-gaap:ValuationAllowancesAndReservesType

us-gaap:ValuationAllowancesAndReservesBalance

sndr:AllowanceForDoubtfulAccountsandRevenueAdjustmentsMember


Valuation
Period End2020-12-312019-12-312018-12-312017-12-31
Value3700000.03400000.06800000.05200000.0
Percentage of ValuationAllowancesAndReservesBalance100.0100.0100.0100.0

Line plots across dimensions of each concept


Operating Margin
us-gaap:StatementBusinessSegments
(None,)
Operating  Marginus-gaap: Statement Business Segments
TTM Greenblatt ROC
_
(None,)
T T M  Greenblatt  R O C_
us-gaap:OperatingIncomeLoss
us-gaap:StatementBusinessSegments
(None,)
Operating Income Lossus-gaap: Statement Business Segments
us-gaap:Revenues
us-gaap:StatementBusinessSegments
(None,)
Revenuesus-gaap: Statement Business Segments
us-gaap:Revenues
us-gaap:StatementBusinessSegments, us-gaap:Subsegments
(None, 'sndr:OtherInsurance')
Revenuesus-gaap: Statement Business Segments, us-gaap: Subsegments
us-gaap:Revenues
us-gaap:ProductOrService
(None,)
Revenuesus-gaap: Product Or Service
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components
us-gaap:InventoryNet
us-gaap:PublicUtilitiesInventory
(None,)
Inventory Netus-gaap: Public Utilities Inventory
us-gaap:Goodwill
us-gaap:StatementBusinessSegments
(None,)
Goodwillus-gaap: Statement Business Segments
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components