SUI


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

Table of contents



us-gaap:CommonStockValue

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:CostsAndExpenses

us-gaap:GainsLossesOnExtinguishmentOfDebt
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:GeneralAndAdministrativeExpense
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
us-gaap:ConsolidationItems
us-gaap:IncomeTaxExpenseBenefit
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IncomeTaxesPaidNet
us-gaap:ConsolidationItems
us-gaap:InterestExpense
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:InterestExpenseDebt

us-gaap:InterestIncomeOperating

us-gaap:InterestPaidNet

us-gaap:NetIncomeLoss
us-gaap:StatementBusinessSegments
us-gaap:StatementEquityComponents

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic
us-gaap:ConsolidationItems
us-gaap:StatementBusinessSegments

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

us-gaap:OtherNonoperatingIncomeExpense
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:ProfitLoss
us-gaap:ConsolidationItems
us-gaap:StatementBusinessSegments

us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax
us-gaap:ProductOrService
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

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

us-gaap:Assets
us-gaap:ConsolidatedEntities
us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:StatementBusinessSegments

us-gaap:Liabilities
us-gaap:ConsolidatedEntities
us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:StatementBusinessSegments

us-gaap:Land

us-gaap:FurnitureAndFixturesGross

us-gaap:AmortizationOfIntangibleAssets
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:Goodwill
us-gaap:BusinessAcquisition
us-gaap:StatementBusinessSegments

us-gaap:IntangibleAssetsNetIncludingGoodwill

us-gaap:OtherAssets
us-gaap:ConsolidatedEntities
us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:StatementBusinessSegments

us-gaap:LongTermDebt
dei:LegalEntity
dei:LegalEntity, us-gaap:DebtInstrument
us-gaap:CreditFacility
us-gaap:CreditFacility, us-gaap:LongtermDebtType
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LongtermDebtType
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:LongtermDebtType

us-gaap:MinorityInterest

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapital

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:MinorityInterest

us-gaap:StockIssuedDuringPeriodValueNewIssues
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DeferredIncomeTaxExpenseBenefit
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:DepreciationDepletionAndAmortization

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementBusinessSegments
us-gaap:StatementEquityComponents

us-gaap:ProfitLoss
us-gaap:ConsolidationItems
us-gaap:StatementBusinessSegments

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt
us-gaap:StatementClassOfStock
us-gaap:PaymentsOfDividendsCommonStock
us-gaap:StatementClassOfStock, us-gaap:SubsequentEventType

us-gaap:Dividends
us-gaap:LongtermDebtType
us-gaap:DebtInstrumentInterestRateStatedPercentage
us-gaap:Range, us-gaap:LongtermDebtType, us-gaap:VariableRate
us-gaap:AwardDate
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
us-gaap:TitleOfIndividual, sui:VestingType, us-gaap:AwardDate, us-gaap:AwardType, us-gaap:PlanName
us-gaap:TitleOfIndividual, sui:VestingType, us-gaap:AwardType, us-gaap:PlanName
us-gaap:TitleOfIndividual, us-gaap:AwardDate

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsValuationAllowance

sui:AggregateValueofSharestobeIssuedinAccordancetoSalesAgreement

sui:AncillaryRevenue
sui:AssetAcquisition
sui:AssetAcquisitionPaymentsToAcquireBusinessesGross
us-gaap:BusinessAcquisition
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType
sui:AssetsHeldForSaleAdjustmentOfNotesReceivable
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FairValueByMeasurementFrequency

sui:Brokeragecommissionsandotherincomenet
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:BusinessAcquisition
sui:BusinessCombinationConsideredTransferredDeferredPayment

sui:CommissionMaximumPercentageofGrossSalesPricePerShareAccordingtoSalesAgreement
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
sui:DebtInstrumentConvertiblePercentOfAmountByWhichTheMarketPriceOfCommonStockExceedsThreshold

sui:DistributionsFromAffiliate
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

sui:DistributionsToStockholdersOpUnitHoldersAndPreferredOpUnitHolders
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
sui:EquityMethodInvestmentCashContributions
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
sui:EquityMethodInvestmentCumulativeTranslationAdjustment
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
sui:EquityMethodInvestmentFairValueAdjustment
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
sui:EquityMethodInvestmentsInitialFairValueAdjustment
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType
sui:FinancedSalesOfManufacturedHomes

sui:IncomelossAttributabletoCommonStockholdersAllocableToNonVestedRestrictedShares
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
sui:InvestmentAdditionalPurchase
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
sui:InvestmentFairValueAdjustment
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
sui:InvestmentForeignCurrentTranslationAdjustment

sui:Issuanceofnotesandotherreceivables
dei:LegalEntity, us-gaap:RelatedPartyTransactionsByRelatedParty
sui:LesseeOperatingLeaseGrossBaseRent

sui:LossonRemeasurementofInvestment
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

sui:LossonRemeasurementofNotesReceivable
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

sui:MinimumPercentOfIncomeFromQualifyingSourcesToAllowForRealEstateInvestmentTrustClassification

sui:NetIncomeLossIncludingPortionAttributabletoNoncontrollingInterestandReturnsfromPreferredStock
us-gaap:StatementEquityComponents

sui:NetProceedsFromForwardEquityOffering

sui:Netincomeattributabletocommonshareholdersafterrestrictedstockallocation
us-gaap:StatementClassOfStock
sui:NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationEscrow
us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
sui:NumberofMHSites

sui:OperatingAndFinanceLeasePayments
us-gaap:ConsolidationItems
sui:OperatingExpensesAndCostOfSales
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems
sui:OtherRevenuesSegment
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

sui:PreferredreturntoSeriesA1preferredOPunits
us-gaap:ConsolidationItems
us-gaap:StatementBusinessSegments

sui:PrepaymentPenaltyDebt
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType
sui:PrincipalReductionFromRepossessedHomes
sui:FutureLeasePaymentSubsequentPeriods
sui:RelatedPartyTransactionsCurrentandFutureBaseRent

sui:RemeasurementOfMarketableSecurities
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:StatementEquityComponents
sui:RemeasurementofNotesReceivableEquityMethodInvestment

sui:RentalHomeRevenue

sui:RepaymentofNotesandOtherReceivables

sui:RequiredMinimumPercentOfTaxableIncomeDistributedToStockHolders

sui:RevenueFromHomeSales

sui:RightofUseAssetObtainedinExchangeforNewOperatingLeaseLiability

sui:SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsPercentExpectedToVest

sui:StockBasedCompensationAmortizationAndForfeitures
us-gaap:StatementEquityComponents
us-gaap:StatementClassOfStock
sui:StockIssuedDuringPeriodValueNewIssuesPreferredOPUnits

sui:TemporaryEquityDividends
us-gaap:StatementEquityComponents
us-gaap:StatementClassOfStock
sui:TemporaryEquityDividendsForTermOnePercentage
us-gaap:StatementClassOfStock, us-gaap:SubsequentEventType
us-gaap:StatementClassOfStock
sui:TemporaryEquityDividendsForTermTwoPercentage
us-gaap:StatementBusinessSegments
sui:TransientRVRentalRevenueRecognizedPercentage

sui:VariableInterestEntityEquityInterestsIssued
us-gaap:StatementEquityComponents
dei:LegalEntity, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
sui:VariableInterestEntityEquityInterestsIssuedFloatingRate

sui:WeightedAverageCommonSharesOutstandingAdjustmentCommonShareFromForwardSale

us-gaap:AdjustmentsToAdditionalPaidInCapitalMarkToMarket
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType
us-gaap:AllowanceForLoanAndLeaseLossesAdjustmentsNet
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisitionProFormaEarningsPerShareBasic
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisitionProFormaEarningsPerShareDiluted

us-gaap:BusinessAcquisitionsProFormaNetIncomeLoss
us-gaap:BusinessAcquisition

us-gaap:BusinessAcquisitionsProFormaRevenue
us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationConsiderationTransferred1

us-gaap:BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable
us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationIntegrationRelatedCosts
us-gaap:BusinessAcquisition
us-gaap:ConsolidationItems
us-gaap:BusinessCombinationSeparatelyRecognizedTransactionsExpensesAndLossesRecognized
us-gaap:StatementClassOfStock
us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:ContractWithCustomerAssetReclassifiedToReceivable

us-gaap:ConversionOfStockAmountConverted1
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:ConversionOfStockSharesConverted1

us-gaap:CostOfOtherPropertyOperatingExpense

us-gaap:CurrentStateAndLocalTaxExpenseBenefit
us-gaap:BusinessAcquisition, us-gaap:CreditFacility, us-gaap:VariableRate
us-gaap:DebtInstrumentBasisSpreadOnVariableRate1
us-gaap:Range, us-gaap:BusinessAcquisition, us-gaap:CreditFacility, us-gaap:VariableRate
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentInterestRateDuringPeriod
us-gaap:LongtermDebtType
us-gaap:ConsolidationItems
us-gaap:DepreciationAndAmortization
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:DirectCostsOfLeasedAndRentedPropertyOrEquipment

us-gaap:DistributionsOnMandatorilyRedeemableSecurities

us-gaap:DividendsCash
us-gaap:StatementEquityComponents

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:EquityMethodInvestmentDividendsOrDistributions
us-gaap:BusinessAcquisition
us-gaap:FairValueOfAssetsAcquired

us-gaap:FinanceLeaseInterestExpense

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FinanceLeaseRightOfUseAssetAmortization

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:GainLossOnSaleOfProperties
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:IncomeLossFromEquityMethodInvestments
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:InterestCostsCapitalized

us-gaap:InterestExpenseOther
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:LeaseCost

us-gaap:LeaseIncome
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:LineOfCreditFacilityIncreaseDecreaseForPeriodNet
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType
us-gaap:LoansAndLeasesReceivableRelatedPartiesProceeds

us-gaap:LossFromCatastrophes
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:MinorityInterestDecreaseFromRedemptions
us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable
us-gaap:ConsolidationItems
us-gaap:StatementBusinessSegments

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeasePayments

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax

us-gaap:OtherCostAndExpenseOperating

us-gaap:OtherCostOfOperatingRevenue

us-gaap:PaymentsOfFinancingCosts

us-gaap:PaymentsToAcquireAndDevelopRealEstate

us-gaap:PaymentsToAcquireBusinessesGross
us-gaap:AssetAcquisition
us-gaap:BusinessAcquisition
us-gaap:SubsequentEventType

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireInterestInSubsidiariesAndAffiliates
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:PaymentsToAcquireLimitedPartnershipInterests

us-gaap:ProceedsFromDivestitureOfInterestInSubsidiariesAndAffiliates

us-gaap:ProceedsFromIssuanceOfCommonStock
us-gaap:StatementScenario
us-gaap:LongtermDebtType
us-gaap:ProceedsFromIssuanceOfDebt

us-gaap:ProceedsFromIssuanceOrSaleOfEquity

us-gaap:ProceedsFromLinesOfCredit

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment
us-gaap:AwardType
us-gaap:ProceedsFromStockOptionsExercised

us-gaap:RealEstateTaxExpense
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType
us-gaap:ReceivableWithImputedInterestEffectiveYieldInterestRate

us-gaap:RepaymentsOfLinesOfCredit
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:RepaymentsOfSecuredDebt

us-gaap:SellingExpense
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
sui:ChangesInFairValueLevel3, us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:ServicingAssetAtFairValueOtherChangesInFairValue
us-gaap:TitleOfIndividual, sui:VestingType, us-gaap:AwardDate, us-gaap:AwardType, us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:TitleOfIndividual, sui:VestingType, us-gaap:AwardType, us-gaap:PlanName
us-gaap:TitleOfIndividual, us-gaap:AwardDate
us-gaap:TitleOfIndividual, us-gaap:AwardDate, us-gaap:PlanName
us-gaap:PropertyPlantAndEquipmentByType
us-gaap:ShortTermLeaseCost

us-gaap:StateAndLocalIncomeTaxExpenseBenefitContinuingOperations
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
us-gaap:StatementEquityComponents
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:StockIssuedDuringPeriodValueDividendReinvestmentPlan
us-gaap:StatementClassOfStock
us-gaap:StockRedeemedOrCalledDuringPeriodShares
us-gaap:StatementClassOfStock
us-gaap:StockRedeemedOrCalledDuringPeriodValue

us-gaap:TemporaryEquityAccretionToRedemptionValue
us-gaap:StatementEquityComponents

us-gaap:TemporaryEquityNetIncome
us-gaap:StatementEquityComponents
us-gaap:PropertyPlantAndEquipmentByType
us-gaap:VariableLeaseCost

us-gaap:VariableLeaseIncome

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

sui:AllowanceForRentWaterSewerUsageReceivables
sui:AssetAcquisition
us-gaap:AssetAcquisition
sui:AssetAcquisition
sui:AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsLiabilitiesGoodwillAndOtherIntangibleAssets
us-gaap:AssetAcquisition
us-gaap:BusinessAcquisition
sui:AssetAcquisition
sui:AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsLiabilitiesInventory
us-gaap:AssetAcquisition
sui:AssetAcquisition
sui:AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
sui:AssetAcquisition
sui:AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherAssetsLiabilities
us-gaap:AssetAcquisition
sui:AssetAcquisition
sui:AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
us-gaap:AssetAcquisition
us-gaap:BusinessAcquisition
sui:AssetAcquisition
sui:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedGoodwillAndOtherIntangibles
us-gaap:BusinessAcquisition

sui:BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentAssetsLiabilitiesInventory
sui:AssetAcquisition
us-gaap:AssetAcquisition
us-gaap:BusinessAcquisition

sui:BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedOtherLiabilities
sui:AssetAcquisition
us-gaap:AssetAcquisition
us-gaap:BusinessAcquisition
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency
sui:CollateralizedTermLoan
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
sui:DebtInstrumentBasisPriceinStockConversionCalculation
us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:LongtermDebtType
sui:DebtInstrumentNumberOfPropertiesSecuringDebtInstument

sui:DeferredTaxAssetsFederal

sui:DeferredTaxAssetsRealEstate

sui:DeferredTaxLiabilityBasisDifferenceDomesticAssets
us-gaap:ConsolidatedEntities
sui:EquityInterests
us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
sui:EquityMethodInvestmentOwnershipPercentageUnrelatedThirdParty
us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency
sui:FinancialAssetsFairValueDisclosure

sui:HomeSaleProceeds

sui:InsuranceReceivables
us-gaap:LongtermDebtType
sui:LineOfCreditFacilityAdditionalBorrowingCapacity
us-gaap:CreditFacility
sui:LineOfCreditFacilityAdvances
us-gaap:BusinessAcquisition, us-gaap:CreditFacility
sui:LineOfCreditFacilityMaximumBorrowingCapacityIncremental
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency
sui:LongTermDebtExcludingSecuredBorrowingsFairValueDisclosure
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency

sui:MortgageTermLoans
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency
sui:NotesReceivableFairValueAdjustment
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FairValueByMeasurementFrequency

sui:NumberofUnitsinRealEstatePropertyDevelopmentSites

sui:OperatingAndFinanceLeasesLiability

sui:OperatingAndFinanceLeasesLiabilityPaymentDue

sui:OperatingAndFinanceLeasesLiabilityPaymentsDueYearFive

sui:OperatingAndFinanceLeasesLiabilityPaymentsDueYearFour

sui:OperatingAndFinanceLeasesLiabilityPaymentsDueYearThree

sui:OperatingAndFinanceLeasesLiabilityPaymentsDueYearTwo

sui:OperatingAndFinanceLeasesLiabilityPaymentsDueafterYearFive

sui:OperatingAndFinanceLeasesLiabilityPaymentsRemainderofFiscalYear

sui:OperatingAndFinanceLeasesLiabilityUndiscountedExcessAmount

sui:OperatingLossCarryforwardsAfterTax

sui:OperatingandFinanceLeasesLiabilityPaymentsDueNextTwelveMonths

sui:OperatingandFinanceLiability

sui:OperatingandFinanceLiabilityPaymentsDue

sui:OperatingandFinanceLiabilityPaymentsDueAfterYearFive

sui:OperatingandFinanceLiabilityPaymentsDueYearFive

sui:OperatingandFinanceLiabilityPaymentsDueYearFour

sui:OperatingandFinanceLiabilityPaymentsDueYearThree

sui:OperatingandFinanceLiabilityPaymentsDueYearTwo

sui:OperatingandFinanceLiabilityUndiscountedExcessAmount

sui:OtherReceivablesForRentWaterSewerUsage

sui:OtherReceivablesStorageAndLeasePaymentsMarina
us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty
sui:RealEstateAndAccumulatedDepreciationAmountOfEncumbrancesForGroupOfProperties

sui:RealEstateInvestmentPropertyLandImprovementsAndBuildings
us-gaap:BalanceSheetLocation
sui:RealEstateReclassifiedFromHeldForSaleToHeldAndUsed

sui:SecuredDebtAndOtherBorrowings

sui:SharesIssuedWeightedAveragePricePerShare

sui:TemporaryEquity

sui:TemporaryEquityConsolidatedVIE

sui:TransientRVRevenue
us-gaap:StatementBusinessSegments

sui:UndrawnFundsOnLoans

sui:VIEasaPercentageofTotalEquity
us-gaap:ConsolidatedEntities
sui:VariableInterestEntitiesConsolidatedTotalLiabilitiesAndStockholdersEquity
us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
sui:VariableInterestEntityEquityInterest

sui:VariableInterestEntityasaPercentageofConsolidatedAssets

sui:VariableInterestEntityasaPercentageofConsolidatedLiabilities

us-gaap:AccountsAndNotesReceivableNet
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FairValueByMeasurementBasis
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency
us-gaap:StatementBusinessSegments

us-gaap:AccountsPayableCurrentAndNoncurrent

us-gaap:AccumulatedDistributionsInExcessOfNetIncome
dei:LegalEntity
us-gaap:AreaOfRealEstateProperty
dei:LegalEntity, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency

us-gaap:BelowMarketLeaseNet

us-gaap:BusinessAcquisitionCostOfAcquiredEntityTransactionCosts
sui:AssetAcquisition
us-gaap:AssetAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesLongTermDebt
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition, us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory
sui:AssetAcquisition
us-gaap:AssetAcquisition
us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt
sui:AssetAcquisition
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition, us-gaap:CreditFacility

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment

us-gaap:CapitalLeaseObligations

us-gaap:CapitalLeasedAssetsGross

us-gaap:CashUninsuredAmount

us-gaap:ContractWithCustomerLiability
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:ConvertibleNotesPayable

us-gaap:CustomerAdvancesAndDeposits
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentConvertibleConversionPrice1
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentFaceAmount
us-gaap:LongtermDebtType
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentInterestRateEffectivePercentage
us-gaap:Range, us-gaap:CreditFacility
us-gaap:Range, us-gaap:CreditFacility, us-gaap:LongtermDebtType, us-gaap:VariableRate
us-gaap:Range, us-gaap:LongtermDebtType, us-gaap:VariableRate

us-gaap:DebtIssuanceCostsLineOfCreditArrangementsNet

us-gaap:DebtWeightedAverageInterestRate
us-gaap:CreditFacility, us-gaap:LongtermDebtType
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:FairValueByMeasurementBasis, us-gaap:LongtermDebtType
us-gaap:LongtermDebtType

us-gaap:DeferredIncomeTaxLiabilities
us-gaap:IncomeTaxAuthority

us-gaap:DeferredRentCredit

us-gaap:DeferredTaxAssetsGoodwillAndIntangibleAssets

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards
us-gaap:IncomeTaxAuthority

us-gaap:DeferredTaxLiabilitiesInvestments
us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:DisposalGroupIncludingDiscontinuedOperationConsideration

us-gaap:DividendsPayableCurrentAndNoncurrent

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
dei:LegalEntity, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:EquityMethodInvestmentOwnershipPercentage
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:EquityMethodInvestments
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency
us-gaap:FinancialLiabilitiesFairValueDisclosure
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:InventoryFinishedHomes
us-gaap:StatementBusinessSegments
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:InvestmentsFairValueDisclosure
us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LessorOperatingLeasePaymentsToBeReceived

us-gaap:LessorOperatingLeasePaymentsToBeReceivedFiveYears

us-gaap:LessorOperatingLeasePaymentsToBeReceivedFourYears

us-gaap:LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths

us-gaap:LessorOperatingLeasePaymentsToBeReceivedThereafter

us-gaap:LessorOperatingLeasePaymentsToBeReceivedThreeYears

us-gaap:LessorOperatingLeasePaymentsToBeReceivedTwoYears
us-gaap:LongtermDebtType
us-gaap:LettersOfCreditOutstandingAmount

us-gaap:LineOfCredit
us-gaap:BusinessAcquisition, us-gaap:CreditFacility
us-gaap:CreditFacility
us-gaap:CreditFacility, us-gaap:LongtermDebtType
us-gaap:CreditFacility, us-gaap:VariableRate
us-gaap:LongtermDebtType
us-gaap:LongtermDebtType
us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity
us-gaap:BusinessAcquisition, us-gaap:CreditFacility
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity
us-gaap:CreditFacility
us-gaap:LongtermDebtType
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency
us-gaap:LinesOfCreditFairValueDisclosure
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType
us-gaap:LoansAndLeasesReceivableAllowance

us-gaap:LoansPledgedAsCollateral

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
us-gaap:CreditFacility, us-gaap:LongtermDebtType, us-gaap:VariableRate
us-gaap:LongTermDebtPercentageBearingVariableInterestRate

us-gaap:MarketableSecurities
us-gaap:StatementBusinessSegments

us-gaap:MinorityInterestInOperatingPartnerships

us-gaap:MortgageLoansOnRealEstateCommercialAndConsumerNet
us-gaap:StatementBusinessSegments

us-gaap:NetRentableArea

us-gaap:NoncontrollingInterestInVariableInterestEntity
us-gaap:ConsolidatedEntities
us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities

us-gaap:NotesReceivableFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType
us-gaap:NotesReceivableGross

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLossCarryforwards
us-gaap:IncomeTaxAuthority

us-gaap:OtherIntangibleAssetsNet
us-gaap:StatementBusinessSegments

us-gaap:OtherLiabilities
us-gaap:ConsolidatedEntities
us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency
us-gaap:OtherLiabilitiesFairValueDisclosure
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FairValueByMeasurementBasis
us-gaap:OtherReceivables
us-gaap:LongtermDebtType
us-gaap:PledgedAssetsNotSeparatelyReportedRealEstate

us-gaap:PropertySubjectToOrAvailableForOperatingLeaseNumberOfUnits

us-gaap:RealEstateAccumulatedDepreciation

us-gaap:RealEstateGrossAtCarryingValue

us-gaap:RealEstateHeldforsale
us-gaap:BalanceSheetLocation

us-gaap:RealEstateInvestmentPropertyAccumulatedDepreciation

us-gaap:RealEstateInvestmentPropertyAtCost

us-gaap:RealEstateInvestmentPropertyNet
us-gaap:ConsolidatedEntities
us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:StatementBusinessSegments
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:BusinessAcquisition
us-gaap:RealEstateInvestmentsJointVentures

us-gaap:ReceivableWithImputedInterestNetAmount

us-gaap:RedeemableNoncontrollingInterestEquityCommonCarryingAmount
us-gaap:StatementClassOfStock
us-gaap:RedeemableNoncontrollingInterestEquityPreferredCarryingAmount

us-gaap:RentalProperties

us-gaap:RestrictedCashAndCashEquivalents

us-gaap:SecuredDebt
us-gaap:ConsolidatedEntities
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency
us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:LongtermDebtType
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency
us-gaap:SeniorNotes
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:StatementEquityComponents
us-gaap:SharePrice
us-gaap:LongtermDebtType
us-gaap:SharesSubjectToMandatoryRedemptionSettlementTermsAmount

us-gaap:TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
us-gaap:StatementEquityComponents
us-gaap:StatementClassOfStock
us-gaap:TemporaryEquitySharesIssued

us-gaap:TransfersOfFinancialAssetsAccountedForAsSaleInitialFairValueOfAssetsObtainedAsProceeds

us-gaap:UnsecuredDebt
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency
us-gaap:LongtermDebtType

Plots across concepts


IncomeStatement
Income Loss From Continuing Operations 
Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
Balance Sheet
Operating Lease Liability
Assets
Cash And Cash Equivalents At Carrying Value
Current Assets
Cash And Cash Equivalents At Carrying Value
NonCurrent Assets
Goodwill
Liabilities
Operating Lease Liability
Noncurrent Liabilities
Minority Interest
Stockholders Equity
Common Stock Value
CashFlow
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInOperatingActivities
Net Income Loss
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Repayments Of Long Term Debt
Shares
Weighted Average Number Of Diluted Shares Outstanding
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Due Next Twelve Months

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
us-gaap:CommonStockValue ██▇▇▇▆▆▆▆▆▆▆▅▅▅▅▅▅▅▅▄▄▃▃▃▃▃▃▂▂▂▂▂▂▁▁▁1.1591.1181.0760.9830.9830.9330.9320.9070.9070.8650.8640.8640.8090.7990.7970.7930.790.7370.7320.730.6860.6460.5840.5450.5380.5350.4860.480.4110.4040.3610.3610.3790.3770.3160.3150.283
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding █▁112.082108.161NA97.54996.16592.935NA90.33287.56486.033NA82.08180.11679.464NA78.80875.15473.12NA69.06964.75758.126NA53.66553.23752.892NA41.72240.99337.154NA36.14335.90730.789NA26.93826.485
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▁112.082107.932NA97.54295.85992.41NA89.84787.1385.52NA81.59979.61278.855NA78.36974.67872.677NA68.65564.75757.736NA53.2252.84652.498NA41.7140.97937.14NA36.12835.88730.774NA26.93826.469
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount NA5.714NANANA4.924NANANA6.647NANANA6.228NANANA7.033NANANA7.735NANANA11.488NANANA0.00388NA3.7813.7813.749NA4.0533.708
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities sui:AspenPreferredOpUnitsNA0.406NANANA1.284NANANA1.284NANANA1.284NANANA1.284NANANA1.284NANANA1.284NANANA0.001325NA0.5260.5260.526NA0.5260.526
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities sui:CommonOpUnitsNA2.596NANANA2.408NANANA2.719NANANA2.739NANANA2.75NANANA2.863NANANA2.544NANANA0.002069NA2.0692.0692.069NA2.072.071
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities sui:SeriesA1PreferredOpUnitsNA0.716NANANA0.303NANANA0.328NANANA0.342NANANA0.362NANANA0.387NANANA0.42NANANA0.000446NA1.1111.1111.111NA1.1111.111
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities sui:SeriesA3PreferredOpUnitsNA0.075NANANA0.04NANANA0.04NANANA0.04NANANA0.04NANANA0.04NANANA0.04NANANA4e-05NA0.0750.0750.043NA0.00.0
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities sui:SeriesCpreferredOPunitsNA0.34NANANA0.31NANANA0.314NANANA0.316NANANA0.328NANANA0.34NANANA0.0NANANANANANANANANANANA
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities sui:SeriesDPreferredOPUnitsNA0.391NANANA0.489NANANA0.489NANANA0.0NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities sui:SeriesEPreferredOPUnitsNA0.062NANANA0.09NANANA0.0NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities sui:SeriesFPreferredOPUnitsNA0.056NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities sui:SeriesGPreferredOPUnitsNA0.155NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities sui:SeriesHPreferredOPUnitsNA0.355NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities sui:SeriesIPreferredOPUnitsNA0.562NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:EarningsPerShareBasic ▆▃▂▅▄▁▃▄▄▄▂▄▃▃▂▃▃▃▂▃▂▃█▄▃▃▁▄▂▃▂▂▂▃▂▂▂0.980.230.070.830.61-0.170.310.630.460.40.110.560.250.380.090.310.160.29-0.020.27-0.120.141.570.530.230.13-0.270.540.120.210.00.10.030.19-0.05-0.020.06
us-gaap:EarningsPerShareDiluted ▆▃▂▅▄▁▃▄▄▄▂▄▃▃▂▃▃▃▂▃▂▃█▄▃▃▁▄▂▃▂▂▂▃▂▂▂0.980.230.070.830.61-0.170.310.630.460.40.110.560.250.380.090.310.160.29-0.020.27-0.120.141.560.540.230.13-0.270.540.120.210.00.10.030.19-0.05-0.020.06
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
 Net profit Margin us-gaap:StatementBusinessSegments sui:RealPropertyOperationsSegmentNANA319.31336.681249.768254.243241.803298.194250.791233.741216.52263.693216.869210.055193.163222.291194.362194.798NANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems us-gaap:OperatingSegments█▅▄▄▂▂▂▃▂▂▁▂▁▁594.205433.424377.593392.009297.357304.039295.514352.671305.018278.85265.868316.935265.266251.699NANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sui:HomeSalesAndHomeRentalsSegmentNANA64.95563.83353.49856.05960.01664.24961.65453.58957.48359.7254.56547.92NANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sui:MH█▁271.72245.474NANA217.861221.161NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sui:Marinas█▁155.73295.587NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sui:RV█▁166.75392.363NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sui:RealPropertyOperationsSegmentNANA312.638328.176243.859247.98235.498288.422243.364225.261208.385257.215210.701203.779NANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
us-gaap:ComprehensiveIncomeNetOfTax █▄▃▆▅▁▄▅▄▄▂▅▃▄▃▄▃▃▂▃▂▃▇▄▃▃▂▃▂▃▂▂▂▃▂▂▂114.96928.50115.12685.09864.344-21.5131.45957.38840.70937.5846.50749.43820.42929.7359.03729.69417.30825.0083.50617.45-4.34211.50293.1237.57217.74311.984-10.39924.8917.15210.1662.4186.0793.3197.9440.179-0.0252.548
us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest █▃▂█▅▁▃▇▄▃▂▆▄▄▃▄▃▃▂▃▂▃█▄▃▃▁▄▃▃▃▂▂▃▂▂▃7.10.3350.1796.8042.883-1.2680.7835.3462.4941.118-0.1484.1672.1472.0050.8551.9121.4111.121-0.180.553-0.6950.2766.9222.1250.7430.264-1.6181.8510.4580.7920.311-0.020.040.419-0.781-0.2060.274
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest █▃▃▇▅▁▄▅▄▄▂▅▃▄▃▄▃▃▂▃▂▃▇▄▃▃▂▃▂▃▂▂▂▃▂▂▂122.06928.83615.30591.90267.227-22.77832.24262.73443.20338.7026.35953.60522.57631.749.89231.60618.71926.1293.32618.003-5.03711.778100.04239.69718.48612.248-12.01726.7427.6110.9582.7296.0593.3598.363-0.602-0.2312.822
us-gaap:CostsAndExpenses █▇▆▅▄▄▄▅▄▄▄▄▄▃▄▄▃▃▃▃▃▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁509.045418.688393.06320.967275.715274.781293.835305.553272.187252.715257.131273.04245.091221.871234.85234.995222.171209.729211.569226.688195.781162.638165.697163.771154.862149.126139.267112.655108.993100.651102.976101.84197.2995.44992.17883.91581.747
us-gaap:GainsLossesOnExtinguishmentOfDebt -8.108NA0.00.0-1.93-3.279-3.027-12.755-0.07-0.6530.633-0.939-1.522-0.196-5.260.0-0.293-0.5-1.10.00.00.00.00.0-2.8NANANANANANANANANANANANA
 us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:ConsolidationItems us-gaap:MaterialReconcilingItems-8.108NA0.00.0-1.93-3.279-3.027-12.755-0.07-0.653-1.402-0.528-1.522-0.196NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:MaterialReconcilingItems,sui:RealPropertyOperationsSegmentNANA0.00.0-1.93-3.279-3.027-12.755-0.07-0.653-1.402-0.528-1.522-0.196NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType sui:MaturesDecember12021598PercentInterestRate,us-gaap:SecuredDebtNA1.93NA0.01930.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType sui:MaturesMarch120215.837PercentInterestRateMemberDomainDomain,us-gaap:SecuredDebtNA3.403NA0.00.0033.4NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:GeneralAndAdministrativeExpense █▇▆▅▅▄▄▄▄▄▃▃▄▃▃▃▃▃▃▃▃▂▂▂▂▂▂▁▂▂▁▁▁▁▁▁▁45.12738.20331.79527.24326.73325.51725.40522.97523.69721.88720.00620.12721.44219.93118.52318.26719.98917.93217.17716.57516.54313.79212.5914.5814.44313.34411.5139.28411.51310.3129.2958.1549.1819.6627.1547.1767.42
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments █▄▂▇▄▄▃▆▅▄▃▅▄▄▃▄▃▄▃▄▂▃▂▄▃▂▁▃▃▃▂▃▂▃▂▂▂94.81823.327-8.79579.54727.55135.5217.98456.8940.25834.61516.87350.49826.33536.0457.17633.2515.72824.6717.06523.013-4.98212.0062.54121.58411.0763.528-19.59512.786.39410.531.9815.362.8617.93-1.193-0.7910.632
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems us-gaap:MaterialReconcilingItems█▁1.245-0.229NA-0.1070.1190.45NA0.420.2720.214NA0.2130.2250.174NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:MaterialReconcilingItems,sui:HomeSalesAndHomeRentalsSegmentNANANA0.1540.1510.154NA0.0920.0930.092NA0.0780.090.078NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:MaterialReconcilingItems,sui:RealPropertyOperationsSegmentNANANA-0.261-0.0320.296NA0.3280.1790.122NA0.1350.1350.096NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeTaxesPaidNet █▁▃▅▄▃▃▃▅▂▂▃▄▃▂▁▃▃▂1.621-0.4840.0460.6280.3660.0750.130.1150.763-0.06-0.280.0610.5450.135-0.141-0.4030.2340.116-0.16NANANANANANANA0.022NANA0.292-0.003-0.0610.2190.00.00.00.23
 us-gaap:InterestExpense us-gaap:ConsolidationItems us-gaap:MaterialReconcilingItems▇█▅▁▂▃▃▃▄▄▁▄▃▂37.68139.51735.01330.21431.42832.41633.25932.21933.66134.01430.76833.93232.2631.138NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:InterestExpense us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:MaterialReconcilingItems,sui:HomeSalesAndHomeRentalsSegmentNANA0.150.0050.0060.0080.0140.0050.0050.0040.0060.0050.0060.004NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:InterestExpense us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:MaterialReconcilingItems,sui:RealPropertyOperationsSegmentNANA34.86330.20931.42232.40833.24532.21433.65634.0130.76233.92732.25431.134NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:InterestExpenseDebt ▇█▇▅▆▆▆▆▆▆▆▆▆▅▅▆▆▅▅▆▅▄▄▄▄▄▂▂▁▁▂▁▁▂▁▁▁37.68139.51735.01330.21431.42832.41633.25932.21933.66134.01432.1733.52132.2631.13831.36332.08532.35831.32230.64133.828.42826.29428.06627.45326.75125.38919.62218.61917.9417.5918.45117.82318.20118.86417.21517.06616.781
us-gaap:InterestIncomeOperating ▂▂▁▂▂▁▃▆▆▆▆▇▇▇▇█▆▆▆▆▆▄▄▄▄▄▄▃▃▃▃▃▃▂▂▂▂2.7192.6312.512.6242.6352.353.3684.774.9194.85.0045.2565.2775.3165.5715.925.0434.6464.7914.7054.6723.9454.0743.9873.8933.9844.0373.5453.5263.3543.4863.4423.1822.9633.1112.8472.655
us-gaap:InterestPaidNet ██▇▇▆▆▇▆▇▆▆▆▆▆▆▆▆▆▅▇▅▅▃▆▄▃▂▁▁▁▂▁▁▁▇▁▁38.28239.45835.93934.22533.35832.46435.06532.97834.23632.71131.35232.15332.24630.40231.68430.65331.07230.63730.13435.28829.24526.81322.31630.65425.56721.45216.99515.14614.40913.73916.67314.81515.10614.67436.56614.31513.509
us-gaap:NetIncomeLoss █▃▂▆▅▁▃▅▄▄▂▄▃▄▂▃▃▃▂▃▂▂▇▄▃▂▁▃▂▂▂▂▂▂▂▂▂110.7724.7827.58681.20458.91-16.08628.54757.4340.81334.7639.03946.49220.8430.4277.43826.0714.46323.283-1.621.094-5.60610.22989.39936.2716.38210.955-13.06924.1856.4429.360.0825.2632.5497.258-1.432-0.651.663
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest ▁▅▅▁▃▅▅█▆▆▅▇▆▆▅▆▆▆-7.044-0.295-0.096-6.907-2.8610.9620.725.4222.5851.0410.0514.0712.2272.0940.8761.7761.3151.088NA0.879-0.695NANANANANANANANANANA0.00.00.00.00.00.0
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic █▃▂▆▅▁▃▅▄▄▂▄▃▄▂▃▃▃▂▃▁▂▇▃▃▂▁▃▂▂▂▂▂▂▂▂▂110.7724.7827.58681.20458.91-16.08628.54757.00240.38534.3319.03946.0620.40829.9867.43824.11512.36421.104-1.618.897-7.8037.87589.39928.76312.2946.869-13.06922.6714.9287.8460.0823.7491.0355.744-1.432-0.651.663
us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted █▁110.07924.63NA80.66858.91-16.086NA57.00240.38534.3319.86946.0620.40829.9867.43824.11512.36421.104-1.618.897-7.8037.87587.64228.76312.2946.869-12.99322.6714.9287.8460.0823.7491.0355.744-1.432-0.651.663
 us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems us-gaap:OperatingSegments█▄▃▄▂▂▂▃▂▂▁▂▁▁303.694220.442198.276221.711172.338179.798167.024197.144171.398164.445150.541175.457148.011149.052NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sui:HomeSalesAndHomeRentalsSegmentNANA22.46321.64719.63220.53319.58121.92322.12819.52419.02419.79218.31816.122NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sui:MH█▁160.092148.45NANA134.43136.089NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sui:Marinas█▁62.81731.392NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sui:RV█▁80.78540.6NANA35.10740.219NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sui:RealPropertyOperationsSegmentNANA175.813200.064152.706159.265147.443175.221149.27144.921131.517155.665129.693132.93NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherNonoperatingIncomeExpense ▄▄▅▃▄▅█▂▅▆▃▆▄▃▇▇▅▅▁▅▅▅-0.66-1.099-0.39-2.524-0.552-0.3024.946-4.4081.0211.898-3.2391.231-1.828-2.6173.6423.3450.8750.752-5.8480.00.00.0NANANANANANANANANANA-0.158-0.121-0.042-0.0520.051
 us-gaap:OtherNonoperatingIncomeExpense us-gaap:ConsolidationItems us-gaap:MaterialReconcilingItems▅▅▅▃▅▆▆▁▇█▂▇▄▃-0.66-1.099-0.39-2.524-0.552-0.3020.389-4.4081.0211.898-3.2391.231-1.828-2.617NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OtherNonoperatingIncomeExpense us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:MaterialReconcilingItems,sui:HomeSalesAndHomeRentalsSegmentNANA0.0010.00.00.001-0.143-0.007-0.040.038-0.040.0010.001-0.001NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OtherNonoperatingIncomeExpense us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:MaterialReconcilingItems,sui:RealPropertyOperationsSegmentNANA-0.391-2.524-0.552-0.3030.532-4.4011.0611.86-3.1991.23-1.829-2.616NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ProfitLoss █▃▂▆▅▁▃▅▄▄▂▄▃▄▂▃▃▃▂▃▂▂▇▄▃▂▁▃▂▂▂▂▂▂▂▂▂120.84927.9419.81889.75663.355-15.47830.68564.45145.11637.12710.67251.71524.1733.60110.34228.95816.97425.5451.50123.23-5.03811.778100.04239.69718.48612.248-12.01726.7427.6110.8612.6335.973.2748.271-0.602-0.2752.479
us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax █▆█▅▄▄▆▅▄▄▅▆▅▅▄▅▄▄▄▅▃▃▃▃▃▃▂▂▂▂▁▂▁▁▁▁▁405.905330.613384.265284.373231.484237.785301.819256.423226.099216.779274.004323.538271.426257.916242.026268.245237.899234.4218.634249.701190.799174.644168.238185.355165.938152.654119.672125.435115.387111.181104.957107.201100.151103.37990.98583.12482.379
us-gaap:Revenues █▆▅▅▄▄▄▅▄▄▄▄▄▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁603.863442.015384.265400.514303.266310.302301.819362.443312.445287.33274.004323.538271.426257.916242.026268.245237.899234.4218.634249.701190.799174.644168.238185.355165.938152.654119.672125.435115.387111.181104.957107.201100.151103.37990.98583.12482.379
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
us-gaap:Assets ██▇▆▆▅▅▅▅▅▄▄▄▄▄▄▄▄▄▄▄▃▃▃▃▃▂▂▁▁▁▁▁▁▁▁▁12040.9911454.20911206.5868335.7178348.6598209.0477802.067397.8547222.0847098.6626710.0266653.7266492.3486149.6536111.9576157.8366178.7135902.4475870.7765904.7065823.1914562.8864190.5514114.6034032.8493844.6412937.6922430.7972143.982108.2321999.2361936.6911916.7681913.81754.1171501.2261412.319
us-gaap:Liabilities ███▅▅▆▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▃▃▄▃▃▂▁▁▁▁▁▁▁▁▁▁5099.5635101.5125314.8793791.9223845.3084346.1273848.1043720.9833542.1883846.3253479.1123367.2853736.6213471.0963405.2043351.0213373.6953478.1323441.6053429.7433645.7442591.9032571.1732786.6532617.0712463.3191997.541517.2921572.3761542.4521602.1621516.9951477.6481452.2331541.1271348.4091382.46
us-gaap:LiabilitiesAndStockholdersEquity ██▇▆▆▅▅▅▅▅▄▄▄▄▄▄▄▄▄▄▄▃▃▃▃▃▂▂▁▁▁▁▁▁▁▁▁12040.9911454.20911206.5868335.7178348.6598209.0477802.067397.8547222.0847098.6626710.0266653.7266492.3486149.6536111.9576157.8366178.7135902.4475870.7765904.7065823.1914562.8864190.5514114.6034032.8493844.6412937.6922430.7972143.982108.2321999.2361936.6911916.7681913.81754.1171501.2261412.319
us-gaap:StockholdersEquity █▇▇▆▆▅▅▅▅▄▄▄▄▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▂▂▁▁▁▁▁▁▁6555.2085992.2355525.2764358.7994347.5643724.8623819.7243499.8263507.2543078.8953106.8233159.1382629.2882571.6322598.4312696.062691.0142294.9912295.6112334.2822033.1151810.4411455.811162.7571127.1731141.237891.739901.984559.678551.073380.507401.369418.701439.156192.522130.2495.78
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
us-gaap:CashAndCashEquivalentsAtCarryingValue NANA83.0NANANA22.126.19828.70421.94650.311113.55620.04615.15310.127137.448241.64610.9198.16469.82931.441410.40845.08623.91711.93124.88183.459259.1527.629.3054.7534.9556.48861.04529.50838.7244.499
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▃▃▂▃██▁▁▁▁▂▃▁▁▁▄▆▁▁119.612120.17498.294115.529389.214394.7434.8341.72646.03834.17562.262129.09436.80127.42423.509157.391262.25826.7125.313NANANA59.473NANANANANANANANANANANANANANA
us-gaap:Land █▇▇▅▅▅▅▅▅▄▄▄▄▄▄▄▄▄▄▄▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁2412.6292190.7622119.3641441.3721433.2721418.9851414.2791311.1031286.9521279.3061201.9451187.5021131.9561114.6091107.8381079.7081066.7921052.3841027.9761072.964458.349456.38451.34457.279438.675373.319309.386216.276220.019212.901194.404191.589191.603193.178182.682156.361153.397
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
us-gaap:FurnitureAndFixturesGross █▇▇▅▅▄▄▄▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁529.549491.735447.039338.236312.139285.922282.874251.363215.61208.177201.09174.315162.961148.197144.953140.894137.546133.772130.127125.603107.123104.855102.74698.56796.36689.61181.58667.24567.97967.43265.08660.13958.39755.92854.35443.76842.394
us-gaap:AmortizationOfIntangibleAssets ▇█▇▃▃▃▃▃▃▃▂▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▁▂▂▂▂▂▂▂10.88712.62510.0073.9323.7843.6563.8633.9864.0053.8772.5484.2253.5873.7323.5523.7543.8143.8023.7974.3212.2942.2822.4082.471.9092.0280.0941.31.2721.2781.2921.2331.2551.084NANANA
us-gaap:Goodwill █▅▁448.317438.842428.833NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IntangibleAssetsNetIncludingGoodwill ▁▄█295.663300.554305.611NANANA66.948NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
us-gaap:LongTermDebt █▇▁▆▁201.9180.04.77097154.71.4NA3.442282NANANA3121.947NANANA3070.156NANANA3091.282NANANANANANANA1813.886NANANA1491.449NANA1355.492NANANA
us-gaap:MinorityInterest ███▆▆▆▅▅▆▆▆▆▆▆▆▆▆▆▆▆▆▇▇▇▆▄▅▃▃▃▃▃▃▄▃▁▁100.61699.403102.05272.44771.80561.60856.22857.39458.08958.01460.49963.56262.69464.01965.25667.50970.53963.95666.61670.54873.83978.04880.77175.57874.37126.63948.41311.52111.92614.70716.56718.32720.41922.41120.468-22.98-21.469
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo █▁6.7044.844NA2.842NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree █▁6.7334.931NA2.863NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour █▁7.1025.251NA2.993NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive █▁7.0935.281NA3.3NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive █▁98.16661.397NA32.774NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
us-gaap:StockholdersEquity █▇▇▆▆▅▅▅▅▄▄▄▄▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▂▂▁▁▁▁▁▁▁6555.2085992.2355525.2764358.7994347.5643724.8623819.7243499.8263507.2543078.8953106.8233159.1382629.2882571.6322598.4312696.062691.0142294.9912295.6112334.2822033.1151810.4411455.811162.7571127.1731141.237891.739901.984559.678551.073380.507401.369418.701439.156192.522130.2495.78
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest █▇▇▆▆▅▅▅▅▄▄▄▄▄▄▄▄▃▃▄▃▃▃▂▂▂▂▂▂▂▁▁▁▁▁▁▁6655.8246091.6385627.3284431.2464419.3693786.473875.9523557.223565.3433136.9093167.3223222.72691.9822635.6512663.6872763.5692761.5532358.9472362.2272404.832106.9541888.4891536.5811238.3351201.5441167.876940.152913.505571.604565.78397.074419.696439.12461.567212.99152.81729.859
us-gaap:CommonStockValue ██▇▇▇▆▆▆▆▆▆▆▅▅▅▅▅▅▅▅▄▄▃▃▃▃▃▃▂▂▂▂▂▂▁▁▁1.1591.1181.0760.9830.9830.9330.9320.9070.9070.8650.8640.8640.8090.7990.7970.7930.790.7370.7320.730.6860.6460.5840.5450.5380.5350.4860.480.4110.4040.3610.3610.3790.3770.3160.3150.283
us-gaap:AdditionalPaidInCapital █▇▇▆▆▅▅▅▅▄▄▄▄▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▂▂▁▁▁▁▁▁▁8163.0957618.1287087.6585851.385847.5985211.6785213.2644854.9584851.3234398.6414398.9494396.0923854.0573759.0663758.5333810.933780.5993346.9913321.4413313.9052980.3822706.6572319.3142079.1392038.2292031.0421754.7591709.3371359.3151329.6781141.591140.6251203.3731202.913940.202857.809714.052
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax █▇▇▄▃▁▅▄▅▄▃▅▄▅▆▆▅▄▄▃▅5.1974.0333.178-2.226-4.475-8.325-1.331-2.825-1.184-3.006-4.504-0.39-2.184-0.671.1021.531-0.981-2.63-3.181-4.8760.001NA0.0NANANA0.0-0.277-0.277-0.277-0.366-0.454-0.535-0.613-0.696-0.696-0.735
us-gaap:MinorityInterest ███▆▆▆▅▅▆▆▆▆▆▆▆▆▆▆▆▆▆▇▇▇▆▄▅▃▃▃▃▃▃▄▃▁▁100.61699.403102.05272.44771.80561.60856.22857.39458.08958.01460.49963.56262.69464.01965.25667.50970.53963.95666.61670.54873.83978.04880.77175.57874.37126.63948.41311.52111.92614.70716.56718.32720.41922.41120.468-22.98-21.469
us-gaap:StockIssuedDuringPeriodValueNewIssues NANANA-1.622638.669-7.14NA-1.549447.741-4.3210.0132.092.6-3.2960.025.3110.020.5560.00150.04710.0344NA40.840.81.721.5NANANANANANANANANANANA
 us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents sui:TotalEquity█▁537.597522.264NANA638.669-7.14NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents us-gaap:AdditionalPaidInCapital█▁537.557522.222NA-1.622628.506-7.141NA-1.549447.704-4.322-0.612538.12989.255-3.29829.52525.309437.73221.4585.324331.194259.666384.99231.4339.0665.376288.38830.601348.8828.514186.945-0.02-0.187-0.169262.073-0.16143.418-0.118
 us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents us-gaap:CommonStock▁█0.040.042NANA0.0490.001NANA0.0370.0010.00.0540.010.0020.0040.0020.0520.0050.00.0440.0380.0620.0390.0070.0030.0490.0060.0690.0070.0430.00.00.0020.0610.0010.0320.0
 us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents us-gaap:EquityNA522.264NA-1.622638.669-7.14NA-1.549447.741-4.321NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents us-gaap:Parent█▁537.597522.264NANA638.669-7.14NANA447.741-4.321NANANANANANANANANANANANANANANANANANANANANANANANANA143.45-0.118
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
us-gaap:NetCashProvidedByUsedInOperatingActivities █▇▃▅▆▄▃▅▅▄▂▄▄▃▂▃▃▃▂▂▃▂▂▂▂▂▁▂▂▂▁▂▂▁▁▁▁250.218220.4984.49162.431183.514118.51378.441138.449156.703103.14161.91102.522117.77780.90538.40270.18582.59770.56648.41461.23178.12250.92635.48554.38551.44940.94424.06132.14632.43944.67420.35733.88632.80727.63329.32414.44322.432
us-gaap:NetCashProvidedByUsedInInvestingActivities ▆▇▁▇▇▇▇▇▇▇▇█▇███████▃████▇▇██████▇▇██-579.508-285.978-1820.809-297.592-198.786-169.33-211.206-228.721-178.047-392.483-188.64-137.612-338.973-68.518-133.957-100.559-95.463-71.663-73.613-72.284-1423.365-45.25-9.979-98.353-92.682-212.17-302.083-51.853-58.101-138.668-82.103-49.631-78.339-142.339-223.877-64.227-35.375
us-gaap:NetCashProvidedByUsedInFinancingActivities ▃▂█▁▂▃▂▂▂▃▂▂▂▁▁▁▂▂▁▂▅▃▂▂▁▂▂▃▂▂▂▂▁▂▂▂▂328.4893.0021718.847-138.6689.556411.109125.74986.11232.922261.09760.327127.225230.817-8.464-31.811-73.966243.4723.862-36.549.548966.276359.646-4.33755.955-71.718212.648102.329271.23923.97798.54661.54414.212-9.025146.243185.33784.0091.467
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▁█-0.56227.533NA-273.685-5.526359.91NA-4.31211.863-28.087NA92.2939.3773.915NA-104.867235.5481.397NANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
us-gaap:DeferredIncomeTaxExpenseBenefit ▆▅▁▂▅▅▄█▅▄▅▅▇▄▇▅▄▄▃▆▆▆0.066-0.147-0.761-0.562-0.112-0.13-0.2580.349-0.096-0.217-0.073-0.20.112-0.30.163-0.1-0.364-0.3-0.40.00.00.0NANANANANANANANANANANANANANANA
us-gaap:DepreciationDepletionAndAmortization ██▇▅▅▅▆▅▅▅▅▄▄▄▄▄▄▄▄▄▃▃▃▃▂▃▃▂▂▂▂▂▁▁▁▁▁126.423123.304117.42388.49987.26583.68998.82676.53276.15376.55681.0771.98267.77366.43771.81764.23262.72162.76662.20561.48349.6748.41247.5344.69541.41144.00144.87529.91730.04528.88929.96228.7926.06424.85125.34322.09221.067
us-gaap:NetCashProvidedByUsedInOperatingActivities █▇▃▅▆▄▃▅▅▄▂▄▄▃▂▃▃▃▂▂▃▂▂▂▂▂▁▂▂▂▁▂▂▁▁▁▁250.218220.4984.49162.431183.514118.51378.441138.449156.703103.14161.91102.522117.77780.90538.40270.18582.59770.56648.41461.23178.12250.92635.48554.38551.44940.94424.06132.14632.43944.67420.35733.88632.80727.63329.32414.44322.432
us-gaap:NetIncomeLoss █▃▂▆▅▁▃▅▄▄▂▄▃▄▂▃▃▃▂▃▂▂▇▄▃▂▁▃▂▂▂▂▂▂▂▂▂110.7724.7827.58681.20458.91-16.08628.54757.4340.81334.7639.03946.49220.8430.4277.43826.0714.46323.283-1.621.094-5.60610.22989.39936.2716.38210.955-13.06924.1856.4429.360.0825.2632.5497.258-1.432-0.651.663
us-gaap:ProfitLoss █▃▂▆▅▁▃▅▄▄▂▄▃▄▂▃▃▃▂▃▂▂▇▄▃▂▁▃▂▂▂▂▂▂▂▂▂120.84927.9419.81889.75663.355-15.47830.68564.45145.11637.12710.67251.71524.1733.60110.34228.95816.97425.5451.50123.23-5.03811.778100.04239.69718.48612.248-12.01726.7427.6110.8612.6335.973.2748.271-0.602-0.2752.479
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
us-gaap:NetCashProvidedByUsedInInvestingActivities ▆▇▁▇▇▇▇▇▇▇▇█▇███████▃████▇▇██████▇▇██-579.508-285.978-1820.809-297.592-198.786-169.33-211.206-228.721-178.047-392.483-188.64-137.612-338.973-68.518-133.957-100.559-95.463-71.663-73.613-72.284-1423.365-45.25-9.979-98.353-92.682-212.17-302.083-51.853-58.101-138.668-82.103-49.631-78.339-142.339-223.877-64.227-35.375
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
us-gaap:NetCashProvidedByUsedInFinancingActivities ▃▂█▁▂▃▂▂▂▃▂▂▂▁▁▁▂▂▁▂▅▃▂▂▁▂▂▃▂▂▂▂▁▂▂▂▂328.4893.0021718.847-138.6689.556411.109125.74986.11232.922261.09760.327127.225230.817-8.464-31.811-73.966243.4723.862-36.549.548966.276359.646-4.33755.955-71.718212.648102.329271.23923.97798.54661.54414.212-9.025146.243185.33784.0091.467
us-gaap:ProceedsFromIssuanceOfLongTermDebt NANA261.7840.00.0230.0400.0258.7210.0265.021.664228.3360.00.0100.0721.23380.743.10863.471144.868747.8178.09650.35261.5559.998255.136135.90172.6749.117105.549151.1398.8468.5496.973108.85128.8620.608
us-gaap:RepaymentsOfLongTermDebt ▂▁▁▂▃▆▇▆▂█▂▂█▂▃▁▁▂▄▃▃▁▅▁▄▂▁▄▁▁▇▁▁▃▁▃▂20.11214.79910.04218.6967.395134.203180.649148.6622.667200.89225.37443.536190.96138.88352.40313.16416.56442.29690.42272.82260.4198.249104.437.15677.90636.1857.6979.4014.4813.697186.7324.3058.25270.11111.247.28318.972
 us-gaap:PaymentsOfDividendsCommonStock us-gaap:StatementClassOfStock us-gaap:CommonStock▁█3.35494.966NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PaymentsOfDividendsCommonStock us-gaap:StatementClassOfStock,us-gaap:SubsequentEventType us-gaap:CommonStock,us-gaap:SubsequentEventNA87.084NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:Dividends ▆██▄▆▆▅▄▅▆▁▆▄▆▄▄▆▅▄▅▅▆▅▄▄▆▄▆▄▆▄▄3.2858.0957.4190.082.9944.7872.010.0412.8653.536-6.4763.8850.7693.337-1.260.2073.4610.8590.0992.8682.6753.9842.480.4930.3143.4570.4714.5460.4713.5630.1360.012NANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:LongtermDebtType us-gaap:SecuredDebtNANA2.662e-062.995e-06NA2.995e-084.026e-082.925e-084.17e-084.17e-085.66e-084.1e-08NANA4.2500000000000003e-08NANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:Range,us-gaap:LongtermDebtType,us-gaap:VariableRate srt:Maximum,sui:LineOfCreditManufacturedHomeFloorPlanFacility,us-gaap:PrimeRateNANA6e-066e-06NA5e-065.0000000000000004e-086e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1159000.01118000.01076000.0983000.0983000.0933000.0932000.0907000.0907000.0865000.0864000.0864000.0809000.0799000.0797000.0793000.0790000.0737000.0732000.0730000.0686000.0646000.0584000.0545000.0538000.0535000.0486000.0480000.0411000.0404000.0361000.0361000.0379000.0377000.0316000.0315000.0283000.0283000.0236000.0235000.0233000.0217000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value1121089796929087868280797875736964585353524140373635302626252121221919
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value1121079795928987858179787874726864575352524140373635302626252121201919
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount


Antidilutive
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-03-31
Value5.7144.9246.6476.2287.0337.735110.003883.7813.7813.7494.0533.7083.7730.578
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

sui:AspenPreferredOpUnits


Antidilutive
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-03-31
Value0.4061.2841.2841.2841.2841.2841.2840.0013250.5260.5260.5260.5260.5261.1110.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount7.126.119.320.618.316.611.234.113.913.914.013.014.229.40.0

sui:CommonOpUnits


Antidilutive
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-03-31
Value2.5962.4082.7192.7392.752.8632.5440.0020692.0692.0692.0692.072.0712.0720.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount45.448.940.944.039.137.022.153.354.754.755.251.155.954.90.0

sui:SeriesA1PreferredOpUnits


Antidilutive
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value0.7160.3030.3280.3420.3620.3870.420.0004461.1111.1111.1111.1111.1111.111
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount12.56.24.95.55.15.03.711.529.429.429.627.430.029.4

sui:SeriesA3PreferredOpUnits


Antidilutive
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value0.0750.040.040.040.040.040.044e-050.0750.0750.0430.00.00.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount1.30.80.60.60.60.50.31.02.02.01.10.00.00.0

sui:SeriesCpreferredOPunits


Antidilutive
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-31
Value0.340.310.3140.3160.3280.340.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount6.06.34.75.14.74.40.0

sui:SeriesDPreferredOPUnits


Antidilutive
Period End2021-03-312020-03-312019-03-312018-03-31
Value0.3910.4890.4890.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount6.89.97.40.0

sui:SeriesEPreferredOPUnits


Antidilutive
Period End2021-03-312020-03-312019-03-31
Value0.0620.090.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount1.11.80.0

sui:SeriesFPreferredOPUnits


Antidilutive
Period End2021-03-31
Value0.056
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount1.0

sui:SeriesGPreferredOPUnits


Antidilutive
Period End2021-03-31
Value0.155
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount2.7

sui:SeriesHPreferredOPUnits


Antidilutive
Period End2021-03-31
Value0.355
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount6.2

sui:SeriesIPreferredOPUnits


Antidilutive
Period End2021-03-31
Value0.562
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount9.8

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.980.230.070.830.61-0.170.310.630.460.40.110.560.250.380.090.310.160.29-0.020.27-0.120.141.570.530.230.13-0.270.540.120.2100.10.030.19-0.05-0.020.060.21-0.1-0.02-0.040.12-0.02-0.07-0.130.07
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.980.230.070.830.61-0.170.310.630.460.40.110.560.250.380.090.310.160.29-0.020.27-0.120.141.560.540.230.13-0.270.540.120.2100.10.030.19-0.05-0.020.060.21-0.1-0.02-0.040.11-0.02-0.07-0.130.07
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value11428158564-21.51315740376.5074920299.0372917253.50617-4.3421193371711-10.399247.152102.4186.0793.3197.9440.179-0.0252.5486.188-1.2690.413-0.8212.7660.178-1.637-2.741
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating4228.41083.30.03243.12441.9-915.30.01203.1827.6783.00.0940.6387.1559.30.0501.6343.2538.30.0370.9-92.9291.60.0942.4455.8300.80.0702.1202.8303.10.0176.6104.3268.10.0-0.90.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value7.10.3350.1796.8042.883-1.2680.7835.3462.4941.118-0.1484.1672.1472.0050.8551.9121.4111.121-0.180.553-0.6950.2766.9222.1250.7430.264-1.6181.8510.4580.7920.311-0.020.040.419-0.781-0.2060.2740.461-0.439-0.212-0.1470.222-0.049-0.273-0.431
Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating261.112.70.0259.3109.4-54.00.0112.150.723.30.079.340.737.70.032.328.024.10.011.8-14.97.00.053.319.16.60.052.213.023.60.0-0.61.314.10.0-7.20.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value12228159167-22.778326243386.3595322319.8923118263.32618-5.03711100391812-12.017267.61102.7296.0593.3598.363-0.602-0.2312.8226.649-1.7080.201-0.9682.9880.129-1.91-3.172
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating4489.51096.00.03502.42551.3-969.30.01315.2878.3806.30.01019.9427.8597.10.0533.9371.2562.40.0382.6-107.8298.60.0995.7474.9307.40.0754.4215.8326.70.0176.0105.6282.20.0-8.10.00.00.00.00.00.00.00.00.0

Costs And Expenses

us-gaap:CostsAndExpenses

us-gaap:CostsAndExpenses


Costs
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value5094183933202752742933052722522572732452212342342222092112261951621651631541491391121081001021019795928381777875706767666865
Percentage of CostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating18721.815913.60.012232.010463.611692.80.06405.75533.45264.90.05194.84644.54173.60.03969.54405.54514.20.04818.04190.54122.60.04107.63978.03743.10.03177.93091.13000.90.02958.83057.53221.40.02947.50.00.00.00.00.00.00.00.00.00.0

Gains Losses On Extinguishment Of Debt

us-gaap:GainsLossesOnExtinguishmentOfDebt

us-gaap:GainsLossesOnExtinguishmentOfDebt


Gains
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312018-01-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value-8.1080.00.0-1.93-3.279-3.027-12.755-0.07-0.6530.633-0.939-1.522-0.196-0.2-5.260.0-0.293-0.5-1.10.00.00.00.00.0-2.8
Percentage of GainsLossesOnExtinguishmentOfDebt100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.00.00.00.00.0100.0
Percentage of InterestIncomeOperating-298.20.00.0-73.2-139.50.0-267.4-1.4-13.60.0-17.9-28.8-3.70.00.00.0-5.8-10.80.00.00.00.00.00.0-71.9

us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Gains
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-8.1080.00.0-1.93-3.279-3.027-12.755-0.07-0.653-1.402-0.528-1.522-0.196
Percentage of GainsLossesOnExtinguishmentOfDebt100.00.00.0100.0100.0100.0100.0100.0100.0-221.556.2100.0100.0
Percentage of InterestIncomeOperating-298.20.00.0-73.2-139.50.0-267.4-1.4-13.60.0-10.0-28.8-3.7
Percentage of InterestIncomeOperating us-gaap:MaterialReconcilingItems0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:MaterialReconcilingItems, sui:RealPropertyOperationsSegment


Gains
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.00.0-1.93-3.279-3.027-12.755-0.07-0.653-1.402-0.528-1.522-0.196
Percentage of GainsLossesOnExtinguishmentOfDebt0.00.0100.0100.0100.0100.0100.0100.0-221.556.2100.0100.0
Percentage of InterestIncomeOperating0.00.0-73.2-139.50.0-267.4-1.4-13.60.0-10.0-28.8-3.7
Percentage of InterestIncomeOperating us-gaap:MaterialReconcilingItems sui:RealPropertyOperationsSegment0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType

sui:MaturesDecember12021598PercentInterestRate, us-gaap:SecuredDebt


Gains
Period End2021-03-312020-09-302020-06-30
Value1.930.01930
Percentage of GainsLossesOnExtinguishmentOfDebt0.00.0-100000.0
Percentage of InterestIncomeOperating73.40.073244.8
Percentage of InterestIncomeOperating sui:MaturesDecember12021598PercentInterestRate us-gaap:SecuredDebt0.00.00.0

sui:MaturesMarch120215.837PercentInterestRateMemberDomainDomain, us-gaap:SecuredDebt


Gains
Period End2021-03-312020-09-302020-06-302020-03-31
Value3.4030.00.0033.4
Percentage of GainsLossesOnExtinguishmentOfDebt0.00.0-0.2-103.7
Percentage of InterestIncomeOperating129.30.00.1144.7
Percentage of InterestIncomeOperating sui:MaturesMarch120215.837PercentInterestRateMemberDomainDomain us-gaap:SecuredDebt0.00.00.00.0

General And Administrative Expense

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GeneralAndAdministrativeExpense


General
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value4538312726252522232120202119181819171716161312141413119.28411109.2958.1549.1819.6627.1547.1767.427.2677.3777.2476.7856.451
Percentage of GeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating1659.71452.00.01038.21014.51085.80.0481.7481.7456.00.0382.9406.3374.90.0308.6396.4386.00.0352.3354.1349.60.0365.7371.0334.90.0261.9326.5307.50.0236.9288.5326.10.0252.10.00.00.00.00.00.0

us-gaap:GeneralAndAdministrativeExpense us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


General
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
Value4538312726252522232120192119
Percentage of GeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0102.398.2100.099.1
Percentage of InterestIncomeOperating1659.71452.00.01038.21014.51085.80.0481.7481.7456.00.0376.0406.5371.7
Percentage of InterestIncomeOperating us-gaap:MaterialReconcilingItems0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:GeneralAndAdministrativeExpense us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:MaterialReconcilingItems, sui:HomeSalesAndHomeRentalsSegment


General
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4.0673.6542.2782.9613.0073.0092.9752.6533.132.8442.8522.57
Percentage of GeneralAndAdministrativeExpense12.813.48.511.611.813.112.612.115.614.113.312.9
Percentage of InterestIncomeOperating0.0139.386.5126.00.063.160.555.30.054.154.048.3
Percentage of InterestIncomeOperating us-gaap:MaterialReconcilingItems sui:HomeSalesAndHomeRentalsSegment0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MaterialReconcilingItems, sui:RealPropertyOperationsSegment


General
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value272324222219201917161817
Percentage of GeneralAndAdministrativeExpense87.286.691.588.488.286.987.487.986.784.186.786.2
Percentage of InterestIncomeOperating0.0899.0928.1959.80.0418.6421.3400.70.0321.9352.5323.3
Percentage of InterestIncomeOperating us-gaap:MaterialReconcilingItems sui:RealPropertyOperationsSegment0.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value9423-8.7957927357.984564034165026367.1763315247.06523-4.982122.54121113.528-19.595126.394101.9815.362.8617.93-1.193-0.7910.6325.696-2.434-0.321-2.0962.366-0.87-1.437-1.962.412
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating3487.2886.60.03031.51045.61511.50.01192.7818.4721.10.0960.8499.1678.00.0561.7311.9531.00.0489.1-106.6304.30.0541.4284.588.60.0360.5181.3314.00.0155.789.9267.60.0-27.80.00.00.00.00.00.00.00.00.00.0

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems

us-gaap:IncomeTaxExpenseBenefit

us-gaap:MaterialReconcilingItems


Income
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value1245000.0-229000.0-107000.0119000.0450000.0420000.0272000.0214000.0213000.0225000.0174000.0
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating45.8-8.7-4.14.519.18.85.54.54.14.33.3
Percentage of InterestIncomeOperating us-gaap:MaterialReconcilingItems0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:MaterialReconcilingItems, sui:HomeSalesAndHomeRentalsSegment


Income
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value154000.0151000.0154000.092000.093000.092000.078000.090000.078000.0
Percentage of IncomeTaxExpenseBenefit-143.9126.934.221.934.243.036.640.044.8
Percentage of InterestIncomeOperating5.95.76.61.91.91.91.51.71.5
Percentage of InterestIncomeOperating us-gaap:MaterialReconcilingItems sui:HomeSalesAndHomeRentalsSegment0.00.00.00.00.00.00.00.00.0

us-gaap:MaterialReconcilingItems, sui:RealPropertyOperationsSegment


Income
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-261000.0-32000.0296000.0328000.0179000.0122000.0135000.0135000.096000.0
Percentage of IncomeTaxExpenseBenefit243.9-26.965.878.165.857.063.460.055.2
Percentage of InterestIncomeOperating-9.9-1.212.66.93.62.52.62.61.8
Percentage of InterestIncomeOperating us-gaap:MaterialReconcilingItems sui:RealPropertyOperationsSegment0.00.00.00.00.00.00.00.00.0

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet

us-gaap:IncomeTaxesPaidNet


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312014-12-312014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value1621000.0-484000.046000.0628000.0366000.075000.0130000.0115000.0763000.0-60000.0-280000.061000.0545000.0135000.0-141000.0-403000.0234000.0116000.0-160000.022000.0292000.0-3000.0-61000.0219000.0000230000.090000.0-16000.0180000.0294000.065000.090000.091000.0
Percentage of IncomeTaxesPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating59.6-18.40.023.913.93.20.02.415.5-1.20.01.210.32.50.0-6.84.62.50.00.08.70.0-1.86.90.00.00.00.00.00.00.00.00.00.00.0

Interest Expense

us-gaap:InterestExpense us-gaap:ConsolidationItems

us-gaap:InterestExpense

us-gaap:MaterialReconcilingItems


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
Value3739353031323332333430333231
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating1385.81502.00.01151.41192.71379.40.0675.5684.3708.60.0645.6611.3585.7
Percentage of InterestIncomeOperating us-gaap:MaterialReconcilingItems0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:InterestExpense us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:MaterialReconcilingItems, sui:HomeSalesAndHomeRentalsSegment


Interest
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.150.0050.0060.0080.0140.0050.0050.0040.0060.0050.0060.004
Percentage of InterestExpense0.40.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating0.00.20.20.30.00.10.10.10.00.10.10.1
Percentage of InterestIncomeOperating us-gaap:MaterialReconcilingItems sui:HomeSalesAndHomeRentalsSegment0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MaterialReconcilingItems, sui:RealPropertyOperationsSegment


Interest
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value343031323332333430333231
Percentage of InterestExpense99.6100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating0.01151.31192.51379.10.0675.3684.2708.50.0645.5611.2585.7
Percentage of InterestIncomeOperating us-gaap:MaterialReconcilingItems sui:RealPropertyOperationsSegment0.00.00.00.00.00.00.00.00.00.00.00.0

Interest Expense Debt

us-gaap:InterestExpenseDebt

us-gaap:InterestExpenseDebt


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value37393530313233323334323332313132323130332826282726251918171718171818171716
Percentage of InterestExpenseDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating1385.81502.00.01151.41192.71379.40.0675.5684.3708.60.0637.8611.3585.70.0542.0641.6674.20.0718.4608.5666.50.0688.6687.2637.30.0525.2508.8524.40.0517.8572.0636.70.0599.4632.1

Interest Income Operating

us-gaap:InterestIncomeOperating

us-gaap:InterestIncomeOperating


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value2.7192.6312.512.6242.6352.353.3684.774.9194.85.0045.2565.2775.3165.5715.925.0434.6464.7914.7054.6723.9454.0743.9873.8933.9844.0373.5453.5263.3543.4863.4423.1822.9633.1112.8472.655
Percentage of InterestIncomeOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Interest Paid Net

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value3839353433323532343231323230313031303035292622302521161514131614151436141315141612121313
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating1407.91499.71431.81304.31266.01381.41041.1691.4696.0681.5626.5611.7611.1571.9568.7517.8616.1659.4629.0750.0626.0679.7547.8768.8656.7538.5421.0427.2408.7409.6478.3430.4474.7495.21175.4502.80.00.00.00.00.00.00.00.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value110247.5868158-16.086285740349.0394620307.438261423-1.621-5.6061089361610-13.069246.4429.360.0825.2632.5497.258-1.432-0.651.6635.377-2.223-0.373-0.892.4-0.368-1.403-2.4491.337
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating4073.9941.9302.23094.72235.7-684.5847.61204.0829.7724.2180.6884.6394.9572.4133.5440.4286.8501.1-33.4448.3-120.0259.32194.4909.7420.8275.0-323.7682.2182.7279.12.4152.980.1245.0-46.0-22.80.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementBusinessSegments

sui:HomeSalesAndHomeRentalsSegment


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-8.717-6.769-5.289-9.313-6.553-4.843-3.17-4.26-5.702-4.62-5.37-5.764-5.624-7.232-3.341-6.571-4.896-4.773-4.941-4.6157.242-1.858-5.666-6.433-6.533-7.454-4.355-6.075-6.918-3.313-3.852-4.159-4.093-4.552-3.751-4.203-4.824-4.59-3.966-3.676
Percentage of NetIncomeLoss-114.9-8.3-9.057.9-23.0-8.4-7.8-12.3-63.1-9.9-25.8-18.9-75.6-27.7-23.1-28.2306.0-22.688.1-45.18.1-5.1-34.6-58.750.0-30.8-67.6-64.9-8436.6-62.9-151.1-57.3285.8700.3-225.6-78.2217.01230.6445.6-153.2
Percentage of InterestIncomeOperating-347.3-258.0-200.7-396.3-194.6-101.5-64.4-88.8-113.9-87.9-101.8-108.4-101.0-122.2-66.3-141.4-102.2-101.4-105.8-117.0177.8-46.6-145.5-161.5-161.8-210.3-123.5-181.1-198.5-96.3-121.1-140.4-131.6-159.90.00.00.00.00.00.0
Percentage of InterestIncomeOperating sui:HomeSalesAndHomeRentalsSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

sui:RealPropertyOperationsSegment


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value168764-6.7733562433915512636133317295.49425-0.6651484382217-4.9453110158.5148.5766.401112.6613.9025.4149.582.6014.2173.0766.076
Percentage of NetIncomeLoss214.9108.3109.042.1123.0108.4107.8112.3167.9109.9125.8118.9188.1127.7123.1128.2-343.4122.611.9145.194.6105.1134.6158.737.8130.8167.6164.910382.9162.9251.1157.3-185.8-600.3325.6178.2-117.0-1130.6-345.6253.2
Percentage of InterestIncomeOperating649.53352.62436.4-288.21042.21305.5894.1813.0303.2972.5496.7680.8251.1562.5353.0642.6114.7549.8-14.2376.32076.5956.3566.3436.4-122.5892.5306.2460.2244.2249.2201.2385.385.5137.10.00.00.00.00.00.0
Percentage of InterestIncomeOperating sui:RealPropertyOperationsSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

sui:TotalEquity


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value1202763-15.478
Percentage of NetIncomeLoss109.1112.7107.596.2
Percentage of InterestIncomeOperating4444.61062.02404.4-658.6
Percentage of InterestIncomeOperating sui:TotalEquity0.00.00.00.0

us-gaap:AccumulatedDistributionsInExcessOfNetIncome


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value113278260-14.514594236
Percentage of NetIncomeLoss102.7111.6102.0102.790.2102.8104.2103.8
Percentage of InterestIncomeOperating4185.51050.83157.42295.7-617.61237.5864.6751.8
Percentage of InterestIncomeOperating us-gaap:AccumulatedDistributionsInExcessOfNetIncome0.00.00.00.00.00.00.00.0

us-gaap:Equity


Net
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value278963-15.478644537
Percentage of NetIncomeLoss112.7110.5107.596.2112.2110.5106.8
Percentage of InterestIncomeOperating1062.03420.62404.4-658.61351.2917.2773.5
Percentage of InterestIncomeOperating us-gaap:Equity0.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value4.5971.8623.9493.1630.2312.892.570.863
Percentage of NetIncomeLoss4.27.54.95.4-1.45.06.32.5
Percentage of InterestIncomeOperating169.170.8150.5120.09.860.652.218.0
Percentage of InterestIncomeOperating us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.0

us-gaap:Parent


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value118298663-14.283614536
Percentage of NetIncomeLoss106.9119.1106.9108.188.8107.8110.5106.3
Percentage of InterestIncomeOperating4354.61121.63307.92415.7-607.81298.1916.9769.8
Percentage of InterestIncomeOperating us-gaap:Parent0.00.00.00.00.00.00.00.0

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-7044000.0-295000.0-96000.0-6907000.0-2861000.0962000.0720000.05422000.02585000.01041000.051000.04071000.02227000.02094000.0876000.01776000.01315000.01088000.0879000.0-695000.00000000112000.000-185000.0
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.00.00.0100.00.00.0100.0
Percentage of InterestIncomeOperating-259.1-11.2-3.8-263.2-108.640.921.4113.752.621.71.077.542.239.415.730.026.123.418.7-14.90.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value110247.5868158-16.086285740349.0394620297.438241221-1.618-7.8037.8758928126.869-13.069224.9287.8460.0823.7491.0355.744-1.432-0.651.6635.377-2.223-0.373-0.892.4
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating4073.9941.9302.23094.72235.7-684.5847.61195.0821.0715.2180.6876.3386.7564.1133.5407.3245.2454.2-33.4401.6-167.0199.62194.4721.4315.8172.4-323.7639.5139.8233.92.4108.932.5193.9-46.0-22.80.00.00.00.00.00.0

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value1102458-16.086
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0
Percentage of InterestIncomeOperating4073.9941.92235.7-684.5
Percentage of InterestIncomeOperating us-gaap:MaterialReconcilingItems0.00.00.00.0

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic us-gaap:StatementBusinessSegments

sui:HomeSalesAndHomeRentalsSegment


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value-8.717-6.769-5.289-9.313-6.553-4.843-3.17-4.26-5.702-4.62-5.37-5.764-5.624-7.232-3.341-6.571-4.896-4.773-4.941-4.6157.242-1.858-5.666-6.433-6.533-7.454-4.355-6.075-6.918-3.313-3.852-4.159-3.913-4.552-3.751-4.203
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic-114.9-8.3-9.057.9-23.0-8.5-7.8-12.4-63.1-10.0-26.3-19.2-75.6-30.0-27.0-31.1306.0-25.363.3-58.68.1-6.5-46.1-93.750.0-32.9-88.4-77.4-8436.6-88.4-372.2-72.4273.3700.3-225.6-78.2
Percentage of InterestIncomeOperating-347.3-258.0-200.7-396.3-194.6-101.5-64.4-88.8-113.9-87.9-101.8-108.4-101.0-122.2-66.3-141.4-102.2-101.4-105.8-117.0177.8-46.6-145.5-161.5-161.8-210.3-123.5-181.1-198.5-96.3-121.1-140.4-125.8-159.9-141.30.0
Percentage of InterestIncomeOperating sui:HomeSalesAndHomeRentalsSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

sui:RealPropertyOperationsSegment


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value168764-6.7733561433814502535133115273.29623-2.8621282301713-6.536309.283137.07.0624.8879.9032.4813.9025.4149.58
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic214.9108.3109.042.1123.0108.5107.8112.4163.1110.0126.3119.2175.6130.0127.0131.1-206.0125.336.7158.691.9106.5146.1193.750.0132.9188.4177.48536.6188.4472.2172.4-173.3-600.3325.6178.2
Percentage of InterestIncomeOperating649.53352.62436.4-288.21042.21296.5885.4804.0294.6964.2488.5672.5234.5529.5311.4595.768.8503.1-61.3316.62016.6768.0461.3333.9-161.9849.8263.3415.1200.8205.2153.6334.279.7137.1203.90.0
Percentage of InterestIncomeOperating sui:RealPropertyOperationsSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Diluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-06-302011-03-31
Value110248058-16.0865740349.8694620297.438241221-1.618-7.8037.8758728126.869-12.993224.9287.8460.0823.7491.0355.744-1.432-0.651.6635.377-0.892.585
Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating4048.5936.13074.22235.7-684.51195.0821.0715.2197.2876.3386.7564.1133.5407.3245.2454.2-33.4401.6-167.0199.62151.3721.4315.8172.4-321.8639.5139.8233.92.4108.932.5193.9-46.0-22.80.00.00.00.0

Operating Income Loss

us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems

us-gaap:OperatingIncomeLoss

us-gaap:OperatingSegments


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value303220198221172179167197171164150175148149
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating11169.38378.67899.48449.46540.37651.04959.14133.03484.43425.93008.43338.22804.82803.8
Percentage of InterestIncomeOperating us-gaap:OperatingSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:OperatingSegments, sui:HomeSalesAndHomeRentalsSegment


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value222119201921221919191816
Percentage of OperatingIncomeLoss11.39.811.411.411.711.112.911.912.611.312.410.8
Percentage of InterestIncomeOperating894.9825.0745.0873.7581.4459.6449.8406.8380.2376.6347.1303.3
Percentage of InterestIncomeOperating us-gaap:OperatingSegments sui:HomeSalesAndHomeRentalsSegment0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, sui:MH


Operating
Period End2021-06-302021-03-312020-06-302020-03-31
Value160148134136
Percentage of OperatingIncomeLoss52.767.378.075.7
Percentage of InterestIncomeOperating5887.95642.35101.75791.0
Percentage of InterestIncomeOperating us-gaap:OperatingSegments sui:MH0.00.00.00.0

us-gaap:OperatingSegments, sui:Marinas


Operating
Period End2021-06-302021-03-31
Value6231
Percentage of OperatingIncomeLoss20.714.2
Percentage of InterestIncomeOperating2310.31193.2
Percentage of InterestIncomeOperating us-gaap:OperatingSegments sui:Marinas0.00.0

us-gaap:OperatingSegments, sui:RV


Operating
Period End2021-06-302021-03-312020-06-302020-03-31
Value80403540
Percentage of OperatingIncomeLoss26.618.420.422.4
Percentage of InterestIncomeOperating2971.11543.11332.31711.4
Percentage of InterestIncomeOperating us-gaap:OperatingSegments sui:RV0.00.00.00.0

us-gaap:OperatingSegments, sui:RealPropertyOperationsSegment


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value175200152159147175149144131155129132
Percentage of OperatingIncomeLoss88.790.288.688.688.388.987.188.187.488.787.689.2
Percentage of InterestIncomeOperating7004.57624.45795.36777.24377.83673.43034.63019.22628.22961.72457.72500.6
Percentage of InterestIncomeOperating us-gaap:OperatingSegments sui:RealPropertyOperationsSegment0.00.00.00.00.00.00.00.00.00.00.00.0

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-660000.0-1099000.0-390000.0-2524000.0-552000.0-302000.04946000.0-4408000.01021000.01898000.0-3239000.01231000.0-1828000.0-2617000.03642000.03345000.0875000.0752000.0-5848000.0000-158000.0-121000.0-42000.0-52000.051000.055000.0590000.0144000.0-121000.0-197000.0
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating-24.3-41.8-15.5-96.2-20.9-12.9146.9-92.420.839.5-64.723.4-34.6-49.265.456.517.416.2-122.10.00.00.0-5.0-4.1-1.4-1.80.00.00.00.00.00.0

us-gaap:OtherNonoperatingIncomeExpense us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-660000.0-1099000.0-390000.0-2524000.0-552000.0-302000.0389000.0-4408000.01021000.01898000.0-3239000.01231000.0-1828000.0-2617000.0
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.07.9100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating-24.3-41.8-15.5-96.2-20.9-12.911.5-92.420.839.5-64.723.4-34.6-49.2
Percentage of InterestIncomeOperating us-gaap:MaterialReconcilingItems0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherNonoperatingIncomeExpense us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:MaterialReconcilingItems, sui:HomeSalesAndHomeRentalsSegment


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1000.0001000.0-143000.0-7000.0-40000.038000.0-40000.01000.01000.0-1000.0
Percentage of OtherNonoperatingIncomeExpense-0.3-0.0-0.0-0.3-2.90.2-3.92.01.20.1-0.10.0
Percentage of InterestIncomeOperating0.00.00.00.0-4.2-0.1-0.80.8-0.80.00.0-0.0
Percentage of InterestIncomeOperating us-gaap:MaterialReconcilingItems sui:HomeSalesAndHomeRentalsSegment0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MaterialReconcilingItems, sui:RealPropertyOperationsSegment


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-391000.0-2524000.0-552000.0-303000.0532000.0-4401000.01061000.01860000.0-3199000.01230000.0-1829000.0-2616000.0
Percentage of OtherNonoperatingIncomeExpense100.3100.0100.0100.310.899.8103.998.098.899.9100.1100.0
Percentage of InterestIncomeOperating-15.6-96.2-20.9-12.915.8-92.321.638.8-63.923.4-34.7-49.2
Percentage of InterestIncomeOperating us-gaap:MaterialReconcilingItems sui:RealPropertyOperationsSegment0.00.00.00.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value120279.8188963-15.4783064453710512433102816251.50123-5.03811100391812-12.017267.61102.6335.973.2748.271-0.602-0.2752.4796.393-2.112-0.021-0.9872.585-0.478-1.649-2.847
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating4444.61062.0391.23420.62404.4-658.6911.11351.2917.2773.5213.3983.9458.0632.1185.6489.2336.6549.831.3493.7-107.8298.62455.6995.7474.9307.4-297.7754.4215.8323.875.5173.4102.9279.1-19.4-9.70.00.00.00.00.00.00.00.00.0

us-gaap:ProfitLoss us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Profit
Period End2021-06-302021-03-312020-06-302020-03-31
Value1202763-15.478
Percentage of ProfitLoss100.0100.0100.0100.0
Percentage of InterestIncomeOperating4444.61062.02404.4-658.6
Percentage of InterestIncomeOperating us-gaap:MaterialReconcilingItems0.00.00.00.0

us-gaap:ProfitLoss us-gaap:StatementBusinessSegments

sui:HomeSalesAndHomeRentalsSegment


Profit
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-9.115-7.056-5.511-9.72-6.849-5.065-3.325-4.478-5.979-4.853-5.652-6.07-5.924-7.63-3.532-6.966-5.195-5.086-5.29-4.9827.858-2.028-6.184-6.929-7.008-8.045-4.694-6.616-7.562-3.613-4.205-4.6-4.529-5.091-4.314-4.623-5.291-5.036-4.357-4.046
Percentage of ProfitLoss-92.8-7.9-8.762.8-22.3-7.9-7.4-12.1-56.0-9.4-23.4-18.1-57.3-26.3-20.8-27.3-346.1-21.9105.0-42.37.9-5.1-33.5-56.658.3-30.1-61.7-60.9-287.2-60.5-128.4-55.6752.31851.3-174.0-72.3250.523981.0441.4-156.5
Percentage of InterestIncomeOperating-363.1-268.9-209.1-413.6-203.4-106.2-67.6-93.3-119.5-92.3-107.1-114.2-106.3-128.9-70.0-149.9-108.4-108.1-113.2-126.3192.9-50.9-158.8-173.9-173.6-226.9-133.1-197.3-216.9-105.0-132.1-155.2-145.6-178.80.00.00.00.00.00.0
Percentage of InterestIncomeOperating sui:HomeSalesAndHomeRentalsSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

sui:RealPropertyOperationsSegment


Profit
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value189668-5.7583769484116562939163620326.696280.2521692412419-5.009341217109.5837.479123.9274.8166.793113.1795.0153.376.631
Percentage of ProfitLoss192.8107.9108.737.2122.3107.9107.4112.1156.0109.4123.4118.1157.3126.3120.8127.3446.1121.9-5.0142.392.1105.1133.5156.641.7130.1161.7160.9387.2160.5228.4155.6-652.3-1751.3274.0172.3-150.5-23881.0-341.4256.5
Percentage of InterestIncomeOperating754.33689.52613.5-245.01114.41457.4984.8866.8332.81076.3565.1746.3292.0618.0406.6699.8139.8601.85.4424.82262.71046.5633.7481.4-124.1981.3349.0521.1292.5278.4235.0434.4126.2169.20.00.00.00.00.00.0
Percentage of InterestIncomeOperating sui:RealPropertyOperationsSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Revenue From Contract With Customer Including Assessed Tax

us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax

us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value405330384284231237301256226216274323271257242268237234218249190174168185165152119125115111104107100103908382837674686966646667
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating14928.512566.115309.410837.48785.010118.58961.45375.74596.44516.25475.76155.65143.64851.74344.44531.24717.45045.24563.45307.14083.94427.04129.64649.04262.53831.72964.43538.43272.53314.93010.83114.53147.43489.02924.62919.70.00.00.00.00.00.00.00.00.00.0

us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ProductOrService

sui:AncillaryRevenues


Revenue
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
Value1065043121031178.48227126.568178.856.219
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax26.215.315.45.34.312.57.63.98.54.42.56.33.72.7
Percentage of InterestIncomeOperating3915.11923.71669.3469.6433.8670.8351.0176.7525.3228.0123.6287.4175.5133.9
Percentage of InterestIncomeOperating sui:AncillaryRevenues0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

sui:BrokerageCommissionsAndOtherRevenuesNet


Revenue
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
Value6.9395.965.8813.2743.9135.0022.5083.681.3470.8830.9011.0911.0080.879
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax1.71.82.11.41.62.01.11.70.40.30.30.40.40.4
Percentage of InterestIncomeOperating255.2226.5224.1124.3166.5104.951.076.725.616.716.918.420.018.9
Percentage of InterestIncomeOperating sui:BrokerageCommissionsAndOtherRevenuesNet0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

sui:IncomeFromRealProperty


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value405330276284231237226256226216200229198197198179183
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax100.0100.072.1100.0100.0100.075.0100.0100.0100.073.271.073.276.573.975.478.1
Percentage of InterestIncomeOperating14928.512566.111035.610837.48785.010118.56721.05375.74596.44516.24006.54368.53764.83709.83349.03558.63940.0
Percentage of InterestIncomeOperating sui:IncomeFromRealProperty0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

sui:Interest


Revenue
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
Value2.7192.6312.6242.6352.354.774.9194.85.2565.2775.3165.925.0434.646
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.70.80.91.11.01.92.22.21.61.92.12.22.12.0
Percentage of InterestIncomeOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating sui:Interest0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

sui:RentalHomeRevenue


Revenue
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value161415141413131313121212
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax5.76.56.55.66.46.44.24.95.04.85.35.3
Percentage of InterestIncomeOperating616.3568.0658.4302.8293.0291.1258.5252.9244.9215.5251.4265.6
Percentage of InterestIncomeOperating sui:RentalHomeRevenue0.00.00.00.00.00.00.00.00.00.00.00.0

sui:RevenueFromHomeSales


Revenue
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
Value8152473840494739464134333027
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax20.215.816.816.617.119.420.918.314.315.213.512.413.011.6
Percentage of InterestIncomeOperating3010.21984.01816.41462.21727.11044.1960.4825.4877.7781.1656.5560.8611.9586.8
Percentage of InterestIncomeOperating sui:RevenueFromHomeSales0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

sui:AncillaryRevenues, sui:HomeSalesAndHomeRentalsSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value224.3940.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax5.51.30.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating822.5167.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating sui:AncillaryRevenues sui:HomeSalesAndHomeRentalsSegment0.00.00.00.00.00.00.00.00.00.00.00.00.0

sui:AncillaryRevenues, sui:Marinas


Revenue
Period End2021-06-302021-03-31
Value8244
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax20.313.4
Percentage of InterestIncomeOperating3024.61685.8
Percentage of InterestIncomeOperating sui:AncillaryRevenues sui:Marinas0.00.0

sui:AncillaryRevenues, sui:RealPropertyOperationsSegment


Revenue
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
Value1.851.86443121031178.48227126.568178.856.219
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.50.615.45.34.312.57.63.98.54.42.56.33.72.7
Percentage of InterestIncomeOperating68.070.81669.3469.6433.8670.8351.0176.7525.3228.0123.6287.4175.5133.9
Percentage of InterestIncomeOperating sui:AncillaryRevenues sui:RealPropertyOperationsSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

sui:BrokerageCommissionsAndOtherRevenuesNet, sui:HomeSalesAndHomeRentalsSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value3.62.8950.00.00.00.00.00.00.0-0.0590.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.90.90.00.00.00.00.00.00.0-0.00.00.00.0
Percentage of InterestIncomeOperating132.4110.00.00.00.00.00.00.00.0-1.10.00.00.0
Percentage of InterestIncomeOperating sui:BrokerageCommissionsAndOtherRevenuesNet sui:HomeSalesAndHomeRentalsSegment0.00.00.00.00.00.00.00.00.00.00.00.00.0

sui:BrokerageCommissionsAndOtherRevenuesNet, sui:Marinas


Revenue
Period End2021-06-302021-03-31
Value0.0010.545
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.2
Percentage of InterestIncomeOperating0.020.7
Percentage of InterestIncomeOperating sui:BrokerageCommissionsAndOtherRevenuesNet sui:Marinas0.00.0

sui:BrokerageCommissionsAndOtherRevenuesNet, sui:RealPropertyOperationsSegment


Revenue
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
Value3.3382.525.8813.2743.9135.0022.5083.681.3470.8830.961.0911.0080.879
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.80.82.11.41.62.01.11.70.40.30.40.40.40.4
Percentage of InterestIncomeOperating122.895.8224.1124.3166.5104.951.076.725.616.718.118.420.018.9
Percentage of InterestIncomeOperating sui:BrokerageCommissionsAndOtherRevenuesNet sui:RealPropertyOperationsSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

sui:IncomeFromRealProperty, sui:HomeSalesAndHomeRentalsSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value132810.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax32.624.50.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating4871.83082.60.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating sui:IncomeFromRealProperty sui:HomeSalesAndHomeRentalsSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

sui:IncomeFromRealProperty, sui:Marinas


Revenue
Period End2021-06-302021-03-31
Value7351
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax18.115.5
Percentage of InterestIncomeOperating2703.01947.3
Percentage of InterestIncomeOperating sui:IncomeFromRealProperty sui:Marinas0.00.0

sui:IncomeFromRealProperty, sui:RealPropertyOperationsSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value199198276284231237226256226216200229198197198179183
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax49.360.072.1100.0100.0100.075.0100.0100.0100.073.271.073.276.573.975.478.1
Percentage of InterestIncomeOperating7353.77536.211035.610837.48785.010118.56721.05375.74596.44516.24006.54368.53764.83709.83349.03558.63940.0
Percentage of InterestIncomeOperating sui:IncomeFromRealProperty sui:RealPropertyOperationsSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

sui:Interest, sui:HomeSalesAndHomeRentalsSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value0.6210.5370.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.20.20.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating22.820.40.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating sui:Interest sui:HomeSalesAndHomeRentalsSegment0.00.00.00.00.00.00.00.00.00.00.00.00.0

sui:Interest, sui:Marinas


Revenue
Period End2021-06-302021-03-31
Value0.0140.008
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.0
Percentage of InterestIncomeOperating0.50.3
Percentage of InterestIncomeOperating sui:Interest sui:Marinas0.00.0

sui:Interest, sui:RealPropertyOperationsSegment


Revenue
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
Value2.0842.0862.6242.6352.354.774.9194.85.2565.2775.3165.925.0434.646
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.50.60.91.11.01.92.22.21.61.92.12.22.12.0
Percentage of InterestIncomeOperating76.679.3100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating sui:Interest sui:RealPropertyOperationsSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

sui:RentalHomeRevenue, sui:HomeSalesAndHomeRentalsSegment


Revenue
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value161415141413131313121212
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax5.76.56.55.66.46.44.24.95.04.85.35.3
Percentage of InterestIncomeOperating616.3568.0658.4302.8293.0291.1258.5252.9244.9215.5251.4265.6
Percentage of InterestIncomeOperating sui:RentalHomeRevenue sui:HomeSalesAndHomeRentalsSegment0.00.00.00.00.00.00.00.00.00.00.00.0

sui:RevenueFromHomeSales, sui:HomeSalesAndHomeRentalsSegment


Revenue
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
Value116.867473840494739464134333027
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax2.92.116.816.617.119.420.918.314.315.213.512.413.011.6
Percentage of InterestIncomeOperating438.6261.01816.41462.21727.11044.1960.4825.4877.7781.1656.5560.8611.9586.8
Percentage of InterestIncomeOperating sui:RevenueFromHomeSales sui:HomeSalesAndHomeRentalsSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

sui:RevenueFromHomeSales, sui:RealPropertyOperationsSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value69450.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax17.213.70.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating2571.61723.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating sui:RevenueFromHomeSales sui:RealPropertyOperationsSegment0.00.00.00.00.00.00.00.00.00.00.00.00.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value603442384400303310301362312287274323271257242268237234218249190174168185165152119125115111104107100103908382837674686966646667
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating22209.016800.315309.415263.511509.113204.38961.47598.46351.85986.05475.76155.65143.64851.74344.44531.24717.45045.24563.45307.14083.94427.04129.64649.04262.53831.72964.43538.43272.53314.93010.83114.53147.43489.02924.62919.70.00.00.00.00.00.00.00.00.00.0

us-gaap:Revenues us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value594433377392297304295352305278265316265251
Percentage of Revenues98.498.198.397.998.198.097.997.397.697.097.098.097.797.6
Percentage of InterestIncomeOperating21853.816473.715043.514939.411284.912937.88774.27393.56200.85809.45313.16030.05026.84734.7
Percentage of InterestIncomeOperating us-gaap:OperatingSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:OperatingSegments, sui:HomeSalesAndHomeRentalsSegment


Revenuesus-gaap:
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value646353566064615357595447
Percentage of Revenues16.915.917.618.119.917.719.718.721.018.520.118.6
Percentage of InterestIncomeOperating2587.82432.72030.32385.51781.91346.91253.41116.41148.71136.21034.0901.4
Percentage of InterestIncomeOperating us-gaap:OperatingSegments sui:HomeSalesAndHomeRentalsSegment0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, sui:MH


Revenuesus-gaap:
Period End2021-06-302021-03-312020-06-302020-03-31
Value271245217221
Percentage of Revenues45.055.571.871.3
Percentage of InterestIncomeOperating9993.49330.18268.09411.1
Percentage of InterestIncomeOperating us-gaap:OperatingSegments sui:MH0.00.00.00.0

us-gaap:OperatingSegments, sui:Marinas


Revenuesus-gaap:
Period End2021-06-302021-03-31
Value15595
Percentage of Revenues25.821.6
Percentage of InterestIncomeOperating5727.53633.1
Percentage of InterestIncomeOperating us-gaap:OperatingSegments sui:Marinas0.00.0

us-gaap:OperatingSegments, sui:RV


Revenuesus-gaap:
Period End2021-06-302021-03-31
Value16692
Percentage of Revenues27.620.9
Percentage of InterestIncomeOperating6132.93510.6
Percentage of InterestIncomeOperating us-gaap:OperatingSegments sui:RV0.00.0

us-gaap:OperatingSegments, sui:RealPropertyOperationsSegment


Revenuesus-gaap:
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value312328243247235288243225208257210203
Percentage of Revenues81.481.980.479.978.079.677.978.476.179.577.679.0
Percentage of InterestIncomeOperating12455.712506.79254.610552.36992.26046.64947.44692.94164.44893.73992.83833.3
Percentage of InterestIncomeOperating us-gaap:OperatingSegments sui:RealPropertyOperationsSegment0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Revenues us-gaap:StatementBusinessSegments

sui:HomeSalesAndHomeRentalsSegment


Revenuesus-gaap:
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value64635356606461535759544748454339404337363630302725232419232221202017171513131313
Percentage of Revenues16.915.917.618.119.917.719.718.721.018.520.118.620.217.118.316.918.617.319.920.921.916.618.218.321.218.921.317.622.321.121.119.822.820.721.819.117.818.419.919.5
Percentage of InterestIncomeOperating2587.82432.72030.32385.51781.91346.91253.41116.41148.71136.21034.0901.4877.1776.2863.3852.4847.5919.1813.3923.8906.4773.7776.5701.9628.0669.7696.1582.1670.4656.3665.5692.3665.7603.20.00.00.00.00.00.0
Percentage of InterestIncomeOperating sui:HomeSalesAndHomeRentalsSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

sui:MH


Revenuesus-gaap:
Period End2021-06-302021-03-312020-06-302020-03-31
Value277250221225
Percentage of Revenues45.956.673.172.6
Percentage of InterestIncomeOperating10192.89505.18410.19585.5
Percentage of InterestIncomeOperating sui:MH0.00.00.00.0

sui:Marinas


Revenuesus-gaap:
Period End2021-06-302021-03-31
Value15596
Percentage of Revenues25.821.8
Percentage of InterestIncomeOperating5728.13654.1
Percentage of InterestIncomeOperating sui:Marinas0.00.0

sui:RV


Revenuesus-gaap:
Period End2021-06-302021-03-312020-06-302020-03-31
Value170958185
Percentage of Revenues28.321.726.927.4
Percentage of InterestIncomeOperating6288.13641.03099.13618.9
Percentage of InterestIncomeOperating sui:RV0.00.00.00.0

sui:RealPropertyOperationsSegment


Revenuesus-gaap:
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
Value319336249254241298250233216263216210193222194194
Percentage of Revenues83.184.182.481.980.182.380.381.379.081.579.981.479.882.981.783.1
Percentage of InterestIncomeOperating12721.512830.89478.910818.97179.46251.45098.44869.64326.95017.04109.73951.43467.33754.93854.14192.8
Percentage of InterestIncomeOperating sui:RealPropertyOperationsSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value120401145411206833583488209780273977222709867106653649261496111615761785902587059045823456241904114403238442937243021432108199919361916191317541501141214081367132813221162
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary


Assetsus-gaap:
Period End2021-06-302020-12-31
Value540463
Percentage of Assets4.54.1
Percentage of Assets4.54.1
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary100.0100.0

us-gaap:Assets us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary


Assetsus-gaap:
Period End2021-03-312020-12-312020-09-302020-06-302019-12-31
Value511463409385368
Percentage of Assets4.54.14.94.64.7
Percentage of Assets4.54.14.94.64.7
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:StatementBusinessSegments

sui:HomeSalesAndHomeRentalsSegment


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value347334031114818799780754728741695657632600554538517507497491497465467450464444401387354351329314296283262242218208197182150
Percentage of Assets28.829.79.99.89.69.59.79.810.39.89.89.59.29.08.88.48.28.48.48.48.010.210.711.311.010.413.214.616.415.615.715.314.813.713.814.614.814.013.312.9
Percentage of Assets28.829.79.99.89.69.59.79.810.39.89.89.59.29.08.88.48.28.48.48.48.010.210.711.311.010.413.214.616.415.615.715.314.813.713.814.614.814.013.312.9
Percentage of Assets sui:HomeSalesAndHomeRentalsSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sui:MarinaSaleSegment


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-31
Value318027022622
Percentage of Assets26.423.623.4
Percentage of Assets26.423.623.4
Percentage of Assets sui:MarinaSaleSegment100.0100.0100.0

sui:RealPropertyOperationsSegment


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value53875348100917517754974287047666964806403605260215891559455735640567154045379540753574095374036503588344325502075179217781684163916321650151112821203121011851015
Percentage of Assets44.746.790.190.290.490.590.390.289.790.290.290.590.891.091.291.691.891.691.691.692.089.889.388.789.089.686.885.483.684.484.384.785.286.386.285.485.286.086.787.3
Percentage of Assets44.746.790.190.290.490.590.390.289.790.290.290.590.891.091.291.691.891.691.691.692.089.889.388.789.089.686.885.483.684.484.384.785.286.386.285.485.286.086.787.3
Percentage of Assets sui:RealPropertyOperationsSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value509951015314379138454346384837203542384634793367373634713405335133733478344134293645259125712786261724631997151715721542160215161477145215411348138213621468140113881295
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets42.444.547.445.546.152.949.350.349.054.251.850.657.656.455.754.454.658.958.658.162.656.861.467.764.964.168.062.473.373.280.178.377.175.987.989.897.996.8107.4105.5104.9111.4

us-gaap:Liabilities us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary


Liabilitiesus-gaap:
Period End2021-06-302020-12-31
Value154104
Percentage of Liabilities3.02.0
Percentage of Assets1.30.9
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary28.622.6

us-gaap:Liabilities us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary


Liabilitiesus-gaap:
Period End2021-03-312020-12-312020-09-302020-06-302019-12-31
Value13710410210895
Percentage of Liabilities2.72.02.72.82.5
Percentage of Assets1.20.91.21.31.2
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary26.922.625.128.126.0

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value120401145411206833583488209780273977222709867106653649261496111615761785902587059045823456241904114403238442937243021432108199919361916191317541501141214081367132813221162
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value655559925525435843473724381934993507307831063159262925712598269626912294229523342033181014551162112711418919015595513804014184391921305.7820-126.609-101.418-95.969-119.903
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets54.452.349.352.352.145.449.047.348.643.446.347.540.541.842.543.843.638.939.139.534.939.734.728.327.929.730.437.126.126.119.020.721.822.911.08.70.41.4-9.3-7.6-7.3-10.3

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-31
Value832226282150113201510137241108.1646931410452311124832597.629.3054.7534.9556.4886129384.499155.8574.7414.0074.8578.424.7065.6184.4966.162
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.30.40.40.30.71.70.30.20.22.23.90.20.11.20.59.01.10.60.33.22.810.70.40.40.20.30.33.21.72.60.31.10.40.40.30.00.70.00.00.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value119120981153893943441463462129362723157262262559
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.01.00.91.44.74.80.40.60.60.50.91.90.60.40.42.64.20.50.41.4

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueInputsLevel1, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring, sui:MarketableSecurities


Cash
Period End2021-06-302020-12-31
Value11992
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.094.2
Percentage of Assets1.00.8
Percentage of Assets us-gaap:FairValueInputsLevel1 us-gaap:EstimateOfFairValueFairValueDisclosure us-gaap:FairValueMeasurementsRecurring sui:MarketableSecurities0.00.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:CarryingReportedAmountFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring, sui:MarketableSecurities


Cash
Period End2021-06-302020-12-31
Value11992
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.094.2
Percentage of Assets1.00.8
Percentage of Assets us-gaap:CarryingReportedAmountFairValueDisclosure us-gaap:FairValueMeasurementsRecurring sui:MarketableSecurities0.00.0

us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring, sui:MarketableSecurities


Cash
Period End2021-06-302020-12-31
Value11992
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.094.2
Percentage of Assets1.00.8
Percentage of Assets us-gaap:EstimateOfFairValueFairValueDisclosure us-gaap:FairValueMeasurementsRecurring sui:MarketableSecurities0.00.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents us-gaap:StatementBusinessSegments

sui:HomeSalesAndHomeRentalsSegment


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value3338100785246434325
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents27.832.2102.067.613.511.7124.0103.541.7
Percentage of Assets0.30.30.90.90.60.60.60.60.4
Percentage of Assets sui:HomeSalesAndHomeRentalsSegment1.01.19.09.56.65.95.75.93.9

sui:MarinaSaleSegment


Cash
Period End2021-06-302021-03-312020-12-31
Value251010
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents21.08.610.8
Percentage of Assets0.20.10.1
Percentage of Assets sui:MarinaSaleSegment0.80.40.4

sui:RealPropertyOperationsSegment


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value6171-2.00837336348-8.346-8.34636
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents51.159.2-2.032.486.588.3-24.0-20.058.3
Percentage of Assets0.50.6-0.00.44.04.2-0.1-0.10.5
Percentage of Assets sui:RealPropertyOperationsSegment1.11.3-0.00.54.54.7-0.1-0.10.6

Land

us-gaap:Land

us-gaap:Land


Land
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value24122190211914411433141814141311128612791201118711311114110710791066105210271072458456451457438373309216220212194191191193182156153153140116
Percentage of Land100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets20.019.118.917.317.217.318.117.717.818.017.917.817.418.118.117.517.317.817.518.27.910.010.811.110.99.710.58.910.310.19.79.910.010.110.410.410.910.910.310.0

Furniture And Fixtures Gross

us-gaap:FurnitureAndFixturesGross

us-gaap:FurnitureAndFixturesGross


Furniture
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value529491447338312285282251215208201174162148144140137133130125107104102989689816767676560585554434241
Percentage of FurnitureAndFixturesGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.44.34.04.13.73.53.63.43.02.93.02.62.52.42.42.32.22.32.22.11.82.32.52.42.42.32.82.83.23.23.33.13.02.93.12.93.03.0

Amortization Of Intangible Assets

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfIntangibleAssets


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value1012103.9323.7843.6563.8633.9864.0053.8772.5484.2253.5873.7323.5523.7543.8143.8023.7974.3212.2942.2822.4082.471.9092.0280.0941.31.2721.2781.2921.2331.2551.084
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AmortizationOfIntangibleAssets us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CustomerRelationships


Amortization
Period End2021-06-302021-03-31
Value2.7091.611
Percentage of AmortizationOfIntangibleAssets24.912.8
Percentage of Assets0.00.0
Percentage of Assets us-gaap:CustomerRelationships0.00.0

us-gaap:FranchiseRights


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value0.4920.492.5790.2050.2040.2050.2040.2050.2050.205-0.2480.7170.0190.0190.0240.0190.1290.1290.1480.1290.1290.1290.1290.1290.1290.1290.0190.0190.0080.0310.0440.010.0070.0
Percentage of AmortizationOfIntangibleAssets4.53.925.85.25.45.65.35.15.15.3-9.717.00.50.50.70.53.43.43.93.05.65.75.45.26.86.420.21.50.62.43.40.80.60.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:FranchiseRights0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LeasesAcquiredInPlace


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value6.9779.8167.3173.7273.583.4513.6593.7813.83.6722.6083.323.3453.493.493.4783.4283.4163.4173.8242.1652.1532.2792.3411.781.8991.1930.8910.8910.891-0.3031.21.31.8-0.5430.70.71.0
Percentage of AmortizationOfIntangibleAssets64.177.873.194.894.694.494.794.994.994.7102.478.693.393.598.392.689.989.890.088.594.494.394.694.893.293.61269.168.570.069.7-23.597.3103.6166.10.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:LeasesAcquiredInPlace0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TrademarksAndTradeNames


Amortization
Period End2021-06-302021-03-31
Value0.2090.208
Percentage of AmortizationOfIntangibleAssets1.91.6
Percentage of Assets0.00.0
Percentage of Assets us-gaap:TrademarksAndTradeNames0.00.0

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-12-312021-06-302021-03-312020-12-31
Value428448438428
Percentage of Goodwill100.0100.0100.0100.0
Percentage of Assets0.03.73.83.8

us-gaap:Goodwill us-gaap:BusinessAcquisition

sui:SafeHarbor


Goodwillus-gaap:
Period End2020-12-31
Value428
Percentage of Goodwill100.0
Percentage of Assets3.8
Percentage of Assets sui:SafeHarbor0.0

us-gaap:Goodwill us-gaap:StatementBusinessSegments

sui:HomeSalesAndHomeRentalsSegment


Goodwillus-gaap:
Period End2020-12-31
Value69
Percentage of Goodwill16.3
Percentage of Assets0.6
Percentage of Assets sui:HomeSalesAndHomeRentalsSegment6.3

sui:MarinaSaleSegment


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-31
Value448438428
Percentage of Goodwill100.0100.0100.0
Percentage of Assets3.73.83.8
Percentage of Assets sui:MarinaSaleSegment14.116.216.4

sui:RealPropertyOperationsSegment


Goodwillus-gaap:
Period End2020-12-31
Value358
Percentage of Goodwill83.7
Percentage of Assets3.2
Percentage of Assets sui:RealPropertyOperationsSegment3.6

Intangible Assets Net Including Goodwill

us-gaap:IntangibleAssetsNetIncludingGoodwill

us-gaap:IntangibleAssetsNetIncludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312019-12-31
Value29530030566
Percentage of IntangibleAssetsNetIncludingGoodwill100.0100.0100.0100.0
Percentage of Assets2.52.62.70.9

Other Assets

us-gaap:OtherAssets

us-gaap:OtherAssets


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value3242632652252222192192262542202251651461381341411451441461661091882211041061131021136566686163645950454444454430
Percentage of OtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.72.32.42.72.72.72.83.13.53.13.42.52.32.32.22.32.32.42.52.81.94.15.32.52.63.03.54.73.13.13.43.23.33.43.43.43.23.13.33.43.42.7

us-gaap:OtherAssets us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary


Other
Period End2021-06-302020-12-312019-12-31
Value322423
Percentage of OtherAssets10.19.310.9
Percentage of Assets0.30.20.3
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary6.15.30.0

us-gaap:OtherAssets us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary


Other
Period End2021-03-312020-12-312020-09-302020-06-302019-12-31
Value3124242723
Percentage of OtherAssets12.19.310.912.510.9
Percentage of Assets0.30.20.30.30.3
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary6.25.36.07.26.5

us-gaap:OtherAssets us-gaap:StatementBusinessSegments

sui:HomeSalesAndHomeRentalsSegment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value453992666255524475543626165.043.8493.7443.9383.6512.83.0283.7173.6113.0735.1425.3355.2624.8674.0745.0624.824.5943.7873.8454.2334.6485.5343.73.5722.9522.535
Percentage of OtherAssets14.114.935.029.628.325.223.719.629.924.716.016.211.63.62.92.72.72.51.91.83.41.91.44.95.04.64.83.67.77.36.76.16.06.67.811.08.28.16.68.2
Percentage of Assets0.40.30.80.80.80.70.70.61.10.80.50.40.30.10.10.10.10.10.00.10.10.10.10.10.10.10.20.20.20.20.20.20.20.20.30.40.30.30.20.2
Percentage of Assets sui:HomeSalesAndHomeRentalsSegment1.31.28.38.27.97.16.96.110.27.85.54.22.80.90.70.70.80.70.60.60.80.80.71.11.21.31.31.11.41.51.51.31.41.61.92.51.81.81.61.7

sui:MarinaSaleSegment


Other
Period End2021-06-302021-03-312020-12-31
Value966947
Percentage of OtherAssets29.826.218.0
Percentage of Assets0.80.60.4
Percentage of Assets sui:MarinaSaleSegment3.02.61.8

sui:RealPropertyOperationsSegment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value1811551721591591631671811781651891381291331301371411401431631051842189910110897109606164585960554441404130
Percentage of OtherAssets56.058.965.070.471.774.876.380.470.175.384.083.888.496.497.197.397.397.598.198.296.698.198.695.195.095.495.296.492.392.793.393.994.093.492.289.091.891.993.4100.4
Percentage of Assets1.51.41.51.91.92.02.22.52.52.32.82.12.02.22.12.22.32.42.42.81.84.05.22.42.52.83.34.52.82.93.23.03.13.13.13.02.92.93.12.7
Percentage of Assets sui:RealPropertyOperationsSegment3.42.91.72.12.12.22.42.72.72.63.12.32.22.42.32.42.52.62.73.02.04.55.82.72.83.23.85.33.43.43.83.53.73.63.73.53.43.43.53.0

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312018-12-312017-12-312016-12-312014-12-312013-12-312013-03-312012-03-312011-12-31
Value2011804.770971541.43.44228231213070309118131491135512931397
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.71.60.01.90.00.046.550.252.761.774.670.891.9102.1

us-gaap:LongTermDebt dei:LegalEntity

sui:GTSC


Long
Period End2020-12-312020-06-302019-12-312019-09-30
Value167140123110
Percentage of LongTermDebt3515.010000.03584.80.0
Percentage of Assets1.51.71.61.5
Percentage of Assets sui:GTSC0.00.00.00.0

us-gaap:LongTermDebt dei:LegalEntity, us-gaap:DebtInstrument

sui:GTSC, sui:JVDebtAffiliatedEntityPortion


Long
Period End2020-12-31
Value49
Percentage of LongTermDebt1035.4
Percentage of Assets0.4
Percentage of Assets sui:GTSC sui:JVDebtAffiliatedEntityPortion0.0

sui:GTSC, sui:TotalGTSCDebt


Long
Period End2020-12-31
Value123
Percentage of LongTermDebt2586.5
Percentage of Assets1.1
Percentage of Assets sui:GTSC sui:TotalGTSCDebt0.0

us-gaap:LongTermDebt us-gaap:CreditFacility

sui:UnsecuredTermLoanFacility


Long
Period End2021-03-31
Value45
Percentage of LongTermDebt25.0
Percentage of Assets0.4
Percentage of Assets sui:UnsecuredTermLoanFacility0.0

us-gaap:RevolvingCreditFacility


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-31
Value190404028634241231371280.04344037
Percentage of LongTermDebt94.322.4846.818.24564.30.03590.60.04.10.00.00.01.2
Percentage of Assets1.60.40.40.30.85.21.61.91.90.06.70.70.6
Percentage of Assets us-gaap:RevolvingCreditFacility0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LongTermDebt us-gaap:CreditFacility, us-gaap:LongtermDebtType

us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit


Long
Period End2020-12-31
Value652
Percentage of LongTermDebt13666.0
Percentage of Assets5.8
Percentage of Assets us-gaap:RevolvingCreditFacility us-gaap:LineOfCredit0.0

us-gaap:LongTermDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType

sui:MaturesDecember12021598PercentInterestRate, us-gaap:SecuredDebt


Long
Period End2020-12-31
Value500
Percentage of LongTermDebt10480.0
Percentage of Assets4.5
Percentage of Assets sui:MaturesDecember12021598PercentInterestRate us-gaap:SecuredDebt0.0

us-gaap:LongTermDebt us-gaap:LongtermDebtType

sui:LoanPrincipalAmortization


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312014-12-312013-12-312013-03-312012-03-312011-12-31
Value0.9970231.026857734674554227128159152152
Percentage of LongTermDebt20.929.823.522.017.912.68.611.811.810.9
Percentage of Assets0.00.010.911.09.47.86.48.310.811.2
Percentage of Assets sui:LoanPrincipalAmortization0.00.00.00.00.00.00.00.00.00.0

sui:MortgageMaturities


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312014-12-312013-12-312013-03-312012-03-312011-12-31
Value2.4618382.1616152078218322461410102410501003985
Percentage of LongTermDebt51.662.866.671.172.777.868.777.577.570.5
Percentage of Assets0.00.031.035.738.348.051.254.971.272.0
Percentage of Assets sui:MortgageMaturities0.00.00.00.00.00.00.00.00.00.0

sui:PreferredEquityMandatorilyRedeemable


Long
Period End2020-12-312019-12-312018-12-31
Value0.0346630.03466337
Percentage of LongTermDebt0.71.01.2
Percentage of Assets0.00.00.6
Percentage of Assets sui:PreferredEquityMandatorilyRedeemable0.00.00.0

us-gaap:LineOfCredit


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312014-12-312013-12-312013-03-312012-03-312011-12-31
Value1.2421970.183898128411005.7941810.3925.984129
Percentage of LongTermDebt26.05.34.11.43.20.312.20.00.59.2
Percentage of Assets0.00.01.90.71.70.29.10.00.49.4
Percentage of Assets us-gaap:LineOfCredit0.00.00.00.00.00.00.00.00.00.0

us-gaap:LongTermDebt us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

sui:GTSC


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-30
Value80726761564944
Percentage of LongTermDebt40.040.01406.440.04000.01435.10.0
Percentage of Assets0.70.60.60.70.70.60.6
Percentage of Assets sui:GTSC0.00.00.00.00.00.00.0

sui:SungeniaJV


Long
Period End2021-03-312020-12-312020-06-30
Value3.23.30.7
Percentage of LongTermDebt1.869.250.0
Percentage of Assets0.00.00.0
Percentage of Assets sui:SungeniaJV0.00.00.0

us-gaap:LongTermDebt us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:LongtermDebtType

sui:SunNGRVResorts, sui:PreferredEquityMandatorilyRedeemable


Long
Period End2020-12-312019-12-312018-12-31
Value0.0352490.03524935
Percentage of LongTermDebt0.71.01.1
Percentage of Assets0.00.00.5
Percentage of Assets sui:SunNGRVResorts sui:PreferredEquityMandatorilyRedeemable0.00.00.0

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value100991027271615657585860636264656770636670737880757426481111141618202220-22.98-21.469-20.438-19.594-16.545-15.027-12.481
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.90.90.90.90.80.70.80.80.80.91.01.01.01.11.11.11.11.11.21.31.71.91.81.80.71.60.50.60.70.80.91.11.21.2-1.5-1.5-1.5-1.4-1.2-1.1-1.1

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2021-06-302021-03-312020-09-30
Value6704000.04844000.02842000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0
Percentage of Assets0.10.00.0

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2021-06-302021-03-312020-09-30
Value6733000.04931000.02863000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0100.0100.0
Percentage of Assets0.10.00.0

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2021-06-302021-03-312020-09-30
Value7102000.05251000.02993000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0100.0100.0
Percentage of Assets0.10.00.0

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2021-06-302021-03-312020-09-30
Value7093000.05281000.03300000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0100.0100.0
Percentage of Assets0.10.00.0

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2021-06-302021-03-312020-09-30
Value986132
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0100.0100.0
Percentage of Assets0.80.50.4

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value774649252526242418190.0
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.60.40.40.30.30.30.30.30.30.30.0

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value129798645
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0100.0100.0
Percentage of Assets1.10.70.80.5

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2021-06-302021-03-312020-09-30
Value513620
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0100.0100.0
Percentage of Assets0.40.30.2

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value655559925525435843473724381934993507307831063159262925712598269626912294229523342033181014551162112711418919015595513804014184391921305.7820-126.609-101.418-95.969-119.903
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets54.452.349.352.352.145.449.047.348.643.446.347.540.541.842.543.843.638.939.139.534.939.734.728.327.929.730.437.126.126.119.020.721.822.911.08.70.41.4-9.3-7.6-7.3-10.3

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value665560915627443144193786387535573565313631673222269126352663276327612358236224042106188815361238120111679409135715653974194394612121522945-100.655-72.415-65.448-132.384
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets55.353.250.253.252.946.149.748.149.444.247.248.441.542.943.644.944.740.040.240.736.241.436.730.129.830.432.037.626.726.819.921.722.924.112.110.22.13.2-7.4-5.5-4.9-11.4

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

sui:TotalEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312018-12-312017-12-312016-12-31
Value694163525891450338623953323027062429
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest104.3104.3104.7101.9102.0102.0102.0101.6102.8
Percentage of Assets57.655.552.653.947.150.748.244.341.4
Percentage of Assets sui:TotalEquity0.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedDistributionsInExcessOfNetIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312009-12-312008-12-31
Value-1614.243-1631.044-1566.636-1491.338-1496.542-1479.424-1393.141-1353.214-1343.792-1317.605-1288.486-1237.428-1223.394-1187.563-1162.001-1117.228-1089.428-1050.141-1023.415-975.511-947.988-896.896-864.122-916.961-911.628-890.374-863.545-807.59-799.805-778.766-761.112-739.197-720.95-699.955-683.734-663.579-644.22-629.23-617.953-588.338-574.417-549.625-498.37-445.147
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-24.3-26.8-27.8-33.7-33.9-39.1-35.9-38.0-37.7-42.0-40.7-38.4-45.4-45.1-43.6-40.4-39.4-44.5-43.3-40.6-45.0-47.5-56.2-74.0-75.9-76.2-91.9-88.4-139.9-137.6-191.7-176.1-164.2-151.6-321.0-434.2-2157.5-1386.7613.9812.5877.7415.20.00.0
Percentage of Assets-13.4-14.2-14.0-17.9-17.9-18.0-17.9-18.3-18.6-18.6-19.2-18.6-18.8-19.3-19.0-18.1-17.6-17.8-17.4-16.5-16.3-19.7-20.6-22.3-22.6-23.2-29.4-33.2-37.3-36.9-38.1-38.2-37.6-36.6-39.0-44.2-45.6-44.7-45.2-44.3-43.4-47.30.00.0
Percentage of Assets us-gaap:AccumulatedDistributionsInExcessOfNetIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312009-12-312008-12-31
Value8163761870875851584752115213485448514398439843963854375937583810378033463321331329802706231920792038203117541709135913291141114012031202940857714713555551543495463459
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest122.6125.1126.0132.0132.3137.6134.5136.5136.1140.2138.9136.4143.2142.6141.1137.9136.9141.9140.6137.8141.5143.3150.9167.9169.6173.9186.6187.1237.8235.0287.5271.8274.0260.6441.4561.32391.41573.2-552.4-762.2-830.7-374.20.00.0
Percentage of Assets67.866.563.270.270.063.566.865.667.262.065.666.159.461.161.561.961.256.756.656.151.259.355.350.550.552.859.770.363.463.157.158.962.862.953.657.150.650.740.641.541.142.60.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AociIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312014-12-31
Value5.1974.0333.178-2.226-4.475-8.325-1.331-2.825-1.184-3.006-4.504-0.39-2.184-0.671.1021.531-0.981-2.63-3.181-4.8760.0010.00.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.10.10.1-0.1-0.1-0.2-0.0-0.1-0.0-0.1-0.1-0.0-0.1-0.00.00.1-0.0-0.1-0.1-0.20.00.00.0
Percentage of Assets0.00.00.0-0.0-0.1-0.1-0.0-0.0-0.0-0.0-0.1-0.0-0.0-0.00.00.0-0.0-0.0-0.1-0.10.00.00.0
Percentage of Assets us-gaap:AociIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312009-12-312008-12-31
Value1.1591.1181.0760.9830.9830.9330.9320.9070.9070.8650.8640.8640.8090.7990.7970.7930.790.7370.7320.730.6860.6460.5840.5450.5380.5350.4860.480.4110.4040.3610.3610.3790.3770.3160.3150.2830.2830.2360.2350.2330.2170.2060.203
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.10.20.90.6-0.2-0.3-0.4-0.20.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Equity


Stockholders
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value6352589145434503386239533676367932523230
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest104.3104.7102.5101.9102.0102.0103.4103.2103.7102.0
Percentage of Assets55.552.654.553.947.150.749.751.045.848.2
Percentage of Assets us-gaap:Equity0.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312009-12-312008-12-31
Value100991027271615657585860636264656770636670737880757426481111141618202220222425252930-12.481-6.4690.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest1.51.61.81.61.61.61.51.61.61.81.92.02.32.42.42.42.62.72.82.93.54.15.36.16.22.35.11.32.12.64.24.44.64.99.614.880.655.3-25.8-40.1-46.69.40.00.0
Percentage of Assets0.80.90.90.90.90.80.70.80.80.80.91.01.01.01.11.11.11.11.11.21.31.71.91.81.80.71.60.50.60.70.80.91.11.21.21.51.71.81.92.22.3-1.10.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Stockholders
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312012-09-302012-06-302012-03-312011-12-312010-12-312009-12-312008-12-31
Value6655609156274419378638753565313631671305.7820-126.609-119.903-104.839-59.882
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.085.219.444.7125.890.60.00.0
Percentage of Assets55.353.250.252.946.149.749.444.247.28.70.41.4-9.3-10.30.00.0
Percentage of Assets us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value-1566.636-1393.141-1288.486-1162.001-1023.415
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-27.8-35.9-40.7-43.6-43.3
Percentage of Assets-14.0-17.9-19.2-19.0-17.4
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.0

us-gaap:StockholdersEquityTotal


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312009-12-312008-12-31
Value562738753167266323622106188815361238120111679409135715653974194394612121522945-100.655-101.418-95.969-119.903-111.308-59.882
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0140.1146.690.60.00.0
Percentage of Assets50.249.747.243.640.236.241.436.730.129.830.432.037.626.726.819.921.722.924.112.110.22.13.2-7.4-7.6-7.3-10.30.00.0
Percentage of Assets us-gaap:StockholdersEquityTotal0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1159000.01118000.01076000.0983000.0983000.0933000.0932000.0907000.0907000.0865000.0864000.0864000.0809000.0799000.0797000.0793000.0790000.0737000.0732000.0730000.0686000.0646000.0584000.0545000.0538000.0535000.0486000.0480000.0411000.0404000.0361000.0361000.0379000.0377000.0316000.0315000.0283000.0283000.0236000.0235000.0233000.0217000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital

us-gaap:AdditionalPaidInCapital

us-gaap:AdditionalPaidInCapital


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value8163761870875851584752115213485448514398439843963854375937583810378033463321331329802706231920792038203117541709135913291141114012031202940857714713555551543495
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets67.866.563.270.270.063.566.865.667.262.065.666.159.461.161.561.961.256.756.656.151.259.355.350.550.552.859.770.363.463.157.158.962.862.953.657.150.650.740.641.541.142.6

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value5197000.04033000.03178000.0-2226000.0-4475000.0-8325000.0-1331000.0-2825000.0-1184000.0-3006000.0-4504000.0-390000.0-2184000.0-670000.01102000.01531000.0-981000.0-2630000.0-3181000.0-4876000.01000.000-277000.0-277000.0-277000.0-366000.0-454000.0-535000.0-613000.0-696000.0-696000.0-735000.0-1041000.0-1273000.0-1641000.0-1842000.0-2226000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.0-0.0-0.1-0.1-0.0-0.0-0.0-0.0-0.1-0.0-0.0-0.00.00.0-0.0-0.0-0.1-0.10.00.00.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.1-0.1-0.1-0.1-0.1-0.2

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value100991027271615657585860636264656770636670737880757426481111141618202220-22.98-21.469-20.438-19.594-16.545-15.027-12.481
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.90.90.90.90.80.70.80.80.80.91.01.01.01.11.11.11.11.11.21.31.71.91.81.80.71.60.50.60.70.80.91.11.21.2-1.5-1.5-1.5-1.4-1.2-1.1-1.1

Stock Issued During Period Value New Issues

us-gaap:StockIssuedDuringPeriodValueNewIssues

us-gaap:StockIssuedDuringPeriodValueNewIssues


Stock
Period End2021-03-022020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312011-09-30
Value1100-1.622638-7.14-1.549447-4.3210.013292-3.2960.0250.0200.00150.04710.034440401.7217.636
Percentage of StockIssuedDuringPeriodValueNewIssues100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents

sui:TotalEquity


Stock
Period End2021-06-302021-03-312020-06-302020-03-31
Value537522638-7.14
Percentage of StockIssuedDuringPeriodValueNewIssues0.00.0100.0100.0
Percentage of Assets0.00.00.00.0
Percentage of Assets sui:TotalEquity0.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value537522-1.622628-7.141-1.549447-4.322-0.61253889-3.2982925437215.324331259384231395.3762883034828186-0.02-0.187-0.169262-0.16143-0.1181573.6327.634
Percentage of StockIssuedDuringPeriodValueNewIssues0.00.0100.098.4100.0100.0100.0100.00.0407.796.4100.10.0100.00.0104.4354933.3703172.0754843.00.0567.295.8316.21341.30.00.00.00.00.00.00.00.00.00.00.00.00.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-06-302020-03-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value0.040.0420.0490.0010.0370.0010.00.0540.010.0020.0040.0020.0520.0050.00.0440.0380.0620.0390.0070.0030.0490.0060.0690.0070.0430.00.00.0020.0610.0010.0320.00.0470.0010.002
Percentage of StockIssuedDuringPeriodValueNewIssues0.00.00.0-0.00.0-0.00.00.00.0-0.10.00.00.00.00.093.4110.50.00.10.00.20.20.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Equity


Stock
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value522-1.622638-7.14-1.549447-4.321
Percentage of StockIssuedDuringPeriodValueNewIssues0.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets us-gaap:Equity0.00.00.00.00.00.00.0

us-gaap:Parent


Stock
Period End2021-06-302021-03-312020-06-302020-03-312019-06-302019-03-312012-09-302012-06-302012-03-31
Value537522638-7.14447-4.321143-0.118157
Percentage of StockIssuedDuringPeriodValueNewIssues0.00.0100.0100.0100.0100.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:Parent0.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value25022084162183118781381561036110211780387082704861785035545140243232442033322729142221171514161710
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating9202.68380.53366.16190.26964.55043.12329.02902.53185.72148.81237.21950.62231.91521.9689.31185.61637.91518.91010.51301.41672.11290.9871.01364.11321.61027.7596.0906.8920.01332.0584.0984.51031.0932.6942.6507.30.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-579510000.0-285980000.0-1820800000.0-297590000.0-198790000.0-169330000.0-211210000.0-228720000.0-178050000.0-392480000.0-188640000.0-137610000.0-338970000.0-68518000.0-133960000.0-100560000.0-95463000.0-71663000.0-73613000.0-72284000.0-1423400000.0-45250000.0-9979000.0-98353000.0-92682000.0-212170000.0-302080000.0-51853000.0-58101000.0-138670000.0-82103000.0-49631000.0-78339000.0-142340000.0-223880000.0-64227000.0-35375000.0-51740000.0-48036000.0-22537000.0-74872000.0-14093000.0-13043000.0-12515000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating-21313.3-10869.6-72542.2-11341.2-7544.1-7205.5-6271.0-4795.0-3619.6-8176.7-3769.8-2618.2-6423.6-1288.9-2404.5-1698.6-1893.0-1542.5-1536.5-1536.3-30465.9-1147.0-244.9-2466.8-2380.7-5325.6-7482.9-1462.7-1647.8-4134.4-2355.2-1441.9-2461.9-4803.9-7196.3-2256.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value328931718-138.6689.556411125863226160127230-8.464-31.811-73.9662433.862-36.549966359-4.33755-71.71821210227123986114-9.025146185841.46740317.56559-5.787-0.3291.02
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating12080.93534.968480.0-5284.6362.717494.03733.61805.3669.35439.51205.62420.64374.0-159.2-571.0-1249.44827.983.1-761.81053.120682.39116.5-106.51403.4-1842.25337.62534.87651.3680.02938.21765.5412.9-283.64935.65957.52950.80.00.00.00.00.00.00.00.0

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value-0.56227-273.685-5.526359-4.31211-28.087929.3773.915-104.8672351.397
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating-20.71046.5-10430.1-209.715315.3-90.4241.2-585.11756.0177.773.6-1771.44670.830.1

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
Value66000.0-147000.0-761000.0-562000.0-112000.0-130000.0-258000.0349000.0-96000.0-217000.0-73000.0-200000.0112000.0-300000.0163000.0-100000.0-364000.0-300000.0-400000.0000
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:DeferredIncomeTaxExpenseBenefit us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value66000.0-147000.0-761000.0-562000.0-112000.0-130000.0-258000.0349000.0-96000.0-217000.0-73000.0-199000.0112000.0-347000.0
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.099.5100.0115.7

us-gaap:DeferredIncomeTaxExpenseBenefit us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:MaterialReconcilingItems, sui:RealPropertyOperationsSegment


Deferred
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-145000.0-562000.0-112000.0-130000.0-258000.0349000.0-96000.0-217000.0-73000.0-199000.0112000.0-347000.0
Percentage of DeferredIncomeTaxExpenseBenefit19.1100.0100.0100.0100.0100.0100.0100.0100.099.5100.0115.7

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value1261231178887839876767681716766716462626261494847444144442930282928262425222119201719161714
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value25022084162183118781381561036110211780387082704861785035545140243232442033322729142221171514161710
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating9202.68380.53366.16190.26964.55043.12329.02902.53185.72148.81237.21950.62231.91521.9689.31185.61637.91518.91010.51301.41672.11290.9871.01364.11321.61027.7596.0906.8920.01332.0584.0984.51031.0932.6942.6507.30.00.00.00.00.00.00.00.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value110247.5868158-16.086285740349.0394620307.438261423-1.621-5.6061089361610-13.069246.4429.360.0825.2632.5497.258-1.432-0.651.6635.377-2.223-0.373-0.892.4-0.368-1.403-2.4491.337
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating4073.9941.9302.23094.72235.7-684.5847.61204.0829.7724.2180.6884.6394.9572.4133.5440.4286.8501.1-33.4448.3-120.0259.32194.4909.7420.8275.0-323.7682.2182.7279.12.4152.980.1245.0-46.0-22.80.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementBusinessSegments

sui:HomeSalesAndHomeRentalsSegment


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-8.717-6.769-5.289-9.313-6.553-4.843-3.17-4.26-5.702-4.62-5.37-5.764-5.624-7.232-3.341-6.571-4.896-4.773-4.941-4.6157.242-1.858-5.666-6.433-6.533-7.454-4.355-6.075-6.918-3.313-3.852-4.159-4.093-4.552-3.751-4.203-4.824-4.59-3.966-3.676
Percentage of NetIncomeLoss-114.9-8.3-9.057.9-23.0-8.4-7.8-12.3-63.1-9.9-25.8-18.9-75.6-27.7-23.1-28.2306.0-22.688.1-45.18.1-5.1-34.6-58.750.0-30.8-67.6-64.9-8436.6-62.9-151.1-57.3285.8700.3-225.6-78.2217.01230.6445.6-153.2
Percentage of InterestIncomeOperating-347.3-258.0-200.7-396.3-194.6-101.5-64.4-88.8-113.9-87.9-101.8-108.4-101.0-122.2-66.3-141.4-102.2-101.4-105.8-117.0177.8-46.6-145.5-161.5-161.8-210.3-123.5-181.1-198.5-96.3-121.1-140.4-131.6-159.90.00.00.00.00.00.0
Percentage of InterestIncomeOperating sui:HomeSalesAndHomeRentalsSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

sui:RealPropertyOperationsSegment


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value168764-6.7733562433915512636133317295.49425-0.6651484382217-4.9453110158.5148.5766.401112.6613.9025.4149.582.6014.2173.0766.076
Percentage of NetIncomeLoss214.9108.3109.042.1123.0108.4107.8112.3167.9109.9125.8118.9188.1127.7123.1128.2-343.4122.611.9145.194.6105.1134.6158.737.8130.8167.6164.910382.9162.9251.1157.3-185.8-600.3325.6178.2-117.0-1130.6-345.6253.2
Percentage of InterestIncomeOperating649.53352.62436.4-288.21042.21305.5894.1813.0303.2972.5496.7680.8251.1562.5353.0642.6114.7549.8-14.2376.32076.5956.3566.3436.4-122.5892.5306.2460.2244.2249.2201.2385.385.5137.10.00.00.00.00.00.0
Percentage of InterestIncomeOperating sui:RealPropertyOperationsSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

sui:TotalEquity


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value1202763-15.478
Percentage of NetIncomeLoss109.1112.7107.596.2
Percentage of InterestIncomeOperating4444.61062.02404.4-658.6
Percentage of InterestIncomeOperating sui:TotalEquity0.00.00.00.0

us-gaap:AccumulatedDistributionsInExcessOfNetIncome


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value113278260-14.514594236
Percentage of NetIncomeLoss102.7111.6102.0102.790.2102.8104.2103.8
Percentage of InterestIncomeOperating4185.51050.83157.42295.7-617.61237.5864.6751.8
Percentage of InterestIncomeOperating us-gaap:AccumulatedDistributionsInExcessOfNetIncome0.00.00.00.00.00.00.00.0

us-gaap:Equity


Net
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value278963-15.478644537
Percentage of NetIncomeLoss112.7110.5107.596.2112.2110.5106.8
Percentage of InterestIncomeOperating1062.03420.62404.4-658.61351.2917.2773.5
Percentage of InterestIncomeOperating us-gaap:Equity0.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value4.5971.8623.9493.1630.2312.892.570.863
Percentage of NetIncomeLoss4.27.54.95.4-1.45.06.32.5
Percentage of InterestIncomeOperating169.170.8150.5120.09.860.652.218.0
Percentage of InterestIncomeOperating us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.0

us-gaap:Parent


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value118298663-14.283614536
Percentage of NetIncomeLoss106.9119.1106.9108.188.8107.8110.5106.3
Percentage of InterestIncomeOperating4354.61121.63307.92415.7-607.81298.1916.9769.8
Percentage of InterestIncomeOperating us-gaap:Parent0.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value120279.8188963-15.4783064453710512433102816251.50123-5.03811100391812-12.017267.61102.6335.973.2748.271-0.602-0.2752.4796.393-2.112-0.021-0.9872.585-0.478-1.649-2.847
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating4444.61062.0391.23420.62404.4-658.6911.11351.2917.2773.5213.3983.9458.0632.1185.6489.2336.6549.831.3493.7-107.8298.62455.6995.7474.9307.4-297.7754.4215.8323.875.5173.4102.9279.1-19.4-9.70.00.00.00.00.00.00.00.00.0

us-gaap:ProfitLoss us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Profit
Period End2021-06-302021-03-312020-06-302020-03-31
Value1202763-15.478
Percentage of ProfitLoss100.0100.0100.0100.0
Percentage of InterestIncomeOperating4444.61062.02404.4-658.6
Percentage of InterestIncomeOperating us-gaap:MaterialReconcilingItems0.00.00.00.0

us-gaap:ProfitLoss us-gaap:StatementBusinessSegments

sui:HomeSalesAndHomeRentalsSegment


Profit
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-9.115-7.056-5.511-9.72-6.849-5.065-3.325-4.478-5.979-4.853-5.652-6.07-5.924-7.63-3.532-6.966-5.195-5.086-5.29-4.9827.858-2.028-6.184-6.929-7.008-8.045-4.694-6.616-7.562-3.613-4.205-4.6-4.529-5.091-4.314-4.623-5.291-5.036-4.357-4.046
Percentage of ProfitLoss-92.8-7.9-8.762.8-22.3-7.9-7.4-12.1-56.0-9.4-23.4-18.1-57.3-26.3-20.8-27.3-346.1-21.9105.0-42.37.9-5.1-33.5-56.658.3-30.1-61.7-60.9-287.2-60.5-128.4-55.6752.31851.3-174.0-72.3250.523981.0441.4-156.5
Percentage of InterestIncomeOperating-363.1-268.9-209.1-413.6-203.4-106.2-67.6-93.3-119.5-92.3-107.1-114.2-106.3-128.9-70.0-149.9-108.4-108.1-113.2-126.3192.9-50.9-158.8-173.9-173.6-226.9-133.1-197.3-216.9-105.0-132.1-155.2-145.6-178.80.00.00.00.00.00.0
Percentage of InterestIncomeOperating sui:HomeSalesAndHomeRentalsSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

sui:RealPropertyOperationsSegment


Profit
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value189668-5.7583769484116562939163620326.696280.2521692412419-5.009341217109.5837.479123.9274.8166.793113.1795.0153.376.631
Percentage of ProfitLoss192.8107.9108.737.2122.3107.9107.4112.1156.0109.4123.4118.1157.3126.3120.8127.3446.1121.9-5.0142.392.1105.1133.5156.641.7130.1161.7160.9387.2160.5228.4155.6-652.3-1751.3274.0172.3-150.5-23881.0-341.4256.5
Percentage of InterestIncomeOperating754.33689.52613.5-245.01114.41457.4984.8866.8332.81076.3565.1746.3292.0618.0406.6699.8139.8601.85.4424.82262.71046.5633.7481.4-124.1981.3349.0521.1292.5278.4235.0434.4126.2169.20.00.00.00.00.00.0
Percentage of InterestIncomeOperating sui:RealPropertyOperationsSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-579510000.0-285980000.0-1820800000.0-297590000.0-198790000.0-169330000.0-211210000.0-228720000.0-178050000.0-392480000.0-188640000.0-137610000.0-338970000.0-68518000.0-133960000.0-100560000.0-95463000.0-71663000.0-73613000.0-72284000.0-1423400000.0-45250000.0-9979000.0-98353000.0-92682000.0-212170000.0-302080000.0-51853000.0-58101000.0-138670000.0-82103000.0-49631000.0-78339000.0-142340000.0-223880000.0-64227000.0-35375000.0-51740000.0-48036000.0-22537000.0-74872000.0-14093000.0-13043000.0-12515000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating-21313.3-10869.6-72542.2-11341.2-7544.1-7205.5-6271.0-4795.0-3619.6-8176.7-3769.8-2618.2-6423.6-1288.9-2404.5-1698.6-1893.0-1542.5-1536.5-1536.3-30465.9-1147.0-244.9-2466.8-2380.7-5325.6-7482.9-1462.7-1647.8-4134.4-2355.2-1441.9-2461.9-4803.9-7196.3-2256.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value328931718-138.6689.556411125863226160127230-8.464-31.811-73.9662433.862-36.549966359-4.33755-71.71821210227123986114-9.025146185841.46740317.56559-5.787-0.3291.02
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating12080.93534.968480.0-5284.6362.717494.03733.61805.3669.35439.51205.62420.64374.0-159.2-571.0-1249.44827.983.1-761.81053.120682.39116.5-106.51403.4-1842.25337.62534.87651.3680.02938.21765.5412.9-283.64935.65957.52950.80.00.00.00.00.00.00.00.0

Proceeds From Issuance Of Long Term Debt

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:ProceedsFromIssuanceOfLongTermDebt


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value2610.00.02304002580.0265212280.00.01001.233803.108631447478.09650619.998255135729.1171051518.8468.5496.973108282033234.976521195.3314.773
Percentage of ProceedsFromIssuanceOfLongTermDebt100.00.00.0100.0100.0100.00.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt


Repayments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value201410186713418014822200254319038521316429072608.2491047.15677367.69794.4813.6971864.3058.25270114718113.8464.263211073.7072.575
Percentage of RepaymentsOfLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments Of Dividends Common Stock

us-gaap:PaymentsOfDividendsCommonStock us-gaap:StatementClassOfStock

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:CommonStock


Payments
Period End2021-06-302021-03-31
Value3.35494
Percentage of PaymentsOfDividendsCommonStock100.0100.0

us-gaap:PaymentsOfDividendsCommonStock us-gaap:StatementClassOfStock, us-gaap:SubsequentEventType

us-gaap:CommonStock, us-gaap:SubsequentEvent


Payments
Period End2021-03-31
Value87
Percentage of PaymentsOfDividendsCommonStock91.7

Dividends

us-gaap:Dividends

us-gaap:Dividends


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value3.2858.0957.4190.082.9944.7872.010.0412.8653.536-6.4763.8850.7693.337-1.260.2073.4610.8590.0992.8682.6753.9842.480.4930.3143.4570.4714.5460.4713.5630.1360.012
Percentage of Dividends100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Debt Instrument Interest Rate Stated Percentage

us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:LongtermDebtType

us-gaap:DebtInstrumentInterestRateStatedPercentage

us-gaap:SecuredDebt


Debt
Period End2021-12-312020-12-312020-09-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value2.6622.6622.9950.029950.040260.029250.04170.04170.05660.0410.0425
Percentage of DebtInstrumentInterestRateStatedPercentage100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations us-gaap:SecuredDebt0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:Range, us-gaap:LongtermDebtType, us-gaap:VariableRate

srt:Maximum, sui:LineOfCreditManufacturedHomeFloorPlanFacility, us-gaap:PrimeRate


Debt
Period End2020-12-312020-09-302020-03-312019-12-312019-09-30
Value6.06.05.00.050.06
Percentage of DebtInstrumentInterestRateStatedPercentage225.4200.316694.5124.2205.1
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations srt:Maximum sui:LineOfCreditManufacturedHomeFloorPlanFacility us-gaap:PrimeRate0.00.00.00.00.0

Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod us-gaap:AwardDate

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

sui:AwardDateSix


Share
Period End2021-06-302021-03-31
Value05100.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod us-gaap:TitleOfIndividual, sui:VestingType, us-gaap:AwardDate, us-gaap:AwardType, us-gaap:PlanName

sui:KeyEmployees, sui:TimeBased, sui:AwardDateOne, us-gaap:RestrictedStock, sui:TwoThousandFifteenEquityPlan


Share
Period End2020-12-312020-09-302020-06-302020-03-31
Value50290.01000.0-51290.051790.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.00.00.00.0

sui:KeyEmployees, sui:TimeBased, sui:AwardDateTwo, us-gaap:RestrictedStock, sui:TwoThousandFifteenEquityPlan


Share
Period End2020-12-312020-09-302020-06-302020-03-31
Value-37917.0050290.01500.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod us-gaap:TitleOfIndividual, sui:VestingType, us-gaap:AwardType, us-gaap:PlanName

srt:Director, sui:TimeBased, us-gaap:RestrictedStock, sui:A2004NonemployeePlan


Share
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0010200.000018000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.00.00.00.00.00.00.0

srt:ExecutiveOfficer, sui:MarketCondition, us-gaap:RestrictedStock, sui:TwoThousandFifteenEquityPlan


Share
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value00069000.00066000.066000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.00.00.00.00.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod us-gaap:TitleOfIndividual, us-gaap:AwardDate

srt:Director, sui:AwardDateOne


Share
Period End2021-06-302021-03-31
Value01509.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.029.6

srt:Director, sui:AwardDateTwo


Share
Period End2021-06-302021-03-31
Value010200.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.0200.0

srt:ExecutiveOfficer, sui:AwardDateFive


Share
Period End2021-06-302021-03-31
Value03400.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.066.7

srt:ExecutiveOfficer, sui:AwardDateFour


Share
Period End2021-06-302021-03-31
Value015000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.0294.1

srt:ExecutiveOfficer, sui:AwardDateOne


Share
Period End2021-06-302021-03-31
Value054000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.01058.8

srt:ExecutiveOfficer, sui:AwardDateThree


Share
Period End2021-06-302021-03-31
Value015000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.0294.1

srt:ExecutiveOfficer, sui:AwardDateTwo


Share
Period End2021-06-302021-03-31
Value081000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.01588.2

sui:KeyEmployees, sui:AwardDateOne


Share
Period End2021-06-302021-03-31
Value028856.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.0565.8

sui:KeyEmployees, sui:AwardDateTwo


Share
Period End2021-06-302021-03-31
Value061550.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.01206.9

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value-20.55-20.9642022210.0
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.00.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-03-312011-12-312010-12-31
Value7846000.01849000.02178000.02602000.01872000.001000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.0
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value-44.017-45.342444163585447403529
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sui:AggregateValueofSharestobeIssuedinAccordancetoSalesAgreement

sui:AggregateValueofSharestobeIssuedinAccordancetoSalesAgreement


Aggregate
Period End2021-06-042020-09-302020-03-312017-12-312017-09-302017-06-302017-03-312016-06-302015-06-30
Value5004504500.02000.0250250225
Percentage of AggregateValueofSharestobeIssuedinAccordancetoSalesAgreement100.0100.0100.00.0100.00.0100.0100.0100.0

sui:AncillaryRevenue

sui:AncillaryRevenue


Ancillary
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
Value10650354312109.13531178.4827.927126.568
Percentage of AncillaryRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sui:AssetAcquisitionPaymentsToAcquireBusinessesGross sui:AssetAcquisition

sui:AssetAcquisitionPaymentsToAcquireBusinessesGross

sui:IslamoradaAndAnglerHouse


Asset
Period End2021-03-31
Value17
Percentage of AssetAcquisitionPaymentsToAcquireBusinessesGross100.0

sui:PrimeMarthasVineyard


Asset
Period End2021-03-31
Value21
Percentage of AssetAcquisitionPaymentsToAcquireBusinessesGross122.1

sui:AssetAcquisitionPaymentsToAcquireBusinessesGross us-gaap:BusinessAcquisition

sui:SafeHarborAnacapaIsle


Asset
Period End2021-03-31
Value14
Percentage of AssetAcquisitionPaymentsToAcquireBusinessesGross78.6

sui:SafeHarborHideawayBay


Asset
Period End2021-03-31
Value32
Percentage of AssetAcquisitionPaymentsToAcquireBusinessesGross180.3

sui:SafeHarborMarinas


Asset
Period End2021-03-31
Value1141
Percentage of AssetAcquisitionPaymentsToAcquireBusinessesGross6352.1

sui:SafeHarborRybovichPortfolio


Asset
Period End2021-03-31
Value258
Percentage of AssetAcquisitionPaymentsToAcquireBusinessesGross1436.0

sui:AssetsHeldForSaleAdjustmentOfNotesReceivable us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

sui:AssetsHeldForSaleAdjustmentOfNotesReceivable

sui:InstallmentNotesReceivableOnManufacturedHomesGross


Assets
Period End2021-06-302021-03-31
Value-432000.0477000.0
Percentage of AssetsHeldForSaleAdjustmentOfNotesReceivable100.0100.0

sui:AssetsHeldForSaleAdjustmentOfNotesReceivable us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FairValueByMeasurementFrequency

sui:InstallmentNotesReceivableOnManufacturedHomesNet, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-31
Value4000.0-7000.0
Percentage of AssetsHeldForSaleAdjustmentOfNotesReceivable-0.9-1.5

sui:Brokeragecommissionsandotherincomenet

sui:Brokeragecommissionsandotherincomenet


Brokeragecommissionsandotherincomenet
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value6.9395.964.1625.8813.2743.9132.9375.0022.5083.683.0731.3470.8830.9010.7161.0911.0080.8790.90.9840.7470.4060.4910.4620.7290.5370.3160.3380.0950.2870.20.0790.0740.196
Percentage of Brokeragecommissionsandotherincomenet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sui:Brokeragecommissionsandotherincomenet us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Brokeragecommissionsandotherincomenetus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value6.9395.964.1625.8813.2743.9132.9375.002
Percentage of Brokeragecommissionsandotherincomenet100.0100.0100.0100.0100.0100.0100.0100.0

sui:Brokeragecommissionsandotherincomenet us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:MaterialReconcilingItems, sui:RealPropertyOperationsSegment


Brokeragecommissionsandotherincomenetus-gaap:
Period End2020-12-312020-09-302019-12-312019-09-30
Value4.1625.8812.9375.002
Percentage of Brokeragecommissionsandotherincomenet100.0100.0100.0100.0

sui:BusinessCombinationConsideredTransferredDeferredPayment us-gaap:BusinessAcquisition

sui:BusinessCombinationConsideredTransferredDeferredPayment

sui:SafeHarborAnacapaIsle


Business
Period End2021-03-31
Value14
Percentage of BusinessCombinationConsideredTransferredDeferredPayment100.0

sui:SafeHarborHideawayBay


Business
Period End2021-03-31
Value32
Percentage of BusinessCombinationConsideredTransferredDeferredPayment229.3

sui:SafeHarborMarinas


Business
Period End2021-03-31
Value2040
Percentage of BusinessCombinationConsideredTransferredDeferredPayment14442.9

sui:SafeHarborRybovichPortfolio


Business
Period End2021-03-31
Value372
Percentage of BusinessCombinationConsideredTransferredDeferredPayment2636.1

sui:CommissionMaximumPercentageofGrossSalesPricePerShareAccordingtoSalesAgreement

sui:CommissionMaximumPercentageofGrossSalesPricePerShareAccordingtoSalesAgreement


Commission
Period End2020-12-312020-03-31
Value02.0
Percentage of CommissionMaximumPercentageofGrossSalesPricePerShareAccordingtoSalesAgreement0.0100.0

sui:DebtInstrumentConvertiblePercentOfAmountByWhichTheMarketPriceOfCommonStockExceedsThreshold us-gaap:DebtInstrument, us-gaap:LongtermDebtType

sui:DebtInstrumentConvertiblePercentOfAmountByWhichTheMarketPriceOfCommonStockExceedsThreshold

sui:ConvertibleDebtAspenPreferredOpUnitsJanuary2024, sui:AspenSeriesB3PreferredOperatingPartnershipUnits


Debt
Period End2020-12-312020-03-31
Value025.0
Percentage of DebtInstrumentConvertiblePercentOfAmountByWhichTheMarketPriceOfCommonStockExceedsThreshold0.0100.0

sui:DistributionsFromAffiliate

sui:DistributionsFromAffiliate


Distributions
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value794000.01171000.0-5436000.01204000.092000.052000.0-3863000.077000.0393000.0344000.0587000.0126000.0-8000.0-59000.0000500000.00007500000.000400000.0400000.0400000.0700000.0700000.0450000.0400000.0650000.0600000.01900000.0
Percentage of DistributionsFromAffiliate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.00.00.00.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sui:DistributionsFromAffiliate us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Distributions
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-06-302018-03-31
Value794000.01171000.0392000.01204000.092000.052000.0-6000.0513000.0393000.0344000.0-8000.0-59000.0
Percentage of DistributionsFromAffiliate100.0100.0-7.2100.0100.0100.00.2666.2100.0100.0100.0100.0

sui:DistributionsFromAffiliate us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:MaterialReconcilingItems, sui:HomeSalesAndHomeRentalsSegment


Distributions
Period End2020-12-312020-09-302019-12-312019-09-302019-06-302019-03-312018-06-302018-03-31
Value392000.01204000.0-6000.0513000.0393000.0344000.0-8000.0-59000.0
Percentage of DistributionsFromAffiliate-7.2100.00.2666.2100.0100.0100.0100.0

sui:DistributionsToStockholdersOpUnitHoldersAndPreferredOpUnitHolders

sui:DistributionsToStockholdersOpUnitHoldersAndPreferredOpUnitHolders


Distributions
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value9889818178717171686564294-173.93556-390.425754535250474341414238343029262626262120181815151514141313
Percentage of DistributionsToStockholdersOpUnitHoldersAndPreferredOpUnitHolders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sui:EquityMethodInvestmentCashContributions us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

sui:EquityMethodInvestmentCashContributions

sui:GTSC


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value6.5374.3394.4756.6434.2233.689
Percentage of EquityMethodInvestmentCashContributions100.0100.0100.0100.0100.0100.0

sui:EquityMethodInvestmentCumulativeTranslationAdjustment us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

sui:EquityMethodInvestmentCumulativeTranslationAdjustment

sui:SungeniaJV


Equity
Period End2021-06-302021-03-31
Value-341000.0-287000.0
Percentage of EquityMethodInvestmentCumulativeTranslationAdjustment100.0100.0

sui:EquityMethodInvestmentFairValueAdjustment us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

sui:EquityMethodInvestmentFairValueAdjustment

sui:GTSC


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value-115000.0104000.0-103000.0-446000.01132000.0-2191000.0
Percentage of EquityMethodInvestmentFairValueAdjustment100.0100.0100.0100.0100.0100.0

sui:EquityMethodInvestmentsInitialFairValueAdjustment us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

sui:EquityMethodInvestmentsInitialFairValueAdjustment

sui:GTSC


Equity
Period End2020-12-312020-09-302020-06-302020-03-31
Value000317000.0
Percentage of EquityMethodInvestmentsInitialFairValueAdjustment0.00.00.0100.0

sui:FinancedSalesOfManufacturedHomes us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

sui:FinancedSalesOfManufacturedHomes

sui:InstallmentNotesReceivableOnManufacturedHomesGross


Financed
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value2.7211.2121.7882.190.7360.3211716109.5479.804174.3590.1850.1810.1470.3250.3780.2370.2690.0621.4441.771.8062.7782.5021.8971.5621.492
Percentage of FinancedSalesOfManufacturedHomes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sui:IncomelossAttributabletoCommonStockholdersAllocableToNonVestedRestrictedShares

sui:IncomelossAttributabletoCommonStockholdersAllocableToNonVestedRestrictedShares


Incomeloss
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value691000.0152000.0536000.0340000.0-254000.0-437000.0-448000.0-437000.0-1000.0-396000.0-119000.0-303000.0916000.0-189000.0-9000.0-253000.0137000.0-135000.0242000.0-61000.0-1216000.0-381000.0-146000.0-39000.0314000.0-256000.0-122000.0-68000.0
Percentage of IncomelossAttributabletoCommonStockholdersAllocableToNonVestedRestrictedShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sui:InvestmentAdditionalPurchase us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

sui:InvestmentAdditionalPurchase

us-gaap:FairValueMeasurementsRecurring, sui:MarketableSecurities


Investment
Period End2020-12-312020-09-302020-06-302020-03-31
Value0.00.0110.0
Percentage of InvestmentAdditionalPurchase0.00.0100.00.0

sui:InvestmentFairValueAdjustment us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

sui:InvestmentFairValueAdjustment

sui:CollateralizedReceivables, us-gaap:FairValueMeasurementsRecurring, sui:MarketableSecurities


Investment
Period End2021-06-302021-03-31
Value0.0138
Percentage of InvestmentFairValueAdjustment0.0100.0

sui:InvestmentFairValueAdjustment us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementsRecurring, sui:MarketableSecurities


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value273.5788.7681.49224-28.647
Percentage of InvestmentFairValueAdjustment0.02.60.00.00.00.0

sui:InvestmentForeignCurrentTranslationAdjustment us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

sui:InvestmentForeignCurrentTranslationAdjustment

us-gaap:FairValueMeasurementsRecurring, sui:MarketableSecurities


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value-2.324-1.6788.8743.9928.686-11.414
Percentage of InvestmentForeignCurrentTranslationAdjustment100.0100.0100.0100.0100.0100.0

sui:Issuanceofnotesandotherreceivables

sui:Issuanceofnotesandotherreceivables


Issuanceofnotesandotherreceivables
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value4.8667.90710105.14119-12.064300.00.00.00.003-0.680.8931.4381.9770.0560.4479.222-2.0771.7421.7461.0280.171-39.6540-0.739-1.0450.1641.3233.157-0.0810.4180.347
Percentage of Issuanceofnotesandotherreceivables100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sui:LesseeOperatingLeaseGrossBaseRent dei:LegalEntity, us-gaap:RelatedPartyTransactionsByRelatedParty

sui:LesseeOperatingLeaseGrossBaseRent

sui:AmericanCenter, srt:ChiefExecutiveOfficer


Lessee
Period End2020-09-302020-06-302020-03-312019-12-31
Value0018.950
Percentage of LesseeOperatingLeaseGrossBaseRent0.00.0100.00.0

sui:LossonRemeasurementofInvestment

sui:LossonRemeasurementofInvestment


Losson
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value-115000.0104000.0-103000.0-446000.01132000.0-2191000.000
Percentage of LossonRemeasurementofInvestment100.0100.0100.0100.0100.0100.00.00.0

sui:LossonRemeasurementofInvestment us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Losson
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value-115000.0104000.0-103000.0-446000.01132000.0-2191000.000
Percentage of LossonRemeasurementofInvestment100.0100.0100.0100.0100.0100.00.00.0

sui:LossonRemeasurementofInvestment us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:MaterialReconcilingItems, sui:HomeSalesAndHomeRentalsSegment


Losson
Period End2020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value-103000.0-446000.01132000.0-2191000.000
Percentage of LossonRemeasurementofInvestment100.0100.0100.0100.00.00.0

sui:LossonRemeasurementofNotesReceivable

sui:LossonRemeasurementofNotesReceivable


Losson
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value93000.0376000.0-964000.0-445000.0246000.0-2112000.000
Percentage of LossonRemeasurementofNotesReceivable100.0100.0100.0100.0100.0100.00.00.0

sui:LossonRemeasurementofNotesReceivable us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Losson
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value93000.0376000.0-964000.0-445000.0246000.0-2112000.000
Percentage of LossonRemeasurementofNotesReceivable100.0100.0100.0100.0100.0100.00.00.0

sui:LossonRemeasurementofNotesReceivable us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:MaterialReconcilingItems, sui:RealPropertyOperationsSegment


Losson
Period End2020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value-964000.0-445000.0246000.0-2112000.000
Percentage of LossonRemeasurementofNotesReceivable100.0100.0100.0100.00.00.0

sui:MinimumPercentOfIncomeFromQualifyingSourcesToAllowForRealEstateInvestmentTrustClassification

sui:MinimumPercentOfIncomeFromQualifyingSourcesToAllowForRealEstateInvestmentTrustClassification


Minimum
Period End2021-06-302021-03-312020-03-31
Value095.095.0
Percentage of MinimumPercentOfIncomeFromQualifyingSourcesToAllowForRealEstateInvestmentTrustClassification0.0100.0100.0

sui:NetIncomeLossIncludingPortionAttributabletoNoncontrollingInterestandReturnsfromPreferredStock

sui:NetIncomeLossIncludingPortionAttributabletoNoncontrollingInterestandReturnsfromPreferredStock


Net
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value2.1463.872-7.3614536512433281625
Percentage of NetIncomeLossIncludingPortionAttributabletoNoncontrollingInterestandReturnsfromPreferredStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sui:NetIncomeLossIncludingPortionAttributabletoNoncontrollingInterestandReturnsfromPreferredStock us-gaap:StatementEquityComponents

sui:TotalEquity


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value1.220.8953.872-7.3
Percentage of NetIncomeLossIncludingPortionAttributabletoNoncontrollingInterestandReturnsfromPreferredStock0.00.0100.0100.0

us-gaap:AociIncludingPortionAttributableToNoncontrollingInterest


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value1.1640.8552.2493.85-6.994-1.6411.8221.498
Percentage of NetIncomeLossIncludingPortionAttributabletoNoncontrollingInterestandReturnsfromPreferredStock0.00.0104.899.495.8-2.74.04.1

us-gaap:Equity


Net
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value0.8952.1463.872-7.3-1.7171.9131.575
Percentage of NetIncomeLossIncludingPortionAttributabletoNoncontrollingInterestandReturnsfromPreferredStock0.0100.0100.0100.0-2.84.24.3

us-gaap:NoncontrollingInterest


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value0.0560.04-0.1030.022-0.3062.892.570.8633.9662.1792.0231.7171.2681.006
Percentage of NetIncomeLossIncludingPortionAttributabletoNoncontrollingInterestandReturnsfromPreferredStock0.00.0-4.80.64.24.75.72.37.79.06.05.97.54.0

us-gaap:Parent


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value1.220.8953.872-7.3
Percentage of NetIncomeLossIncludingPortionAttributabletoNoncontrollingInterestandReturnsfromPreferredStock0.00.0100.0100.0

sui:NetProceedsFromForwardEquityOffering

sui:NetProceedsFromForwardEquityOffering


Net
Period End2021-03-02
Value544
Percentage of NetProceedsFromForwardEquityOffering100.0

sui:Netincomeattributabletocommonshareholdersafterrestrictedstockallocation

sui:Netincomeattributabletocommonshareholdersafterrestrictedstockallocation


Netincomeattributabletocommonshareholdersafterrestrictedstockallocation
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value110248058-15.8325639339.0384520298.354231220-1.46318-7.5617.8148828126.83-12.755224.8067.778
Percentage of Netincomeattributabletocommonshareholdersafterrestrictedstockallocation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sui:NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationEscrow us-gaap:StatementClassOfStock

sui:NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationEscrow

sui:ContingentConsiderationLiability


Noncash
Period End2021-06-302021-03-31
Value238000.03201000.0
Percentage of NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationEscrow100.0100.0

sui:NumberofMHSites us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

sui:NumberofMHSites

sui:CountrysideVillage


Numberof
Period End2020-07-01
Value226.0
Percentage of NumberofMHSites100.0

sui:OperatingAndFinanceLeasePayments

sui:OperatingAndFinanceLeasePayments


Operating
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
Value1487000.0978000.0697000.0564000.0598000.0382000.0687000.0458000.0512000.0
Percentage of OperatingAndFinanceLeasePayments100.0100.0100.0100.0100.0100.0100.0100.0100.0

sui:OperatingExpensesAndCostOfSales us-gaap:ConsolidationItems

sui:OperatingExpensesAndCostOfSales

us-gaap:OperatingSegments


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value290212179170125124128155133114115141117102
Percentage of OperatingExpensesAndCostOfSales100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sui:OperatingExpensesAndCostOfSales us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, sui:HomeSalesAndHomeRentalsSegment


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value424233354042393438393631
Percentage of OperatingExpensesAndCostOfSales23.724.827.128.631.527.229.629.833.328.230.931.0

us-gaap:OperatingSegments, sui:MH


Operating
Period End2021-06-302021-03-312020-06-302020-03-31
Value111978385
Percentage of OperatingExpensesAndCostOfSales38.445.666.768.5

us-gaap:OperatingSegments, sui:Marinas


Operating
Period End2021-06-302021-03-31
Value9264
Percentage of OperatingExpensesAndCostOfSales32.030.1

us-gaap:OperatingSegments, sui:RV


Operating
Period End2021-06-302021-03-31
Value8551
Percentage of OperatingExpensesAndCostOfSales29.624.3

us-gaap:OperatingSegments, sui:RealPropertyOperationsSegment


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1361289188881139480761018170
Percentage of OperatingExpensesAndCostOfSales76.375.272.971.468.572.870.470.266.771.869.169.0

sui:OtherRevenuesSegment us-gaap:ConsolidationItems

sui:OtherRevenuesSegment

us-gaap:MaterialReconcilingItems


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2.7192.6312.512.6245.9096.263-7.8229.7727.4278.488.1356.4786.1686.276
Percentage of OtherRevenuesSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sui:OtherRevenuesSegment us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:MaterialReconcilingItems, sui:RealPropertyOperationsSegment


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2.512.6245.9096.263-7.8229.7727.4278.488.1356.4786.1686.276
Percentage of OtherRevenuesSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sui:PreferredreturntoSeriesA1preferredOPunits

sui:PreferredreturntoSeriesA1preferredOPunits


Preferredreturnto
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value-3035000.0-2864000.0-2136000.0-1645000.0-1584000.0-1570000.01418000.01599000.01718000.01323000.01151000.01152000.01103000.01080000.01099000.01112000.01196000.01174000.01213000.01257000.01263000.01273000.0587000.0591000.0622000.0631000.0657000.0661000.0664000.0672000.0689000.0690000.0646000.0573000.0585000.0586000.0579000.0
Percentage of PreferredreturntoSeriesA1preferredOPunits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sui:PreferredreturntoSeriesA1preferredOPunits us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Preferredreturnto
Period End2021-06-302021-03-312020-06-302020-03-31
Value-3035000.0-2864000.0-1584000.0-1570000.0
Percentage of PreferredreturntoSeriesA1preferredOPunits100.0100.0100.0100.0

sui:PreferredreturntoSeriesA1preferredOPunits us-gaap:StatementBusinessSegments

sui:RealPropertyOperationsSegment


Preferredreturnto
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value-2136000.0-1645000.0-1584000.0-1570000.0-10698000.01599000.01718000.01323000.01151000.01152000.01103000.01080000.01099000.01112000.01196000.01174000.01213000.01257000.01263000.01273000.0587000.0591000.0622000.01029000.0657000.0661000.0664000.0
Percentage of PreferredreturntoSeriesA1preferredOPunits100.0100.0100.0100.0-754.4100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0163.1100.0100.0100.0

sui:PrepaymentPenaltyDebt

sui:PrepaymentPenaltyDebt


Prepayment
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0.00.02.9763.256.228120.00.00.03.742-1.9140.1965.260.00.2930.4661.1270.00.00.0
Percentage of PrepaymentPenaltyDebt0.00.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.00.0100.0100.0100.00.00.00.0

sui:PrincipalReductionFromRepossessedHomes us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

sui:PrincipalReductionFromRepossessedHomes

sui:InstallmentNotesReceivableOnManufacturedHomesGross


Principal
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value-662000.0-965000.0-1291000.0-1071000.0-1081000.0-1200000.0-2521000.0-2054000.0-2332000.0-1994000.0-2654000.0-1820000.0-1541000.0-1935000.0-1756000.0-2599000.0429000.0577000.0528000.01801000.0-246000.0-517000.0-3260000.02233000.0-412000.0-482000.0-421000.0-427000.0-361000.0-389000.0-581000.0-329000.0-152000.0-194000.0-384000.0-129000.0-539000.0194000.0
Percentage of PrincipalReductionFromRepossessedHomes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sui:RelatedPartyTransactionsCurrentandFutureBaseRent sui:FutureLeasePaymentSubsequentPeriods

sui:RelatedPartyTransactionsCurrentandFutureBaseRent

sui:ThroughOctober312017


Related
Period End2020-12-31
Value19.45
Percentage of RelatedPartyTransactionsCurrentandFutureBaseRent100.0

sui:RemeasurementOfMarketableSecurities

sui:RemeasurementOfMarketableSecurities


Remeasurement
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
Value273.6618.7651.49224-28.64717123.620.267-3.6390.00.00.0
Percentage of RemeasurementOfMarketableSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

sui:RemeasurementOfMarketableSecurities us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Remeasurement
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
Value273.6618.7651.49224-28.64717123.620.267-3.6390.00.00.0
Percentage of RemeasurementOfMarketableSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

sui:RemeasurementOfMarketableSecurities us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:MaterialReconcilingItems, sui:RealPropertyOperationsSegment


Remeasurement
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value8.7651.49224-28.64717123.620.267-3.6390.00.00.0
Percentage of RemeasurementOfMarketableSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

sui:RemeasurementofNotesReceivableEquityMethodInvestment us-gaap:StatementEquityComponents

sui:RemeasurementofNotesReceivableEquityMethodInvestment

sui:TotalEquity


Remeasurementof
Period End2021-06-302021-03-31
Value-821000.0597000.0
Percentage of RemeasurementofNotesReceivableEquityMethodInvestment100.0100.0

us-gaap:AccumulatedDistributionsInExcessOfNetIncome


Remeasurementof
Period End2021-06-302021-03-312020-03-31
Value-836000.0758000.01953000.0
Percentage of RemeasurementofNotesReceivableEquityMethodInvestment101.8127.00.0

us-gaap:AdditionalPaidInCapital


Remeasurementof
Period End2021-06-302021-03-31
Value15000.0-20000.0
Percentage of RemeasurementofNotesReceivableEquityMethodInvestment-1.8-3.4

us-gaap:Equity


Remeasurementof
Period End2021-03-312020-03-31
Value597000.01953000.0
Percentage of RemeasurementofNotesReceivableEquityMethodInvestment100.00.0

us-gaap:NoncontrollingInterest


Remeasurementof
Period End2021-03-31
Value-141000.0
Percentage of RemeasurementofNotesReceivableEquityMethodInvestment-23.6

us-gaap:Parent


Remeasurementof
Period End2021-06-302021-03-312020-03-31
Value-821000.0597000.01953000.0
Percentage of RemeasurementofNotesReceivableEquityMethodInvestment100.0100.00.0

sui:RentalHomeRevenue

sui:RentalHomeRevenue


Rental
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value161614151414141313131313121212121212111111111111109.8299.7339.4028.7178.4457.9777.6567.0756.7126.5116.2915.8835.655.4275.33
Percentage of RentalHomeRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sui:RepaymentofNotesandOtherReceivables

sui:RepaymentofNotesandOtherReceivables


Repaymentof
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value1.6331.2079.460.9940.8650.8541.2930.9421.2771.031.4321.4020.7990.6790.8510.8210.6260.317120.3060.2980.2480.5510.5080.3850.320.3260.644.8420.2720.3180.2870.4380.183
Percentage of RepaymentofNotesandOtherReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sui:RequiredMinimumPercentOfTaxableIncomeDistributedToStockHolders

sui:RequiredMinimumPercentOfTaxableIncomeDistributedToStockHolders


Required
Period End2021-06-302021-03-312020-03-31
Value090.090.0
Percentage of RequiredMinimumPercentOfTaxableIncomeDistributedToStockHolders0.0100.0100.0

sui:RevenueFromHomeSales

sui:RevenueFromHomeSales


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value815248473840454947394346413436333027283126242518181615131410141413121310119.6137.7568.1158.1468.2356.9867.3249.598
Percentage of RevenueFromHomeSales100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sui:RightofUseAssetObtainedinExchangeforNewOperatingLeaseLiability

sui:RightofUseAssetObtainedinExchangeforNewOperatingLeaseLiability


Rightof
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value285924-0.515-0.56225
Percentage of RightofUseAssetObtainedinExchangeforNewOperatingLeaseLiability100.0100.0100.0100.0100.0100.0

sui:SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsPercentExpectedToVest

sui:SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsPercentExpectedToVest


Sharebased
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value62.165.5074.84465.50.75675.10.7510.751
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsPercentExpectedToVest100.0100.00.0100.0100.0100.0100.0100.0100.0

sui:StockBasedCompensationAmortizationAndForfeitures

sui:StockBasedCompensationAmortizationAndForfeitures


Stock
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312011-09-30
Value-5.251-7.376-5.021-4.382-4.498-3.793-3.604-4.374-3.5792.9764.1442.7730.631
Percentage of StockBasedCompensationAmortizationAndForfeitures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sui:StockBasedCompensationAmortizationAndForfeitures us-gaap:StatementEquityComponents

sui:TotalEquity


Stock
Period End2021-06-302021-03-312020-06-302020-03-31
Value-7.173-7.18-7.376-5.021
Percentage of StockBasedCompensationAmortizationAndForfeitures0.00.0100.0100.0

us-gaap:AccumulatedDistributionsInExcessOfNetIncome


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value-0.074-0.062-0.063-0.092-0.093-0.082-0.084-0.074-0.066-0.091-0.090.0750.0740.0740.0650.0650.0640.0580.0530.0540.050.0460.0380.0370.0260.0260.0230.0230.0220.0220.0220.022
Percentage of StockBasedCompensationAmortizationAndForfeitures0.00.01.21.21.91.91.92.01.82.12.52.51.82.70.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.03.5

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value-7.099-7.118-5.188-7.284-4.928-4.3-4.414-3.71926-3.538-4.283-3.4892.7282.9014.072.6992.2122.3292.5562.2041.8211.8441.8111.4290.9850.9690.580.5380.370.3390.3170.3090.2980.609
Percentage of StockBasedCompensationAmortizationAndForfeitures0.00.098.898.898.198.198.198.00.098.297.997.50.097.598.297.30.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.096.5

us-gaap:Equity


Stock
Period End2021-03-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value-7.18-5.251-7.376-5.021-4.498-3.793
Percentage of StockBasedCompensationAmortizationAndForfeitures0.0100.0100.0100.0100.0100.0

us-gaap:Parent


Stock
Period End2021-06-302021-03-312020-06-302020-03-312012-09-302012-06-302012-03-31
Value-7.173-7.18-7.376-5.0210.3620.3390.331
Percentage of StockBasedCompensationAmortizationAndForfeitures0.00.0100.0100.00.00.00.0

sui:StockIssuedDuringPeriodValueNewIssuesPreferredOPUnits us-gaap:StatementClassOfStock

sui:StockIssuedDuringPeriodValueNewIssuesPreferredOPUnits

sui:CommonStockAndOPUnits


Stock
Period End2020-09-30
Value0.0
Percentage of StockIssuedDuringPeriodValueNewIssuesPreferredOPUnits0.0

sui:SeriesEPreferredOPUnitsDomain


Stock
Period End2020-09-302020-06-302020-03-31
Value0.00.09.0
Percentage of StockIssuedDuringPeriodValueNewIssuesPreferredOPUnits0.00.00.0

sui:SeriesFPreferredOPUnits


Stock
Period End2020-09-30
Value0.0
Percentage of StockIssuedDuringPeriodValueNewIssuesPreferredOPUnits0.0

sui:TemporaryEquityDividends

sui:TemporaryEquityDividends


Temporary
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value529000.0492000.0457000.0627000.0558000.0272000.0168000.0170000.0171000.0
Percentage of TemporaryEquityDividends100.0100.0100.0100.0100.0100.0100.0100.0100.0

sui:TemporaryEquityDividends us-gaap:StatementEquityComponents

sui:TemporaryEquity


Temporary
Period End2021-06-302021-03-312020-06-302020-03-312019-06-302019-03-31
Value1957000.01804000.0492000.0457000.0558000.0528000.0
Percentage of TemporaryEquityDividends0.00.0100.0100.0100.0194.1

sui:TemporaryEquityDividendsForTermOnePercentage us-gaap:StatementClassOfStock

sui:TemporaryEquityDividendsForTermOnePercentage

sui:SeriesEPreferredOPUnitsDomain


Temporary
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value5.255.255.255.250.05250.0525
Percentage of TemporaryEquityDividendsForTermOnePercentage100.0100.0100.0100.0100.0100.0

sui:SeriesGPreferredOPUnits


Temporary
Period End2020-09-30
Value3.2
Percentage of TemporaryEquityDividendsForTermOnePercentage61.0

sui:SeriesHPreferredOPUnits


Temporary
Period End2020-10-31
Value3.0
Percentage of TemporaryEquityDividendsForTermOnePercentage0.0

sui:SeriesJPreferredOpUnits


Temporary
Period End2021-04-30
Value2.85
Percentage of TemporaryEquityDividendsForTermOnePercentage0.0

sui:TemporaryEquityDividendsForTermOnePercentage us-gaap:StatementClassOfStock, us-gaap:SubsequentEventType

sui:SeriesJPreferredOpUnits, us-gaap:SubsequentEvent


Temporary
Period End2021-04-26
Value2.85
Percentage of TemporaryEquityDividendsForTermOnePercentage0.0

sui:TemporaryEquityDividendsForTermTwoPercentage us-gaap:StatementClassOfStock

sui:TemporaryEquityDividendsForTermTwoPercentage

sui:SeriesEPreferredOPUnitsDomain


Temporary
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value5.55.55.55.50.0550.055
Percentage of TemporaryEquityDividendsForTermTwoPercentage100.0100.0100.0100.0100.0100.0

sui:TransientRVRentalRevenueRecognizedPercentage us-gaap:StatementBusinessSegments

sui:TransientRVRentalRevenueRecognizedPercentage

sui:RealPropertyOperationsSegment


Transient
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value20.720.744.915.618.80.1610.4110.2320.2020.1640.420.2030.2580.1580.3690.2030.2730.1860.4440.1810.1690.1460.1310.1310.2250.130.410.180.280.150.30.150.4
Percentage of TransientRVRentalRevenueRecognizedPercentage100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sui:VariableInterestEntityEquityInterestsIssued

sui:VariableInterestEntityEquityInterestsIssued


Variable
Period End2020-09-302020-06-302020-03-312019-08-312019-09-302019-06-302019-03-31
Value-0.067-0.067-0.0852.4-0.093-0.117-0.256
Percentage of VariableInterestEntityEquityInterestsIssued100.0100.0100.0100.0100.0100.0100.0

sui:VariableInterestEntityEquityInterestsIssued us-gaap:StatementEquityComponents

us-gaap:AccumulatedDistributionsInExcessOfNetIncome


Variable
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value-0.053-0.052-0.067-0.067-0.085-0.093-0.308-0.065
Percentage of VariableInterestEntityEquityInterestsIssued0.00.0100.0100.0100.0100.0263.225.4

us-gaap:Parent


Variable
Period End2021-06-302021-03-312020-06-302020-03-312019-06-302019-03-31
Value-0.053-0.052-0.067-0.085-0.117-0.256
Percentage of VariableInterestEntityEquityInterestsIssued0.00.0100.0100.0100.0100.0

sui:VariableInterestEntityEquityInterestsIssuedFloatingRate dei:LegalEntity, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

sui:VariableInterestEntityEquityInterestsIssuedFloatingRate

sui:SunNGRVResorts, sui:NGSunLLC


Variable
Period End2021-06-302021-03-31
Value05.0
Percentage of VariableInterestEntityEquityInterestsIssuedFloatingRate0.0100.0

sui:WeightedAverageCommonSharesOutstandingAdjustmentCommonShareFromForwardSale

sui:WeightedAverageCommonSharesOutstandingAdjustmentCommonShareFromForwardSale


Weighted
Period End2021-03-312020-09-30
Value229000.06000.0
Percentage of WeightedAverageCommonSharesOutstandingAdjustmentCommonShareFromForwardSale100.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalMarkToMarket

us-gaap:AdjustmentsToAdditionalPaidInCapitalMarkToMarket


Adjustments
Period End2020-12-312020-09-302020-06-302020-03-31
Value000300000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalMarkToMarket0.00.00.0100.0

us-gaap:AllowanceForLoanAndLeaseLossesAdjustmentsNet us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

us-gaap:AllowanceForLoanAndLeaseLossesAdjustmentsNet

sui:CollateralizedReceivablesNetAndInstallmentNotesReceivablesOnManufacturedHomes


Allowance
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value-645000.000-45000.0-600000.0-291000.0224000.0-69000.0-15000.0-237000.0-254000.0-278000.0-229000.0-239000.0-45000.0-16000.0-42000.0-148000.0
Percentage of AllowanceForLoanAndLeaseLossesAdjustmentsNet100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessAcquisitionProFormaEarningsPerShareBasic us-gaap:BusinessAcquisition

us-gaap:BusinessAcquisitionProFormaEarningsPerShareBasic

sui:Acquisitions2020


Business
Period End2021-06-302020-12-312020-09-302020-06-302020-03-31
Value0.990.160.90.63-0.16
Percentage of BusinessAcquisitionProFormaEarningsPerShareBasic100.0100.0100.0100.0100.0

us-gaap:BusinessAcquisitionProFormaEarningsPerShareDiluted us-gaap:BusinessAcquisition

us-gaap:BusinessAcquisitionProFormaEarningsPerShareDiluted

sui:Acquisitions2020


Business
Period End2021-06-302020-09-302020-06-302020-03-31
Value0.990.890.63-0.16
Percentage of BusinessAcquisitionProFormaEarningsPerShareDiluted100.0100.0100.0100.0

us-gaap:BusinessAcquisitionsProFormaNetIncomeLoss

us-gaap:BusinessAcquisitionsProFormaNetIncomeLoss


Business
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-10.9242.1860.32-0.106-1.1316.3083.5561.317-4.6387.5293.82718318.24330546.98927319.971100.341.5895.746-5.3821.7812.0042.602
Percentage of BusinessAcquisitionsProFormaNetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessAcquisitionsProFormaNetIncomeLoss us-gaap:BusinessAcquisition

sui:Acquisitions2020


Business
Period End2021-06-302020-12-312020-09-302020-06-302020-03-31
Value111188559-14.776
Percentage of BusinessAcquisitionsProFormaNetIncomeLoss0.0-168.43926.018521.213939.6

us-gaap:BusinessAcquisitionsProFormaRevenue

us-gaap:BusinessAcquisitionsProFormaRevenue


Business
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value405.7141.2490.09215149.1633.7648.504267.1162502631751862491529616615913985828371797676
Percentage of BusinessAcquisitionsProFormaRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessAcquisitionsProFormaRevenue us-gaap:BusinessAcquisition

sui:Acquisitions2020


Business
Period End2021-06-302020-12-312020-09-302020-06-302020-03-31
Value605745422305310
Percentage of BusinessAcquisitionsProFormaRevenue0.01852.77387.624459.9337729.3

us-gaap:BusinessCombinationConsiderationTransferred1

us-gaap:BusinessCombinationConsiderationTransferred1


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302015-09-30
Value4711301932027124433722232511372972.0512.02.073
Percentage of BusinessCombinationConsiderationTransferred1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable

us-gaap:BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312017-12-312017-09-30
Value-215.6882391.1926199.03130.00.0510.026
Percentage of BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable100.0100.0100.0100.0100.0100.0100.00.00.0100.00.0100.0

us-gaap:BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable us-gaap:BusinessAcquisition

sui:CapeCod


Business
Period End2021-03-312020-12-312020-09-302020-06-302020-03-31
Value9.00.00.00.09.0
Percentage of BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable3.80.00.00.0100.0

sui:ElCapitanOceanMesa


Business
Period End2021-03-312020-12-31
Value271.19
Percentage of BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable11.4100.0

sui:ForestSprings


Business
Period End2021-03-312020-12-312020-09-30
Value190.00.0
Percentage of BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable8.00.00.0

us-gaap:BusinessCombinationIntegrationRelatedCosts

us-gaap:BusinessCombinationIntegrationRelatedCosts


Business
Period End2021-06-302021-03-31
Value-0.2011.232
Percentage of BusinessCombinationIntegrationRelatedCosts100.0100.0

us-gaap:BusinessCombinationIntegrationRelatedCosts us-gaap:BusinessAcquisition

sui:MarathonMarina


Business
Period End2021-06-30
Value1.0
Percentage of BusinessCombinationIntegrationRelatedCosts-497.5

us-gaap:BusinessCombinationSeparatelyRecognizedTransactionsExpensesAndLossesRecognized us-gaap:ConsolidationItems

us-gaap:BusinessCombinationSeparatelyRecognizedTransactionsExpensesAndLossesRecognized

us-gaap:MaterialReconcilingItems


Business
Period End2021-06-302021-03-31
Value201000.0-1232000.0
Percentage of BusinessCombinationSeparatelyRecognizedTransactionsExpensesAndLossesRecognized100.0100.0

us-gaap:CommonStockDividendsPerShareDeclared us-gaap:StatementClassOfStock

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:CommonStock


Common
Period End2021-06-302021-03-312019-09-302018-12-312017-12-312016-09-302015-12-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value0.040.790.750.710.670.650.650.650.650.650.650.630.630.630.630.6300.63
Percentage of CommonStockDividendsPerShareDeclared100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:ContractWithCustomerAssetReclassifiedToReceivable

us-gaap:ContractWithCustomerAssetReclassifiedToReceivable


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value24230.11.6-8.4270.82.5-0.418-3.71.6-10.428
Percentage of ContractWithCustomerAssetReclassifiedToReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConversionOfStockAmountConverted1

us-gaap:ConversionOfStockAmountConverted1


Conversion
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value0.2971.150.2290.2160.1310.4469.8990.8840.2470.28-0.8140.3690.7780.3420.3162.1660.1150.9593.91.0430.8530.137-1.5293.2322.8860.902-0.1710.1711.1510.556
Percentage of ConversionOfStockAmountConverted1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConversionOfStockSharesConverted1 us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:ConversionOfStockSharesConverted1

sui:ConvertibleDebtAspenPreferredOpUnitsJanuary2024, sui:AspenSeriesB3PreferredOperatingPartnershipUnits


Conversion
Period End2020-12-312020-03-31
Value00.397
Percentage of ConversionOfStockSharesConverted10.0100.0

us-gaap:CostOfOtherPropertyOperatingExpense

us-gaap:CostOfOtherPropertyOperatingExpense


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value12910388906564637965575471585150595347475737313338342924282523212422191718171615161313121313
Percentage of CostOfOtherPropertyOperatingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CurrentStateAndLocalTaxExpenseBenefit

us-gaap:CurrentStateAndLocalTaxExpenseBenefit


Current
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-30
Value1200000.0200000.01039000.0100000.0100000.0500000.013000.0400000.0300000.0200000.089000.0-200000.0-200000.0-200000.0575000.0-100000.07000.0178000.0-162000.0300000.0100000.0100000.0-100000.0100000.0100000.0-50000.0-100000.0-69000.0-69000.0-90000.0-37000.0-59000.0-84000.0
Percentage of CurrentStateAndLocalTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentBasisSpreadOnVariableRate1 us-gaap:BusinessAcquisition, us-gaap:CreditFacility, us-gaap:VariableRate

us-gaap:DebtInstrumentBasisSpreadOnVariableRate1

sui:SafeHarbor, us-gaap:RevolvingCreditFacility, us-gaap:BaseRate


Debt
Period End2021-03-31
Value1.0
Percentage of DebtInstrumentBasisSpreadOnVariableRate1100.0

sui:SafeHarbor, us-gaap:RevolvingCreditFacility, us-gaap:LondonInterbankOfferedRateLIBOR


Debt
Period End2021-03-31
Value2.0
Percentage of DebtInstrumentBasisSpreadOnVariableRate1200.0

us-gaap:DebtInstrumentBasisSpreadOnVariableRate1 us-gaap:Range, us-gaap:BusinessAcquisition, us-gaap:CreditFacility, us-gaap:VariableRate

srt:Maximum, sui:SafeHarbor, us-gaap:RevolvingCreditFacility, us-gaap:BaseRate


Debt
Period End2020-12-22
Value1.25
Percentage of DebtInstrumentBasisSpreadOnVariableRate10.0

srt:Maximum, sui:SafeHarbor, us-gaap:RevolvingCreditFacility, us-gaap:LondonInterbankOfferedRateLIBOR


Debt
Period End2020-12-22
Value2.25
Percentage of DebtInstrumentBasisSpreadOnVariableRate10.0

srt:Minimum, sui:SafeHarbor, us-gaap:RevolvingCreditFacility, us-gaap:BaseRate


Debt
Period End2020-12-22
Value0.375
Percentage of DebtInstrumentBasisSpreadOnVariableRate10.0

srt:Minimum, sui:SafeHarbor, us-gaap:RevolvingCreditFacility, us-gaap:LondonInterbankOfferedRateLIBOR


Debt
Period End2020-12-22
Value1.375
Percentage of DebtInstrumentBasisSpreadOnVariableRate10.0

us-gaap:DebtInstrumentInterestRateDuringPeriod us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentInterestRateDuringPeriod

sui:ConvertibleDebtAspenPreferredOpUnitsJanuary2024, sui:AspenSeriesB3PreferredOperatingPartnershipUnits


Debt
Period End2020-12-312020-03-31
Value03.8
Percentage of DebtInstrumentInterestRateDuringPeriod0.0100.0

us-gaap:DebtInstrumentInterestRateDuringPeriod us-gaap:LongtermDebtType

sui:AspenSeriesB3PreferredOperatingPartnershipUnits


Debt
Period End2020-12-312020-03-31
Value06.5
Percentage of DebtInstrumentInterestRateDuringPeriod0.0171.1

us-gaap:DepreciationAndAmortization us-gaap:ConsolidationItems

us-gaap:DepreciationAndAmortization

us-gaap:MaterialReconcilingItems


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1261231178887839876767681716766
Percentage of DepreciationAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepreciationAndAmortization us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:MaterialReconcilingItems, sui:HomeSalesAndHomeRentalsSegment


Depreciation
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value232221202019191818171615
Percentage of DepreciationAndAmortization20.024.924.225.120.226.125.123.922.324.625.024.0

us-gaap:MaterialReconcilingItems, sui:RealPropertyOperationsSegment


Depreciation
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value936666627856575862545050
Percentage of DepreciationAndAmortization80.075.175.874.979.873.974.976.177.775.475.076.0

us-gaap:DirectCostsOfLeasedAndRentedPropertyOrEquipment

us-gaap:DirectCostsOfLeasedAndRentedPropertyOrEquipment


Direct
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value6.0585.9494.6855.4946.1086.0085.0914.7886.5226.1395.2685.175.1796.7754.9445.1026.6576.355.4115.8766.8417.0315.4795.6056.5746.2325.2135.2516.1835.5044.4854.2925.0515.1184.1483.8244.5164.2533.7543.6734.0334.1643.594
Percentage of DirectCostsOfLeasedAndRentedPropertyOrEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DistributionsOnMandatorilyRedeemableSecurities

us-gaap:DistributionsOnMandatorilyRedeemableSecurities


Distributions
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value1041000.01036000.01047000.01047000.01042000.01041000.01566000.0857000.01181000.01094000.001152000.0780000.0619000.0753000.0790000.0787000.0784000.0789000.0789000.0787000.0787000.0602000.0978000.0787000.0855000.0808000.0808000.0806000.0803000.0808000.0809000.0812000.0809000.0827000.0822000.0836000.0841000.0840000.0834000.0829000.0828000.0826000.0826000.0
Percentage of DistributionsOnMandatorilyRedeemableSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCash

us-gaap:DividendsCash


Dividends
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-31
Value80807671716864606057575429
Percentage of DividendsCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCash us-gaap:StatementEquityComponents

sui:TotalEquity


Dividends
Period End2021-06-302021-03-312020-06-302020-03-31
Value101978177
Percentage of DividendsCash0.00.0100.6100.6

us-gaap:AccumulatedDistributionsInExcessOfNetIncome


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value969277777368686561575755555149494644-273.409194-39.047-38.859
Percentage of DividendsCash0.00.096.396.396.296.396.395.495.695.395.295.195.194.8167.20.00.00.00.00.00.00.0

us-gaap:Equity


Dividends
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value97818177717168
Percentage of DividendsCash0.0100.7100.6100.6100.9100.8100.4

us-gaap:NoncontrollingInterest


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value3.1433.262.9882.9712.9182.6252.6423.145-20.1562.8742.882.8882.82.8192.8462.7922.7642.8322.8542.858-19.18613-2.936-2.364
Percentage of DividendsCash0.00.03.73.73.83.73.74.60.04.44.74.80.04.94.95.29.30.00.00.00.00.00.00.0

us-gaap:Parent


Dividends
Period End2021-06-302021-03-312020-06-302020-03-312019-06-302019-03-31
Value999680767168
Percentage of DividendsCash0.00.0100.0100.0100.099.6

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents


Effect
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value248000.019000.0237000.0144000.0190000.0-382000.0120000.0-152000.0285000.0158000.0-429000.0158000.0-244000.0-8000.045000.0142000.0121000.0-10000.034000.0-107000.0000
Percentage of EffectOfExchangeRateOnCashAndCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:EquityMethodInvestmentDividendsOrDistributions us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:EquityMethodInvestmentDividendsOrDistributions

sui:GTSC


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value6.9082.372-25.8914-1.495-2.035
Percentage of EquityMethodInvestmentDividendsOrDistributions100.0100.0100.0100.0100.0100.0

us-gaap:FairValueOfAssetsAcquired us-gaap:BusinessAcquisition

us-gaap:FairValueOfAssetsAcquired

sui:SafeHarborMarinasElevenProperties


Fair
Period End2020-09-29
Value260
Percentage of FairValueOfAssetsAcquired100.0

sui:SafeHarborMarinasFourProperties


Fair
Period End2020-09-29
Value112
Percentage of FairValueOfAssetsAcquired43.3

us-gaap:FinanceLeaseInterestExpense

us-gaap:FinanceLeaseInterestExpense


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value26000.026000.027000.026000.026000.026000.026000.026000.026000.026000.0
Percentage of FinanceLeaseInterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FinanceLeasePrincipalPayments


Finance
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-74000.0137000.08000.07000.08000.097000.08000.07000.08000.097000.08000.07000.08000.0
Percentage of FinanceLeasePrincipalPayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseRightOfUseAssetAmortization

us-gaap:FinanceLeaseRightOfUseAssetAmortization


Finance
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value6000.087000.0-18000.0-18000.0-18000.0-38000.018000.018000.0-18000.0
Percentage of FinanceLeaseRightOfUseAssetAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax


Foreign
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-0.2640.025104.66410-17.4794.465-3.0461.1161.965
Percentage of ForeignCurrencyTransactionGainLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Foreign
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value-0.2640.0254.66410-17.479-3.0461.1161.965
Percentage of ForeignCurrencyTransactionGainLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:MaterialReconcilingItems, sui:HomeSalesAndHomeRentalsSegment


Foreign
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value0.0060.008-0.017-0.0010.0020.001
Percentage of ForeignCurrencyTransactionGainLossBeforeTax0.10.10.10.00.20.1

us-gaap:MaterialReconcilingItems, sui:RealPropertyOperationsSegment


Foreign
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value4.65810-17.462-3.0451.1141.964
Percentage of ForeignCurrencyTransactionGainLossBeforeTax99.999.999.9100.099.899.9

us-gaap:GainLossOnSaleOfProperties

us-gaap:GainLossOnSaleOfProperties


Gain
Period End2020-12-312020-09-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value0.05.5950.00.00.00.09818-0.0138.7693.138130.8850.9830.1060.00.00.6350.0120.00.0220.0650.00.00.00.0
Percentage of GainLossOnSaleOfProperties0.0100.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.00.0100.0100.00.00.00.00.0

us-gaap:GainLossOnSaleOfProperties us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Gain
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.05.5950.0920.0520.560.0770.4790.3880.7310.126
Percentage of GainLossOnSaleOfProperties0.0100.00.00.00.00.00.00.00.00.0

us-gaap:GainLossOnSaleOfProperties us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:MaterialReconcilingItems, sui:RealPropertyOperationsSegment


Gain
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.05.5950.00.00.00.00.00.00.00.0
Percentage of GainLossOnSaleOfProperties0.0100.00.00.00.00.00.00.00.00.0

us-gaap:GainLossOnSaleOfProperties us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

sui:CountrysideVillage


Gain
Period End2020-07-01
Value5.6
Percentage of GainLossOnSaleOfProperties0.0

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromEquityMethodInvestments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302011-12-312011-09-302011-06-302010-12-312010-09-302010-06-30
Value0.7941.1710.3921.2040.0920.0520.560.0773930.7310.126-8.0-1.650.450.850.0-0.069-0.758
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:IncomeLossFromEquityMethodInvestments us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

sui:GTSC


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1.4161.1811.2211.2630.70.761.1920.4786040.50.4410.126-8.0-0.1
Percentage of IncomeLossFromEquityMethodInvestments178.3100.9311.5104.9760.91461.5212.9620.8153.70.060.3100.0100.00.0

sui:OrigenFinancialServices


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.0970.0290.0140.0540.0420.0380.0130.082670.10.20.00.00.0
Percentage of IncomeLossFromEquityMethodInvestments12.22.53.64.545.773.12.3106.517.00.027.40.0-0.00.0

sui:RezPlot


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value-0.469-0.487-0.7370.005-0.654-0.5-0.54-0.356-260.0-0.20.00.0
Percentage of IncomeLossFromEquityMethodInvestments-59.1-41.6-188.00.4-710.9-961.5-96.4-462.3-66.20.00.0-0.0

sui:SVLift


Income
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302018-09-30
Value-0.325-0.286-0.169-0.258-0.131-0.1310.00.0
Percentage of IncomeLossFromEquityMethodInvestments-40.9-24.4-14.0-280.4-251.9-170.10.00.0

sui:SungeniaJV


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value0.0750.7340.140.0510.262-0.115-0.105-0.127-18.0-0.10.00.0
Percentage of IncomeLossFromEquityMethodInvestments9.462.735.74.2284.8-221.2-18.8-164.9-4.60.00.0-0.0

us-gaap:InterestCostsCapitalized

us-gaap:InterestCostsCapitalized


Interest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-03-312015-12-312015-09-302014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value1238000.01154000.02608000.02303000.02258000.0-5665100.02390000.01926000.01357000.0-1621000.01011000.0224000.01981000.0-386000.0715000.01266000.001217000.00144000.0095000.080000.0118000.0171000.0254000.0192000.0232000.000
Percentage of InterestCostsCapitalized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.00.00.0

us-gaap:InterestExpenseOther

us-gaap:InterestExpenseOther


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value1041000.01036000.01047000.01047000.01042000.01041000.01207000.01216000.01181000.01094000.01143000.01142000.0790000.0619000.0753000.0790000.0787000.0784000.0789000.0789000.0787000.0787000.0790000.0790000.0787000.0852000.0793000.0808000.0806000.0803000.0808000.0809000.0812000.0809000.0822000.0825000.0833000.0
Percentage of InterestExpenseOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseOther us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


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
Value1041000.01036000.01047000.01047000.01042000.01041000.01207000.01216000.01181000.01094000.01143000.01142000.0790000.0619000.0
Percentage of InterestExpenseOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseOther us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:MaterialReconcilingItems, sui:RealPropertyOperationsSegment


Interest
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1047000.01047000.01042000.01041000.01207000.01216000.01181000.01094000.01143000.01142000.0790000.0619000.0
Percentage of InterestExpenseOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LeaseCost

us-gaap:LeaseCost


Lease
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value4226000.03540000.02552000.01412000.01405000.01351000.01344000.01270000.01453000.01185000.0-2967000.01077000.01096000.0
Percentage of LeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LeaseIncome

us-gaap:LeaseIncome


Lease
Period End2021-06-302021-03-312020-06-302020-03-31
Value5396000.03657000.0312000.0311000.0
Percentage of LeaseIncome100.0100.0100.0100.0

us-gaap:LineOfCreditFacilityIncreaseDecreaseForPeriodNet us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:LineOfCreditFacilityIncreaseDecreaseForPeriodNet

sui:GTSC


Line
Period End2021-05-31
Value230
Percentage of LineOfCreditFacilityIncreaseDecreaseForPeriodNet100.0

us-gaap:LoansAndLeasesReceivableRelatedPartiesProceeds us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

us-gaap:LoansAndLeasesReceivableRelatedPartiesProceeds

sui:InstallmentNotesReceivableOnManufacturedHomesGross


Loans
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-30
Value3328000.02849000.02525000.02394000.02058000.02000000.02458000.02149000.02440000.01653000.02711000.02098000.01912000.02024000.0
Percentage of LoansAndLeasesReceivableRelatedPartiesProceeds100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LossFromCatastrophes

us-gaap:LossFromCatastrophes


Loss
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
Value0.3552.4140.8310.014-0.5660.6060.4350.3410.1790.782-1.8950.1730.0532.2130.2287.7560.2810.0871.1720.0
Percentage of LossFromCatastrophes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:LossFromCatastrophes us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Loss
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
Value0.3552.4140.8310.014-0.5660.6060.4350.3410.1790.7822.0790.1730.053-2.213
Percentage of LossFromCatastrophes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0-109.7100.0100.0-100.0

us-gaap:LossFromCatastrophes us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:MaterialReconcilingItems, sui:RealPropertyOperationsSegment


Loss
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.8310.014-0.5660.6060.4350.3410.1710.7822.0660.173-0.022-2.357
Percentage of LossFromCatastrophes100.0100.0100.0100.0100.0100.095.5100.0-109.0100.0-41.5-106.5

us-gaap:MinorityInterestDecreaseFromRedemptions

us-gaap:MinorityInterestDecreaseFromRedemptions


Minority
Period End2020-09-302020-06-302019-09-302018-09-302018-06-302017-09-30
Value-26.071-8.965-2.4040.107210.0
Percentage of MinorityInterestDecreaseFromRedemptions100.0100.0100.0100.0100.00.0

us-gaap:MinorityInterestDecreaseFromRedemptions us-gaap:StatementEquityComponents

sui:TemporaryEquity


Minority
Period End2021-06-302020-06-30
Value24-8.965
Percentage of MinorityInterestDecreaseFromRedemptions0.0100.0

sui:TotalEquity


Minority
Period End2021-06-302020-06-30
Value248.965
Percentage of MinorityInterestDecreaseFromRedemptions0.0-100.0

us-gaap:Equity


Minority
Period End2020-09-302020-06-30
Value-26.071-8.965
Percentage of MinorityInterestDecreaseFromRedemptions100.0100.0

us-gaap:NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable

us-gaap:NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable


Noncontrolling
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-0.096-6.907-2.8610.962-18.8165.4222.5851.0410.0514.0712.2272.0940.8761.7761.3151.088-0.310.879-0.6950.2766.9222.1250.7430.264-1.3411.8510.4580.7840.303-0.0280.0330.41
Percentage of NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Noncontrolling
Period End2021-06-302021-03-312020-06-302020-03-31
Value-7.044-0.295-2.8610.962
Percentage of NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable0.00.0100.0100.0

us-gaap:NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable us-gaap:StatementBusinessSegments

sui:HomeSalesAndHomeRentalsSegment


Noncontrolling
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value0.3980.2870.2220.4071.486-0.222-0.155-0.218-0.277-0.233-0.282-0.306-0.3-0.398-0.191-0.395-0.299-0.313-0.349-0.3670.616-0.17-0.518-0.496-0.475-0.591-0.339-0.541-0.644-0.3-0.302-0.486
Percentage of NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable-414.6-4.2-7.842.3-7.9-4.1-6.0-20.9-543.1-5.7-12.7-14.6-34.2-22.4-14.5-36.396.5-35.650.2-133.08.9-8.0-69.7-187.935.4-31.9-74.0-69.0-212.51071.4-915.2-118.5

sui:RealPropertyOperationsSegment


Noncontrolling
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-0.494-7.194-3.0830.555-20.3025.6442.741.2590.3284.3042.5092.41.1762.1741.5061.483-0.0111.192-0.3460.6436.3062.2951.2610.76-0.8662.4420.7971.3250.9470.2720.3350.896
Percentage of NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable514.6104.2107.857.7107.9104.1106.0120.9643.1105.7112.7114.6134.2122.4114.5136.33.5135.649.8233.091.1108.0169.7287.964.6131.9174.0169.0312.5-971.41015.2218.5

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeaseCost


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2304000.02148000.01330000.0973000.0977000.0974000.0876000.0794000.0982000.0822000.0
Percentage of OperatingLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeasePayments

us-gaap:OperatingLeasePayments


Operating
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-310000.02712000.0689000.0557000.0590000.0695000.0374000.0680000.0450000.0784000.0504000.01503000.0549000.0
Percentage of OperatingLeasePayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1.220.8952.1463.872-7.3-1.7171.9131.5751.89-1.594-1.8612.6481.7450.5845.226-5.2270.0010.00.00.00.00.00.00.00.00.0970.0960.0890.0850.0920.00.0440.3430.2560.4040.2220.0190.4030.607-0.261-0.325
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.00.00.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherCostAndExpenseOperating

us-gaap:OtherCostAndExpenseOperating


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value784527208.2267.4829.14418127.1018.638158.2415.2665.3529.9937.0584.6686.1778.5395.2013.5083.8886.9364.1492.5462.335.1973.139
Percentage of OtherCostAndExpenseOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherCostOfOperatingRevenue

us-gaap:OtherCostOfOperatingRevenue


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value584136323436
Percentage of OtherCostOfOperatingRevenue100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsOfFinancingCosts

us-gaap:PaymentsOfFinancingCosts


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value9.6370.70110-0.0090.0033.3280.1882.6932.8751.00.4851.043-0.0030.605-1.9392.1031.6831.8030.5982.4857.311150.2552.8692.6731.2095.1852.0930.2710.9293.2430.0310.9671.7520.7220.6310.140.5380.2151.3570.491.4490.2250.0
Percentage of PaymentsOfFinancingCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:PaymentsToAcquireAndDevelopRealEstate

us-gaap:PaymentsToAcquireAndDevelopRealEstate


Payments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value148151133135132
Percentage of PaymentsToAcquireAndDevelopRealEstate100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireBusinessesGross

us-gaap:PaymentsToAcquireBusinessesGross


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-30
Value447130183176521562682227311375128
Percentage of PaymentsToAcquireBusinessesGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireBusinessesGross us-gaap:AssetAcquisition

sui:SafeHarborMearsAnnapolis


Payments
Period End2021-03-31
Value30
Percentage of PaymentsToAcquireBusinessesGross23.5

sui:SafeHarborRockland


Payments
Period End2021-03-31
Value15
Percentage of PaymentsToAcquireBusinessesGross11.6

sui:SafeHarborWickfordCove


Payments
Period End2021-03-31
Value3.389
Percentage of PaymentsToAcquireBusinessesGross2.6

us-gaap:PaymentsToAcquireBusinessesGross us-gaap:BusinessAcquisition

sui:AssociationIslandKOA


Payments
Period End2021-03-31
Value14
Percentage of PaymentsToAcquireBusinessesGross11.3

sui:Beachwood


Payments
Period End2021-06-302021-03-31
Value0.06.599
Percentage of PaymentsToAcquireBusinessesGross0.05.0

sui:BlueWater


Payments
Period End2021-06-302021-03-31
Value0.08.849
Percentage of PaymentsToAcquireBusinessesGross0.06.8

sui:CapeCod


Payments
Period End2021-03-312020-12-312020-09-302020-06-302020-03-31
Value4.2050.00.00.04.205
Percentage of PaymentsToAcquireBusinessesGross3.20.00.00.027.6

sui:CherrystoneFamilyCamping


Payments
Period End2021-06-302021-03-31
Value0.057
Percentage of PaymentsToAcquireBusinessesGross0.044.2

sui:CrownVilla


Payments
Period End2021-03-312020-12-312020-09-30
Value160.00.0
Percentage of PaymentsToAcquireBusinessesGross12.70.00.0

sui:ElCapitanOceanMesa


Payments
Period End2021-06-302021-03-312020-12-31
Value14320.0
Percentage of PaymentsToAcquireBusinessesGross3.324.50.0

sui:FlamingoLake


Payments
Period End2021-03-312020-12-31
Value330.0
Percentage of PaymentsToAcquireBusinessesGross25.90.0

sui:ForestSprings


Payments
Period End2021-03-312020-12-312020-09-30
Value360.00.0
Percentage of PaymentsToAcquireBusinessesGross27.70.00.0

sui:GigHarbor


Payments
Period End2021-03-31
Value15
Percentage of PaymentsToAcquireBusinessesGross11.6

sui:HighlandGreenEstatesTroyVilla


Payments
Period End2021-03-312020-12-31
Value640.0
Percentage of PaymentsToAcquireBusinessesGross49.40.0

sui:JellystoneAtBartonLake


Payments
Period End2021-03-31
Value23
Percentage of PaymentsToAcquireBusinessesGross18.0

sui:JellystoneLoneStar


Payments
Period End2021-03-312020-12-31
Value200.0
Percentage of PaymentsToAcquireBusinessesGross15.50.0

sui:JellystoneNaturalBridge


Payments
Period End2021-03-312020-12-312020-09-302020-06-302020-03-31
Value110.00.00.011
Percentage of PaymentsToAcquireBusinessesGross8.40.00.00.072.4

sui:KittatinnyPortfolio


Payments
Period End2021-03-31
Value16
Percentage of PaymentsToAcquireBusinessesGross12.4

sui:LakeviewMobileEstates


Payments
Period End2021-03-31
Value23
Percentage of PaymentsToAcquireBusinessesGross18.1

sui:MaineMHPortfolio


Payments
Period End2021-03-31
Value72
Percentage of PaymentsToAcquireBusinessesGross55.4

sui:MouseMountain


Payments
Period End2021-03-31
Value15
Percentage of PaymentsToAcquireBusinessesGross11.8

sui:PleasantBeachCampground


Payments
Period End2021-06-302021-03-31
Value0.01.589
Percentage of PaymentsToAcquireBusinessesGross0.01.2

sui:RVCommunity


Payments
Period End2020-07-23
Value34
Percentage of PaymentsToAcquireBusinessesGross0.0

sui:ShenandoahAcres


Payments
Period End2021-03-31
Value16
Percentage of PaymentsToAcquireBusinessesGross12.8

sui:TranquilityMHC


Payments
Period End2021-06-302021-03-31
Value0.01.249
Percentage of PaymentsToAcquireBusinessesGross0.01.0

sui:Woodsmoke


Payments
Period End2021-03-312020-12-31
Value250.0
Percentage of PaymentsToAcquireBusinessesGross19.50.0

us-gaap:PaymentsToAcquireBusinessesGross us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Payments
Period End2021-07-02
Value67
Percentage of PaymentsToAcquireBusinessesGross0.0

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired


Payments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value4511411775424
Percentage of PaymentsToAcquireBusinessesNetOfCashAcquired100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireInterestInSubsidiariesAndAffiliates

us-gaap:PaymentsToAcquireInterestInSubsidiariesAndAffiliates


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6.694.51139.647166.971712191164108.460.783
Percentage of PaymentsToAcquireInterestInSubsidiariesAndAffiliates100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireLimitedPartnershipInterests us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:PaymentsToAcquireLimitedPartnershipInterests

sui:SunMenifee


Payments
Period End2020-10-31
Value100000.0
Percentage of PaymentsToAcquireLimitedPartnershipInterests100.0

us-gaap:ProceedsFromDivestitureOfInterestInSubsidiariesAndAffiliates

us-gaap:ProceedsFromDivestitureOfInterestInSubsidiariesAndAffiliates


Proceeds
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value5.491.1926.4210.7951.275
Percentage of ProceedsFromDivestitureOfInterestInSubsidiariesAndAffiliates100.0100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromIssuanceOfCommonStock


Proceeds
Period End2021-06-302021-03-022020-05-312020-06-302019-05-312018-09-302017-05-312017-03-312016-09-302016-06-302016-03-302016-03-312015-11-302015-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value539537633452452499408212833438538523323334827186-0.02-0.187-0.167262-0.159143-0.1181573.6337.63617299.2316.891
Percentage of ProceedsFromIssuanceOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfCommonStock us-gaap:StatementScenario

srt:ScenarioForecast


Proceeds
Period End2021-10-05
Value1230
Percentage of ProceedsFromIssuanceOfCommonStock0.0

us-gaap:ProceedsFromIssuanceOfDebt us-gaap:LongtermDebtType

us-gaap:ProceedsFromIssuanceOfDebt

sui:SeniorUnsecuredNotes


Proceeds
Period End2021-06-28
Value592
Percentage of ProceedsFromIssuanceOfDebt100.0

us-gaap:ProceedsFromIssuanceOrSaleOfEquity

us-gaap:ProceedsFromIssuanceOrSaleOfEquity


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value5375221230-1.622628-7.14-1.089-1.549447-4.321-0.61253889-3.29630-1.609438201.42633033384232403.24339.5934827186
Percentage of ProceedsFromIssuanceOrSaleOfEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromLinesOfCredit

us-gaap:ProceedsFromLinesOfCredit


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value13554423634.69153116311993369161428355145739302853.242336235106753544426336534.863141171651481557039149103774625644889113333
Percentage of ProceedsFromLinesOfCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value24171812111218141611-34.82516135.3121.9833.1340.562.8980.954-0.9741.8822.8471.9991.9851.5211.343-0.628-0.7574.4390.2580.00.00.00.00.00.00.0840.0880.00.00.00.0
Percentage of ProceedsFromSaleOfPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.00.0100.0100.00.00.00.00.0

us-gaap:ProceedsFromStockOptionsExercised us-gaap:AwardType

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:EmployeeStockOption


Proceeds
Period End2021-06-302021-03-31
Value0100000.0
Percentage of ProceedsFromStockOptionsExercised0.0100.0

us-gaap:RealEstateTaxExpense

us-gaap:RealEstateTaxExpense


Real
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2322201717171515151514141413121313131212109.5858.6838.528.7968.7156.0896.0046.0796.0095.1385.6025.7885.7564.4664.9334.9364.8724.834.5044.0984.1154.1063.8134.183
Percentage of RealEstateTaxExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReceivableWithImputedInterestEffectiveYieldInterestRate us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

us-gaap:ReceivableWithImputedInterestEffectiveYieldInterestRate

sui:InstallmentNotesReceivableOnManufacturedHomesNet


Receivable
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value-0.17.8-0.17.821-0.0010.080000.080000.080000.082-0.00970.01-0.0040.0870-0.00100.0870-0.001-0.0150.10300.00100.0880.0010.0030.0010.081
Percentage of ReceivableWithImputedInterestEffectiveYieldInterestRate100.0100.0100.0100.0100.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.0100.0100.0100.0100.00.0100.00.0100.00.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0

sui:NotesduefromRealEstateDevelopers


Receivable
Period End2021-06-302021-03-312020-12-312020-09-30
Value06.30.45.739
Percentage of ReceivableWithImputedInterestEffectiveYieldInterestRate-0.080.8-400.073.4

us-gaap:RepaymentsOfLinesOfCredit

us-gaap:RepaymentsOfLinesOfCredit


Repayments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value20357663341523763121427112371160227682344201433.676514157633755411168207151013520943313283421179769927148393264433026
Percentage of RepaymentsOfLinesOfCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfSecuredDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:RepaymentsOfSecuredDebt

sui:MaturesDecember12021598PercentInterestRate, us-gaap:SecuredDebt


Repayments
Period End2021-03-312020-09-302020-06-30
Value520.052
Percentage of RepaymentsOfSecuredDebt100.00.0100.0

sui:MaturesJuly120205.86PercentInterestRateMemberDomain, us-gaap:SecuredDebt


Repayments
Period End2021-03-312020-09-302020-06-302020-03-31
Value190.00.02219
Percentage of RepaymentsOfSecuredDebt37.80.00.00.0

sui:MaturesMarch120215.837PercentInterestRateMemberDomainDomain, us-gaap:SecuredDebt


Repayments
Period End2021-03-312020-09-302020-06-302020-03-31
Value990.00.00799
Percentage of RepaymentsOfSecuredDebt189.00.00.00.0

us-gaap:SellingExpense

us-gaap:SellingExpense


Selling
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value4.6263.6522.8643.9923.7523.9883.6263.3244.4034.0433.9863.293.0663.292.993.1111.0553.5532.8582.2782.0791.911.7971.69
Percentage of SellingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SellingExpense us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Selling
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4.6263.6522.8643.9923.7523.9883.6263.3244.4034.0433.9863.29
Percentage of SellingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SellingExpense us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:MaterialReconcilingItems, sui:HomeSalesAndHomeRentalsSegment


Selling
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4.6263.6522.8643.9923.7523.9883.6263.3244.4034.0433.9863.29
Percentage of SellingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ServicingAssetAtFairValueOtherChangesInFairValue sui:ChangesInFairValueLevel3, us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:ServicingAssetAtFairValueOtherChangesInFairValue

sui:NetEarningsLoss, sui:InstallmentNotesReceivableOnManufacturedHomesNet, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Servicing
Period End2021-06-302021-03-31
Value0.0930.375
Percentage of ServicingAssetAtFairValueOtherChangesInFairValue100.0100.0

sui:NetEarningsLoss, sui:OtherContingentLiabilitiesContingentConsideration, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Servicing
Period End2021-06-302021-03-31
Value0.0720.071
Percentage of ServicingAssetAtFairValueOtherChangesInFairValue77.418.9

sui:OtherAdjustments, sui:InstallmentNotesReceivableOnManufacturedHomesNet, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Servicing
Period End2021-06-302021-03-31
Value-0.4270.47
Percentage of ServicingAssetAtFairValueOtherChangesInFairValue-459.1125.3

sui:OtherAdjustments, sui:NotesReceivableFromRealEstateDevelopers, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Servicing
Period End2021-06-302021-03-31
Value-0.348-0.883
Percentage of ServicingAssetAtFairValueOtherChangesInFairValue-374.2-235.5

sui:OtherAdjustments, sui:OtherContingentLiabilitiesContingentConsideration, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Servicing
Period End2021-06-302021-03-31
Value-0.365-0.958
Percentage of ServicingAssetAtFairValueOtherChangesInFairValue-392.5-255.5

sui:PurchasesAndIssuances, sui:InstallmentNotesReceivableOnManufacturedHomesNet, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Servicing
Period End2021-06-302021-03-31
Value2.7211.212
Percentage of ServicingAssetAtFairValueOtherChangesInFairValue2925.8323.2

sui:PurchasesAndIssuances, sui:NotesReceivableFromRealEstateDevelopers, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Servicing
Period End2021-06-302021-03-31
Value4.3486.793
Percentage of ServicingAssetAtFairValueOtherChangesInFairValue4675.31811.5

sui:PurchasesAndIssuances, sui:OtherContingentLiabilitiesContingentConsideration, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Servicing
Period End2021-06-302021-03-31
Value0.2383.201
Percentage of ServicingAssetAtFairValueOtherChangesInFairValue255.9853.6

sui:SalesAndSettlements, sui:InstallmentNotesReceivableOnManufacturedHomesNet, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Servicing
Period End2021-06-302021-03-31
Value-3.99-3.814
Percentage of ServicingAssetAtFairValueOtherChangesInFairValue-4290.3-1017.1

sui:SalesAndSettlements, sui:NotesReceivableFromRealEstateDevelopers, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Servicing
Period End2021-06-302021-03-31
Value-0.331-0.262
Percentage of ServicingAssetAtFairValueOtherChangesInFairValue-355.9-69.9

sui:TransferToLevel3, sui:InstallmentNotesReceivableOnManufacturedHomesNet, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Servicing
Period End2021-06-302021-03-31
Value0.085
Percentage of ServicingAssetAtFairValueOtherChangesInFairValue0.022897.6

sui:TransferToLevel3, sui:NotesReceivableFromRealEstateDevelopers, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Servicing
Period End2021-06-302021-03-31
Value0.052
Percentage of ServicingAssetAtFairValueOtherChangesInFairValue0.014036.8

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:TitleOfIndividual, sui:VestingType, us-gaap:AwardDate, us-gaap:AwardType, us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

srt:ExecutiveOfficer, sui:TimeBased, sui:AwardDateThree, us-gaap:RestrictedStock, sui:TwoThousandFifteenEquityPlan


Share
Period End2020-09-30
Value0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.0

sui:KeyEmployees, sui:TimeBased, sui:AwardDateOne, us-gaap:RestrictedStock, sui:TwoThousandFifteenEquityPlan


Share
Period End2020-09-302020-06-302020-03-31
Value6.01-25.23162.42
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.00.00.0

sui:KeyEmployees, sui:TimeBased, sui:AwardDateTwo, us-gaap:RestrictedStock, sui:TwoThousandFifteenEquityPlan


Share
Period End2020-12-312020-09-302020-06-302020-03-31
Value-22.03019.22143.2
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:TitleOfIndividual, sui:VestingType, us-gaap:AwardType, us-gaap:PlanName

srt:Director, sui:TimeBased, us-gaap:RestrictedStock, sui:A2004NonemployeePlan


Share
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value000147.97000113.68
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.00.00.00.00.00.00.00.0

srt:ExecutiveOfficer, sui:MarketCondition, us-gaap:RestrictedStock, sui:TwoThousandFifteenEquityPlan


Share
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value000125.47000115.39
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.00.00.00.00.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:TitleOfIndividual, us-gaap:AwardDate

srt:Director, sui:AwardDateOne


Share
Period End2021-06-302021-03-31
Value0147.19
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.00.0

srt:ExecutiveOfficer, sui:AwardDateFive


Share
Period End2021-06-302021-03-31
Value0147.19
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.00.0

srt:ExecutiveOfficer, sui:AwardDateFour


Share
Period End2021-06-302021-03-31
Value-12.099.49
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.00.0

srt:ExecutiveOfficer, sui:AwardDateOne


Share
Period End2021-06-302021-03-31
Value0151.89
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.00.0

srt:ExecutiveOfficer, sui:AwardDateSix


Share
Period End2021-06-302021-03-31
Value096.41
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.00.0

srt:ExecutiveOfficer, sui:AwardDateThree


Share
Period End2021-06-302021-03-31
Value0151.89
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.00.0

srt:ExecutiveOfficer, sui:AwardDateTwo


Share
Period End2021-06-302021-03-31
Value-5.1799.49
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.00.0

sui:KeyEmployees, sui:AwardDateOne


Share
Period End2021-06-302021-03-31
Value0151.89
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.00.0

sui:KeyEmployees, sui:AwardDateTwo


Share
Period End2021-06-302021-03-31
Value0143.28
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:TitleOfIndividual, us-gaap:AwardDate, us-gaap:PlanName

srt:Director, sui:AwardDateTwo, sui:A2004NonemployeePlan


Share
Period End2021-06-302021-03-31
Value0148.44
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.00.0

us-gaap:ShortTermLeaseCost us-gaap:PropertyPlantAndEquipmentByType

us-gaap:ShortTermLeaseCost

sui:BelowMarketLeases


Short
Period End2021-06-302021-03-31
Value77000.061000.0
Percentage of ShortTermLeaseCost100.0100.0

us-gaap:StateAndLocalIncomeTaxExpenseBenefitContinuingOperations

us-gaap:StateAndLocalIncomeTaxExpenseBenefitContinuingOperations


State
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value1245000.0-229000.0-107000.0119000.0450000.0420000.0272000.0214000.0313000.0-38000.0-7000.0178000.0116000.0283000.056000.0228000.0-71000.077000.077000.049000.012000.069000.069000.069000.048000.090000.037000.0100000.0084000.053000.0100000.0100000.000100000.0
Percentage of StateAndLocalIncomeTaxExpenseBenefitContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.00.0100.0

us-gaap:StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities

sui:CommonOpUnits, sui:ConversionofCommonOPUnits


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312012-09-302012-06-30
Value-0.0439830.0818450.0037810.0141560.0119490.0069810.4296440.0065330.00370.002080.0080510.0067770.0108170.0132590.00340.0085790.079210.0248960.00.00.0004450.0819040.00.01750.009110.00.00.00.00.00.00.00040.00.002
Percentage of StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.00.0100.0100.00.00.00.00.00.00.0100.00.0100.0

sui:CommonOpUnits, sui:SeriesA1PreferredOpUnits


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-0.0287490.0353590.0015-0.0071690.0162830.0189760.0097540.009633320.010731-9.0017839.0238.78300.97513500.0042920.0205640.003165-0.0020240.0099030.0704130.0219850.018550.004140.0177990.023846
Percentage of StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities65.443.239.7-50.6136.3271.82.3147.5884325.7515.9-111809.5133141.581168.5229813.728676.5154213.863666.217.20.00.0-454.812.10.0125.6203.60.00.00.0

us-gaap:StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities us-gaap:StatementEquityComponents

sui:ConversionofCommonOPUnits


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-0.0439830.0818450.0037810.0141560.0119490.0069810.4296440.0065330.00370.002080.0080510.0067770.0108170.0132590.00340.0085790.079210.0248960.00.0
Percentage of StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

sui:SeriesA1PreferredOpUnits


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.0016190.01450.0036580.0155490.0066770.0077820.0040.00395130.0044-3.69133.73.6120.45.425200.001760.0084320.001298410.0009320.028870.009015
Percentage of StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities-3.717.796.7109.855.9111.50.960.5362618.9211.5-45849.054596.433280.994230.311764.763235.826107.27.10.00.09230827.61.10.051.5

us-gaap:StockIssuedDuringPeriodValueConversionOfConvertibleSecurities us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueConversionOfConvertibleSecurities

sui:CommonOpUnits, us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value0.2961.150.2160.130.4460.8840.242
Percentage of StockIssuedDuringPeriodValueConversionOfConvertibleSecurities100.0100.0100.0100.0100.0100.0100.0

sui:CommonOpUnits, us-gaap:CommonStock


Stock
Period End2021-06-302020-06-302019-06-30
Value0.0010.0010.005
Percentage of StockIssuedDuringPeriodValueConversionOfConvertibleSecurities0.30.82.1

sui:CommonOpUnits, us-gaap:NoncontrollingInterest


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value-0.297-1.15-0.216-0.131-0.446-0.884-0.135
Percentage of StockIssuedDuringPeriodValueConversionOfConvertibleSecurities-100.3-100.0-100.0-100.8-100.0-100.0-55.8

us-gaap:StockIssuedDuringPeriodValueDividendReinvestmentPlan us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:StockIssuedDuringPeriodValueDividendReinvestmentPlan

us-gaap:FairValueMeasurementsRecurring, sui:MarketableSecurities


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value01196000.001035000.00936000.0
Percentage of StockIssuedDuringPeriodValueDividendReinvestmentPlan0.0100.00.0100.00.0100.0

us-gaap:StockRedeemedOrCalledDuringPeriodShares us-gaap:StatementClassOfStock

us-gaap:StockRedeemedOrCalledDuringPeriodShares

sui:SeriesGPreferredOPUnits


Stock
Period End2020-11-04
Value20000.0
Percentage of StockRedeemedOrCalledDuringPeriodShares100.0

us-gaap:StockRedeemedOrCalledDuringPeriodValue us-gaap:StatementClassOfStock

us-gaap:StockRedeemedOrCalledDuringPeriodValue

sui:SeriesGPreferredOPUnits


Stock
Period End2020-11-04
Value2.0
Percentage of StockRedeemedOrCalledDuringPeriodValue100.0

us-gaap:TemporaryEquityAccretionToRedemptionValue

us-gaap:TemporaryEquityAccretionToRedemptionValue


Temporary
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value0.067-0.6410.0983.1920.1170.256
Percentage of TemporaryEquityAccretionToRedemptionValue100.0100.0100.0100.0100.0100.0

us-gaap:TemporaryEquityAccretionToRedemptionValue us-gaap:StatementEquityComponents

sui:TemporaryEquity


Temporary
Period End2021-06-302021-03-312020-06-302020-03-312019-06-30