SYF



us-gaap:CommonStockValue

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesAuthorized

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:InterestExpense

us-gaap:IncomeTaxExpenseBenefit

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:NetIncomeLoss

us-gaap:Assets
us-gaap:VariableInterestEntitiesByClassificationOfEntity

us-gaap:Liabilities
us-gaap:VariableInterestEntitiesByClassificationOfEntity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:Goodwill

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:LongTermDebt

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetIncomeLoss

us-gaap:DepreciationDepletionAndAmortization

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

syf:ImpairedFinancingReceivablewithRelatedAllowanceInterestIncomeUnderOriginalTerms

syf:IncreaseDecreaseinInterestandFeeReceivable

syf:InterestIncomeExpenseafterRetailerShareArrangements

syf:InterestIncomeExpenseafterRetailerShareArrangementsandProvisionforLoanLoss

syf:MarketingandBusinessDevelopmentExpense

syf:NoninterestExpenseLoyaltyPrograms

syf:NoninterestIncomeDebtCancellationFees

syf:NoninterestIncomeInterchangeRevenue

syf:RetailerShareArrangements

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:DividendsCommonStockCash

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:FinancingReceivableModificationsPostModificationRecordedInvestment2

us-gaap:FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1

us-gaap:FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1

us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment

us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncreaseDecreaseInDeposits

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:InformationTechnologyAndDataProcessing

us-gaap:InterestAndDividendIncomeSecuritiesAvailableForSale

us-gaap:InterestAndFeeIncomeLoansAndLeases
us-gaap:VariableInterestEntitiesByClassificationOfEntity
us-gaap:InterestExpenseBorrowings

us-gaap:InterestExpenseDebt

us-gaap:InterestExpenseDeposits

us-gaap:InterestIncomeExpenseNet

us-gaap:InterestIncomeOperating

us-gaap:LaborAndRelatedExpense

us-gaap:NoninterestExpense

us-gaap:NoninterestIncome

us-gaap:NoninterestIncomeOtherOperatingIncome

us-gaap:OtherNoninterestExpense

us-gaap:PaymentsForProceedsFromLoansAndLeases

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsToAcquireAvailableForSaleSecurities

us-gaap:PaymentsToAcquireLoansReceivable

us-gaap:ProceedsFromIssuanceOfSecuredDebt

us-gaap:ProceedsFromIssuanceOfUnsecuredDebt

us-gaap:ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities

us-gaap:ProvisionForLoanLossesExpensed

us-gaap:RepaymentsOfSecuredDebt

us-gaap:RepaymentsOfUnsecuredDebt

syf:AccumulatedOtherComprehensiveIncomeLossOtherNetofTax

syf:AverageRateDomesticDeposits
syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement
syf:Capitalconservationbuffer

syf:DeferredTaxLiabilitiesOriginalIssueDiscount
syf:FICOCreditScore, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
syf:FinancingReceivableCreditQualityIndicatorsPercentageofClassofLoanReceivable

syf:FinancingReceivableCreditQualityIndicatorsPercentageofLoanReceivableWithNoFICOScore

syf:ImpairedFinancingReceivableNetofRelatedAllowance

syf:LongTermDebtandDuetoRelatedParties

syf:PercentageofTotalLoanReceivables3089DaysPastDue

syf:PercentageofTotalLoanReceivables90DaysPastDueandStillAccruing

syf:PercentageofTotalLoanReceivablesEqualtoGreaterthan90DaysPastDue

syf:PercentageofTotalLoanReceivablesPastDue
us-gaap:FinancialInstrument
syf:ResidentialMortgageBackedSecuritiespledgedascollateraltotheFederalReserve

syf:RestrictedCashAndEquivalentsIncludedInOtherAssets

syf:TimeDeposit100000orMorePortionThatis250000orMore

us-gaap:AccruedLiabilitiesAndOtherLiabilities

us-gaap:AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

us-gaap:AdditionalPaidInCapital
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:AssetsFairValueDisclosure

us-gaap:AvailableForSaleSecurities

us-gaap:AvailableForSaleSecuritiesAmortizedCost
us-gaap:MajorTypesOfDebtAndEquitySecurities
us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:AvailableForSaleSecuritiesDebtSecurities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:BusinessCombinationContingentConsiderationLiability
syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement
us-gaap:Capital
syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement
us-gaap:CapitalRequiredForCapitalAdequacy
us-gaap:ConsolidatedEntities, syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement
us-gaap:CapitalRequiredToBeWellCapitalized
syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement
us-gaap:CapitalToRiskWeightedAssets

us-gaap:CashAndCashEquivalentsFairValueDisclosure

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
us-gaap:BalanceSheetLocation, us-gaap:VariableInterestEntitiesByClassificationOfEntity
us-gaap:CashCollateralForBorrowedSecurities
syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement
us-gaap:CommonEquityTierOneCapital
syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement
us-gaap:CommonEquityTierOneCapitalRatio
syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement
us-gaap:CommonEquityTierOneCapitalRequiredForCapitalAdequacy
us-gaap:ConsolidatedEntities, syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement
us-gaap:CommonEquityTierOneCapitalRequiredToBeWellCapitalized
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentFairValue
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentInterestRateStatedPercentage

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsStateTaxes

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssets

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DepositsFairValueDisclosure

us-gaap:FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing

us-gaap:FinancingReceivableRecordedInvestmentNonaccrualStatus

us-gaap:FinancingReceivableRecordedInvestmentPastDue

us-gaap:FiniteLivedIntangibleAssetsGross

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:ImpairedFinancingReceivableRelatedAllowance

us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment

us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance

us-gaap:InterestBearingDepositLiabilities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:LiabilitiesFairValueDisclosure

us-gaap:LoansAndLeasesReceivableAllowance

us-gaap:LoansAndLeasesReceivableDeferredIncome

us-gaap:LoansAndLeasesReceivableNetOfDeferredIncome

us-gaap:LoansHeldForSaleFairValueDisclosure

us-gaap:LoansReceivableFairValueDisclosure

us-gaap:LoansReceivableHeldForSaleAmount
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:VariableInterestEntitiesByClassificationOfEntity
us-gaap:LongTermDebtFairValue
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LongtermDebtWeightedAverageInterestRate

us-gaap:NoninterestBearingDepositLiabilities

us-gaap:OtherAssets

us-gaap:OtherAssetsFairValueDisclosure
us-gaap:VariableInterestEntitiesByClassificationOfEntity
us-gaap:OtherLiabilities
us-gaap:BalanceSheetLocation, us-gaap:VariableInterestEntitiesByClassificationOfEntity
us-gaap:RestrictedCashEquivalents
us-gaap:DebtInstrument, us-gaap:VariableInterestEntitiesByClassificationOfEntity
us-gaap:SecuredDebt

us-gaap:SeniorNotes
syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement
us-gaap:TierOneLeverageCapital
syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement
us-gaap:TierOneLeverageCapitalRequiredForCapitalAdequacy
us-gaap:ConsolidatedEntities, syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement
us-gaap:TierOneLeverageCapitalRequiredToBeWellCapitalized
syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement
us-gaap:TierOneLeverageCapitalToAverageAssets
syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement
us-gaap:TierOneRiskBasedCapital
syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement
us-gaap:TierOneRiskBasedCapitalRequiredForCapitalAdequacy
us-gaap:ConsolidatedEntities, syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement
us-gaap:TierOneRiskBasedCapitalRequiredToBeWellCapitalized
syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement
us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets

us-gaap:TimeDeposits100000OrMore

us-gaap:TreasuryStockShares

us-gaap:TreasuryStockValue

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:UnusedCommitmentsToExtendCredit

Stockholders Equity Note Stock Split Conversion Ratio1

Common Stock Value

us-gaap:CommonStockValue



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value1000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.00.0
bPercentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

Common Stock Par Or Stated Value Per Share

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding



Period End2019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-30
Value661686708738758770790807817831836836836835835782705705705705
bPercentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic



Period End2019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-30
Value658683706734752763787804813828834834834834834782705705705705
bPercentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-06-302013-12-31
Value8338338338338338338338338338338338338338338338338338338338337050
bPercentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-08-052014-06-302013-12-31
Value6536686887187187467607707827958108178258338338338338338338338337057050
bPercentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

Common Stock Shares Authorized

us-gaap:CommonStockSharesAuthorized



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-06-302013-12-31
Value4000400040004000400040004000400040004000400040004000400040004000400040004000400040000
bPercentage of CommonStockSharesAuthorized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value1.61.251.571.090.910.930.840.490.70.620.610.70.730.590.70.660.690.650.660.640.70.670.790.630.910.760.51
bPercentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value1.61.241.561.090.910.920.830.490.70.610.610.70.730.580.70.650.690.650.660.640.70.670.790.630.910.760.51
bPercentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Interest Expense

us-gaap:InterestExpense



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value592583560543488437402375357333326319315303311301289270275282244206190188183178193
bPercentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
aPercentage of Revenues0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value319276355229222196207490324292283332359282346321345320331322331292332249380320214
bPercentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
aPercentage of Revenues0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value10558661126820665689618361564502497547600500592526571538548530546475561439640530
bPercentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
aPercentage of Revenues0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss

us-gaap:NetIncomeLoss



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value10568531107783671696640385555496499576604489582547574541552531548472558443641536359
bPercentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
aPercentage of Revenues0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets

us-gaap:Assets



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value105943106388105384106792104545991229555995808925489114089050902078715982384816568413579442757507272175707734696317559085
bPercentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
aPercentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:VariableInterestEntitiesByClassificationOfEntity

us-gaap:VariableInterestEntityPrimaryBeneficiary



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value2662526165250942726726032263582496725052217232237721912229992216822449236142447924239244202384826779262252623124786
bPercentage of Assets25.124.623.825.524.926.626.126.123.524.624.625.525.427.228.929.130.532.232.835.435.741.541.9
aPercentage of Assets41.941.535.735.432.832.230.529.128.927.225.425.524.624.623.526.126.126.624.925.523.824.625.1

Liabilities

us-gaap:Liabilities



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value9082391654906759211490549846648120381574781467680874687760117317868669684527153167284641726168565229635285678253125
bPercentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
aPercentage of Assets89.989.986.586.284.884.784.785.083.883.484.084.383.984.384.485.185.085.486.686.386.086.285.7

us-gaap:VariableInterestEntitiesByClassificationOfEntity

us-gaap:VariableInterestEntityPrimaryBeneficiary



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value1094111970121231447514222122061224412527119111222312451124091243112258124451363313693139991418415335154221545215590
bPercentage of Liabilities12.013.113.415.715.714.415.115.415.215.916.716.317.017.918.219.120.421.823.023.524.327.229.3
aPercentage of Assets26.424.521.020.319.518.517.216.215.214.914.313.814.013.412.913.112.812.313.613.611.511.310.3

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value105943106388105384106792104545991229555995808925489114089050902078715982384816568413579442757507272175707734696317559085
bPercentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
aPercentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312011-12-31
Value151201473414709146781399614458143561423414402143321436314196139811371513204126041215811578110361047899416393604259605583551845824328
bPercentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
aPercentage of Assets0.00.00.00.010.10.010.113.513.815.215.315.315.016.216.616.015.716.115.715.614.915.014.613.413.714.013.814.3

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312011-12-31
Value11461117551296393961206815675130441160213915120201139293211358811787125001232512271106211121811828148086782533123192670311013341187
bPercentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
aPercentage of Assets0.00.00.00.03.90.010.720.215.615.414.015.414.615.314.315.610.312.813.215.012.113.715.811.58.812.311.010.8

Goodwill

us-gaap:Goodwill



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312012-12-31
Value107810781076102410241024991991991991992949949949949949949949949949949949949936
bPercentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
aPercentage of Assets0.01.61.51.31.31.31.31.21.11.21.21.11.11.11.11.11.01.01.01.01.01.01.01.0

Deferred Tax Assets Liabilities Net

us-gaap:DeferredTaxAssetsLiabilitiesNet



Period End2018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value2932526331015603408
bPercentage of DeferredTaxAssetsLiabilitiesNet100.0100.0100.0100.0100.0100.0
aPercentage of Assets0.70.81.20.70.30.3

Long Term Debt

us-gaap:LongTermDebt



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value2036321244218912399623741217212101520799198992070920194201472016724279
bPercentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
aPercentage of Liabilities33.927.626.527.027.025.525.525.925.726.226.124.123.222.4

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value115331062799398986835579067334680965436109572453304861436438753293274621721631107954800
bPercentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0
aPercentage of Liabilities0.00.00.91.72.63.44.14.65.76.46.67.07.78.08.48.39.09.39.29.811.011.612.7

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value239919662289257626852166191524702928176817502036181514721500
bPercentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
aPercentage of Revenues0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-1570-31823810-6285-10477-3029755-7162-1288-23801420-8169-3916-24361201
bPercentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
aPercentage of Revenues0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-125368-3182181441732579-31323792551240-109918663902251-2526
bPercentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
aPercentage of Revenues0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss

us-gaap:NetIncomeLoss



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value10568531107783671696640385555496499576604489582547574541552531548472558443641536359
bPercentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
aPercentage of Revenues0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value94928780787371676959595556545447464437353332312725
bPercentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
aPercentage of Revenues0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Increase Decrease In Other Operating Capital Net

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value-161-140-144-149-130-152-170-161-165-151-172-137-127-125-136-140-99-76-114-245-25-251-1-30
bPercentage of IncreaseDecreaseInOtherOperatingCapitalNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
aPercentage of Revenues0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Cash And Cash Equivalents Period Increase Decrease

syf:ImpairedFinancingReceivablewithRelatedAllowanceInterestIncomeUnderOriginalTerms



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value6866647268656260585351484643424238373636343636434745
bPercentage of ImpairedFinancingReceivablewithRelatedAllowanceInterestIncomeUnderOriginalTerms100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

syf:IncreaseDecreaseinInterestandFeeReceivable



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value297213-80244520-1618814136-403247098-63145213-61-134206-94-43-13713677
bPercentage of IncreaseDecreaseinInterestandFeeReceivable100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

syf:InterestIncomeExpenseafterRetailerShareArrangements



Period End2019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value327234783335308431223137307129682903281727242548253924742380228622152280218621302149218720231961
bPercentage of InterestIncomeExpenseafterRetailerShareArrangements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

syf:InterestIncomeExpenseafterRetailerShareArrangementsandProvisionforLoanLoss



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value23542098241320261884180417601783176116421597174117381527163616511678154615281483151114491385136914821295
bPercentage of InterestIncomeExpenseafterRetailerShareArrangementsandProvisionforLoanLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

syf:MarketingandBusinessDevelopmentExpense



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value1391351231661311101211561241249413092107941281151088216511597831175453
bPercentage of MarketingandBusinessDevelopmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

syf:NoninterestExpenseLoyaltyPrograms



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value203192167208196192155193168206137157145135110125122947891846343575858
bPercentage of NoninterestExpenseLoyaltyPrograms100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

syf:NoninterestIncomeDebtCancellationFees



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value6469687065666669676868686763646261616567687070887477
bPercentage of NoninterestIncomeDebtCancellationFees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

syf:NoninterestIncomeInterchangeRevenue



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value1971941651931821771581791641651451671541511301471351231001201019276898281
bPercentage of NoninterestIncomeInterchangeRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

syf:RetailerShareArrangements



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value1016859954855871653720779805669684811757664670734723621660698693590594662680547
bPercentage of RetailerShareArrangements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value26292213-7172820141013131111810
bPercentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-424-11482917-1895-361917162357-2271120111882031
bPercentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockDividendsPerShareDeclared



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value0.220.210.210.209999999999999960.210.150.150.150000000000000080.150.130.130.130.130.00.00.00.0
bPercentage of CommonStockDividendsPerShareDeclared100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:DividendsCommonStockCash



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value145145150151156113114118118105105107
bPercentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectiveIncomeTaxRateContinuingOperations



Period End2018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312014-06-302013-06-30
Value0.2490.220.2440.3690.3710.3620.3820.374
bPercentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableModificationsPostModificationRecordedInvestment2



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value22719321624222819722219621117617316816511913313813611012011410897109121123117
bPercentage of FinancingReceivableModificationsPostModificationRecordedInvestment2100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value15099.019777.019028.0-4649.018793.019557.023769.0-2267.019524.019362.019787.05668.014813.07779.010326.03438.012455.010985.011442.0-2064.014619.013000.015241.0-21722.026393.022430.0
bPercentage of FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value374844-104345540414040123025217252123-2302629-364741
bPercentage of FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value1078106411362311271090106143959916884277997797708728723725-8725760799-22910942
bPercentage of ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value1111111213121212131112121212121212121313141415112424
bPercentage of ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value13751129146210128938928478758797887829089637719288689198618838538797648906921021856573
bPercentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInDeposits



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value324158036171733082487-3203015821276-7982235338214451292290027762808-211226622273103149235571137
bPercentage of IncreaseDecreaseInDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value-111183-118-120-73260-148-22348262-23142713-6-36-62-107927-67-28-42-59-39-14
bPercentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InformationTechnologyAndDataProcessing



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value1271231131181059910499968890888781828377746360475352524748
bPercentage of InformationTechnologyAndDataProcessing100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestAndDividendIncomeSecuritiesAvailableForSale



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value91102991027793725851433628252122151311108765535
bPercentage of InterestAndDividendIncomeSecuritiesAvailableForSale100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestAndFeeIncomeLoansAndLeases



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value48904636468747744617408141724233418239273877391937713494349834943379316631403252311629202928303228832681
bPercentage of InterestAndFeeIncomeLoansAndLeases100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:VariableInterestEntitiesByClassificationOfEntity

us-gaap:InterestExpenseBorrowings

us-gaap:VariableInterestEntityPrimaryBeneficiary



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value88901001048680747065636564635958565453525757
bPercentage of InterestExpenseBorrowings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseDebt



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value9396858988847972736867676465818076718278460000
bPercentage of InterestExpenseDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:InterestExpenseDeposits



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value41139737535031427324923321920219418818817917216515914613713912610996939493
bPercentage of InterestExpenseDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeExpenseNet



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value438941554226433342063737384239163876363735873628348132123209320831032907287529782879272027432849270325082511
bPercentage of InterestIncomeExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeOperating



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value498147384786487646944174424442914233397039133947379635153520350933923177315032603123292629333037288626862704
bPercentage of InterestIncomeOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LaborAndRelatedExpense



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value359358353353365351358333335321325315311301280285268250239227239207193190173173
bPercentage of LaborAndRelatedExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoninterestExpense



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value10641059104310781054975988970958911908918859839800870843805746792728797610807575563
bPercentage of NoninterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoninterestIncome



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value859092646363756276579385848392878412010116296112115130114124
bPercentage of NoninterestIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoninterestIncomeOtherOperatingIncome



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value27192691212671330177848310301466111312101624
bPercentage of NoninterestIncomeOtherOperatingIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoninterestExpense



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value234212222210221238239223242220248221195196198209221217200188168285152291181182
bPercentage of OtherNoninterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromLoansAndLeases



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value31092667-3760649822802329-2659553225273097-1918631931603171-1558541924673090-2124556626022771-218448562036
bPercentage of PaymentsForProceedsFromLoansAndLeases100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForRepurchaseOfCommonStock



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value5507259670967491410431390438238238238000
bPercentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:PaymentsOfDividendsCommonStock



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value145145150151156113114118118105105107107000
bPercentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:PaymentsToAcquireAvailableForSaleSecurities



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value95422611963466179624632546191228134462221396765521335516241284183912763732311023
bPercentage of PaymentsToAcquireAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireLoansReceivable



Period End2018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-312013-09-30
Value841734200360007300054-512593100000
bPercentage of PaymentsToAcquireLoansReceivable100.0100.00.00.0100.00.00.0100.00.00.00.0100.0100.0100.0100.00.00.00.00.00.0

us-gaap:ProceedsFromIssuanceOfSecuredDebt



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value3001547149860023727041417193081182075025159914197481075631142575013764003400000
bPercentage of ProceedsFromIssuanceOfSecuredDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:ProceedsFromIssuanceOfUnsecuredDebt



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-03-312013-12-31
Value7450124000747497991074100695498010001003-699875000
bPercentage of ProceedsFromIssuanceOfUnsecuredDebt100.00.0100.00.00.0100.0100.0100.00.0100.00.00.0100.0100.00.0100.0100.0100.0100.0100.00.00.0

us-gaap:ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value26691883221417071293195071877591216763993424278321379117137173178955512
bPercentage of ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForLoanLossesExpensed



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value101911988591452145112801362135413101326130610769861021903823702740687797675681764818541666
bPercentage of ProvisionForLoanLossesExpensed100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfSecuredDebt



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value1330170038473503567501701132611261050708501425160919151112939129418991500422292772032894
bPercentage of RepaymentsOfSecuredDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfUnsecuredDebt



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-03-312013-12-31
Value600500100000007005000000150026515005005002594000
bPercentage of RepaymentsOfUnsecuredDebt100.0100.0100.00.00.00.00.0100.0100.00.00.00.00.0100.0100.0100.0100.0100.0100.00.00.00.0

syf:AccumulatedOtherComprehensiveIncomeLossOtherNetofTax



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value-14-11-10-5-28-27-27-28-15-15-15-15-14-14-14-12-1-1-1-2-1-1-1
bPercentage of AccumulatedOtherComprehensiveIncomeLossOtherNetofTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

syf:AverageRateDomesticDeposits



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value0.0250.0240.0240.020.0190.0190.0180.0160.0160.0150.0150.0150.0160.0160.0160.016
bPercentage of AverageRateDomesticDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement

syf:Capitalconservationbuffer

syf:BaselIII



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0.0250.0250.0250.018750.018750.018750.018750.01250.01250.01250.01250.006250.006250.006250.00625
bPercentage of Capitalconservationbuffer100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

syf:DeferredTaxLiabilitiesOriginalIssueDiscount



Period End2018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value11981053989332488508
bPercentage of DeferredTaxLiabilitiesOriginalIssueDiscount100.0100.0100.0100.0100.0100.0

syf:FICOCreditScore, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

syf:FinancingReceivableCreditQualityIndicatorsPercentageofClassofLoanReceivable

syf:SixHundredandOnetoSixHundredandSixty, us-gaap:CommercialPortfolioSegment



Period End2019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value0.050.050.050.060.070.070.070.070.090.0850.0850.0860.0910.0870.0890.090.0920.0860.0850.0860.094
bPercentage of FinancingReceivableCreditQualityIndicatorsPercentageofClassofLoanReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

syf:FinancingReceivableCreditQualityIndicatorsPercentageofLoanReceivableWithNoFICOScore



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value0.0090.0050.0060.0050.0050.0060.0080.0060.0070.0070.0060.0070.0080.0090.0070.0090.0070.0070.0080.0080.0130.0080.011
bPercentage of FinancingReceivableCreditQualityIndicatorsPercentageofLoanReceivableWithNoFICOScore100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

syf:ImpairedFinancingReceivableNetofRelatedAllowance



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value577560544659641624610597596575559544532517510504494481482504505560
bPercentage of ImpairedFinancingReceivableNetofRelatedAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

syf:LongTermDebtandDuetoRelatedParties



Period End2018-12-312017-12-312016-12-312016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value23996207992014719295204762434423881236922406027460275842297324321
bPercentage of LongTermDebtandDuetoRelatedParties100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

syf:PercentageofTotalLoanReceivables3089DaysPastDue



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value0.0240.0230.0240.0250.0250.0220.0220.0240.0260.0240.0220.0230.0240.0210.0210.0220.0230.020.020.0220.0240.0220.024
bPercentage of PercentageofTotalLoanReceivables3089DaysPastDue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

syf:PercentageofTotalLoanReceivables90DaysPastDueandStillAccruing



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value0.0210.0220.0250.0230.0210.020.0230.0230.0220.0190.0210.020.0190.0170.0180.0190.0170.0150.0180.0190.0180.0170.02
bPercentage of PercentageofTotalLoanReceivables90DaysPastDueandStillAccruing100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

syf:PercentageofTotalLoanReceivablesEqualtoGreaterthan90DaysPastDue



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value0.0210.0220.0250.0230.0210.020.0230.0230.0220.0190.0210.020.0190.0170.0180.0190.0170.0150.0180.0190.0190.0170.02
bPercentage of PercentageofTotalLoanReceivablesEqualtoGreaterthan90DaysPastDue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

syf:PercentageofTotalLoanReceivablesPastDue



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value0.0450.0440.0490.0480.0460.0420.0450.0470.0480.0430.0430.0430.0430.0380.0390.0410.040.0350.0380.0410.0430.0380.043
bPercentage of PercentageofTotalLoanReceivablesPastDue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

syf:ResidentialMortgageBackedSecuritiespledgedascollateraltotheFederalReserve

us-gaap:ResidentialMortgageBackedSecurities



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value343343307313310344
bPercentage of ResidentialMortgageBackedSecuritiespledgedascollateraltotheFederalReserve100.0100.0100.0100.0100.0100.0

syf:RestrictedCashAndEquivalentsIncludedInOtherAssets



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value2603903309802032151130215173867307347
bPercentage of RestrictedCashAndEquivalentsIncludedInOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

syf:TimeDeposit100000orMorePortionThatis250000orMore



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value77007600730069006700610058005300510048004500440043004100400036002800
bPercentage of TimeDeposit100000orMorePortionThatis250000orMore100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedLiabilitiesAndOtherLiabilities



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value44884765472440994491393236184287379332142888380931962947299937402855270826752814325533473085
bPercentage of AccruedLiabilitiesAndOtherLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value-2-5-20-32-48-43-39-19-12-15-19-18771-10-1-310-4-4-9
bPercentage of AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:AdditionalPaidInCapital



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value95209500948994829470948694709445942994159405939393819370935993519431942294189408940163990
bPercentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:AssetsFairValueDisclosure

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value45386100545760127240673662154427325839385270504932922659288630783531361330511523252227175
bPercentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecurities



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value45846147550660627281677962594488331739975328511033562723294931423596368231211598325298236
bPercentage of AvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesAmortizedCost



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value45866153553161097349684063164519333640205357513833452712294731573598368731201598331304251
bPercentage of AvailableForSaleSecuritiesAmortizedCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:MajorTypesOfDebtAndEquitySecurities

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss

us-gaap:ResidentialMortgageBackedSecurities



Period End2018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value541522282800032310107
bPercentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.00.0100.00.0100.0

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue



Period End2019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value1991270462857594508465231981934352945222985116431855282765251016337307223164
bPercentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue



Period End2019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value8661278105510598731073105583658414047561109164737811912211640
bPercentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:AvailableForSaleSecuritiesDebtSecurities

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:AssetBackedSecurities



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value22402177204919851788780
bPercentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:BusinessCombinationContingentConsiderationLiability

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value192525263129
bPercentage of BusinessCombinationContingentConsiderationLiability100.0100.0100.0100.0100.0100.0

syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement

us-gaap:Capital

syf:BaselIII



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value1434513893138131401313315138851387813954141261402213993101019559906487188443794677127712
bPercentage of Capital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement

us-gaap:CapitalRequiredForCapitalAdequacy

syf:BaselIII



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value7262711169867339687561866121645460585983581048254407415839454071370034943255
bPercentage of CapitalRequiredForCapitalAdequacy100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement

us-gaap:CapitalRequiredToBeWellCapitalized

srt:Subsidiaries, syf:BaselIII



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value786876587599793473876675
bPercentage of CapitalRequiredToBeWellCapitalized100.0100.0100.0100.0100.0100.0

syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement

us-gaap:CapitalToRiskWeightedAssets

syf:BaselIII



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.1580.1560.1580.1530.1550.180.1810.1730.1870.1870.1930.1670.1740.1740.1770.1660.1720.1770.1896
bPercentage of CapitalToRiskWeightedAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashAndCashEquivalentsFairValueDisclosure



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value11461117551296393961206815675130441160213915120201139293211358811787125001232512271106211121811828
bPercentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value1172112145132931037612271158901417411817140881288711699966812716
bPercentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation, us-gaap:VariableInterestEntitiesByClassificationOfEntity

us-gaap:CashCollateralForBorrowedSecurities

us-gaap:OtherAssets, us-gaap:VariableInterestEntityPrimaryBeneficiary



Period End2018-12-312018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value803104855516651031001181175841181171171000
bPercentage of CashCollateralForBorrowedSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement

us-gaap:CommonEquityTierOneCapital

syf:BaselIII



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-31
Value13155127241266112801121781285812863128901312513135
bPercentage of CommonEquityTierOneCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement

us-gaap:CommonEquityTierOneCapitalRatio

syf:BaselIII



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-31
Value0.1450.1430.1450.140.1420.1660.1680.160.1730.172
bPercentage of CommonEquityTierOneCapitalRatio100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement

us-gaap:CommonEquityTierOneCapitalRequiredForCapitalAdequacy

syf:BaselIII



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-31
Value4085400039304128386734803443363034083428
bPercentage of CommonEquityTierOneCapitalRequiredForCapitalAdequacy100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement

us-gaap:CommonEquityTierOneCapitalRequiredToBeWellCapitalized

srt:Subsidiaries, syf:BaselIII



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value511449784940515748024339
bPercentage of CommonEquityTierOneCapitalRequiredToBeWellCapitalized100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentFairValue

us-gaap:FairValueInputsLevel2, us-gaap:SeniorNotes



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value98359561980990629332941187458471819786417908787580577268669065745640460247153660
bPercentage of DebtInstrumentFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentInterestRateStatedPercentage

syf:FloatingSeniorSecuredNotes, us-gaap:SeniorNotes



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-03-312015-12-31
Value0.03520.03810.03970.03810.03580.03580.03020.02620.0180.016
bPercentage of DebtInstrumentInterestRateStatedPercentage100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxLiabilities



Period End2018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value151813141343596770748
bPercentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsGross



Period End2018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value181115661981162013831156
bPercentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsStateTaxes



Period End2018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value110951541355640
bPercentage of DeferredTaxAssetsStateTaxes100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses



Period End2018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value158813811662132911471027
bPercentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssets



Period End2018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value187141222246229216
bPercentage of DeferredTaxLiabilitiesGoodwillAndIntangibleAssets100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesOther



Period End2018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value133120132185324
bPercentage of DeferredTaxLiabilitiesOther100.0100.0100.0100.0100.0100.0

us-gaap:DepositsFairValueDisclosure



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value6635865897640976394262235589605666256754548775333352013525075048647103456274384040946382083557935442
bPercentage of DepositsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value171517592004211618291558177218641703143315051542133111411210127011009311054116010499071119
bPercentage of FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableRecordedInvestmentNonaccrualStatus



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value54454345423432232222212
bPercentage of FinancingReceivableRecordedInvestmentNonaccrualStatus100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableRecordedInvestmentPastDue



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value37233625395744304021329335213831369432083120329530082585253827722553217122092536241620972488
bPercentage of FinancingReceivableRecordedInvestmentPastDue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsGross



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value2451241223822192211218081681161015891550154213871461138813421298120110921036969870854641
bPercentage of FiniteLivedIntangibleAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsNet



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value11771215125911371105863780749772787826712733704702701646575557519449463300
bPercentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ImpairedFinancingReceivableRelatedAllowance



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value515503520548512476469446390357341324284264268259242238244220213251
bPercentage of ImpairedFinancingReceivableRelatedAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value10921063106412071153110010791043986932900868816781778763736719726724718811
bPercentage of ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value98996596610901038988965930877828795766719688681665640626625621649704
bPercentage of ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestBearingDepositLiabilities



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value6567765382637876373862030587345628556276542325265951359518964961146220447214329540408376293478834847324803025825360
bPercentage of InterestBearingDepositLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:LiabilitiesFairValueDisclosure

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value192525263129
bPercentage of LiabilitiesFairValueDisclosure100.0100.0100.0100.0100.0100.0

us-gaap:LoansAndLeasesReceivableAllowance



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value56075809594264276223585957385574536150014676434441153894362034973371330232553236310230062998289227922784271822742052
bPercentage of LoansAndLeasesReceivableAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LoansAndLeasesReceivableDeferredIncome



Period End2018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value105-51071079795989882727683634620584629288
bPercentage of LoansAndLeasesReceivableDeferredIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LoansAndLeasesReceivableNetOfDeferredIncome



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value8320781796804059313987521788797785381947769287545873350763377064468282658496829063520614315824861286567675487357254
bPercentage of LoansAndLeasesReceivableNetOfDeferredIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LoansHeldForSaleFairValueDisclosure



Period End2019-09-302019-06-302019-03-312015-06-302015-03-312014-12-31
Value8182809680520374351
bPercentage of LoansHeldForSaleFairValueDisclosure100.0100.0100.00.0100.0100.0

us-gaap:LoansReceivableFairValueDisclosure



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value8675385260827399530590048818238116985871802487869576372795667344471413689687138666552642726115164113
bPercentage of LoansReceivableFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LoansReceivableHeldForSaleAmount



Period End2019-09-302019-06-302019-03-312018-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value8182809680520000359332149314580
bPercentage of LoansReceivableHeldForSaleAmount100.0100.0100.00.00.00.00.0100.0100.0100.0100.00.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:VariableInterestEntitiesByClassificationOfEntity

us-gaap:LongTermDebtFairValue

us-gaap:FairValueInputsLevel2, us-gaap:VariableInterestEntityPrimaryBeneficiary



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-31
Value7627893580088626856579327986832382509191
bPercentage of LongTermDebtFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:LongtermDebtWeightedAverageInterestRate

syf:FixedSeniorUnsecuredNotes, us-gaap:SeniorNotes



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value0.03940.03980.03910.03590.03590.03590.03590.03590.03530.03410.03410.03410.03410.0340.0340.034
bPercentage of LongtermDebtWeightedAverageInterestRate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoninterestBearingDepositLiabilities



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value295263273281287277285212222226246159204207256152140143162108209204359
bPercentage of NoninterestBearingDepositLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherAssets



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value1861211020652461176917612370160519862888183821222004183323272225183117941524243117801358919
bPercentage of OtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherAssetsFairValueDisclosure



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value26039033098020321511302151738673073473793048443913173012481104
bPercentage of OtherAssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:VariableInterestEntitiesByClassificationOfEntity

us-gaap:OtherLiabilities

us-gaap:VariableInterestEntityPrimaryBeneficiary



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value292932363536303020191821202222305351367368331338228
bPercentage of OtherLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation, us-gaap:VariableInterestEntitiesByClassificationOfEntity

us-gaap:RestrictedCashEquivalents

us-gaap:OtherAssets, us-gaap:VariableInterestEntityPrimaryBeneficiary



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value587168803655955
bPercentage of RestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrument, us-gaap:VariableInterestEntitiesByClassificationOfEntity

us-gaap:SecuredDebt

syf:FixedSecuritizedBorrowings, us-gaap:VariableInterestEntityPrimaryBeneficiary



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-31
Value7512884179918664866280208064834782418731
bPercentage of SecuredDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SeniorNotes



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value94519303980095579554955188018302800885057761775977567059655965905590459345923593
bPercentage of SeniorNotes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement

us-gaap:TierOneLeverageCapital

syf:BaselIII



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value131551272412661128011217812858128631289013125130371303993128836838380737781734371437179
bPercentage of TierOneLeverageCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement

us-gaap:TierOneLeverageCapitalRequiredForCapitalAdequacy

syf:BaselIII



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value4178411641304157394537823766372435933523352428162659247224822387221220441995
bPercentage of TierOneLeverageCapitalRequiredForCapitalAdequacy100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement

us-gaap:TierOneLeverageCapitalRequiredToBeWellCapitalized

srt:Subsidiaries, syf:BaselIII



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value450545024501451542373854
bPercentage of TierOneLeverageCapitalRequiredToBeWellCapitalized100.0100.0100.0100.0100.0100.0

syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement

us-gaap:TierOneLeverageCapitalToAverageAssets

syf:BaselIII



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.1260.1240.1230.1230.1230.1360.1370.1380.1460.1480.1480.1320.1330.1360.130.130.1330.140.1442
bPercentage of TierOneLeverageCapitalToAverageAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement

us-gaap:TierOneRiskBasedCapital

syf:BaselIII



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value131551272412661128011217812858128631289013125130371303993128836838380737781734371437179
bPercentage of TierOneRiskBasedCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement

us-gaap:TierOneRiskBasedCapitalRequiredForCapitalAdequacy

syf:BaselIII



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value5446533352405505515646394591484045444488435836193306311829593053277526202441
bPercentage of TierOneRiskBasedCapitalRequiredForCapitalAdequacy100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement

us-gaap:TierOneRiskBasedCapitalRequiredToBeWellCapitalized

srt:Subsidiaries, syf:BaselIII



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value629561266080634859105340
bPercentage of TierOneRiskBasedCapitalRequiredToBeWellCapitalized100.0100.0100.0100.0100.0100.0

syf:RegulatoryCapitalRequirementsUnderBankingRegulationsByMeasurement

us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets

syf:BaselIII



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.1450.1430.1450.140.1420.1660.1680.160.1730.1740.180.1540.160.1610.1640.1530.1590.1640.176
bPercentage of TierOneRiskBasedCapitalToRiskWeightedAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TimeDeposits100000OrMore



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value22100219002120020200197001820017400162001580015100142001420014000134001290011900115001080099009400883077715695
bPercentage of TimeDeposits100000OrMore100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockShares



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value1801651451151158773635138231680
bPercentage of TreasuryStockShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:TreasuryStockValue



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value58905351466437293731284223631957153111447124752380
bPercentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value19317016616417916817917311110810399908583797975756836153131
bPercentage of UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:UnusedCommitmentsToExtendCredit

us-gaap:CreditCardReceivables



Period End2019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-31
Value435000425000418000418000414000378000373000370000366000348000
bPercentage of UnusedCommitmentsToExtendCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0