XML 35 R86.htm IDEA: XBRL DOCUMENT v2.4.1.9
Derivative Financial Instruments - Additional Information (Detail) (USD $)
3 Months Ended 12 Months Ended
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Derivative [Line Items]        
Fair value of collateral agreements with affiliate counterparties   $ 213,000,000us-gaap_CollateralAlreadyPostedAggregateFairValue    
Notional values of derivative contracts   13,980,000,000invest_DerivativeNotionalAmount 16,467,000,000invest_DerivativeNotionalAmount  
Increase (decrease) in debt carrying value due to fair value hedge   (8,000,000)hsbcfc_IncreaseInDebtCarryingValueDueToFairValueHedge 5,000,000hsbcfc_IncreaseInDebtCarryingValueDueToFairValueHedge  
Losses on current derivative instruments designated as cash flow hedges are reported in OCI net of tax and totaled a loss   52,000,000hsbcfc_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTaxCurrent 97,000,000hsbcfc_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTaxCurrent  
Unrealized net losses on cash flow hedges   49,000,000us-gaap_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths    
Unrealized net losses on cash flow hedges after tax   31,000,000hsbcfc_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonthsNetOfTax    
Notional amount of maturities   2,500,000,000hsbcfc_DerivativeNotionalAmountMaturities    
Notional amount of derivatives designated as cash flow hedge, terminated during period 1,000,000,000hsbcfc_NotionalAmountOfDerivativesDesignatedAsCashFlowHegdeTerminatedDuringPeriod      
HSBC USA, Inc. [Member] | Fixed rate borrowings [Member]        
Derivative [Line Items]        
Debt issued to affiliate       1,500,000,000hsbcfc_DebtIssuedToAffiliate
/ us-gaap_DebtInstrumentAxis
= hsbcfc_FixedRateBorrowingsMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= hsbcfc_HsbcUsaIncMember
HSBC Finance Capital Trust IX [Member] | Junior Subordinated Debt [Member]        
Derivative [Line Items]        
Long-term debt, gross   1,000,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= us-gaap_JuniorSubordinatedDebtMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= hsbcfc_HsbcFinanceCapitalTrustIxMember
   
HSBC Bank USA [Member]        
Derivative [Line Items]        
Notional values of derivative contracts   14,000,000,000invest_DerivativeNotionalAmount
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
16,500,000,000invest_DerivativeNotionalAmount
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Cash Flow Hedging [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]        
Derivative [Line Items]        
Loss on cash flow hedge reclassified to income     (199,000,000)us-gaap_ProfitLoss
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember
 
HSBC Bank USA [Member]        
Derivative [Line Items]        
Fair value of collateral agreements with affiliate counterparties     $ 811,000,000us-gaap_CollateralAlreadyPostedAggregateFairValue
/ us-gaap_CounterpartyNameAxis
= hsbcfc_HsbcBankUsaMember