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Long-Term Debt - Long Term Debt Table (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Debt Instrument [Line Items]    
Unamortized Discount (33)us-gaap_DebtInstrumentUnamortizedDiscount $ (43)us-gaap_DebtInstrumentUnamortizedDiscount
HSBC acquisition purchase accounting fair value adjustments 22hsbcfc_AcquisitionPurchaseAccountingFairValueAdjustmentsLongTermDebt 24hsbcfc_AcquisitionPurchaseAccountingFairValueAdjustmentsLongTermDebt
Long-term debt 16,427us-gaap_LongTermDebt 20,839us-gaap_LongTermDebt
Secured Debt [Member] | 5.00%-5.99% Fixed Rate Senior Debt Due 2015 [Member]    
Debt Instrument [Line Items]    
Long-term debt, gross 16us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A5.005.99FixedRateSeniorDebtDue2015Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember		 90us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A5.005.99FixedRateSeniorDebtDue2015Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
Other Fixed Rate Senior Debt [Member] | 1.00%-1.99% Other Fixed Rate Senior Debt [Member]    
Debt Instrument [Line Items]    
Long-term debt, gross 0us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A1.001.99OtherFixedRateSeniorDebtMember
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember		 13us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A1.001.99OtherFixedRateSeniorDebtMember
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember
Other Fixed Rate Senior Debt [Member] | 2.00%-2.99% Other Fixed Rate Senior Debt Due 2015 [Member]    
Debt Instrument [Line Items]    
Long-term debt, gross 62us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A2.002.99OtherFixedRateSeniorDebtDue2015Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember		 206us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A2.002.99OtherFixedRateSeniorDebtDue2015Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember
Other Fixed Rate Senior Debt [Member] | 3.00%-3.99% Other Fixed Rate Senior Debt Due 2015-2016 [Member]    
Debt Instrument [Line Items]    
Long-term debt, gross 379us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A3.003.99OtherFixedRateSeniorDebtDue2016Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember		 420us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A3.003.99OtherFixedRateSeniorDebtDue2016Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember
Other Fixed Rate Senior Debt [Member] | 4.00%-4.99% Other Fixed Rate Senior Debt Due 2015-2018 [Member]    
Debt Instrument [Line Items]    
Long-term debt, gross 1,855us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A4.004.99OtherFixedRateSeniorDebtDue2018Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember		 2,444us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A4.004.99OtherFixedRateSeniorDebtDue2018Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember
Other Fixed Rate Senior Debt [Member] | 5.00%-5.49% Other Fixed Rate Senior Debt Due 2015-2021 [Member]    
Debt Instrument [Line Items]    
Long-term debt, gross 4,246us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A5.005.49OtherFixedRateSeniorDebtDue20152021Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember		 5,358us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A5.005.49OtherFixedRateSeniorDebtDue20152021Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember
Other Fixed Rate Senior Debt [Member] | 5.50%-5.99% Other Fixed Rate Senior Debt Due 2015-2018 [Member]    
Debt Instrument [Line Items]    
Long-term debt, gross 2,083us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A5.505.99OtherFixedRateSeniorDebtDue20152018Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember		 2,339us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A5.505.99OtherFixedRateSeniorDebtDue20152018Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember
Other Fixed Rate Senior Debt [Member] | 6.00%-6.49% Other Fixed Rate Senior Debt Due 2015-2017 [Member]    
Debt Instrument [Line Items]    
Long-term debt, gross 1,463us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A6.006.49OtherFixedRateSeniorDebtDue2017Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember		 1,714us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A6.006.49OtherFixedRateSeniorDebtDue2017Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember
Other Fixed Rate Senior Debt [Member] | 7.00%-7.49% Other Fixed Rate Senior Debt Due 2023-2032 [Member]    
Debt Instrument [Line Items]    
Long-term debt, gross 46us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A7.007.49OtherFixedRateSeniorDebtDue2032Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember		 42us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A7.007.49OtherFixedRateSeniorDebtDue2032Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember
Other Fixed Rate Senior Debt [Member] | 7.50%-7.99 Other Fixed Rate Senior Debt Due 2019-2032 [Member]    
Debt Instrument [Line Items]    
Long-term debt, gross 276us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A7.507.99OtherFixedRateSeniorDebtDue2032Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember		 288us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A7.507.99OtherFixedRateSeniorDebtDue2032Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember
Variable Interest Rate Debt [Member] | .32%-2.67% Secured Financings Due 2015-2018 [Member]    
Debt Instrument [Line Items]    
Long-term debt, gross 1,473us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A322.67SecuredFinancingsDue2018Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_VariableInterestRateDebtMember		 2,110us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A322.67SecuredFinancingsDue2018Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_VariableInterestRateDebtMember
Variable Interest Rate Debt [Member] | Other Variable Interest Rate Senior Debt - .49% to 3.08%; due 2015 to 2016 [Member]    
Debt Instrument [Line Items]    
Long-term debt, gross 1,300us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= hsbcfc_OtherVariableInterestRateSeniorDebt.49to3.08due2016Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_VariableInterestRateDebtMember		 2,595us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= hsbcfc_OtherVariableInterestRateSeniorDebt.49to3.08due2016Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_VariableInterestRateDebtMember
Subordinated Debt [Member]    
Debt Instrument [Line Items]    
Long-term debt, gross 2,208us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember		 2,208us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
Junior subordinated notes issued to capital trusts [Member]    
Debt Instrument [Line Items]    
Long-term debt, gross 1,031us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_JuniorSubordinatedNotesIssuedToCapitalTrustsMember		 $ 1,031us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_JuniorSubordinatedNotesIssuedToCapitalTrustsMember
Stated percentage 5.91%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_JuniorSubordinatedNotesIssuedToCapitalTrustsMember		  
Minimum [Member] | Secured Debt [Member] | 5.00%-5.99% Fixed Rate Senior Debt Due 2015 [Member]    
Debt Instrument [Line Items]    
Stated percentage 5.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A5.005.99FixedRateSeniorDebtDue2015Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		  
Minimum [Member] | Other Fixed Rate Senior Debt [Member] | 1.00%-1.99% Other Fixed Rate Senior Debt [Member]    
Debt Instrument [Line Items]    
Stated percentage 1.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A1.001.99OtherFixedRateSeniorDebtMember
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		  
Minimum [Member] | Other Fixed Rate Senior Debt [Member] | 2.00%-2.99% Other Fixed Rate Senior Debt Due 2015 [Member]    
Debt Instrument [Line Items]    
Stated percentage 2.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A2.002.99OtherFixedRateSeniorDebtDue2015Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		  
Minimum [Member] | Other Fixed Rate Senior Debt [Member] | 3.00%-3.99% Other Fixed Rate Senior Debt Due 2015-2016 [Member]    
Debt Instrument [Line Items]    
Stated percentage 3.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A3.003.99OtherFixedRateSeniorDebtDue2016Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		  
Debt Instrument, Maturity Year 2015  
Minimum [Member] | Other Fixed Rate Senior Debt [Member] | 4.00%-4.99% Other Fixed Rate Senior Debt Due 2015-2018 [Member]    
Debt Instrument [Line Items]    
Stated percentage 4.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A4.004.99OtherFixedRateSeniorDebtDue2018Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		  
Debt Instrument, Maturity Year 2015  
Minimum [Member] | Other Fixed Rate Senior Debt [Member] | 5.00%-5.49% Other Fixed Rate Senior Debt Due 2015-2021 [Member]    
Debt Instrument [Line Items]    
Stated percentage 5.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A5.005.49OtherFixedRateSeniorDebtDue20152021Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		  
Debt Instrument, Maturity Year 2015  
Minimum [Member] | Other Fixed Rate Senior Debt [Member] | 5.50%-5.99% Other Fixed Rate Senior Debt Due 2015-2018 [Member]    
Debt Instrument [Line Items]    
Stated percentage 5.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A5.505.99OtherFixedRateSeniorDebtDue20152018Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		  
Debt Instrument, Maturity Year 2015  
Minimum [Member] | Other Fixed Rate Senior Debt [Member] | 6.00%-6.49% Other Fixed Rate Senior Debt Due 2015-2017 [Member]    
Debt Instrument [Line Items]    
Stated percentage 6.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A6.006.49OtherFixedRateSeniorDebtDue2017Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		  
Debt Instrument, Maturity Year 2015  
Minimum [Member] | Other Fixed Rate Senior Debt [Member] | 7.00%-7.49% Other Fixed Rate Senior Debt Due 2023-2032 [Member]    
Debt Instrument [Line Items]    
Stated percentage 7.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A7.007.49OtherFixedRateSeniorDebtDue2032Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		  
Debt Instrument, Maturity Year 2023  
Minimum [Member] | Other Fixed Rate Senior Debt [Member] | 7.50%-7.99 Other Fixed Rate Senior Debt Due 2019-2032 [Member]    
Debt Instrument [Line Items]    
Stated percentage 7.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A7.507.99OtherFixedRateSeniorDebtDue2032Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		  
Debt Instrument, Maturity Year 2019  
Minimum [Member] | Variable Interest Rate Debt [Member] | .32%-2.67% Secured Financings Due 2015-2018 [Member]    
Debt Instrument [Line Items]    
Stated percentage 0.32%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A322.67SecuredFinancingsDue2018Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_VariableInterestRateDebtMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		  
Debt Instrument, Maturity Year 2015  
Minimum [Member] | Variable Interest Rate Debt [Member] | Other Variable Interest Rate Senior Debt - .49% to 3.08%; due 2015 to 2016 [Member]    
Debt Instrument [Line Items]    
Stated percentage 0.49%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hsbcfc_OtherVariableInterestRateSeniorDebt.49to3.08due2016Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_VariableInterestRateDebtMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		  
Debt Instrument, Maturity Year 2015  
Maximum [Member] | Secured Debt [Member] | 5.00%-5.99% Fixed Rate Senior Debt Due 2015 [Member]    
Debt Instrument [Line Items]    
Stated percentage 5.99%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A5.005.99FixedRateSeniorDebtDue2015Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		  
Debt Instrument, Maturity Year 2015  
Maximum [Member] | Other Fixed Rate Senior Debt [Member] | 1.00%-1.99% Other Fixed Rate Senior Debt [Member]    
Debt Instrument [Line Items]    
Stated percentage 1.99%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A1.001.99OtherFixedRateSeniorDebtMember
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		  
Maximum [Member] | Other Fixed Rate Senior Debt [Member] | 2.00%-2.99% Other Fixed Rate Senior Debt Due 2015 [Member]    
Debt Instrument [Line Items]    
Stated percentage 2.99%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A2.002.99OtherFixedRateSeniorDebtDue2015Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		  
Debt Instrument, Maturity Year 2015  
Maximum [Member] | Other Fixed Rate Senior Debt [Member] | 3.00%-3.99% Other Fixed Rate Senior Debt Due 2015-2016 [Member]    
Debt Instrument [Line Items]    
Stated percentage 3.99%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A3.003.99OtherFixedRateSeniorDebtDue2016Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		  
Debt Instrument, Maturity Year 2016  
Maximum [Member] | Other Fixed Rate Senior Debt [Member] | 4.00%-4.99% Other Fixed Rate Senior Debt Due 2015-2018 [Member]    
Debt Instrument [Line Items]    
Stated percentage 4.99%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A4.004.99OtherFixedRateSeniorDebtDue2018Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		  
Debt Instrument, Maturity Year 2018  
Maximum [Member] | Other Fixed Rate Senior Debt [Member] | 5.00%-5.49% Other Fixed Rate Senior Debt Due 2015-2021 [Member]    
Debt Instrument [Line Items]    
Stated percentage 5.49%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A5.005.49OtherFixedRateSeniorDebtDue20152021Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		  
Debt Instrument, Maturity Year 2021  
Maximum [Member] | Other Fixed Rate Senior Debt [Member] | 5.50%-5.99% Other Fixed Rate Senior Debt Due 2015-2018 [Member]    
Debt Instrument [Line Items]    
Stated percentage 5.99%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A5.505.99OtherFixedRateSeniorDebtDue20152018Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		  
Debt Instrument, Maturity Year 2018  
Maximum [Member] | Other Fixed Rate Senior Debt [Member] | 6.00%-6.49% Other Fixed Rate Senior Debt Due 2015-2017 [Member]    
Debt Instrument [Line Items]    
Stated percentage 6.49%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A6.006.49OtherFixedRateSeniorDebtDue2017Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		  
Debt Instrument, Maturity Year 2017  
Maximum [Member] | Other Fixed Rate Senior Debt [Member] | 7.00%-7.49% Other Fixed Rate Senior Debt Due 2023-2032 [Member]    
Debt Instrument [Line Items]    
Stated percentage 7.49%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A7.007.49OtherFixedRateSeniorDebtDue2032Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		  
Debt Instrument, Maturity Year 2032  
Maximum [Member] | Other Fixed Rate Senior Debt [Member] | 7.50%-7.99 Other Fixed Rate Senior Debt Due 2019-2032 [Member]    
Debt Instrument [Line Items]    
Stated percentage 7.99%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A7.507.99OtherFixedRateSeniorDebtDue2032Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_OtherFixedRateSeniorDebtMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		  
Debt Instrument, Maturity Year 2032  
Maximum [Member] | Variable Interest Rate Debt [Member] | .32%-2.67% Secured Financings Due 2015-2018 [Member]    
Debt Instrument [Line Items]    
Stated percentage 2.67%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hsbcfc_A322.67SecuredFinancingsDue2018Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_VariableInterestRateDebtMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		  
Debt Instrument, Maturity Year 2018  
Maximum [Member] | Variable Interest Rate Debt [Member] | Other Variable Interest Rate Senior Debt - .49% to 3.08%; due 2015 to 2016 [Member]    
Debt Instrument [Line Items]    
Stated percentage 3.08%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= hsbcfc_OtherVariableInterestRateSeniorDebt.49to3.08due2016Member
/ us-gaap_LongtermDebtTypeAxis
= hsbcfc_VariableInterestRateDebtMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		  
Debt Instrument, Maturity Year 2016