2.4.0.82408405 - Disclosure - Receivables - Nonaccrual Receivables (Detail)truefalseIn Millions, unless otherwise specifiedfalse1false USDfalsefalse$I2013Q2http://www.sec.gov/CIK0000354964instant2013-06-30T00:00:000001-01-01T00:00:00usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2false USDfalsefalse$I2012Q4http://www.sec.gov/CIK0000354964instant2012-12-31T00:00:000001-01-01T00:00:00usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1true 4hsbcfc_FinancialReceivableOnNonaccrualStatusAbstracthsbcfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Nonaccrual receivables:2false 5us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatusus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse53050000005305USD$falsetruefalse2truefalsefalse51930000005193USD$falsetruefalsexbrli:monetaryItemTypemonetaryRecorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5111-111524 false2Total nonaccrual receivables3false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3false USDtruefalse$I2013Q2_us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis_hsbcfc_RealEstateSecuredMemberhttp://www.sec.gov/CIK0000354964instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseReal Estate Secured [Member]us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxisxbrldihttp://xbrl.org/2006/xbrldihsbcfc_RealEstateSecuredMemberus-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Real Estate 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USDtruefalse$I2013Q2_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_hsbcfc_RealEstateLoanReceivableMemberhttp://www.sec.gov/CIK0000354964instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseReal estate secured [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldihsbcfc_RealEstateLoanReceivableMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Real estate secured [Member]7true 4hsbcfc_FinancialReceivableOnNonaccrualStatusAbstracthsbcfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Nonaccrual receivables:8false 5us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatusus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse15790000001579[1]USD$falsefalsefalse2truefalsefalse30320000003032[1]USD$falsefalsefalsexbrli:monetaryItemTypemonetaryRecorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5111-111524 false2Total nonaccrual receivables9false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse7false USDtruefalse$I2013Q2_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_hsbcfc_HeldForSaleMemberhttp://www.sec.gov/CIK0000354964instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseNonaccrual receivables held for sale [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldihsbcfc_HeldForSaleMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Nonaccrual receivables held for sale [Member]10true 4hsbcfc_FinancialReceivableOnNonaccrualStatusAbstracthsbcfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Nonaccrual receivables:11false 5us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatusus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse37260000003726USD$falsetruefalse2truefalsefalse21610000002161USD$falsetruefalsexbrli:monetaryItemTypemonetaryRecorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5111-111524 false2Total nonaccrual receivables1At June 30, 2013 and December 31, 2012, nonaccrual real estate secured receivables held for investment include $642 million and $1.7 billion, respectively, of receivables that are carried at the lower of amortized cost or fair value of the collateral less cost to sell.falseReceivables - Nonaccrual Receivables (Detail) (USD $)MillionsUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.us.hsbc.com/role/ReceivablesNonaccrualReceivablesDetail211