2.4.0.82408403 - Disclosure - Receivables - Additional Information (Detail)truefalsefalse1false 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$1true 1hsbcfc_DisclosureReceivablesAdditionalInformationAbstracthsbcfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Disclosure Receivables Additional Information [Abstract]2false 2hsbcfc_DeferredOriginationFeeshsbcfc_falsecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse205000000205000000USD$falsetruefalse2truefalsefalse221000000221000000USD$falsetruefalsexbrli:monetaryItemTypemonetaryDeferred origination fees.No definition available.false2Deferred origination fees3false 2hsbcfc_NetUnamortizedPremiumOrDiscounthsbcfc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse114000000114000000falsefalsefalse2truefalsefalse127000000127000000falsefalsefalsexbrli:monetaryItemTypemonetaryNet unamortized premium or discount.No definition available.false2Net unamortized premium on our receivables4false 2hsbcfc_LongTermDebtCollateralizedByReceivablehsbcfc_falsecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse26000000002600000000falsefalsefalse2truefalsefalse29000000002900000000falsefalsefalsexbrli:monetaryItemTypemonetaryLong term debt collateralized by receivable.No definition available.false2Secured financing5false 2us-gaap_LoansPledgedAsCollateralus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse46000000004600000000USD$falsetruefalse2truefalsefalse49000000004900000000USD$falsetruefalsexbrli:monetaryItemTypemonetaryCarrying amount as of the balance sheet date of loans that have been pledged as collateral for borrowings. If the secured party has the right by contract or custom to sell or re-pledge the collateral, then the debtor reclassifies that asset and report that asset in its statement of financial position separately from other assets not so encumbered.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5086-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6467456&loc=d3e113888-111728 false2Receivables, collateralizing long-term debtfalseReceivables - Additional Information (Detail) (USD $)NoRoundingUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.us.hsbc.com/role/ReceivablesAdditionalInformationDetail25