Receivables - Aging Analysis of Past Due Loans (Parenthetical) (Detail) (USD $)	12 Months Ended
Dec. 31, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
Secured Real Estate Platform, Definition of Qualifying Payment, Threshhold of Amount Within Required Payment	$ 10
Secured Real Estate Platform, Definition of Qualifying Payment, Threshhold of Percent Within Required Payment	0.5

Secured Real Estate Platform, Definition of Qualifying Payment, Threshhold of Amount Within Required Payment

No definition available.

Name:	hsbcfc_SecuredRealEstatePlatformDefinitionOfQualifyingPaymentThreshholdOfAmountWithinRequiredPayment
Namespace Prefix:	hsbcfc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration