Fair Value Measurements - Additional Information (Detail)	3 Months Ended	12 Months Ended
Mar. 31, 2015	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Weighted average collateral severity rate	18.00%	18.00%
Minimum period to update carrying values for real estate owned properties	45 days

Minimum period to reflect observable local market data, including local area sales data.

No definition available.

Name:	hsbcfc_MinimumPeriodToReflectObservableLocalMarketDataIncludingLocalAreaSalesData
Namespace Prefix:	hsbcfc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration