Accounting Policies (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2013
Accounting Policies [Abstract]
CurrentFederalIncomeTaxExpense(Benefit)UnderTaxPayerReliefAct2012	$ (64)

The component of total income tax expense for the period comprised of the increase (decrease) during the period in the entity's domestic current tax assets and liabilities attributable to continuing operations as determined by applying the provisions of the American Taxpayer Relief Act of 2012.

No definition available.

Name:	fmcc_Currentfederalincometaxexpensebenefitundertaxpayerreliefact2012
Namespace Prefix:	fmcc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration