Receivables Receivables - Contractual Maturities (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Receivables, Contractual Obligations
Total	$ 575	[1]	$ 1,523	[1]
First Lien
Receivables, Contractual Obligations
Total	496		1,231
Second Mortgage [Member]
Receivables, Contractual Obligations
Total	51		145
Real estate secured [Member]
Receivables, Contractual Obligations
Total	547		1,376
Personal non-credit card [Member]
Receivables, Contractual Obligations
Total	$ 28		$ 147

[1] The following summarizes the actions taken during the three months ended March 31, 2013 and 2012 which resulted in the above receivables being classified as a TDR Loan.