Receivables (Details 8) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Contractual delinquency and delinquency ratio
Dollars of Delinquency	$ 6,223	$ 8,591
Delinquency Ratio	14.92%	17.93%
Dollars of Delinquency, prior to transfer to Held for Sale	7,997
Delinquency Ratio, prior to transfer to Held for Sale	17.95%
First lien [Member]
Contractual delinquency and delinquency ratio
Dollars of Delinquency	5,778	7,605
Delinquency Ratio	16.88%	19.89%
Dollars of Delinquency, prior to transfer to Held for Sale	7,314
Delinquency Ratio, prior to transfer to Held for Sale	20.37%
Second lien [Member]
Contractual delinquency and delinquency ratio
Dollars of Delinquency	371	500
Delinquency Ratio	9.24%	11.16%
Dollars of Delinquency, prior to transfer to Held for Sale	371
Delinquency Ratio, prior to transfer to Held for Sale	9.24%
Total real estate secured [Member]
Contractual delinquency and delinquency ratio
Dollars of Delinquency	6,149	8,105
Delinquency Ratio	16.08%	18.98%
Dollars of Delinquency, prior to transfer to Held for Sale	7,685
Delinquency Ratio, prior to transfer to Held for Sale	19.25%
Personal non-credit card [Member]
Contractual delinquency and delinquency ratio
Dollars of Delinquency	74	486
Delinquency Ratio	2.12%	9.35%
Dollars of Delinquency, prior to transfer to Held for Sale	$ 312
Delinquency Ratio, prior to transfer to Held for Sale	6.73%