Other Liabilities (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012	Dec. 31, 2011
Other Liabilities.
Loan repurchase and indemnification liability	$ 141	$ 140
Derivatives	71	39
Pension and other post employment benefits liability	15	15
Lease syndication liability	13	16
Liability for reinsurance losses		33	43	84
Other	34	36
Total	$ 274	$ 279