Other Income, Net Of Losses (Other Income, Net Of Losses) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Other Nonoperating Income (Expense) [Abstract]
Fees and Commissions, Mortgage Banking	$ 113	$ 44	$ 237	$ 88
Fees and Commissions, Other	32	24	63	57
Other Securitization Income Loss	22	123	23	151
Income (Loss) from Equity Method Investments	18	20	47	42
Remarketing Fees	17	31	37	68
Change in other income due to fair value option elections	(5)	(22)	(19)	(39)
Unrealized Gain (Loss) on Derivatives	(44)	(65)	(33)	(79)
Other Nonoperating Income	73	84	148	155
Other Income	$ 226	$ 239	$ 503	$ 443