Consolidated Statements of Shareholders' Equity (USD $) In Millions, except Share data	Total	Preferred Stock	Common Stock	Additional Paid in Capital	Retained Earnings [Member]	Treasury Stock and Other		Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance at Dec. 31, 2010	$ 23,130	$ 4,942	$ 515	$ 8,403	$ 8,542	$ (888)	[1]	$ 1,616	[2]
Common Stock, Shares, Outstanding			537,000,000
Net income (loss)	573				573
Other Comprehensive Income (Loss), Net of Tax	410							410	[2]
Change in noncontrolling interest	(8)					(8)	[1]
Common stock dividends	(37)				(37)
Preferred dividends	(5)				(5)
U.S. Treasury preferred stock dividends	(60)				(60)
Accretion of discount for preferred stock issued to U.S. Treasury	0	(6)			(6)
Repurchase of preferred stock	(4,850)	(4,776)			(74)
Adjustments to Additional Paid in Capital, Warrant Issued	(11)			(11)
Issuance of common stock (in shares)			35,000,000
Issuance of common stock	1,017		35	982
Adjustments to Additional Paid in Capital, Share-based Compensation, Stock Options, Requisite Service Period Recognition	9			9
Restricted stock activity (in shares)			2,000,000
Restricted stock activity	(8)			(57)		49	[1]
Restricted Stock or Unit Expense	25					25	[1]
Stock Issued During Period, Value, Employee Benefit Plan	15			(12)		27	[1]
Ending Balance at Sep. 30, 2011	20,200	172	550	9,314	8,933	(795)	[1]	2,026	[2]
Beginning Balance at Dec. 31, 2011	20,066	275	550	9,306	8,978	(792)	[1]	1,749	[2]
Common Stock, Shares, Outstanding	538,821,000		539,000,000
Net income (loss)	1,602				1,602
Other Comprehensive Income (Loss), Net of Tax	(1,245)							(1,245)	[2]
Change in noncontrolling interest	7					7	[1]
Common stock dividends	(81)				(81)
Preferred dividends	(8)				(8)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period			1,000,000
Stock compensation expense	16			(35)		51	[1]
Restricted stock activity (in shares)			1,000,000
Restricted stock activity	5			(64)		69	[1]
Restricted Stock or Unit Expense	22					22	[1]
Stock Issued During Period, Value, Employee Benefit Plan	15			(12)		27	[1]
Ending Balance at Sep. 30, 2012	$ 20,399	$ 275	$ 550	$ 9,195	$ 10,491	$ (616)	[1]	$ 504	[2]

[1] At September 30, 2012, includes ($673) million for treasury stock, ($57) million for compensation element of restricted stock, and $114 million for noncontrolling interest. At September 30, 2011, includes ($858) million for treasury stock, ($58) million for compensation element of restricted stock, and $121 million for noncontrolling interest.

[2] Components of AOCI at September 30, 2012, included $607 million in unrealized net gains on AFS securities, $603 million in unrealized net gains on derivative financial instruments, and ($706) million related to employee benefit plans. At September 30, 2011, components included $1,820 million in unrealized net gains on AFS securities, $661 million in unrealized net gains on derivative financial instruments, and ($455) million related to employee benefit plans.