Consolidated Statements of Shareholders' Equity (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 20,985		$ 20,066		$ 23,130		$ 22,531
Common Stock, Shares, Outstanding	538,959,000		536,967,000
Net income	1,958		647		189
Other Comprehensive Income (Loss), Net of Tax	(1,440)		133		546
Noncontrolling Interest, Period Increase (Decrease)	7		(22)		4
Dividends, Common Stock, Cash	(107)		(64)		(20)
Dividends, Preferred Stock, Cash	(12)		(7)		(7)
Dividends Us Treasury Preferred Stock Dividends			(60)		(242)
Preferred Stock, Accretion of Redemption Discount			0		0
Adjustments to Additional Paid in Capital, Other			(11)
Stock Issued During Period, Value, New Issues			1,000
Adjustments to Additional Paid in Capital, Share-based Compensation, Stock Options, Requisite Service Period Recognition					24
Stock Issued During Period, Value, Stock Options Exercised	21		12
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	6		(8)		(31)
Adjustments to Additional Paid in Capital, Share-based Compensation, Restricted Stock Unit or Restricted Stock Award, Requisite Service Period Recognition	30		32		42
Stock Issued During Period, Value, Employee Benefit Plan	18		14		12
FAS 159 [Member]
Cumulative Effect of Prospective Application of New Accounting Principle					89
Cumulative-Effect Adjustment, Consolidation of Variable Interest Entity [Member]
Cumulative Effect of Prospective Application of New Accounting Principle					(7)
Preferred Stock [Member]
Stock Issued During Period, Value, New Issues	438		103
Series C and Series D Preferred Stock [Member]
Preferred Stock, Accretion of Redemption Discount			(74)
Stock Redeemed or Called During Period, Value			(4,850)
Common Stock [Member]
Stock Issued During Period, Value, New Issues			1,017
Preferred Stock [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	725		275		4,942		4,917
Preferred Stock [Member] | Preferred Stock [Member]
Stock Issued During Period, Value, New Issues	450		103
Preferred Stock [Member] | Series C and Series D Preferred Stock [Member]
Preferred Stock, Accretion of Redemption Discount			6		25
Stock Redeemed or Called During Period, Value			(4,776)
Common Stock [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	550		550		515		515
Common Stock, Shares, Outstanding	539,000,000		537,000,000		500,000,000		499,000,000
Common Stock [Member] | Common Stock [Member]
Stock Issued During Period, Shares, New Issues			35,000,000
Stock Issued During Period, Value, New Issues			35
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	1,000,000
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures	1,000,000		1,000,000		1,000,000
Stock Issued During Period, Shares, Employee Benefit Plan			1,000,000
Additional Paid-in Capital [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	9,174		9,306		8,403		8,521
Adjustments to Additional Paid in Capital, Other			(11)
Adjustments to Additional Paid in Capital, Share-based Compensation, Stock Options, Requisite Service Period Recognition					24
Stock Issued During Period, Value, Stock Options Exercised	(44)		11
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	(63)		(58)		(97)
Stock Issued During Period, Value, Employee Benefit Plan	(13)		(21)		(45)
Additional Paid-in Capital [Member] | Preferred Stock [Member]
Stock Issued During Period, Value, New Issues	(12)
Additional Paid-in Capital [Member] | Common Stock [Member]
Stock Issued During Period, Value, New Issues			982
Retained Earnings [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	10,817		8,978		8,542		8,563
Net income	1,958		647		189
Dividends, Common Stock, Cash	(107)		(64)		(20)
Dividends, Preferred Stock, Cash	(12)		(7)		(7)
Dividends Us Treasury Preferred Stock Dividends			(60)		(242)
Stock Issued During Period, Value, Employee Benefit Plan					2
Retained Earnings [Member] | FAS 159 [Member]
Cumulative Effect of Prospective Application of New Accounting Principle					89
Retained Earnings [Member] | Cumulative-Effect Adjustment, Consolidation of Variable Interest Entity [Member]
Cumulative Effect of Prospective Application of New Accounting Principle					(7)
Retained Earnings [Member] | Series C and Series D Preferred Stock [Member]
Preferred Stock, Accretion of Redemption Discount			(6)		(25)
Stock Redeemed or Called During Period, Value	0		(74)		0
Treasury Stock and Other
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(590)	[1]	(792)	[1]	(888)	[1]	(1,055)	[1]
Noncontrolling Interest, Period Increase (Decrease)	7	[1]	(22)	[1]	4	[1]
Stock Issued During Period, Value, Stock Options Exercised	65	[1]	1	[1]
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	69	[1]	50	[1]	66	[1]
Adjustments to Additional Paid in Capital, Share-based Compensation, Restricted Stock Unit or Restricted Stock Award, Requisite Service Period Recognition	30	[1]	32	[1]	42	[1]
Stock Issued During Period, Value, Employee Benefit Plan	31	[1]	35	[1]	55	[1]
Accumulated Other Comprehensive Income (Loss) [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	309	[2]	1,749	[2]	1,616	[2]	1,070	[2]
Other Comprehensive Income (Loss), Net of Tax	$ (1,440)	[2]	$ 133	[2]	$ 546	[2]

[1] At December 31, 2012, includes ($656) million for treasury stock, ($48) million for compensation element of restricted stock, and $114 million for noncontrolling interest. At December 31, 2011, includes ($851) million for treasury stock, ($48) million for compensation element of restricted stock, and $107 million for noncontrolling interest. At December 31, 2010, includes ($974) million for treasury stock, ($43) million for compensation element of restricted stock, and $129 million for noncontrolling interest.

[2] Components of AOCI at December 31, 2012, included $520 million in unrealized net gains on AFS securities, $532 million in unrealized net gains on derivative financial instruments, and ($743) million related to employee benefit plans. At December 31, 2011, components included $1,863 million in unrealized net gains on AFS securities, $569 million in unrealized net gains on derivative financial instruments, and ($683) million related to employee benefit plans. At December 31, 2010, components included $1,526 million in unrealized net gains on AFS securities, $532 million in unrealized net gains on derivative financial instruments, and ($442) million related to employee benefit plans.