Consolidated Statements of Shareholders' Equity (USD $) In Millions, except Share data, unless otherwise specified		Total USD ($)		Preferred Stock [Member] USD ($)	Common Stock [Member] USD ($)	Additional Paid-in Capital [Member] USD ($)	Retained Earnings [Member] USD ($)	Treasury Stock and Other USD ($)		Accumulated Other Comprehensive Income (Loss) [Member] USD ($)		Series F Preferred Stock [Member] Preferred Stock [Member] USD ($)	Series F Preferred Stock [Member] Additional Paid-in Capital [Member] USD ($)	Common Stock [Member]	Series B Preferred Stock [Member] USD ($)	Series B Preferred Stock [Member] Preferred Stock [Member] USD ($)	Series B Preferred Stock [Member] Additional Paid-in Capital [Member] USD ($)	Ridgeworth Capital Management [Member] USD ($)	Ridgeworth Capital Management [Member] Additional Paid-in Capital [Member] USD ($)	Ridgeworth Capital Management [Member] Treasury Stock and Other USD ($)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, beginning of period at Dec. 31, 2011		$ 20,066		$ 275	$ 550	$ 9,306	$ 8,978	$ (792)	[1]	$ 1,749	[2]
Common Stock, Shares, Outstanding, beginning of period at Dec. 31, 2011					537,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss) Attributable to Parent		1,958					1,958
Other Comprehensive Income (Loss), Net of Tax		(1,440)								(1,440)	[2]
Noncontrolling Interest, Period Increase (Decrease)		7						7	[1]
Dividends, Common Stock, Cash		(107)					(107)
Dividends, Preferred Stock, Cash	[3]	(12)					(12)
Stock Issued During Period, Value, New Issues															438	450	(12)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period														1,000,000
Stock Issued During Period, Value, Stock Options Exercised		21				(44)		65	[1]
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures														1,000,000
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures		6				(63)		69	[1]
Adjustments to Additional Paid in Capital, Share-based Compensation, Restricted Stock Unit or Restricted Stock Award, Requisite Service Period Recognition		30						30	[1]
Stock Issued During Period, Shares, Employee Benefit Plan														0
Stock Issued During Period, Value, Employee Benefit Plan		18				(13)		31	[1]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, end of period at Dec. 31, 2012		20,985		725	550	9,174	10,817	(590)	[1]	309	[2]
Common Stock, Shares, Outstanding, end of period at Dec. 31, 2012					539,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss) Attributable to Parent		1,344					1,344
Other Comprehensive Income (Loss), Net of Tax		(598)								(598)	[2]
Noncontrolling Interest, Period Increase (Decrease)		5						5	[1]
Dividends, Common Stock, Cash		(188)					(188)
Dividends, Preferred Stock, Cash	[3]	(37)					(37)
Treasury Stock, Shares, Acquired														(5,000,000)
Treasury Stock, Value, Acquired, Cost Method		(150)						(150)	[1]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period														1,000,000
Stock Issued During Period, Value, Stock Options Exercised		16				(27)		43	[1]
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures														1,000,000
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures		4				(35)		39	[1]
Adjustments to Additional Paid in Capital, Share-based Compensation, Restricted Stock Unit or Restricted Stock Award, Requisite Service Period Recognition		32						32	[1]
Stock Issued During Period, Shares, Employee Benefit Plan														0
Stock Issued During Period, Value, Employee Benefit Plan		9				3		6	[1]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, end of period at Dec. 31, 2013		21,422		725	550	9,115	11,936	(615)	[1]	(289)	[2]
Common Stock, Shares, Outstanding, end of period at Dec. 31, 2013		536,097,000	[4]		536,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss) Attributable to Parent		1,774					1,774
Other Comprehensive Income (Loss), Net of Tax		167								167	[2]
Noncontrolling Interest, Period Increase (Decrease)		5						5	[1]
Dividends, Common Stock, Cash		(371)					(371)
Dividends, Preferred Stock, Cash	[3]	(42)					(42)
Stock Issued During Period, Value, New Issues												500	(4)
Treasury Stock, Shares, Acquired														(12,000,000)
Treasury Stock, Value, Acquired, Cost Method		(458)						(458)	[1]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period														1,000,000
Stock Issued During Period, Value, Stock Options Exercised		4				(16)		20	[1]
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures														0
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures		17				18	(2)	1	[1]
Adjustments to Additional Paid in Capital, Share-based Compensation, Restricted Stock Unit or Restricted Stock Award, Requisite Service Period Recognition		27						27	[1]
Stock Issued During Period, Shares, Employee Benefit Plan														0
Stock Issued During Period, Value, Employee Benefit Plan		3				(1)		4	[1]									(39)	(23)	(16)	[1]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, end of period at Dec. 31, 2014		$ 23,005		$ 1,225	$ 550	$ 9,089	$ 13,295	$ (1,032)	[1]	$ (122)	[2]
Common Stock, Shares, Outstanding, end of period at Dec. 31, 2014		524,540,000	[4]		525,000,000

[1] At December 31, 2014, includes ($1,119) million for treasury stock, ($21) million for compensation element of restricted stock, and $108 million for noncontrolling interest.At December 31, 2013, includes ($684) million for treasury stock, ($50) million for compensation element of restricted stock, and $119 million for noncontrolling interest. At December 31, 2012, includes ($656) million for treasury stock, ($48) million for compensation element of restricted stock, and $114 million for noncontrolling interest.

[2] At December 31, 2014, includes $298 million in unrealized net gains on AFS securities, $97 million in unrealized net gains on derivative financial instruments, and ($517) million related to employee benefit plans. At December 31, 2013, includes ($77) million in unrealized net gains on AFS securities, $279 million in unrealized net gains on derivative financial instruments, and ($491) million related to employee benefit plans. At December 31, 2012, includes $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.

[3] For the year ended December 31, 2014, dividends were $4,056 per share for both Perpetual Preferred Stock Series A and B, and $5,875 per share for Perpetual Preferred Stock Series E.For the year ended December 31, 2013, dividends were $4,056 per share for both Perpetual Preferred Stock Series A and B, and $5,793 per share for Perpetual Preferred Stock Series E.For the year ended December 31, 2012, dividends were $4,052 per share for both Perpetual Preferred Stock Series A and B.

[4] Includes restricted shares of 2,930 thousand and 3,984 thousand at December 31, 2014 and December 31, 2013, respectively.