Consolidated Statements of Shareholders' Equity - USD ($) shares in Thousands, $ in Millions		Total		Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock and Other	[1]	Accumulated Other Comprehensive Income (Loss) [Member]	[2]	Common Stock [Member] Common Stock [Member]	Ridgeworth Capital Management [Member]	Ridgeworth Capital Management [Member] Additional Paid-in Capital [Member]	Ridgeworth Capital Management [Member] Treasury Stock and Other	[1]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, beginning of period at Dec. 31, 2013		$ 21,422		$ 725	$ 550	$ 9,115	$ 11,936	$ 615		$ (289)
Common Stock, Shares, Outstanding, beginning of period at Dec. 31, 2013					536,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss) Attributable to Parent		804					804
Other Comprehensive Income (Loss), Net of Tax		230								230
Noncontrolling Interest, Period Increase (Decrease)		4						4
Dividends, Common Stock, Cash		(160)					(160)
Dividends, Preferred Stock, Cash	[3]	(19)					(19)
Treasury Stock, Shares, Acquired												(3,000)
Treasury Stock, Value, Acquired, Cost Method		(133)						(133)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period												0
Stock Issued During Period, Value, Stock Options Exercised		(3)				(13)		10
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures												0
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures		8				6	(1)	3
Adjustments to Additional Paid in Capital, Share-based Compensation, Restricted Stock Unit or Restricted Stock Award, Requisite Service Period Recognition		14						14
Stock Issued During Period, Shares, Employee Benefit Plan												0
Stock Issued During Period, Value, Employee Benefit Plan		3				0		3					$ (39)	$ (23)	$ (16)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, end of period at Jun. 30, 2014		22,131		725	$ 550	9,085	12,560	730		(59)
Common Stock, Shares, Outstanding, end of period at Jun. 30, 2014					533,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, beginning of period at Dec. 31, 2014		$ 23,005		1,225	$ 550	9,089	13,295	1,032		(122)
Common Stock, Shares, Outstanding, beginning of period at Dec. 31, 2014		524,540	[4]		525,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss) Attributable to Parent		$ 912					912
Other Comprehensive Income (Loss), Net of Tax		(172)								(172)
Dividends, Common Stock, Cash		(229)					(229)
Dividends, Preferred Stock, Cash	[3]	(32)					(32)
Treasury Stock, Shares, Acquired												(7,000)
Treasury Stock, Value, Acquired, Cost Method		(290)						(290)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period												0
Stock Issued During Period, Value, Stock Options Exercised		8				(14)		22
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures												0
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures		10				5	(2)	7
Adjustments to Additional Paid in Capital, Share-based Compensation, Restricted Stock Unit or Restricted Stock Award, Requisite Service Period Recognition		9						9
Stock Issued During Period, Shares, Employee Benefit Plan												0
Stock Issued During Period, Value, Employee Benefit Plan		2				0		2
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, end of period at Jun. 30, 2015		$ 23,223		$ 1,225	$ 550	$ 9,080	$ 13,944	$ 1,282		$ (294)
Common Stock, Shares, Outstanding, end of period at Jun. 30, 2015		518,045	[4]		518,000

[1] At June 30, 2015, includes ($1,379) million for treasury stock, ($11) million for the compensation element of restricted stock, and $108 million for noncontrolling interest.At June 30, 2014, includes ($802) million for treasury stock, ($35) million for the compensation element of restricted stock, and $107 million for noncontrolling interest.

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[3] For the six months ended June 30, 2015, dividends were $2,022 per share for both Perpetual Preferred Stock Series A and B, $2,938 per share for Perpetual Preferred Stock Series E, and $3,406 per share for Perpetual Preferred Stock Series F.For the six months ended June 30, 2014, dividends were $2,022 per share for both Perpetual Preferred Stock Series A and B, and $2,938 per share for Perpetual Preferred Stock Series E.

[4] Includes restricted shares of 1,601 thousand and 2,930 thousand at June 30, 2015 and December 31, 2014, respectively.