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]	AOCI Attributable to Parent [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Shares, Outstanding					509,000
Total shareholders' equity at Dec. 31, 2015		$ 23,437		$ 1,225	$ 550	$ 9,094		$ 14,686	$ (1,658)		$ (460)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect of credit risk adjustment	[2]	0						5			(5)	[3]
Net Income (Loss) Attributable to Parent		939	[4]					939
Other Comprehensive Income (Loss), Net of Tax		698									698
Noncontrolling Interest, Period Increase (Decrease)		(5)							(5)
Dividends, Common Stock, Cash		(241)						(241)
Dividends, Preferred Stock, Cash	[5]	(33)						(33)
Treasury Stock, Shares, Acquired					(9,000)
Treasury Stock, Value, Acquired, Cost Method		(326)							(326)
Payments for Repurchase of Warrants		(24)				(24)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period					0
Stock Issued During Period, Value, Stock Options Exercised		11	[6]			22	[6]		33
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures					1,000
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures		6	[6]			(45)	[6]	(3)	54
Adjustments to Additional Paid in Capital, Share-based Compensation, Restricted Stock Unit or Restricted Stock Award, Requisite Service Period Recognition		2							2
Total shareholders' equity at Jun. 30, 2016		$ 24,464		1,225	$ 550	9,003		15,353	(1,900)		233
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Shares, Outstanding					501,000
Common Stock, Shares, Outstanding		491,188	[7]		491,000
Total shareholders' equity at Dec. 31, 2016		$ 23,618		1,225	$ 550	9,010		16,000	(2,346)		(821)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss) Attributable to Parent		995						995
Other Comprehensive Income (Loss), Net of Tax		44									44
Dividends, Common Stock, Cash		(253)						(253)
Dividends, Preferred Stock, Cash	[5]	(39)						(39)
Stock Issued During Period, Value, New Issues		(743)		(750)		(7)
Treasury Stock, Shares, Acquired					(11,000)
Treasury Stock, Value, Acquired, Cost Method		(654)							(654)
Payments for Repurchase of Warrants		0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period					1,000
Stock Issued During Period, Value, Stock Options Exercised		12				13			25
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures					1,000
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures		11				(17)		(2)	30
Total shareholders' equity at Jun. 30, 2017		$ 24,477		$ 1,975	$ 550	$ 8,973		$ 16,701	$ (2,945)		$ (777)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Shares, Outstanding		481,644	[7]		482,000

[1] At June 30, 2017, includes ($3,048) million for treasury stock, $0 million for the compensation element of restricted stock, and $103 million for noncontrolling interest.At June 30, 2016, includes ($2,003) million for treasury stock, $0 million for the compensation element of restricted stock, and $103 million for noncontrolling interest.

[2] Related to the Company's early adoption of the ASU 2016-01 provision related to changes in instrument-specific credit risk, beginning January 1, 2016. See Note 1, "Significant Accounting Policies," and Note 18, "Accumulated Other Comprehensive (Loss)/Income," for additional information.

[3] Related to the Company's early adoption of the ASU 2016-01 provision related to changes in instrument-specific credit risk. See Note 1, "Significant Accounting Policies," for additional information.

[4] Beginning in the second quarter of 2017, the Company realigned its business segment structure from three segments to two segments. Specifically, the Company retained the previous composition of the Wholesale Banking segment and changed the basis of presentation of the Consumer Banking and Private Wealth Management segment and Mortgage Banking segment such that those segments were combined into a single Consumer segment. Accordingly, business segment information presented for the six months ended June 30, 2016 has been revised to conform to the new business segment structure and updated internal funds transfer pricing methodology for consistent presentation.

[5] For the six months ended June 30, 2017, 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, $2,813 per share for Perpetual Preferred Stock Series F, and $828 per share for Perpetual Preferred Stock Series G.For the six months ended June 30, 2016, dividends were $2,033 per share for both Perpetual Preferred Stock Series A and B, $2,938 per share for Perpetual Preferred Stock Series E, and $2,813 per share for Perpetual Preferred Stock Series F.

[6] Includes a ($4) million net reclassification of excess tax benefits from additional paid-in capital to provision for income taxes, related to the Company's early adoption of ASU 2016-09.

[7] Includes restricted shares of 9 thousand and 11 thousand at June 30, 2017 and December 31, 2016, respectively.