Consolidated Statements of Shareholders' Equity - USD ($) $ 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					509,000,000
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		1,878	[4],[5]					1,878
Other Comprehensive Income (Loss), Net of Tax		(356)									(356)
Noncontrolling Interest, Period Increase (Decrease)		(5)							(5)
Dividends, Common Stock, Cash		(498)						(498)
Dividends, Preferred Stock, Cash	[6]	(66)						(66)
Treasury Stock, Shares, Acquired					(20,000,000)
Treasury Stock, Value, Acquired, Cost Method		(806)							(806)
Payments for Repurchase of Warrants		(24)				24
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period					1,000,000
Stock Issued During Period, Value, Stock Options Exercised		25	[7]			40	[7]		65
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		31	[7]			(20)	[7]	(5)	56
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 Dec. 31, 2016		23,618		1,225	$ 550	9,010		16,000	(2,346)		(821)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Shares, Outstanding					491,000,000
Net Income (Loss) Attributable to Parent		2,273	[8],[9]					2,273
Other Comprehensive Income (Loss), Net of Tax		1									1
Dividends, Common Stock, Cash		(634)						(634)
Dividends, Preferred Stock, Cash	[6]	(94)						(94)
Stock Issued During Period, Value, New Issues		1,239		1,250		(11)
Treasury Stock, Shares, Acquired					(22,000,000)
Treasury Stock, Value, Acquired, Cost Method		(1,314)							(1,314)
Payments for Repurchase of Warrants		0
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				(15)			36
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		44				16		(5)	33
Total shareholders' equity at Dec. 31, 2017		$ 25,154		2,475	$ 550	9,000		17,540	(3,591)		(820)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Shares, Outstanding		470,931,000	[10]		471,000,000
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Income	[11]	$ (5)						149			(154)	[12]
Net Income (Loss) Attributable to Parent		2,775						2,775
Other Comprehensive Income (Loss), Net of Tax		(446)									(446)
Dividends, Common Stock, Cash		(826)						(826)
Dividends, Preferred Stock, Cash	[6]	(107)						(107)
Stock Redeemed or Called During Period, Value		(450)		(450)
Treasury Stock, Shares, Acquired					(29,000,000)
Treasury Stock, Value, Acquired, Cost Method		(1,910)							(1,910)
Payments for Repurchase of Warrants		$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period		774,704			1,000,000
Stock Issued During Period, Value, Stock Options Exercised		$ 36							36
Stock Issued During Period, Shares, Other					3,000,000
Stock Issued During Period, Value, Other		0			$ 3	(3)
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		58				25		(9)	42
Adjustments to Additional Paid in Capital, Share-based Compensation, Restricted Stock Unit or Restricted Stock Award, Requisite Service Period Recognition		1							1
Total shareholders' equity at Dec. 31, 2018		$ 24,280		$ 2,025	$ 553	$ 9,022		$ 19,522	$ (5,422)		$ (1,420)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Shares, Outstanding		446,888,000	[10]		447,000,000

[1] At December 31, 2018, includes ($5,525) million for treasury stock and $103 million for noncontrolling interest. At December 31, 2017, includes ($3,694) million for treasury stock and $103 million for noncontrolling interest. At December 31, 2016, includes ($2,448) million for treasury stock, ($1) 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 23, “Accumulated Other Comprehensive Loss,” 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 beginning January 1, 2016. See Note 1, "Significant Accounting Policies," for additional information.

[4] During the second quarter of 2018, certain of the Company's business banking clients were transferred from the Wholesale business segment to the Consumer business segment. For all periods prior to the second quarter of 2018, the corresponding financial results have been transferred to the Consumer business segment for comparability purposes.

[5] During the fourth quarter of 2017, the Company sold PAC, the results of which were previously reported within the Wholesale business segment. For all periods prior to January 1, 2018, PAC's financial results, including the gain on sale, have been transferred to Corporate Other for enhanced comparability of the Wholesale business segment excluding PAC.

[6] For the year ended December 31, 2018, dividends were $4,056 per share for both Series A and B Preferred Stock, $1,469 per share for Series E Preferred Stock, $5,625 per share for Series F Preferred Stock, $5,050 per share for Series G Preferred Stock, and $5,566 per share for Series H Preferred Stock. For the year ended December 31, 2017, dividends were $4,056 per share for both Series A and B Preferred Stock, $5,875 per share for Series E Preferred Stock, $5,625 per share for Series F Preferred Stock, $3,128 per share for Series G Preferred Stock, and $669 per share for Series H Preferred Stock. For the year ended December 31, 2016, dividends were $4,067 per share for both Series A and B Preferred Stock, $5,875 per share for Series E Preferred Stock, and $5,625 per share for Series F Preferred Stock.

[7] 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 adoption of ASU 2016-09.

[8] During the second quarter of 2018, certain of the Company's business banking clients were transferred from the Wholesale business segment to the Consumer business segment. For all periods prior to the second quarter of 2018, the corresponding financial results have been transferred to the Consumer business segment for comparability purposes.

[9] During the fourth quarter of 2017, the Company sold PAC, the results of which were previously reported within the Wholesale business segment. For all periods prior to January 1, 2018, PAC's financial results, including the gain on sale, have been transferred to Corporate Other for enhanced comparability of the Wholesale business segment excluding PAC.

[10] Includes restricted shares of 7 thousand and 9 thousand at December?31, 2018 and December?31, 2017, respectively.

[11] Related to the Company’s adoption of ASU 2014-09, ASU 2016-01, ASU 2017-12, and ASU 2018-02 on January 1, 2018. See Note 1, “Significant Accounting Policies,” for additional information.

[12] Related to the Company's early adoption of ASU 2018-02 beginning January 1, 2018. See Note 1, "Significant Accounting Policies," for additional information.