Consolidated Income Statement - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Interest Income
Loans	$ 8,927	$ 10,525	$ 9,580
Investment securities	2,041	2,426	2,261
Other	339	811	741
Total interest income	11,307	13,762	12,582
Interest Expense
Deposits	643	1,986	1,229
Borrowed funds	718	1,811	1,632
Total interest expense	1,361	3,797	2,861
Net interest income	9,946	9,965	9,721
Noninterest Income
Total noninterest income	6,955	6,874	6,469
Total revenue	16,901	16,839	16,190
Provision For Credit Losses	3,175	773	408
Noninterest Expense
Personnel	5,673	5,647	5,471
Occupancy	826	834	818
Equipment	1,176	1,210	1,103
Marketing	236	301	285
Other	2,386	2,582	2,619
Total noninterest expense	10,297	10,574	10,296
Income from continuing operations before income taxes and noncontrolling interests	3,429	5,492	5,486
Income taxes from continuing operations	426	901	928
Net income from continuing operations	3,003	4,591	4,558
Income from discontinued operations before taxes	5,777	988	942
Income taxes from discontinued operations	1,222	161	154
Net income from discontinued operations	4,555	827	788
Net income	7,558	5,418	5,346
Less: Net income attributable to noncontrolling interests	41	49	45
Preferred stock dividends	229	236	236
Preferred stock discount accretion and redemptions	4	4	4
Net income attributable to common shareholders	$ 7,284	$ 5,129	$ 5,061
Total basic earnings
Basic earnings from continuing operations (dollars per share)	$ 6.37	$ 9.59	$ 9.11
Basic earnings from discontinued operations (dollars per share)	10.62	1.84	1.68
Basic earnings per common share (dollars per share)	16.99	11.43	10.79
Total diluted earnings
Diluted earnings from continuing operations (dollars per share)	6.36	9.57	9.06
Diluted earnings from discontinued operations (dollars per share)	10.60	1.82	1.65
Diluted earnings per common share (dollars per share)	$ 16.96	$ 11.39	$ 10.71
Average Common Shares Outstanding
Basic (shares)	427	447	467
Diluted (shares)	427	448	470
Asset management
Noninterest Income
Total noninterest income	$ 836	$ 862	$ 883
Consumer services
Noninterest Income
Total noninterest income	1,484	1,555	1,502
Corporate services
Noninterest Income
Total noninterest income	2,167	1,914	1,849
Residential mortgage
Noninterest Income
Total noninterest income	604	368	316
Service charges on deposits
Noninterest Income
Total noninterest income	500	702	714
Other
Noninterest Income
Total noninterest income	$ 1,364	$ 1,473	$ 1,205