Consolidated Statements of Income - USD ($) shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Interest Income
Interest and fees on loans and leases	$ 2,901	$ 3,377	$ 5,903	$ 7,153
Interest on securities	497	444	940	938
Interest on other earning assets	45	67	94	223
Total interest income	3,443	3,888	6,937	8,314
Interest Expense
Interest on deposits	36	201	83	622
Interest on long-term debt	147	211	295	483
Interest on other borrowings	15	28	29	111
Total interest expense	198	440	407	1,216
Net Interest Income	3,245	3,448	6,530	7,098
Provision for credit losses	(434)	844	(386)	1,737
Net Interest Income After Provision for Credit Losses	3,679	2,604	6,916	5,361
Noninterest Income
Noninterest income	2,405	2,423	4,602	4,384
Noninterest Expense
Personnel expense	2,207	2,008	4,349	3,980
Professional fees and outside processing	341	289	691	536
Net occupancy expense	182	243	391	464
Software expense	246	216	456	426
Amortization of intangibles	142	178	286	343
Equipment expense	122	120	235	236
Marketing and customer development	66	56	132	140
Operating lease depreciation	47	77	97	148
Loan-related expense	55	56	109	118
Regulatory costs	31	30	56	59
Merger-related and restructuring charges	297	209	438	316
Loss (gain) on early extinguishment of debt	0	235	(3)	235
Other expense	275	161	384	308
Total noninterest expense	4,011	3,878	7,621	7,309
Earnings
Income before income taxes	2,073	1,149	3,897	2,436
Provision for income taxes	415	191	766	415
Net income	1,658	958	3,131	2,021
Noncontrolling interests	1	3	(3)	6
Net income available to the bank holding company	1,657	955	3,134	2,015
Preferred stock dividends and other	98	53	241	127
Net income available to common shareholders	$ 1,559	$ 902	$ 2,893	$ 1,888
Basic EPS	$ 1.16	$ 0.67	$ 2.16	$ 1.40
Diluted EPS	$ 1.16	$ 0.67	$ 2.14	$ 1.39
Basic weighted average shares outstanding (in shares)	1,338,302	1,347,512	1,341,963	1,345,942
Diluted weighted average shares outstanding (in shares)	1,349,492	1,355,834	1,354,210	1,356,809
Insurance income
Noninterest Income
Noninterest income	$ 690	$ 581	$ 1,316	$ 1,130
Wealth management income
Noninterest Income
Noninterest income	345	289	686	621
Service charges on deposits
Noninterest Income
Noninterest income	253	202	511	507
Residential mortgage income
Noninterest Income
Noninterest income	117	341	217	586
Investment banking and trading income
Noninterest Income
Noninterest income	317	274	657	392
Card and payment related fees
Noninterest Income
Noninterest income	225	171	425	358
Lending related fees
Noninterest Income
Noninterest income	94	66	194	133
Operating lease income
Noninterest Income
Noninterest income	66	83	134	160
Commercial real estate related income
Noninterest Income
Noninterest income	138	49	181	93
Income from bank-owned life insurance
Noninterest Income
Noninterest income	46	45	96	89
Securities gains (losses)
Noninterest Income
Noninterest income	0	300	0	298
Other income
Noninterest Income
Noninterest income	$ 114	$ 22	$ 185	$ 17