Consolidated Statements of Income - USD ($) shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Interest Income
Interest and fees on loans and leases	$ 1,772	$ 1,591	$ 5,064	$ 4,632
Interest and dividends on securities	283	276	868	806
Interest on other earning assets	14	10	52	38
Total interest income	2,069	1,877	5,984	5,476
Interest Expense
Interest on deposits	172	91	438	240
Interest on short-term borrowings	29	15	72	22
Interest on long-term debt	181	124	497	323
Total interest expense	382	230	1,007	585
Net Interest Income	1,687	1,647	4,977	4,891
Provision for credit losses	135	126	420	409
Net Interest Income After Provision for Credit Losses	1,552	1,521	4,557	4,482
Noninterest Income
Total noninterest income	1,239	1,166	3,641	3,557
Noninterest Expense
Personnel expense	1,104	1,051	3,217	3,154
Occupancy and equipment expense	189	198	570	589
Software expense	70	62	202	177
Outside IT services	33	34	97	122
Regulatory charges	37	40	116	115
Amortization of intangibles	33	34	97	108
Loan-related expense	28	32	83	98
Professional services	33	27	95	87
Merger-related and restructuring charges, net	18	47	70	93
Loss (gain) on early extinguishment of debt	0	0	0	392
Other expense	197	220	601	654
Total noninterest expense	1,742	1,745	5,148	5,589
Earnings
Income before income taxes	1,049	942	3,050	2,450
Provision for income taxes	210	294	598	702
Net income	839	648	2,452	1,748
Noncontrolling interests	7	8	13	12
Dividends on preferred stock	43	43	130	130
Net income available to common shareholders	$ 789	$ 597	$ 2,309	$ 1,606
Basic EPS (in dollars per share)	$ 1.02	$ 0.75	$ 2.98	$ 2.00
Diluted EPS (in dollars per share)	1.01	0.74	2.94	1.97
Cash dividends declared per share (in dollars per share)	$ 0.405	$ 0.330	$ 1.155	$ 0.930
Basic weighted average shares outstanding (in shares)	771,562	794,558	775,642	804,424
Diluted weighted average shares outstanding (in shares)	781,867	806,124	786,140	816,029
Insurance income
Noninterest Income
Total noninterest income	$ 448	$ 397	$ 1,365	$ 1,336
Service charges on deposits
Noninterest Income
Total noninterest income	183	179	527	523
Mortgage banking income
Noninterest Income
Total noninterest income	79	114	272	311
Investment banking and brokerage fees and commissions
Noninterest Income
Total noninterest income	116	103	338	299
Trust and investment advisory revenues
Noninterest Income
Total noninterest income	71	68	215	206
Bankcard fees and merchant discounts
Noninterest Income
Total noninterest income	72	70	213	204
Checkcard fees
Noninterest Income
Total noninterest income	56	54	165	159
Operating lease income
Noninterest Income
Total noninterest income	37	36	110	109
Income from bank-owned life insurance
Noninterest Income
Total noninterest income	27	28	88	89
Other income
Noninterest Income
Total noninterest income	150	117	347	321
Securities gains (losses), net
Noninterest Income
Total noninterest income	0	0	1	0
Securities gains (losses), net
Gross realized gains	0	17	1	17
Gross realized losses	0	(17)	0	(17)
OTTI charges	0	0	0	0
Non-credit portion recognized in OCI	$ 0	$ 0	$ 0	$ 0