Consolidated Statements of Income - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Interest Income
Interest and fees on loans and leases	$ 1,605	$ 1,501
Interest and dividends on securities	291	258
Interest on other earning assets	25	16
Total interest income	1,921	1,775
Interest Expense
Interest on deposits	118	69
Interest on short-term borrowings	20	2
Interest on long-term debt	150	95
Total interest expense	288	166
Net Interest Income	1,633	1,609
Provision for credit losses	150	148
Net Interest Income After Provision for Credit Losses	1,483	1,461
Noninterest Income
Insurance income	436	458
Service charges on deposits	165	168
Mortgage banking income	99	103
Investment banking and brokerage fees and commissions	113	91
Trust and investment advisory revenues	72	68
Bankcard fees and merchant discounts	69	59
Checkcard fees	52	51
Operating lease income	37	36
Income from bank-owned life insurance	31	29
Other income	106	108
Securities gains (losses), net
Gross realized gains	0	0
Gross realized losses	0	0
OTTI charges	0	0
Non-credit portion recognized in OCI	0	0
Total securities gains (losses), net	0	0
Total noninterest income	1,180	1,171
Noninterest Expense
Personnel expense	1,039	1,035
Occupancy and equipment expense	194	193
Software expense	65	58
Outside IT services	32	49
Regulatory charges	40	39
Amortization of intangibles	33	38
Loan-related expense	29	30
Professional services	30	22
Merger-related and restructuring charges, net	28	36
Loss (gain) on early extinguishment of debt	0	392
Other expense	196	210
Total noninterest expense	1,686	2,102
Earnings
Income before income taxes	977	530
Provision for income taxes	186	104
Net income	791	426
Noncontrolling interests	3	5
Dividends on preferred stock	43	43
Net income available to common shareholders	$ 745	$ 378
Basic EPS (in dollars per share)	$ 0.96	$ 0.47
Diluted EPS (in dollars per share)	0.94	0.46
Cash dividends declared per share (in dollars per share)	$ 0.375	$ 0.300
Basic weighted average shares outstanding (in shares)	779,617	809,903
Diluted weighted average shares outstanding (in shares)	791,005	822,719