Consolidated Statements of Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Interest Income
Loans and leases, including fees	$ 886	$ 990	$ 1,085
Securities:
Taxable	86	106	126
Tax-exempt	29	32	32
Other	4	2	4
Total Interest Income	1,005	1,130	1,247
Interest Expense
Deposits	47	133	217
Short-term borrowings	27	38	80
Long-term borrowings	24	37	33
Total Interest Expense	98	208	330
Net Interest Income	907	922	917
Provision (benefit) for credit losses	1	123	44
Net Interest Income After Provision for Credit Losses	906	799	873
Non-Interest Income
Service charges	122	108	124
Trust services	37	31	28
Insurance commissions and fees	25	24	20
Securities commissions and fees	22	17	17
Capital markets income	37	39	33
Mortgage banking operations	37	50	32
Dividends on non-marketable equity securities	9	14	19
Bank owned life insurance	15	14	12
Loss on debt extinguishment	0	(17)	0
Other	26	14	9
Total Non-Interest Income	330	294	294
Non-Interest Expense
Salaries and employee benefits	418	406	375
Net occupancy	58	71	59
Equipment	70	66	62
Amortization of intangibles	12	13	14
Outside services	71	69	64
Marketing	14	13	13
FDIC insurance	18	20	23
Bank shares and franchise taxes	13	14	12
Merger-related	2	0	0
Other	57	78	74
Total Non-Interest Expense	733	750	696
Income Before Income Taxes	503	343	471
Income taxes	98	57	84
Net Income	405	286	387
Preferred stock dividends	8	8	8
Net Income Available to Common Stockholders	397	278	379
Net Income Available to Common Stockholders	$ 397	$ 278	$ 379
Earnings per Common Share
Basic (USD per share)	$ 1.24	$ 0.86	$ 1.17
Diluted (USD per share)	$ 1.23	$ 0.85	$ 1.16