Consolidated Statements of Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Interest Income
Loans and leases, including fees	$ 1,085	$ 1,022	$ 862
Securities:
Taxable	126	119	97
Tax-exempt	32	28	20
Other	4	1	1
Total Interest Income	1,247	1,170	980
Interest Expense
Deposits	217	142	72
Short-term borrowings	80	75	44
Long-term borrowings	33	21	18
Total Interest Expense	330	238	134
Net Interest Income	917	932	846
Provision for credit losses	44	61	61
Net Interest Income After Provision for Credit Losses	873	871	785
Non-Interest Income
Service charges	124	126	120
Trust services	28	26	23
Insurance commissions and fees	20	18	19
Securities commissions and fees	17	18	15
Capital markets income	33	21	17
Mortgage banking operations	32	22	20
Dividends on non-marketable equity securities	19	16	9
Bank owned life insurance	12	13	12
Net securities gains	0	0	6
Other	9	16	11
Total Non-Interest Income	294	276	252
Non-Interest Expense
Salaries and employee benefits	375	370	327
Net occupancy	59	60	54
Equipment	62	55	49
Amortization of intangibles	14	16	18
Outside services	64	66	56
FDIC insurance	23	33	33
Bank shares and franchise taxes	12	12	10
Merger-related	0	0	57
Other	87	83	77
Total Non-Interest Expense	696	695	681
Income Before Income Taxes	471	452	356
Income taxes	84	79	157
Net Income	387	373	199
Preferred stock dividends	8	8	8
Net Income Available to Common Stockholders	$ 379	$ 365	$ 191
Earnings per Common Share
Basic (in usd per share)	$ 1.17	$ 1.13	$ 0.63
Diluted (in usd per share)	$ 1.16	$ 1.12	$ 0.63