CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Interest Income
Loans and leases, including fees	$ 1,985.0	$ 1,754.0	$ 1,117.0
Securities:
Taxable	196.0	150.0	117.0
Tax-exempt	28.0	28.0	27.0
Other	43.0	41.0	24.0
Total Interest Income	2,252.0	1,973.0	1,285.0
Interest Expense
Deposits	754.0	495.0	108.0
Short-term borrowings	99.0	78.0	25.0
Long-term borrowings	119.0	83.0	32.0
Total Interest Expense	972.0	656.0	165.0
Net Interest Income	1,280.0	1,317.0	1,120.0
Provision for credit losses	79.8	71.8	64.0
Net Interest Income After Provision for Credit Losses	1,200.0	1,245.0	1,056.0
Non-Interest Income
Service charges	91.0	82.0	86.0
Interchange and card transaction fees	52.0	52.0	51.0
Trust services	46.0	43.0	39.0
Insurance commissions and fees	22.0	23.0	24.0
Securities commissions and fees	31.0	28.0	24.0
Capital markets income	24.0	27.0	35.0
Mortgage banking operations	27.0	21.0	21.0
Dividends on non-marketable equity securities	25.0	21.0	12.0
Bank owned life insurance	17.0	12.0	12.0
Net securities gains (losses)	(34.0)	(67.0)	0.0
Other	15.0	12.0	19.0
Total Non-Interest Income	316.0	254.0	323.0
Non-Interest Expense
Salaries and employee benefits	504.0	462.0	426.0
Net occupancy	79.0	70.0	68.0
Equipment	98.0	91.0	76.0
Outside services	96.0	84.0	73.0
Marketing	21.0	17.0	16.0
FDIC insurance	41.0	61.0	20.0
Bank shares and franchise taxes	14.0	14.0	14.0
Other	108.0	116.0	133.0
Total Non-Interest Expense	961.0	915.0	826.0
Income Before Income Taxes	555.0	584.0	553.0
Income taxes	90.0	99.0	114.0
Net Income	465.0	485.0	439.0
Preferred stock dividends	6.0	8.0	8.0
Net Income Available to Common Shareholders	459.0	477.0	431.0
Net Income Available to Common Shareholders	$ 459.0	$ 477.0	$ 431.0
Earnings per Common Share
Basic (USD per share)	$ 1.27	$ 1.32	$ 1.23
Diluted (USD per share)	$ 1.27	$ 1.31	$ 1.22