Consolidated Statements of Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Interest income:
Interest and fees on loans	$ 218.3	$ 111.9	$ 561.7	$ 325.1
Interest and dividends on investment securities:
Taxable	64.3	17.1	142.4	48.7
Exempt from federal taxes	1.4	1.4	4.1	4.2
Other Interest and Dividend Income	1.3	0.2	2.8	0.2
Interest on deposits in banks	1.4	0.7	6.5	1.7
Total interest income	286.7	131.3	717.5	379.9
Interest expense:
Interest on deposits	13.3	1.9	20.6	6.4
Interest on securities sold under repurchase agreements	0.8	0.1	1.4	0.3
Interest Expense, Other Short-term Borrowings	2.4	0.0	2.4	0.0
Interest on long-term debt	1.5	1.5	4.6	4.5
Interest on subordinated debentures held by subsidiary trusts	1.9	0.7	4.3	2.1
Total interest expense	19.9	4.2	33.3	13.3
Net interest income	266.8	127.1	684.2	366.6
Provision for (reversal of) credit losses	8.4	0.0	68.0	(5.1)
Net interest income after provision for (reversal of) credit losses	258.4	127.1	616.2	371.7
Non-interest income:
Payment Services Revenues	20.4	12.2	54.7	33.8
Mortgage banking revenues	2.7	11.6	16.1	32.8
Wealth management revenues	8.5	6.5	25.9	19.1
Service Charges on Deposit Accounts	5.7	4.4	19.7	12.1
Non-interest income	4.7	1.4	12.6	5.1
Debt Securities, Available-for-sale, Gain (Loss)	(24.2)	0.3	(24.4)	0.2
Other income	5.1	3.1	17.0	9.8
Total non-interest income	22.9	39.5	121.6	112.9
Non-interest expense:
Salaries and wages	71.9	42.0	206.7	122.6
Employee benefits	19.6	12.9	60.2	43.7
Outsourced technology services	15.9	8.2	40.0	24.7
Occupancy, net	11.3	7.3	32.5	21.7
Furniture and equipment	5.8	4.5	17.0	13.0
OREO expense, net of income	0.0	0.0	0.1	(0.1)
Professional fees	5.1	2.7	14.5	9.3
FDIC insurance premiums	4.1	1.7	10.2	4.8
Other intangibles amortization	4.1	2.4	11.8	7.4
Other expenses	31.4	17.6	82.7	49.6
Acquisition related expenses	4.0	6.6	115.0	6.6
Noninterest Expense	173.2	105.9	590.7	303.3
Income before income tax	108.1	60.7	147.1	181.3
Provision for income tax	22.4	13.6	30.7	40.3
Net income	$ 85.7	$ 47.1	$ 116.4	$ 141.0
Earnings per common share, basic (in dollars per share)	$ 0.80	$ 0.76	$ 1.13	$ 2.29
Earnings per common share, diluted (in dollars per share)	$ 0.80	$ 0.76	$ 1.13	$ 2.28
Weighted average common shares outstanding, basic (in shares)	106,525,974	61,673,656	102,879,422	61,641,342
Weighted average common shares outstanding, diluted (in shares)	106,589,699	61,747,972	102,935,360	61,732,822