Basis of Presentation and Accounting Standards Updates - Schedule of Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Supplemental disclosure of cash flow information:
Interest paid	$ 393,822	$ 416,290
Income taxes paid	3,790	11,240
Non-cash investing and financing activities:
Transfer of loans held for investment to foreclosed properties and repossessed assets	310	742
Transfer of returned finance lease equipment to assets held for sale	727	1,524
Transfer of loans held for investment to loans held for sale	59,948	284,806
Deposit overdrafts reclassified as loan balances	4,486	12,251
ROU lease assets obtained in exchange for operating lease liabilities	24,261	4,143
Approved commitments to fund LIHTC investments	70,753	158,654
Tangible assets acquired	0	256,957
Goodwill and other intangible assets	0	417,085
Liabilities assumed	0	299,507
Forgiveness of long-term debt	0	12,875
Pre-existing equity interest	0	$ 2,200
Ametros
Non-cash investing and financing activities:
Liabilities assumed	293,700
Sellers Transaction Expenses
Non-cash investing and financing activities:
Liabilities assumed	$ 5,800