Basis of Presentation and Accounting Standards Updates - Schedule of Cash Flow Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Supplemental disclosure of cash flow information:
Interest paid	$ 765,626	$ 811,338
Income taxes paid	53,100	84,450
Non-cash investing and financing activities:
Transfer of loans held for investment to foreclosed properties and repossessed assets	3,967	1,925
Transfer of returned finance lease equipment to assets held for sale	579	2,316
Transfer of loans held for investment to loans held for sale	317,172	333,483
ROU lease assets obtained in exchange for operating lease liabilities	28,437	8,259
Approved commitments to fund LIHTC investments	99,054	212,041
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