Parent Company Condensed Financial Statements - Schedule of Condensed Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
ASSETS
Cash and cash equivalents due from banks	$ 5,250,742	$ 4,614,984
Other assets	1,907,189	1,964,743
TOTAL	75,976,475	69,612,884	$ 64,112,150
LIABILITIES AND STOCKHOLDERS’ EQUITY
Total stockholders’ equity	7,723,054	6,950,834	$ 5,984,612	$ 5,837,218
TOTAL	75,976,475	69,612,884
Parent Company
ASSETS
Cash and cash equivalents due from banks	394,919	445,770
Other assets	125,552	120,742
TOTAL	7,781,978	7,122,866
LIABILITIES AND STOCKHOLDERS’ EQUITY
Long-term debt	32,001	148,249
Other liabilities	26,923	23,783
Total stockholders’ equity	7,723,054	6,950,834
TOTAL	7,781,978	7,122,866
Parent Company | Bank
ASSETS
Investments in subsidiaries	7,251,084	6,542,852
Parent Company | Nonbank
ASSETS
Investments in subsidiaries	$ 10,423	$ 13,502