Parent Company Information - Schedule of Condensed Statements of Financial Condition (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Assets
Equity securities	$ 71,513	$ 64,464
Other assets	1,713,831	1,421,567
Total Assets	62,491,691	60,934,974
Liabilities and Shareholders’ Equity
Junior subordinated debentures issued to capital trusts	57,455	57,108
Shareholders’ equity	7,435,127	6,701,391	$ 6,400,802	$ 5,084,066
Total Liabilities and Shareholders’ Equity	62,491,691	60,934,974
Parent Company
Assets
Cash	277,072	193,248
Equity securities	37,076	29,404
Investments in and receivables due from subsidiaries	7,905,565	7,290,923
Other assets	8,306	12,473
Total Assets	8,228,019	7,526,048
Liabilities and Shareholders’ Equity
Dividends payable to shareholders	64,917	60,918
Long-term borrowings	647,547	638,362
Junior subordinated debentures issued to capital trusts	57,455	57,108
Accrued expenses and other liabilities	22,973	68,269
Shareholders’ equity	7,435,127	6,701,391
Total Liabilities and Shareholders’ Equity	$ 8,228,019	$ 7,526,048