Parent Company Information - Schedule of Condensed Statements of Financial Condition (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Assets
Interest bearing deposits with banks	$ 1,844,764	$ 1,071,360
Equity securities	36,473	29,378
Other assets	813,139	971,961
Total Assets	43,446,443	40,686,076
Liabilities and Shareholders’ Equity
Junior subordinated debentures issued to capital trusts	56,413	56,065
Shareholders’ equity	5,084,066	4,592,120	$ 4,384,188	$ 3,350,454
Total Liabilities and Shareholders’ Equity	43,446,443	40,686,076
Parent Company
Assets
Cash	77,760	130,163
Interest bearing deposits with banks	250	0
Equity securities	6,135	2,999
Investments in and receivables due from subsidiaries	5,764,957	4,998,795
Other assets	23,521	11,133
Total Assets	5,872,623	5,143,090
Liabilities and Shareholders’ Equity
Dividends payable to shareholders	49,265	46,591
Long-term borrowings	634,643	403,413
Junior subordinated debentures issued to capital trusts	56,413	56,065
Accrued expenses and other liabilities	48,236	44,901
Shareholders’ equity	5,084,066	4,592,120
Total Liabilities and Shareholders’ Equity	$ 5,872,623	$ 5,143,090