Current Accounting Developments and Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Jan. 01, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for loan losses	$ 619,893	$ 601,673	$ 595,645	$ 545,685	$ 541,579
Retained earnings	$ (5,832,291)		(5,582,546)
Accounting Standards Update 2022-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for loan losses			$ (6,000)
Retained earnings		$ (4,300)