Summary of Significant Accounting Policies - New Accounting Pronouncements Adopted (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Jan. 01, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
New Accounting Pronouncements Adopted and Recent Accounting Pronouncements [Line Items]
Allowance for loan losses	$ 668,743	$ 601,673	$ 595,645	$ 541,579	$ 619,983
Retained earnings	(6,465,230)		(5,582,546)
Accounting Standards Update 2022-02
New Accounting Pronouncements Adopted and Recent Accounting Pronouncements [Line Items]
Allowance for loan losses			$ (6,000)
Retained earnings		$ (4,000)
Accounting Standards Update 2023-02
New Accounting Pronouncements Adopted and Recent Accounting Pronouncements [Line Items]
Retained earnings	$ 10,000