Short-Term Borrowings and Long-Term Debt - Schedule of Short-Term Borrowings (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Interest Rate	4.37%
Short-term borrowings	$ 4,500,000	$ 0
Parent company
Debt Instrument [Line Items]
Junior Subordinated Notes	$ 148,249	$ 147,950
Weighted-average rate (as a percent)	6.87%	3.49%
Minimum | Parent company | Subordinated Debt
Debt Instrument [Line Items]
Variable interest rate	7.00%
Maximum | Parent company | Subordinated Debt
Debt Instrument [Line Items]
Variable interest rate	7.55%