Borrowed Funds - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Debt Instrument [Line Items]
Other long-term debt	$ 305,200		$ 534,800
Other short-term borrowings	1,750,000		1,440,000
FRB BTFP Borrowing	550,000		450,000
Available for sale debt securities, at fair value	1,666,306		1,690,112
Interest expense, borrowings	17,400	$ 7,500
Asset Pledged as Collateral | Securities Sold under Agreements to Repurchase
Debt Instrument [Line Items]
Available for sale debt securities, at fair value	993,400		924,600
Asset Pledged as Collateral | Federal Funds Purchased
Debt Instrument [Line Items]
Available for sale debt securities, at fair value	$ 580,000		$ 589,100