Commitments and Contingencies - Additional Information (Details) $ in Thousands		1 Months Ended	12 Months Ended
	May 28, 2021	Jun. 30, 2021 USD ($)	Dec. 31, 2023 USD ($) swap contract	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Commitments And Contingencies [Line Items]
Subordinated notes, interest rate	3.00%
Derivatives designated as hedging instruments:
Commitments And Contingencies [Line Items]
Notional amount			$ 800,000	$ 900,000
Derivatives not designated as hedging instruments:
Commitments And Contingencies [Line Items]
Notional amount			17,878,243	16,058,364
Derivative—interest rate swaps:
Commitments And Contingencies [Line Items]
Notional amount		$ 300,000	500,000
Accumulated net after-tax gain (loss) related to effective cash flow hedges			(2,100)	(2,200)
Reclassified to interest expense			$ 1,200
Derivative—interest rate swaps: | Minimum
Commitments And Contingencies [Line Items]
Fixed interest rate			4.20%
Derivative—interest rate swaps: | Maximum
Commitments And Contingencies [Line Items]
Fixed interest rate			4.60%
Derivative—interest rate swaps: | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Commitments And Contingencies [Line Items]
Annual interest rate spread, percentage		2.187%
Variable interest rate			4.47%
Derivative—interest rate swaps: | Fair value hedge interest rate swaps | Non-interest income
Commitments And Contingencies [Line Items]
Fee income			$ 35,700	48,800	$ 26,900
Derivative—interest rate swaps: | Derivatives designated as hedging instruments: | Cash flow hedge interest rate swaps
Commitments And Contingencies [Line Items]
Number of derivative instruments | contract			6
Notional amount			$ 600,000
Derivative instrument pre-tax gain (loss)			3,600
Derivative—interest rate swaps: | Derivatives designated as hedging instruments: | Fair value hedge interest rate swaps
Commitments And Contingencies [Line Items]
Notional amount			$ 800,000	300,000
Derivative—interest rate swaps: | Derivatives not designated as hedging instruments:
Commitments And Contingencies [Line Items]
Number of derivative instruments | swap			43
Notional amount			$ 16,282,279	$ 14,753,330
Derivative—interest rate swaps: | Derivatives not designated as hedging instruments: | Risk Participation
Commitments And Contingencies [Line Items]
Notional amount			$ 537,800
Derivative—interest rate swaps: | Derivatives not designated as hedging instruments: | Fair value hedge interest rate swaps
Commitments And Contingencies [Line Items]
Number of derivative instruments | swap			2
Notional amount			$ 10,400