Derivative Instruments and Hedging Activities - Additional Information (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($) swap	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) swap	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Derivative [Line Items]
Aggregate fair value of net liability position	$ 0		$ 0
Derivatives not designated as hedging instruments:
Derivative [Line Items]
Notional amount	$ 14,200,152,000		$ 14,200,152,000		$ 10,613,888,000
Interest rate swaps
Derivative [Line Items]
Number of instruments held | swap	5		5
Notional amount	$ 500,000,000		$ 500,000,000
Accumulated net after-tax losses related to effective cash flow hedges	831,000		831,000		1,300,000
Reclassified to interest expense	730,000		730,000
Interest rate swaps | Fair value hedge interest rate swaps | Noninterest Income
Derivative [Line Items]
Fee income related to derivative interest rate swaps executed with commercial loan customers	$ 11,100,000	$ 7,600,000	$ 25,100,000	$ 13,800,000
Interest rate swaps | Derivatives not designated as hedging instruments:
Derivative [Line Items]
Number of instruments held | swap	26		26
Notional amount	$ 12,523,601,000		$ 12,523,601,000		$ 10,179,294,000
Interest rate swaps | Derivatives not designated as hedging instruments: | Fair value hedge interest rate swaps
Derivative [Line Items]
Number of instruments held | swap	2		2
Notional amount	$ 10,400,000		$ 10,400,000
Interest rate swaps | Derivatives not designated as hedging instruments: | Risk Participation Agreement
Derivative [Line Items]
Notional amount	$ 243,900,000		$ 243,900,000