Derivative Instruments and Hedging Activities - Additional Information (Details)	3 Months Ended
	Mar. 31, 2022 USD ($) swap	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)
Derivative [Line Items]
Aggregate fair value of net liability position	$ 0
Derivatives not designated as hedging instruments:
Derivative [Line Items]
Notional amount	$ 11,445,618,000		$ 10,613,888,000
Interest rate swaps
Derivative [Line Items]
Number of instruments held | swap	5
Notional amount	$ 500,000,000
Accumulated net after-tax losses related to effective cash flow hedges	728,000		1,300,000
Reclassified to interest expense	485,000
Interest rate swaps | Fair value hedge | Noninterest Income
Derivative [Line Items]
Fee income related to derivative interest rate swaps executed with commercial loan customers	$ 14,000,000	$ 6,200,000
Interest rate swaps | Derivatives not designated as hedging instruments:
Derivative [Line Items]
Number of instruments held | swap	25
Notional amount	$ 11,264,601,000		$ 10,301,460,000
Interest rate swaps | Derivatives not designated as hedging instruments: | Fair value hedge
Derivative [Line Items]
Number of instruments held | swap	2
Notional amount	$ 10,400,000
Interest rate swaps | Derivatives not designated as hedging instruments: | Risk Participation Agreement
Derivative [Line Items]
Notional amount	$ 245,600,000