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Derivatives and Hedging Activities - Additional Information (Detail)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2022
USD ($)
Derivative
Jun. 30, 2022
USD ($)
Derivative
Dec. 31, 2021
USD ($)
Derivative
Aug. 28, 2020
USD ($)
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Hedging adjustments amortized through contractual maturity date in connection with terminated hedge $ 15,900,000      
Termination value of derivatives in net liability position 0 $ 0    
Collateral posted for derivative instruments 0 $ 0    
Derivatives Designated as Hedging Instruments [Member] | Cash Flow Hedging [Member]        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Interest rate hedging exposure to variability in future cash flows for forecasted transactions, maximum period   14 years 2 months 12 days    
Interest Rate Swap [Member] | Derivatives Designated as Hedging Instruments [Member] | Fair Value Hedging [Member]        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Derivative, notional amount $ 757,900,000,000 $ 757,900,000,000 $ 1,000,000,000.0  
Number of interest rate swaps | Derivative 8 8 10  
Interest Rate Swap [Member] | Derivatives Designated as Hedging Instruments [Member] | Cash Flow Hedging [Member]        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Derivative, notional amount $ 51,500,000 $ 51,500,000 $ 51,500,000  
Number of interest rate swaps | Derivative 2 2 2  
Interest Rate Swap [Member] | Derivatives Designated as Hedging Instruments [Member] | Cash Flow Hedging [Member] | Interest Expense [Member]        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Reclassification from AOCI to interest $ 212,000 $ 212,000    
Interest Rate Swap [Member] | Derivatives not Designated as Hedging Instruments [Member]        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Derivative, notional amount $ 3,400,000,000 $ 3,400,000,000 $ 2,900,000,000  
Number of interest rate swaps | Derivative 208 208 188  
Interest Rate Floor [Member] | Derivatives Designated as Hedging Instruments [Member] | Cash Flow Hedging [Member]        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Derivative, notional amount       $ 750,000,000.0
Net asset fair value       $ 34,100,000
Unrealized gain on terminated interest rate floor remaining in AOCI, pre tax   $ 9,900,000 $ 12,300,000  
Unrealized gain on terminated interest rate floor remaining in AOCI, net of tax   $ 7,500,000 $ 9,400,000  
Unrealized gain reclassification to earnings, remaining term   2 years 2 months 12 days    
Interest rate floor termination date   Aug. 28, 2020    
Interest Rate Floor [Member] | Derivatives Designated as Hedging Instruments [Member] | Cash Flow Hedging [Member] | Reduction To Interest Income [Member]        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Reclassification from AOCI to interest $ 5,000,000.0 $ 5,000,000.0