XML 79 R60.htm IDEA: XBRL DOCUMENT v3.22.1
Derivative Financial Instruments - Information about Interest Rate Swap Agreements (Detail) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Derivative [Line Items]    
Notional Amount $ 20,650,000,000 $ 23,350,000,000
Average Maturity (in years) 1 year 8 months 12 days
Estimated Fair Value Gain (Loss) $ 3,841,000 $ (207,000)
Interest Payments On Variable Rate Commercial Real Estate Loans [Member] | Cash Flow Hedges [Member]    
Derivative [Line Items]    
Notional Amount $ 19,000,000,000 $ 21,700,000,000
Average Maturity (in years) 10 months 24 days 7 months 6 days
Weighted-Average Rate, Fixed 1.31% 1.24%
Weighted-Average Rate, Variable 0.35% 0.09%
Estimated Fair Value Gain (Loss) $ 2,819,000 $ (248,000)
Fixed Rate Long-Term Borrowings [Member] | Fair Value Hedges [Member]    
Derivative [Line Items]    
Notional Amount $ 1,650,000,000 $ 1,650,000,000
Average Maturity (in years) 2 years 1 month 6 days 2 years 3 months 18 days
Weighted-Average Rate, Fixed 2.86% 2.86%
Weighted-Average Rate, Variable 1.09% 0.74%
Estimated Fair Value Gain (Loss) $ 1,022,000 $ 41,000