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Revenue from Contracts with Customers - Additional Information (Detail) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Disaggregation Of Revenue [Line Items]    
Uncollected amounts receivable $ 68 $ 67
Accrued interest and other liabilities [Member]    
Disaggregation Of Revenue [Line Items]    
Deferred revenue $ 45 $ 42