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Deposits - Additional Information (Detail) - USD ($)
$ in Millions
Sep. 30, 2024
Dec. 31, 2023
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Accrued interest payable on deposits $ 52.7 $ 39.2
Total deposits reclassified to loans due to overdrafts $ 1.5 $ 1.6