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Credit Concentrations - Additional Information (Detail) - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
Concentration Risk [Line Items]    
Cash and cash equivalents $ 169,577 $ 182,092
Cash deposits held at the Federal Reserve Bank of New York $ 86,490 $ 105,780
Percentage of credit exposure to any other counterparty 2.00% 2.00%
Central banks    
Concentration Risk [Line Items]    
Cash and cash equivalents $ 133,640 $ 151,840