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v3.25.2

Borrowings - Additional Information (Detail) - USD ($) $ in Millions | 1 Months Ended |
--- | --- | ---
Jul. 31, 2025 | Jun. 30, 2025 | Dec. 31, 2024
Debt Instrument [Line Items] |  |  |
Senior notes |  | $ 3,744 | $ 3,745
FHLB of New York |  |  |
Debt Instrument [Line Items] |  |  |
Available line of credit |  | 18,100 |
FRB of New York |  |  |
Debt Instrument [Line Items] |  |  |
Available line of credit |  | 24,700 |
Five Point One Seven Nine Percentage Fixed Rate Senior Notes Due To Mature In July 2030 |  |  |
Debt Instrument [Line Items] |  |  |
Senior notes |  | $ 750 |
Debt instrument, interest rate, stated percentage |  | 5.179% |
Variable rate |  | 1.40% |
Four Point Seven Six Two Percentage Fixed Rate Senior Notes Due To Mature In July 2027 |  |  |
Debt Instrument [Line Items] |  |  |
Senior notes |  | $ 750 |
Debt instrument, interest rate, stated percentage |  | 4.762% |
Variable rate |  | 0.95% |
Five Point Four Zero Percentage Fixed Rate Senior Notes Due To Mature In July 2030 | Subsequent Event |  |  |
Debt Instrument [Line Items] |  |  |
Senior notes | $ 750 |  |
Debt instrument, interest rate, stated percentage | 5.40% |  |
Variable rate | 1.43% |  |

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