Transactions with Affiliated Funds - Fees Receivable from Affiliated Funds and the Aggregate Carrying Value of the Firm's Interests in these Funds (Detail) - USD ($) $ in Millions |
Sep. 30, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Transactions With Affiliated Funds [Abstract] | ||
| Fees receivable from funds | $ 1,021 | $ 803 |
| Aggregate carrying value of interests in funds | $ 5,372 | $ 5,068 |