Transactions with Affiliated Funds - Additional Information (Detail) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||||
|---|---|---|---|---|---|---|
Jun. 30, 2021 |
Jun. 30, 2020 |
Jun. 30, 2021 |
Jun. 30, 2020 |
Dec. 31, 2020 |
Mar. 31, 2020 |
|
| Transactions With Affiliated Funds [Abstract] | ||||||
| Management fees waived | $ 161 | $ 19 | $ 266 | $ 31 | ||
| Outstanding guarantees on behalf of certain nonconsolidated investment funds | 87 | 87 | $ 87 | |||
| Fair value of certificates of deposit and commercial paper purchased | $ 0 | $ 0 | $ 321 | $ 1,840 | ||