Transactions with Affiliated Funds - Fees Earned from Affiliated Funds (Detail) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Transactions With Affiliated Funds [Abstract] | ||||
| Fees earned from funds | $ 1,732 | $ 1,502 | $ 3,344 | $ 2,905 |