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Summary of Aggregate Notional Amount and Fair Value of Derivative Financial Instruments (Detail) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |
Derivative Assets, Notional | $ 1,674,018 | $ 1,943,891
Derivative Liabilities, Notional | 2,069,529 | 2,055,466
Derivative Assets, Fair Value | 190,464 | 190,079
Derivative Liabilities, Fair Value | 743,977 | 654,621
Freestanding Derivatives |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Assets, Notional | 839,931 | 855,683
Derivative Assets, Fair Value | 26,800 | 19,189
Freestanding Derivatives | Blackstone |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Assets, Notional | 834,087 | 1,088,208
Derivative Liabilities, Notional | 2,069,529 | 2,055,466
Derivative Assets, Fair Value | 163,664 | 170,890
Derivative Liabilities, Fair Value | 743,977 | 654,621
Freestanding Derivatives | Blackstone | Total Return Swaps |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Assets, Notional | 39,956 | 63,158
Derivative Assets, Fair Value | 5,812 | 13,171
Freestanding Derivatives | Blackstone | Credit Default Swap |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Assets, Notional |  | 3,108
Derivative Liabilities, Notional | 640 | 3,748
Derivative Assets, Fair Value |  | 479
Derivative Liabilities, Fair Value | 8 | 508
Freestanding Derivatives | Foreign Currency Contracts | Blackstone |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Assets, Notional | 167,391 | 387,102
Derivative Liabilities, Notional | 337,017 | 334,228
Derivative Assets, Fair Value | 465 | 11,442
Derivative Liabilities, Fair Value | 901 | 3,538
Freestanding Derivatives | Interest Rate Contracts | Blackstone |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Assets, Notional | 626,740 | 634,840
Derivative Liabilities, Notional | 600,000 | 607,000
Derivative Assets, Fair Value | 157,387 | 145,798
Derivative Liabilities, Fair Value | 97,066 | 86,589
Freestanding Derivatives | Interest Rate Contracts | Consolidated Blackstone Funds |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Assets, Notional | 839,931 | 855,683
Derivative Assets, Fair Value | 26,800 | 19,189
Freestanding Derivatives | Equity Options | Blackstone |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Liabilities, Notional | 1,131,872 | 1,110,490
Derivative Liabilities, Fair Value | $ 646,002 | $ 563,986

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