Summary of Changes in Financial Assets and Liabilities Measured at Fair Value for Which Level III Inputs Were Used (Detail) - Level 3 - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance, Beginning of Period	$ 3,117,393	$ 4,595,842
Transfer Out Due to Deconsolidation	(14,237)	(3,837)
Transfer Into Level III	3,434	14,771
Transfer Out of Level III	(2,546)	(3,039)
Purchases	288,430	404,422
Sales	(435,475)	(406,066)
Issuances	9,561	50,689
Settlements	(24,270)	(33,268)
Changes in Gains (Losses) In cludedin Earnings	(66,024)	100,887
Balance, End of Period	2,876,266	4,720,401
Changes in Unrealized Gains (Losses) Included in Earnings Related to Financial Assets Still Held at the Reporting Date	$ (43,393)	$ 74,300
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Unrealized Gain (Loss) on Investments	Unrealized Gain (Loss) on Investments
Balance, Beginning of Period	$ 565,637	$ 56,725
Transfer In Due to Consolidation and Acquisition	0	2,300
Changes in Losses (Gains) Included in Earnings	81,756	152,612
Balance, End of Period	647,393	211,637
Changes in Unrealized Losses (Gains) Included in Earnings Related to Financial Liabilities Still Held at the Reporting Date	81,756	152,612
Other Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance, Beginning of Period	373,024	30,971
Transfer Into Level III	0	898
Transfer Out of Level III	0	(2,726)
Purchases	5,675	49,404
Sales	(289,993)	(180)
Settlements	(10,160)	528
Changes in Gains (Losses) In cludedin Earnings	(1,404)	(4,291)
Balance, End of Period	77,142	74,604
Changes in Unrealized Gains (Losses) Included in Earnings Related to Financial Assets Still Held at the Reporting Date	(3,305)	534
Other Liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance, Beginning of Period	1,651	8,144
Transfer In Due to Consolidation and Acquisition	0	2,300
Changes in Losses (Gains) Included in Earnings	(260)	(2,226)
Balance, End of Period	1,391	8,218
Changes in Unrealized Losses (Gains) Included in Earnings Related to Financial Liabilities Still Held at the Reporting Date	(260)	(2,226)
Freestanding Derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance, Beginning of Period	563,986	48,581
Changes in Losses (Gains) Included in Earnings	82,016	154,838
Balance, End of Period	646,002	203,419
Changes in Unrealized Losses (Gains) Included in Earnings Related to Financial Liabilities Still Held at the Reporting Date	82,016	154,838
Loans and Receivables
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance, Beginning of Period	60,738	315,039
Purchases	149,639	55,070
Sales	(111,167)	(86,725)
Issuances	9,561	50,689
Settlements	(14,110)	(33,796)
Changes in Gains (Losses) In cludedin Earnings	871	7,011
Balance, End of Period	95,532	307,288
Changes in Unrealized Gains (Losses) Included in Earnings Related to Financial Assets Still Held at the Reporting Date	(793)	1,737
Consolidated Blackstone Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance, Beginning of Period	2,683,631	4,249,832
Transfer Out Due to Deconsolidation	(14,237)	(3,837)
Transfer Into Level III	3,434	13,873
Transfer Out of Level III	(2,546)	(313)
Purchases	133,116	299,948
Sales	(34,315)	(319,161)
Changes in Gains (Losses) In cludedin Earnings	(65,491)	98,167
Balance, End of Period	2,703,592	4,338,509
Changes in Unrealized Gains (Losses) Included in Earnings Related to Financial Assets Still Held at the Reporting Date	$ (39,295)	$ 72,029

Fair value liabilities measured on recurring basis change in unrealized gain loss included in earnings one.

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Indicates line item in statement in which net income is reported that includes unrealized gain (loss) from asset measured at fair value using unobservable input (level 3) and still held.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of unrealized gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3) and still held.

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Amount of transfers of financial instrument classified as a liability into level 3 of the fair value hierarchy.

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Amount of issuances of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of sale of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of settlement of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of transfers of financial instrument classified as an asset out of level 3 of the fair value hierarchy.

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Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

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