Summary of Changes in Financial Assets Measured at Fair Value for Which Level III Inputs Were Used (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]		Unrealized Gain (Loss) on Investments
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance, Beginning of Period	$ 1,637,034	$ 1,485,547
Transfer In Due to Consolidation and Acquisition	2,985,171
Transfer Into Level III	4,557	22,416
Transfer Out of Level III	(96,218)	(128,340)
Purchases	1,456,237	1,562,359
Sales	(1,314,844)	(1,652,114)
Issuances	39,514	58,221
Settlements	(59,741)	(85,444)
Changes in Gains (Losses) Included in Earnings	(55,868)	374,389
Balance, End of Period	4,595,842	1,637,034
Changes in Unrealized Gains (Losses) Included in Earnings Related to Financial Assets Still Held at the Reporting Date	(160,692)	291,147
Level 3 \| Other Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance, Beginning of Period	43,987	46,158
Transfer Into Level III	2,517	14,162
Transfer Out of Level III	(19,597)	(16,388)
Purchases	14,524	225,297
Sales	(3,797)	(226,866)
Settlements	(4,433)
Changes in Gains (Losses) Included in Earnings	(2,230)	1,624
Balance, End of Period	30,971	43,987
Changes in Unrealized Gains (Losses) Included in Earnings Related to Financial Assets Still Held at the Reporting Date	(11,271)	1,412
Level 3 \| Loans and Receivables
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance, Beginning of Period	392,732	581,079
Purchases	805,375	955,236
Sales	(882,668)	(1,132,405)
Issuances	39,514	58,221
Settlements	(55,308)	(85,444)
Changes in Gains (Losses) Included in Earnings	15,394	16,045
Balance, End of Period	315,039	392,732
Changes in Unrealized Gains (Losses) Included in Earnings Related to Financial Assets Still Held at the Reporting Date	(13,384)	(9,005)
Level 3 \| Consolidated Blackstone Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance, Beginning of Period	1,200,315	858,310
Transfer In Due to Consolidation and Acquisition	2,985,171
Transfer Into Level III	2,040	8,254
Transfer Out of Level III	(76,621)	(111,952)
Purchases	636,338	381,826
Sales	(428,379)	(292,843)
Changes in Gains (Losses) Included in Earnings	(69,032)	356,720
Balance, End of Period	4,249,832	1,200,315
Changes in Unrealized Gains (Losses) Included in Earnings Related to Financial Assets Still Held at the Reporting Date	$ (136,037)	$ 298,740

Fair value measurement with unobservable inputs reconciliation recurring basis asset gain (loss) included in earnings.

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- Definition

Fair value measurement with unobservable inputs reconciliation recurring basis asset transfer in due to consolidation and acquisition.

+ References

No definition available.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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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.

+ References

No definition available.

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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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- Definition

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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-Section 50
-Paragraph 2
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-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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- Definition

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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- Definition

Amount of transfer of financial instrument classified as an asset into level 3 of the fair value hierarchy.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(3)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(3)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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- Definition

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.

+ References

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-Publisher FASB
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-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
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-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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