Financial Assets and Liabilities at Fair Value (Detail) - USD ($) $ in Thousands		Dec. 31, 2022		Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Accounts Receivable — Loans and Receivables		$ 315,039		$ 392,732
Assets		2,208,015		1,093,148
Securities Sold, Not Yet Purchased		$ 3,825		27,849
Derivative Asset, Statement of Financial Position [Extensible Enumeration]		Other Assets
Freestanding Derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives assets		$ 277,603		146,061
Derivatives liabilities		88,182		147,666
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets		4,628,104		4,111,556
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents		1,134,733		173,408
Total Investments		9,318,953		5,889,416
Accounts Receivable — Loans and Receivables		315,039		392,732
Assets		10,971,402		6,600,957
Securities Sold, Not Yet Purchased		3,825		27,849
Total Accounts Payable, Accrued Expenses and Other Liabilities		145,191		148,444
Liabilities		149,016		176,293
Fair Value, Measurements, Recurring | Corporate Treasury Commitments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Corporate Treasury Commitments	[1]	8,144		636
Fair Value, Measurements, Recurring | Freestanding Derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives liabilities		136,763	[2]	145,875
Total Accounts Payable, Accrued Expenses and Other Liabilities		284		1,933
Fair Value, Measurements, Recurring | Other Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments	[3]	3,128,447		3,212,521
Fair Value, Measurements, Recurring | Net Asset Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments		602,693		387,112
Assets		602,693		387,112
Fair Value, Measurements, Recurring | Net Asset Value | Other Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments	[3]	5,985		4,845
Fair Value, Measurements, Recurring | Consolidated Blackstone Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments		5,136,966		2,018,829
Derivatives assets		202,677		145,401
Fair Value, Measurements, Recurring | Consolidated Blackstone Funds | Freestanding Derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments		74,926		660
Fair Value, Measurements, Recurring | Consolidated Blackstone Funds | Investment Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments				18,365
Fair Value, Measurements, Recurring | Consolidated Blackstone Funds | Equity Securities, Partnerships and LLC Interests
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments	[4]	4,954,280		1,726,816
Fair Value, Measurements, Recurring | Consolidated Blackstone Funds | Debt Instruments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments		107,760		272,988
Fair Value, Measurements, Recurring | Consolidated Blackstone Funds | Net Asset Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments		596,708		382,267
Fair Value, Measurements, Recurring | Consolidated Blackstone Funds | Net Asset Value | Investment Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments				18,365
Fair Value, Measurements, Recurring | Consolidated Blackstone Funds | Net Asset Value | Equity Securities, Partnerships and LLC Interests
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments	[4]	596,708		363,902
Fair Value, Measurements, Recurring | Corporate Treasury Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments		1,053,540		658,066
Fair Value, Measurements, Recurring | Corporate Treasury Investments | Net Asset Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments		0		0
Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents		1,134,733		173,408
Total Investments		1,601,901		636,895
Assets		2,736,913		810,416
Securities Sold, Not Yet Purchased		3,825		4,292
Total Accounts Payable, Accrued Expenses and Other Liabilities		21		323
Liabilities		3,846		4,615
Fair Value, Measurements, Recurring | Level 1 | Freestanding Derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives liabilities		21	[2]	323
Fair Value, Measurements, Recurring | Level 1 | Other Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments	[3]	1,473,611		478,892
Fair Value, Measurements, Recurring | Level 1 | Consolidated Blackstone Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments		12,024		71,126
Derivatives assets		279		113
Fair Value, Measurements, Recurring | Level 1 | Consolidated Blackstone Funds | Equity Securities, Partnerships and LLC Interests
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments	[4]	12,024		70,484
Fair Value, Measurements, Recurring | Level 1 | Consolidated Blackstone Funds | Debt Instruments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments				642
Fair Value, Measurements, Recurring | Level 1 | Corporate Treasury Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments		116,266		86,877
Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments		2,807,504		1,146,585
Assets		3,003,692		1,291,873
Securities Sold, Not Yet Purchased				23,557
Total Accounts Payable, Accrued Expenses and Other Liabilities		88,445		147,485
Liabilities		88,445		171,042
Fair Value, Measurements, Recurring | Level 2 | Freestanding Derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives liabilities		88,161	[2]	145,552
Total Accounts Payable, Accrued Expenses and Other Liabilities		284		1,933
Fair Value, Measurements, Recurring | Level 2 | Other Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments	[3]	1,597,696		210,752
Fair Value, Measurements, Recurring | Level 2 | Consolidated Blackstone Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments		278,402		365,121
Derivatives assets		196,188		145,288
Fair Value, Measurements, Recurring | Level 2 | Consolidated Blackstone Funds | Freestanding Derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments		74,926		660
Fair Value, Measurements, Recurring | Level 2 | Consolidated Blackstone Funds | Equity Securities, Partnerships and LLC Interests
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments	[4]	149,689		122,068
Fair Value, Measurements, Recurring | Level 2 | Consolidated Blackstone Funds | Debt Instruments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments		53,787		242,393
Fair Value, Measurements, Recurring | Level 2 | Corporate Treasury Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments		931,406		570,712
Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments		4,306,855		3,718,824
Accounts Receivable — Loans and Receivables		315,039		392,732
Assets		4,628,104		4,111,556
Total Accounts Payable, Accrued Expenses and Other Liabilities		56,725		636
Liabilities		56,725		636
Fair Value, Measurements, Recurring | Level 3 | Corporate Treasury Commitments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Corporate Treasury Commitments	[1]	8,144		636
Fair Value, Measurements, Recurring | Level 3 | Freestanding Derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives liabilities	[2]	48,581
Fair Value, Measurements, Recurring | Level 3 | Other Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments	[3]	51,155		2,518,032
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments		4,249,832		1,200,315
Derivatives assets		6,210
Assets		4,249,832		1,200,315
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities, Partnerships and LLC Interests
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments	[4]	4,195,859		1,170,362
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Debt Instruments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments		53,973		29,953
Fair Value, Measurements, Recurring | Level 3 | Corporate Treasury Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Investments		$ 5,868		$ 477

[1] Corporate Treasury Commitments are measured using third party pricing.

[2] Level III freestanding derivatives are valued using an option pricing model where the significant inputs include the expected return and expected volatility.

[3] Other Investments includes Blackstone’s ownership of common stock of Corebridge. Following Corebridge’s IPO in September 2022, a quoted price for Corebridge’s common shares exists and as such the investment will be measured at fair value on a recurring basis as a Level I investment. Blackstone’s investment in Corebridge was previously valued as a Level III investment on a nonrecurring basis using the measurement alternative. See Note 4. “Investments — Other Investments” for additional details.

[4] Equity Securities, Partnership and LLC Interest includes investments in investment funds. Prior period amounts have been reclassified to this presentation.