Summary of Quantitative Inputs and Assumptions for Items Categorized in Level III of Fair Value Hierarchy (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets		$ 2,711,651		$ 2,208,015
Level 3
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets		4,720,401		4,628,104
Fair Value, Measurements, Recurring
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets		10,124,723		10,971,402
Fair Value, Measurements, Recurring | Level 3
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets		4,720,401		4,628,104
Fair Value, Measurements, Recurring | Level 3 | Loans and Receivables | Discounted Cash Flows
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets		$ 307,288		315,039
Fair Value, Measurements, Recurring | Level 3 | Minimum | Loans and Receivables | Discounted Cash Flows | Measurement Input, Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate		8.50%	7.60%
Fair Value, Measurements, Recurring | Level 3 | Maximum | Loans and Receivables | Discounted Cash Flows | Measurement Input, Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate		12.60%	11.50%
Fair Value, Measurements, Recurring | Level 3 | Weighted Average | Loans and Receivables | Discounted Cash Flows | Measurement Input, Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate	[1]	9.80%	9.80%
Fair Value, Measurements, Recurring | Level 3 | Other Investments | Transaction Price Valuation Technique
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets	[2]	$ 69,283		57,365
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets		4,338,509		4,249,832
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities, Partnerships and LLC Interests | Discounted Cash Flows
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets		$ 4,301,218		4,195,859
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities, Partnerships and LLC Interests | Minimum | Measurement Input, Cap Rate [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Capitalization Rate		2.80%	2.60%
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities, Partnerships and LLC Interests | Minimum | EBITDA Multiple Market
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Multiple - EBITDA		4
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities, Partnerships and LLC Interests | Minimum | Discounted Cash Flows | Measurement Input, Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate		4.10%	4.10%
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities, Partnerships and LLC Interests | Minimum | Discounted Cash Flows | EBITDA Multiple Market
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Multiple - EBITDA			4
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities, Partnerships and LLC Interests | Maximum | Measurement Input, Cap Rate [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Capitalization Rate		14.30%	14.40%
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities, Partnerships and LLC Interests | Maximum | EBITDA Multiple Market
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Multiple - EBITDA		30.6
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities, Partnerships and LLC Interests | Maximum | Discounted Cash Flows | Measurement Input, Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate		35.50%	34.50%
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities, Partnerships and LLC Interests | Maximum | Discounted Cash Flows | EBITDA Multiple Market
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Multiple - EBITDA			30.6
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities, Partnerships and LLC Interests | Weighted Average | Measurement Input, Cap Rate [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Capitalization Rate	[1]	4.80%	4.70%
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities, Partnerships and LLC Interests | Weighted Average | EBITDA Multiple Market
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Multiple - EBITDA	[1]	14.8
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities, Partnerships and LLC Interests | Weighted Average | Discounted Cash Flows | Measurement Input, Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate	[1]	7.60%	8.80%
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities, Partnerships and LLC Interests | Weighted Average | Discounted Cash Flows | EBITDA Multiple Market
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Multiple - EBITDA	[1]		14.7
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Debt Instruments | Discounted Cash Flows
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets				53,973
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Debt Instruments | Transaction Price Valuation Technique
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets		$ 37,291
Fair Value, Measurements, Recurring | Level 3 | Corporate Treasury Investments | Discounted Cash Flows
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets				$ 5,868
Fair Value, Measurements, Recurring | Level 3 | Corporate Treasury Investments | Third Party Pricing Valuation Technique
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets		$ 5,321

[1] Unobservable inputs were weighted based on the fair value of the investments included in the range.

[2] As of March 31, 2023 and December 31, 2022, Other Investments includes Level III Freestanding Derivatives.