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Summary of Quantitative Inputs and Assumptions for Items Categorized in Level III of Fair Value Hierarchy (Detail) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Fair value assets |  | $ 3,138,009 | $ 3,957,327 |
Level 3 |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Fair value assets |  | 2,886,067 | 3,277,350 |
Fair value liabilities |  | 647,393 | 565,637 |
Fair Value, Measurements, Recurring |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Fair value assets |  | 8,808,642 | 9,768,806 |
Fair value liabilities |  | 919,070 | 1,347,280 |
Fair Value, Measurements, Recurring | Level 3 |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Fair value assets |  | 2,886,067 | 3,277,350 |
Fair value liabilities |  | 647,393 | 565,637 |
Fair Value, Measurements, Recurring | Level 3 | Loans and Receivables | Discounted Cash Flows |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Fair value assets |  | $ 95,532 | $ 60,738 |
Fair Value, Measurements, Recurring | Level 3 | Minimum | Loans and Receivables | Measurement Input, Discount Rate |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Unobservable inputs, rate |  |  | 8.80% |
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 |  | 8.80% |  |
Fair Value, Measurements, Recurring | Level 3 | Maximum | Loans and Receivables | Measurement Input, Discount Rate |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Unobservable inputs, rate |  |  | 14.90% |
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 |  | 14.00% |  |
Fair Value, Measurements, Recurring | Level 3 | Weighted Average | Loans and Receivables | Measurement Input, Discount Rate |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Unobservable inputs, rate | [1] |  | 10.30% |
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] | 10.30% |  |
Fair Value, Measurements, Recurring | Level 3 | Other Investments | Third Party Pricing Valuation Technique |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Fair value assets | [2] | $ 78,367 | $ 236,612 |
Fair Value, Measurements, Recurring | Level 3 | Freestanding Derivatives | Valuation Technique, Option Pricing Model |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Fair value liabilities | [3] | $ 646,002 | $ 563,986 |
Fair Value, Measurements, Recurring | Level 3 | Freestanding Derivatives | Valuation Technique, Option Pricing Model | Measurement Input, Price Volatility |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Volatility |  | 6.2 | 6.3 | [3]
Fair Value, Measurements, Recurring | Level 3 | Other Liabilities | Third Party Pricing Valuation Technique |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Fair value liabilities | [4] | $ 1,391 | $ 1,651 |
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Fair value assets |  | 2,703,592 | 2,683,631 |
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 |  | $ 2,688,028 | $ 2,653,246 |
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities, Partnerships and LLC Interests | Minimum | Measurement Input, Discount Rate |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Unobservable inputs, rate |  |  | 3.30% |
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 | 4 |
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities, Partnerships and LLC Interests | Minimum | Measurement Input, Cap Rate |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Exit Capitalization Rate |  | 3.10% | 3.10% |
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 |  | 3.30% |  |
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities, Partnerships and LLC Interests | Maximum | Measurement Input, Discount Rate |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Unobservable inputs, rate |  |  | 38.00% |
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 | 30.6 |
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities, Partnerships and LLC Interests | Maximum | Measurement Input, Cap Rate |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Exit Capitalization Rate |  | 13.20% | 12.80% |
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 |  | 38.60% |  |
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities, Partnerships and LLC Interests | Weighted Average | Measurement Input, Discount Rate |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Unobservable inputs, rate | [1] |  | 9.70% |
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] | 15 | 15 |
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities, Partnerships and LLC Interests | Weighted Average | Measurement Input, Cap Rate |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Exit Capitalization Rate | [1] | 5.10% | 5.10% |
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] | 10.10% |  |
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Debt Instruments | Third Party Pricing Valuation Technique |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Fair value assets |  | $ 15,564 | $ 30,385 |
Fair Value, Measurements, Recurring | Level 3 | Corporate Treasury Investments | Discounted Cash Flows |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Fair value assets |  |  | $ 296,369 |
Fair Value, Measurements, Recurring | Level 3 | Corporate Treasury Investments | Transaction Price Valuation Technique |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Fair value assets |  | $ 8,576 |  |
Fair Value, Measurements, Recurring | Level 3 | Corporate Treasury Investments | Minimum | Measurement Input, Discount Rate |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Unobservable inputs, rate |  |  | 11.20% |
Fair Value, Measurements, Recurring | Level 3 | Corporate Treasury Investments | Maximum | Measurement Input, Discount Rate |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Unobservable inputs, rate |  |  | 22.40% |
Fair Value, Measurements, Recurring | Level 3 | Corporate Treasury Investments | Weighted Average | Measurement Input, Discount Rate |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Unobservable inputs, rate | [1] |  | 17.10% |
[1] | Unobservable inputs were weighted based on the fair value of the investments included in the range.
[2] | As of March 31, 2024 and December 31, 2023, Other Investments includes Level III Freestanding Derivatives.
[3] | The volatility of the historical performance of the underlying reference entity is used to project the expected returns relevant for the fair value of the derivative.
[4] | As of March 31, 2024 and December 31, 2023, Other Liabilities includes Level III Contingent Consideration and Level III Corporate Treasury Commitments.

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