Summary of Quantitative Inputs and Assumptions for Items Categorized in Level III of Fair Value Hierarchy (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets	$ 8,452,816	$ 12,649,547
Fair Value, Measurements, Recurring
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets	12,972,820	16,940,420
Fair Value, Measurements, Recurring | Level 3
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets	1,548,050	1,388,672
Fair Value, Measurements, Recurring | Level 3 | Loans and Receivables | Discounted Cash Flows
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets	217,709	$ 239,659
Fair Value, Measurements, Recurring | Level 3 | Loans and Receivables | Transaction Price Valuation Technique
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets	$ 128,894
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	5.80%	7.10%
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	10.20%	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	9.00%	8.80%
Fair Value, Measurements, Recurring | Level 3 | Other Investments | Discounted Cash Flows
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets	$ 61,105	$ 65,821
Fair Value, Measurements, Recurring | Level 3 | Other Investments | Discounted Cash Flows | Measurement Input, Default Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate	2.00%	2.00%
Fair Value, Measurements, Recurring | Level 3 | Other Investments | Discounted Cash Flows | Measurement Input, Constant Prepayment Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate	20.00%	20.00%
Fair Value, Measurements, Recurring | Level 3 | Other Investments | Discounted Cash Flows | Measurement Input, Expected Term [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Recovery Lag	12 months	12 months
Fair Value, Measurements, Recurring | Level 3 | Other Investments | Discounted Cash Flows | Measurement Input Recovery Rate [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Recovery Rate	70.00%	70.00%
Fair Value, Measurements, Recurring | Level 3 | Other Investments | Discounted Cash Flows | Measurement Input Reinvestment Rate [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Reinvestment Rate	4.00%
Fair Value, Measurements, Recurring | Level 3 | Other Investments | Transaction Price Valuation Technique
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets	$ 25,397	$ 29,572
Fair Value, Measurements, Recurring | Level 3 | Other Investments | Minimum | Discounted Cash Flows | Measurement Input, Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate	0.70%	0.70%
Fair Value, Measurements, Recurring | Level 3 | Other Investments | Minimum | Discounted Cash Flows | Measurement Input Reinvestment Rate [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Reinvestment Rate		4.00%
Fair Value, Measurements, Recurring | Level 3 | Other Investments | Maximum | Discounted Cash Flows | Measurement Input, Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate	8.90%	13.00%
Fair Value, Measurements, Recurring | Level 3 | Other Investments | Maximum | Discounted Cash Flows | Measurement Input Reinvestment Rate [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Reinvestment Rate		4.13%
Fair Value, Measurements, Recurring | Level 3 | Other Investments | Weighted Average | Discounted Cash Flows | Measurement Input, Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate	1.90%	2.20%
Fair Value, Measurements, Recurring | Level 3 | Other Investments | Weighted Average | Discounted Cash Flows | Measurement Input Reinvestment Rate [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Reinvestment Rate		4.01%
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets	$ 1,086,724	$ 1,029,371
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Assets Of Consolidated CLO Vehicles | Discounted Cash Flows
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets	$ 37
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Assets Of Consolidated CLO Vehicles | Discounted Cash Flows | Measurement Input, Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate	8.00%
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Assets Of Consolidated CLO Vehicles | Market Comparable Companies
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets		$ 8,277
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Assets Of Consolidated CLO Vehicles | Market Comparable Companies | EBITDA Multiple Market
Fair Value, Option, Quantitative Disclosures [Line Items]
EBITDA Multiple		7.0
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Assets Of Consolidated CLO Vehicles | Third Party Pricing Valuation Technique
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets	$ 529,785	$ 499,624
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Discounted Cash Flows
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets	118,659	91,753
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Market Comparable Companies
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets	1,477	$ 862
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Market Comparable Companies | EBITDA Multiple Market
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Multiple - EBITDA		8
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Other
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets	28,049	$ 17,536
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Transaction Price Valuation Technique
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets	10,870	$ 21,716
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Third Party Pricing Valuation Technique
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets	$ 54
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Minimum | Discounted Cash Flows | Measurement Input, Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate	7.10%	7.10%
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Minimum | Discounted Cash Flows | Measurement Input, Long-term Revenue Growth Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate	(11.90%)	1.00%
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Minimum | Discounted Cash Flows | Measurement Input, Revenue Multiple
Fair Value, Option, Quantitative Disclosures [Line Items]
Book Value Multiple	1.1
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Minimum | Discounted Cash Flows | Measurement Input, Cap Rate [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Capitalization Rate	5.00%	5.00%
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Minimum | Discounted Cash Flows | EBITDA Multiple Market
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Multiple - EBITDA	2.8	4.0
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Minimum | Discounted Cash Flows | Measurement Input Net Operating Income Rate[Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Multiple - NOI	8.8
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Minimum | Discounted Cash Flows | Measurement Input, Commodity Market Price [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Multiple - P/E	10.0	9.5
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Minimum | Discounted Cash Flows | Measurement Input Net Operating Income [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Multiple - NOI		8.8
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Minimum | Market Comparable Companies | Measurement Input, Revenue Multiple
Fair Value, Option, Quantitative Disclosures [Line Items]
Book Value Multiple	0.7	0.8
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Maximum | Discounted Cash Flows | Measurement Input, Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate	25.70%	31.40%
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Maximum | Discounted Cash Flows | Measurement Input, Long-term Revenue Growth Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate	37.30%	49.40%
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Maximum | Discounted Cash Flows | Measurement Input, Revenue Multiple
Fair Value, Option, Quantitative Disclosures [Line Items]
Book Value Multiple	9.5
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Maximum | Discounted Cash Flows | Measurement Input, Cap Rate [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Capitalization Rate	11.40%	11.40%
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Maximum | Discounted Cash Flows | EBITDA Multiple Market
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Multiple - EBITDA	16.0	16.0
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Maximum | Discounted Cash Flows | Measurement Input Net Operating Income Rate[Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Multiple - NOI	12.8
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Maximum | Discounted Cash Flows | Measurement Input, Commodity Market Price [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Multiple - P/E	17.0	17.0
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Maximum | Discounted Cash Flows | Measurement Input Net Operating Income [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Multiple - NOI		12.5
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Maximum | Market Comparable Companies | Measurement Input, Revenue Multiple
Fair Value, Option, Quantitative Disclosures [Line Items]
Book Value Multiple	0.9	0.9
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Weighted Average | Discounted Cash Flows | Measurement Input, Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate	12.60%	12.60%
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Weighted Average | Discounted Cash Flows | Measurement Input, Long-term Revenue Growth Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate	7.10%	7.10%
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Weighted Average | Discounted Cash Flows | Measurement Input, Revenue Multiple
Fair Value, Option, Quantitative Disclosures [Line Items]
Book Value Multiple	8.3
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Weighted Average | Discounted Cash Flows | Measurement Input, Cap Rate [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Capitalization Rate	8.10%	8.50%
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Weighted Average | Discounted Cash Flows | EBITDA Multiple Market
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Multiple - EBITDA	10.2	9.9
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Weighted Average | Discounted Cash Flows | Measurement Input Net Operating Income Rate[Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Multiple - NOI	11.0
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Weighted Average | Discounted Cash Flows | Measurement Input, Commodity Market Price [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Multiple - P/E	14.2	11.0
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Weighted Average | Discounted Cash Flows | Measurement Input Net Operating Income [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Multiple - NOI		10.5
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Equity Securities | Weighted Average | Market Comparable Companies | Measurement Input, Revenue Multiple
Fair Value, Option, Quantitative Disclosures [Line Items]
Book Value Multiple	0.8	0.9
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Partnership And LLC Interests | Discounted Cash Flows
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets	$ 267,616	$ 293,744
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Partnership And LLC Interests | Discounted Cash Flows | Measurement Input Net Operating Income [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Multiple - NOI	12.5	12.5
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Partnership And LLC Interests | Market Comparable Companies
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets	$ 578	$ 530
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Partnership And LLC Interests | Market Comparable Companies | Measurement Input, Revenue Multiple
Fair Value, Option, Quantitative Disclosures [Line Items]
Book Value Multiple	1	1
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Partnership And LLC Interests | Market Comparable Companies | EBITDA Multiple Market
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Multiple - EBITDA	8
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Partnership And LLC Interests | Other
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets	$ 27,668	$ 22,346
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Partnership And LLC Interests | Transaction Price Valuation Technique
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets	17,587	14,070
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Partnership And LLC Interests | Third Party Pricing Valuation Technique
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets	$ 543	$ 758
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Partnership And LLC Interests | Minimum | Discounted Cash Flows | Measurement Input, Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate	4.60%	4.60%
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Partnership And LLC Interests | Minimum | Discounted Cash Flows | Measurement Input, Long-term Revenue Growth Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate	(2.10%)	(22.20%)
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Partnership And LLC Interests | Minimum | Discounted Cash Flows | Measurement Input, Revenue Multiple
Fair Value, Option, Quantitative Disclosures [Line Items]
Book Value Multiple	8.5
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Partnership And LLC Interests | Minimum | Discounted Cash Flows | Measurement Input, Cap Rate [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Capitalization Rate	1.50%	3.10%
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Partnership And LLC Interests | Minimum | Discounted Cash Flows | EBITDA Multiple Market
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Multiple - EBITDA	0.1	0.1
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Partnership And LLC Interests | Maximum | Discounted Cash Flows | Measurement Input, Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate	26.50%	26.50%
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Partnership And LLC Interests | Maximum | Discounted Cash Flows | Measurement Input, Long-term Revenue Growth Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate	45.50%	71.50%
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Partnership And LLC Interests | Maximum | Discounted Cash Flows | Measurement Input, Revenue Multiple
Fair Value, Option, Quantitative Disclosures [Line Items]
Book Value Multiple	9.3
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Partnership And LLC Interests | Maximum | Discounted Cash Flows | Measurement Input, Cap Rate [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Capitalization Rate	25.00%	10.00%
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Partnership And LLC Interests | Maximum | Discounted Cash Flows | EBITDA Multiple Market
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Multiple - EBITDA	28.6	15.0
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Partnership And LLC Interests | Weighted Average | Discounted Cash Flows | Measurement Input, Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate	9.90%	9.80%
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Partnership And LLC Interests | Weighted Average | Discounted Cash Flows | Measurement Input, Long-term Revenue Growth Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate	7.60%	8.40%
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Partnership And LLC Interests | Weighted Average | Discounted Cash Flows | Measurement Input, Revenue Multiple
Fair Value, Option, Quantitative Disclosures [Line Items]
Book Value Multiple	9.2
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Partnership And LLC Interests | Weighted Average | Discounted Cash Flows | Measurement Input, Cap Rate [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Capitalization Rate	5.90%	5.70%
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Partnership And LLC Interests | Weighted Average | Discounted Cash Flows | EBITDA Multiple Market
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Multiple - EBITDA	10.5	8.6
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Debt Instruments | Discounted Cash Flows
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets	$ 7,384	$ 6,122
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Debt Instruments | Discounted Cash Flows | Measurement Input, Long-term Revenue Growth Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate	23.60%	7.70%
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Debt Instruments | Discounted Cash Flows | Measurement Input, Cap Rate [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Capitalization Rate	3.90%	8.30%
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Debt Instruments | Discounted Cash Flows | Measurement Input Net Operating Income [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Exit Multiple - NOI		12.0
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	$ 12,680	$ 1,897
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	$ 63,737	$ 50,136
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Debt Instruments | Minimum | Discounted Cash Flows | Measurement Input, Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate	6.30%	6.60%
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Debt Instruments | Maximum | Discounted Cash Flows | Measurement Input, Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate	16.70%	18.40%
Fair Value, Measurements, Recurring | Level 3 | Consolidated Blackstone Funds | Debt Instruments | Weighted Average | Discounted Cash Flows | Measurement Input, Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate	9.50%	9.60%
Fair Value, Measurements, Recurring | Level 3 | Corporate Treasury Investments | Discounted Cash Flows
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets	$ 11,070	$ 8,886
Fair Value, Measurements, Recurring | Level 3 | Corporate Treasury Investments | Discounted Cash Flows | Measurement Input, Default Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate	2.00%	2.00%
Fair Value, Measurements, Recurring | Level 3 | Corporate Treasury Investments | Discounted Cash Flows | Measurement Input, Constant Prepayment Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate	20.00%	20.00%
Fair Value, Measurements, Recurring | Level 3 | Corporate Treasury Investments | Discounted Cash Flows | Measurement Input, Expected Term [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Recovery Lag	12 months	12 months
Fair Value, Measurements, Recurring | Level 3 | Corporate Treasury Investments | Discounted Cash Flows | Measurement Input Reinvestment Rate [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Reinvestment Rate		4.00%
Fair Value, Measurements, Recurring | Level 3 | Corporate Treasury Investments | Third Party Pricing Valuation Technique
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value assets	$ 17,151	$ 15,363
Fair Value, Measurements, Recurring | Level 3 | Corporate Treasury Investments | Minimum | Discounted Cash Flows | Measurement Input, Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate		5.10%
Fair Value, Measurements, Recurring | Level 3 | Corporate Treasury Investments | Minimum | Discounted Cash Flows | Measurement Input Recovery Rate [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Recovery Rate	30.00%	30.00%
Fair Value, Measurements, Recurring | Level 3 | Corporate Treasury Investments | Minimum | Discounted Cash Flows | Measurement Input Reinvestment Rate [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Reinvestment Rate	3.50%
Fair Value, Measurements, Recurring | Level 3 | Corporate Treasury Investments | Minimum | Loans and Receivables | Discounted Cash Flows | Measurement Input, Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate	0.70%
Fair Value, Measurements, Recurring | Level 3 | Corporate Treasury Investments | Maximum | Discounted Cash Flows | Measurement Input, Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate		6.30%
Fair Value, Measurements, Recurring | Level 3 | Corporate Treasury Investments | Maximum | Discounted Cash Flows | Measurement Input Recovery Rate [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Recovery Rate	70.00%	70.00%
Fair Value, Measurements, Recurring | Level 3 | Corporate Treasury Investments | Maximum | Discounted Cash Flows | Measurement Input Reinvestment Rate [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Reinvestment Rate	4.00%
Fair Value, Measurements, Recurring | Level 3 | Corporate Treasury Investments | Maximum | Loans and Receivables | Discounted Cash Flows | Measurement Input, Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate	6.00%
Fair Value, Measurements, Recurring | Level 3 | Corporate Treasury Investments | Weighted Average | Discounted Cash Flows | Measurement Input, Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate		5.40%
Fair Value, Measurements, Recurring | Level 3 | Corporate Treasury Investments | Weighted Average | Discounted Cash Flows | Measurement Input Recovery Rate [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Recovery Rate	68.00%	68.10%
Fair Value, Measurements, Recurring | Level 3 | Corporate Treasury Investments | Weighted Average | Discounted Cash Flows | Measurement Input Reinvestment Rate [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Reinvestment Rate	3.91%
Fair Value, Measurements, Recurring | Level 3 | Corporate Treasury Investments | Weighted Average | Loans and Receivables | Discounted Cash Flows | Measurement Input, Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Unobservable inputs, rate	4.10%