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Investments (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Schedule of Investments [Line Items]
Investments	$ 22,242,040	$ 20,377,031
Partnership Investments
Schedule of Investments [Line Items]
Investments	3,802,565	3,649,423
Accrued Performance Allocations
Schedule of Investments [Line Items]
Investments	6,743,542	5,883,924
Other Investments
Schedule of Investments [Line Items]
Investments	264,231	260,853
Consolidated Blackstone Funds
Schedule of Investments [Line Items]
Investments	8,633,794	8,376,338
Corporate Treasury Investments
Schedule of Investments [Line Items]
Investments	$ 2,797,908	$ 2,206,493

X

- Definition

Sum of the carrying amounts as of the balance sheet date of all investments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(h))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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- Definition

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+ References

No definition available.

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