v3.26.1
Summary of Changes in Financial Assets and Liabilities Measured at Fair Value for Which Level III Inputs Were Used (Detail) - Level 3 - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Balance, Beginning of Period $ 4,639,444 $ 3,898,720
Transfer Out Due to Deconsolidation (317,078) (155,572)
Transfer Into Level III [1] 769 1,362
Transfer Out of Level III [1] (12,708) (1,758)
Purchases 1,033,967 1,303,242
Sales (404,906) (679,376)
Issuances   3,058
Settlements [2] (7,137) (7,880)
Changes in Gains (Losses) Included in Earnings (15,979) 150,863
Balance, End of Period 4,916,372 4,512,659
Changes in Unrealized Gains (Losses) Included in Earnings Related to Financial Assets Still Held at the Reporting Date $ (1,325) $ 74,911
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments
Balance, Beginning of Period $ 1,124,744 $ 939,088
Changes in Losses (Gains) Included in Earnings 26,965 88,517
Balance, End of Period 1,151,709 1,027,605
Changes in Unrealized Losses (Gains) Included in Earnings Related to Financial Liabilities Still Held at the Reporting Date 26,965 88,516
Freestanding Derivatives    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Balance, Beginning of Period 1,124,147 938,216
Changes in Losses (Gains) Included in Earnings 25,108 88,081
Balance, End of Period 1,149,255 1,026,297
Changes in Unrealized Losses (Gains) Included in Earnings Related to Financial Liabilities Still Held at the Reporting Date 25,108 88,080
Other Liabilities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Balance, Beginning of Period 597 872
Changes in Losses (Gains) Included in Earnings 1,857 436
Balance, End of Period 2,454 1,308
Changes in Unrealized Losses (Gains) Included in Earnings Related to Financial Liabilities Still Held at the Reporting Date 1,857 436
Other Investments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Balance, Beginning of Period [3] 310,196 624,412
Transfer Out of Level III [1] (10,740)  
Purchases 410,722 14,032 [3]
Sales (116,292) (503,475) [3]
Settlements [2] (1,123) (167) [3]
Changes in Gains (Losses) Included in Earnings (10,556) 10,429 [3]
Balance, End of Period 582,207 145,231 [3]
Changes in Unrealized Gains (Losses) Included in Earnings Related to Financial Assets Still Held at the Reporting Date (11,486) 5,026 [3]
Loans and Receivables    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Balance, Beginning of Period 205,158 100,866
Purchases 382,533 82,314
Sales (159,763) (67,345)
Issuances   3,058
Settlements [2] (6,014) (7,713)
Changes in Gains (Losses) Included in Earnings 4,067 3,875
Balance, End of Period 425,981 115,055
Changes in Unrealized Gains (Losses) Included in Earnings Related to Financial Assets Still Held at the Reporting Date (1,262) 214
Consolidated Blackstone Funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Balance, Beginning of Period 4,124,090 3,173,442
Transfer Out Due to Deconsolidation (317,078) (155,572)
Transfer Into Level III [1] 769 1,362
Transfer Out of Level III [1] (1,968) (1,758)
Purchases 240,712 1,206,896
Sales (128,851) (108,556)
Changes in Gains (Losses) Included in Earnings (9,490) 136,559
Balance, End of Period 3,908,184 4,252,373
Changes in Unrealized Gains (Losses) Included in Earnings Related to Financial Assets Still Held at the Reporting Date $ 11,423 $ 69,671
[1] Transfers in and out of Level III financial assets and liabilities were due to changes in the observability of inputs used in the valuation of such assets and liabilities.
[2] For Freestanding Derivatives included within Other Investments, Settlements includes all ongoing contractual cash payments made or received over the life of the instrument.
[3] Represents freestanding derivatives, corporate treasury investments and Other Investments.