v3.26.1
Summary of Aggregate Notional Amount and Fair Value of Derivative Financial Instruments (Detail) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Derivatives, Fair Value [Line Items]    
Derivative Assets, Notional $ 2,119,535 $ 1,960,663
Derivative Liabilities, Notional 3,529,909 3,975,364
Derivative Assets, Fair Value 158,251 147,337
Derivative Liabilities, Fair Value 1,268,752 1,251,539
Freestanding Derivatives    
Derivatives, Fair Value [Line Items]    
Derivative Assets, Notional 858,527 880,390
Derivative Liabilities, Notional 864,362 880,390
Derivative Assets, Fair Value 10,028 12,780
Derivative Liabilities, Fair Value 10,054 12,780
Freestanding Derivatives | Blackstone    
Derivatives, Fair Value [Line Items]    
Derivative Assets, Notional 1,261,008 1,080,273
Derivative Liabilities, Notional 2,665,547 3,094,974
Derivative Assets, Fair Value 148,223 134,557
Derivative Liabilities, Fair Value 1,258,698 1,238,759
Freestanding Derivatives | Blackstone | Credit Default Swap    
Derivatives, Fair Value [Line Items]    
Derivative Liabilities, Notional 640 640
Derivative Liabilities, Fair Value 21 19
Freestanding Derivatives | Blackstone | Total Return Swaps    
Derivatives, Fair Value [Line Items]    
Derivative Assets, Notional 81,490 23,532
Derivative Assets, Fair Value 8,872 3,364
Freestanding Derivatives | Interest Rate Contracts | Blackstone    
Derivatives, Fair Value [Line Items]    
Derivative Assets, Notional 612,050 613,740
Derivative Liabilities, Notional 666,331 601,000
Derivative Assets, Fair Value 129,193 123,747
Derivative Liabilities, Fair Value 98,081 97,283
Freestanding Derivatives | Interest Rate Contracts | Consolidated Blackstone Funds    
Derivatives, Fair Value [Line Items]    
Derivative Assets, Notional 858,527 880,390
Derivative Liabilities, Notional 858,527 880,390
Derivative Assets, Fair Value 10,028 12,780
Derivative Liabilities, Fair Value 10,028 12,780
Freestanding Derivatives | Foreign Currency Contracts | Blackstone    
Derivatives, Fair Value [Line Items]    
Derivative Assets, Notional 567,468 443,001
Derivative Liabilities, Notional 476,754 1,030,702
Derivative Assets, Fair Value 10,158 7,446
Derivative Liabilities, Fair Value 8,535 17,310
Freestanding Derivatives | Foreign Currency Contracts | Consolidated Blackstone Funds    
Derivatives, Fair Value [Line Items]    
Derivative Liabilities, Notional 5,835  
Derivative Liabilities, Fair Value 26  
Freestanding Derivatives | Equity Options | Blackstone    
Derivatives, Fair Value [Line Items]    
Derivative Liabilities, Notional 1,521,822 1,462,632
Derivative Liabilities, Fair Value $ 1,152,061 $ 1,124,147