v3.26.1
FAIR VALUE - Schedule of Investments and Other Financial Instruments of Consolidated Funds by Fair-Value Hierarchy Level (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Derivative assets, at fair value $ 21,258 $ 9,070
Derivative liabilities (42,760) (48,893)
Consolidated Funds    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Total investments 5,370,693 5,012,977
Derivative assets, at fair value 21,258 9,070
Total assets 5,391,951 5,022,047
Derivative liabilities (42,760) (48,893)
Total liabilities (42,760) (48,893)
Consolidated Funds | Foreign-currency forward contracts    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Derivative assets, at fair value 20,539 7,800
Derivative liabilities (39,054) (47,032)
Consolidated Funds | Swaps    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Derivative assets, at fair value 719 1,270
Derivative liabilities (686) 0
Consolidated Funds | Options and futures    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Derivative assets, at fair value 56  
Derivative liabilities (3,020) (1,861)
Consolidated Funds | Corporate debt – bank debt    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Total investments 1,796,229 1,743,127
Consolidated Funds | Corporate debt – all other    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Total investments 357,367 289,522
Consolidated Funds | Equities – common stock    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Total investments 2,102,768 1,849,178
Consolidated Funds | Equities – preferred stock    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Total investments 767,184 778,610
Consolidated Funds | Real estate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Total investments 347,145 352,540
Consolidated Funds | Level I    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Total investments 194,145 199,510
Derivative assets, at fair value 0 0
Total assets 194,145 199,510
Derivative liabilities 0 0
Total liabilities 0 0
Consolidated Funds | Level I | Foreign-currency forward contracts    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Derivative assets, at fair value 0 0
Derivative liabilities 0 0
Consolidated Funds | Level I | Swaps    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Derivative assets, at fair value 0 0
Derivative liabilities 0 0
Consolidated Funds | Level I | Options and futures    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Derivative liabilities 0 0
Consolidated Funds | Level I | Corporate debt – bank debt    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Total investments 0 0
Consolidated Funds | Level I | Corporate debt – all other    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Total investments 0 0
Consolidated Funds | Level I | Equities – common stock    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Total investments 192,100 197,832
Consolidated Funds | Level I | Equities – preferred stock    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Total investments 2,045 1,678
Consolidated Funds | Level I | Real estate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Total investments 0 0
Consolidated Funds | Level II    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Total investments 516,157 417,727
Derivative assets, at fair value 21,258 9,070
Total assets 537,415 426,797
Derivative liabilities (42,760) (48,893)
Total liabilities (42,760) (48,893)
Consolidated Funds | Level II | Foreign-currency forward contracts    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Derivative assets, at fair value 20,539 7,800
Derivative liabilities (39,054) (47,032)
Consolidated Funds | Level II | Swaps    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Derivative assets, at fair value 719 1,270
Derivative liabilities (686) 0
Consolidated Funds | Level II | Options and futures    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Derivative liabilities (3,020) (1,861)
Consolidated Funds | Level II | Corporate debt – bank debt    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Total investments 151,480 116,518
Consolidated Funds | Level II | Corporate debt – all other    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Total investments 191,435 209,394
Consolidated Funds | Level II | Equities – common stock    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Total investments 99,032 91,815
Consolidated Funds | Level II | Equities – preferred stock    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Total investments 0 0
Consolidated Funds | Level II | Real estate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Total investments 74,210 0
Consolidated Funds | Level III    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Total investments 4,660,391 4,395,740
Derivative assets, at fair value 0 0
Total assets 4,660,391 4,395,740
Derivative liabilities 0 0
Total liabilities 0 0
Consolidated Funds | Level III | Foreign-currency forward contracts    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Derivative assets, at fair value 0 0
Derivative liabilities 0 0
Consolidated Funds | Level III | Swaps    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Derivative assets, at fair value 0 0
Derivative liabilities 0 0
Consolidated Funds | Level III | Options and futures    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Derivative liabilities 0 0
Consolidated Funds | Level III | Corporate debt – bank debt    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Total investments 1,644,749 1,626,609
Consolidated Funds | Level III | Corporate debt – all other    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Total investments 165,932 80,128
Consolidated Funds | Level III | Equities – common stock    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Total investments 1,811,636 1,559,531
Consolidated Funds | Level III | Equities – preferred stock    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Total investments 765,139 776,932
Consolidated Funds | Level III | Real estate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Total investments $ 272,935 $ 352,540