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DERIVATIVE INSTRUMENTS - Schedule of Location and Amount of the Gain (Loss) Recognized (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of gain (loss) recognized on derivatives | $ 206,304 | $ 13,681 | $ 355,759 | $ (61,718)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Net foreign exchange gains (losses), Net realized and unrealized gains (losses) on investments | Net foreign exchange gains (losses), Net realized and unrealized gains (losses) on investments | Net foreign exchange gains (losses), Net realized and unrealized gains (losses) on investments | Net foreign exchange gains (losses), Net realized and unrealized gains (losses) on investments
Derivative instruments not designated as hedges |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of gain (loss) recognized on derivatives | $ 209,316 | $ 15,042 | $ 359,136 | $ (63,211)
Derivative instruments not designated as hedges | Interest rate futures |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of gain (loss) recognized on derivatives | 37,692 | 2,931 | 103,895 | (52,349)
Derivative instruments not designated as hedges | Foreign currency forward contracts |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of gain (loss) recognized on derivatives | 35,673 | 8,554 | 44,934 | 4,073
Derivative instruments not designated as hedges | Foreign currency forward contracts |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of gain (loss) recognized on derivatives | (1,788) | (3,886) | (2,875) | (19,852)
Derivative instruments not designated as hedges | Credit default swaps |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of gain (loss) recognized on derivatives | 17,239 | (1,725) | 27,638 | (23,029)
Derivative instruments not designated as hedges | Equity futures |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of gain (loss) recognized on derivatives | 87,247 | 10 | 34,700 | 10
Derivative instruments not designated as hedges | Warrants |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of gain (loss) recognized on derivatives | 0 | (1,046) | 0 | (1,046)
Derivative instruments not designated as hedges | Commodity options |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of gain (loss) recognized on derivatives | (2,119) | (1,879) | (2,602) | (2,249)
Derivative instruments not designated as hedges | Commodity futures |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of gain (loss) recognized on derivatives | 35,372 | 12,083 | 153,446 | 31,231
Derivative instruments designated as hedges | Foreign currency forward contracts |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Accumulated other comprehensive income (loss) | $ (3,012) | $ (1,361) | $ (3,377) | $ 1,493

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