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INVESTMENTS - Schedule of Net Realized and Unrealized Gains (Losses) on Investments (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2023 | Mar. 31, 2022
Gain (Loss) on Securities [Line Items] |  |
Net realized and unrealized gains (losses) on investments | $ 279,451 | $ (673,017)
Fixed maturity investments trading |  |
Gain (Loss) on Securities [Line Items] |  |
Net realized gains (losses) on fixed maturity investments trading | (104,765) | (121,152)
Net unrealized gains (losses) on fixed maturity investments trading | 312,026 | (464,177)
Net realized and unrealized gains (losses) on fixed maturity investments trading | 207,261 | (585,329)
Derivatives |  |
Gain (Loss) on Securities [Line Items] |  |
Net realized and unrealized gains (losses) on investments-related derivatives | 12,162 | (40,288)
Equity investments |  |
Gain (Loss) on Securities [Line Items] |  |
Net realized gains (losses) on equity investments | (8,738) | (20)
Net unrealized gains (losses) on equity investments | 39,151 | (48,669)
Net realized and unrealized gains (losses) on equity investments | 30,413 | (48,689)
Catastrophe bonds |  |
Gain (Loss) on Securities [Line Items] |  |
Net realized and unrealized gains (losses) on other investments | 24,126 | (8,261)
Other |  |
Gain (Loss) on Securities [Line Items] |  |
Net realized and unrealized gains (losses) on other investments | $ 5,489 | $ 9,550

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- Definition Amount of unrealized and realized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity), investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and investment in debt security measured at fair value with change in fair value recognized in net income (trading). + References No definition available. + Details
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- Definition Amount of unrealized and realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in net income (trading). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 14 -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27476-111563 + Details
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