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INVESTMENTS - Schedule of Contractual Maturities of Fixed Maturity Investments (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Amortized Cost |  |
Due in less than one year | $ 1,374,089 | $ 587,720
Due after one through five years | 12,139,153 | 11,439,510
Due after five through ten years | 6,339,563 | 5,182,667
Due after ten years | 387,413 | 307,392
Amortized cost | 23,750,540 | 20,872,450
Debt Securities, Trading, and Equity Securities, FV-NI [Abstract] |  |
Due in less than one year | 1,373,838 | 582,519
Due after one through five years | 12,131,114 | 11,468,263
Due after five through ten years | 6,246,506 | 5,188,716
Due after ten years | 355,156 | 292,473
Fixed maturity investments trading | 23,562,514 | 20,877,108
Mortgage-backed |  |
Amortized Cost |  |
Amortized cost | 2,094,190 | 1,864,520
Debt Securities, Trading, and Equity Securities, FV-NI [Abstract] |  |
Fixed maturity investments trading | 2,033,507 | 1,853,442
Asset-backed |  |
Amortized Cost |  |
Amortized cost | 1,416,132 | 1,490,641
Debt Securities, Trading, and Equity Securities, FV-NI [Abstract] |  |
Fixed maturity investments trading | $ 1,422,393 | $ 1,491,695

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- Definition This item represents debt securities, at cost, net of adjustments including accretion, amortization and collection of cash, if any, which are expected to mature within one year of the balance sheet date and are categorized as trading securities. + References No definition available. + Details
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- Definition This item represents debt securities, at cost, net of adjustments including accretion, amortization and collection of cash, if any, which are expected to mature after ten years of the balance sheet date and are categorized as trading securities. + References No definition available. + Details
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