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INVESTMENTS - Schedule of Contractual Maturities of Fixed Maturity Investments (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Amortized Cost |  |
Due in less than one year | $ 1,385,679 | $ 1,374,089
Due after one through five years | 12,292,015 | 12,139,153
Due after five through ten years | 6,079,871 | 6,339,563
Due after ten years | 376,444 | 387,413
Amortized Cost | 23,266,328 | 23,750,540
Fair Value |  |
Due in less than one year | 1,383,945 | 1,373,838
Due after one through five years | 12,368,118 | 12,131,114
Due after five through ten years | 6,108,091 | 6,246,506
Due after ten years | 353,082 | 355,156
Fixed maturity investments trading | 23,310,208 | 23,562,514
Mortgage-backed |  |
Amortized Cost |  |
Amortized Cost | 1,737,576 | 2,094,190
Fair Value |  |
Fixed maturity investments trading | 1,700,794 | 2,033,507
Asset-backed |  |
Amortized Cost |  |
Amortized Cost | 1,394,743 | 1,416,132
Fair Value |  |
Fixed maturity investments trading | $ 1,396,178 | $ 1,422,393

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