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COLLATERALIZED REINSURANCE, TRUST AGREEMENTS AND OTHER RESTRICTED ASSETS - Schedule of Collateralized Reinsurance Agreements (Details) - Kilimanjaro Re Limited $ in Millions | 6 Months Ended
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Jun. 30, 2025 USD ($)
Effects of Reinsurance [Line Items] |
Limit | $ 1,530
Reinsurance Contract [Axis]: Series 2021-1 Class A-2 |
Effects of Reinsurance [Line Items] |
Limit | 150
Reinsurance Contract [Axis]: Series 2021-1 Class B-2 |
Effects of Reinsurance [Line Items] |
Limit | 90
Reinsurance Contract [Axis]: Series 2021-1 Class C-2 |
Effects of Reinsurance [Line Items] |
Limit | 90
Reinsurance Contract [Axis]: Series 2024-1 Class A |
Effects of Reinsurance [Line Items] |
Limit | 75
Reinsurance Contract [Axis]: Series 2024-1 Class B |
Effects of Reinsurance [Line Items] |
Limit | 125
Reinsurance Contract [Axis]: Series 2025-1 Class A-1 |
Effects of Reinsurance [Line Items] |
Limit | 105
Reinsurance Contract [Axis]: Series 2025-1 Class B-1 |
Effects of Reinsurance [Line Items] |
Limit | 120
Reinsurance Contract [Axis]: Series 2025-1 Class C-1 |
Effects of Reinsurance [Line Items] |
Limit | 170
Reinsurance Contract [Axis]: Series 2025-1 Class D-1 |
Effects of Reinsurance [Line Items] |
Limit | 105
Reinsurance Contract [Axis]: Series 2025-2 Class A-2 |
Effects of Reinsurance [Line Items] |
Limit | 105
Reinsurance Contract [Axis]: Series 2025-2 Class B-2 |
Effects of Reinsurance [Line Items] |
Limit | 120
Reinsurance Contract [Axis]: Series 2025-2 Class C-2 |
Effects of Reinsurance [Line Items] |
Limit | 170
Reinsurance Contract [Axis]: Series 2025-2 Class D-2 |
Effects of Reinsurance [Line Items] |
Limit | $ 105

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