v3.26.1
COLLATERALIZED REINSURANCE, TRUST AGREEMENTS AND OTHER RESTRICTED ASSETS - Schedule of Collateralized Reinsurance Agreements (Details) - Kilimanjaro Re Limited
$ in Millions
6 Months Ended
Jun. 30, 2026
USD ($)
Effects of Reinsurance [Line Items]  
Limit $ 1,830
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
Reinsurance Contract [Axis]: Series 2026-1 Class B-1  
Effects of Reinsurance [Line Items]  
Limit 70
Reinsurance Contract [Axis]: Series 2026-1 Class C-1  
Effects of Reinsurance [Line Items]  
Limit 60
Reinsurance Contract [Axis]: Series 2026-1 Class D-1  
Effects of Reinsurance [Line Items]  
Limit 220
Reinsurance Contract [Axis]: Series 2026-2 Class A-2  
Effects of Reinsurance [Line Items]  
Limit 50
Reinsurance Contract [Axis]: Series 2026-2 Class B-2  
Effects of Reinsurance [Line Items]  
Limit 60
Reinsurance Contract [Axis]: Series 2026-2 Class D-2  
Effects of Reinsurance [Line Items]  
Limit $ 170