v3.25.4
RESERVE FOR LOSSES AND LAE - Schedule of Roll Forward of the Company’s Beginning and Ending Reserve for Losses and LAE (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]      
Gross reserves beginning of period $ 29,889 $ 24,604 $ 22,065
Less reinsurance recoverables on unpaid losses (2,915) (2,098) (2,105)
Net reserves beginning of period 26,975 22,506 19,960
Incurred related to:      
Current year 10,202 9,967 8,432
Prior years, excluding impact from retroactive reinsurance 535 1,337 (5)
Prior years, impact from retroactive reinsurance 122 0 0
Total incurred losses and LAE 10,859 11,305 8,427
Paid related to:      
Current year 1,253 1,258 1,379
Prior years 6,525 5,279 4,731
Total paid losses and LAE 7,778 6,537 6,110
Foreign exchange/translation adjustment 663 (298) 229
Retroactive reinsurance adjustment (122) 0 0
Net reserves end of period 30,597 26,975 22,506
Plus reinsurance recoverables on unpaid losses 3,715 2,915 2,098
Gross reserves end of period 34,312 $ 29,889 $ 24,604
Policyholder benefits and claims incurred, retroactive reinsurance adjustment, consideration paid 1,372    
Policyholder benefits and claims incurred, retroactive reinsurance adjustment, ceded loss reserves 1,250    
Policyholder benefits and claims incurred, retroactive reinsurance adjustment gain (loss), before tax 122    
Reinsurance recoverables, adverse development reinsurance agreement $ 1,253