v3.25.4
RESERVE FOR LOSSES AND LAE - Schedule of Reconciliation of the Net Incurred and Paid Claims Development (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Short-Duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Total reinsurance recoverable on unpaid claims $ 4,968 $ 2,915    
Unallocated claims adjustment expenses 360      
Other 1,439      
Total expenses 1,799      
Total gross liability for unpaid claims and claim adjustment expense 34,312 $ 29,889 $ 24,604 $ 22,065
Reinsurance recoverables, adverse development reinsurance agreement 1,253      
Reinsurance And Insurance Segments        
Short-Duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance 29,052      
Total reinsurance recoverable on unpaid claims 3,461      
Reinsurance | Casualty Insurance        
Short-Duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance 14,048      
Total reinsurance recoverable on unpaid claims 152      
Reinsurance | Property Insurance        
Short-Duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance 7,423      
Total reinsurance recoverable on unpaid claims 901      
Insurance | Casualty Insurance        
Short-Duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance 6,597      
Total reinsurance recoverable on unpaid claims 2,094      
Insurance | Property Insurance        
Short-Duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]        
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance 983      
Total reinsurance recoverable on unpaid claims $ 314