v3.25.1
Fair Value Measurements - Insurance Contracts (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Net    
Beginning fair value $ 814 $ 946
Incurred losses and LAE:    
Increase (reduction) in estimates of ultimate losses (3) 3
Reduction in provisions for ULAE (1) (2)
Total change in fair value 5 (4)
Total incurred losses and LAE 1 (3)
Paid losses (32) (33)
Effect of exchange rate movements 19 (19)
Ending fair value 802 891
Reinsurance balances recoverable    
Reinsurance balances recoverable    
Beginning fair value 183 217
Incurred losses and LAE:    
Increase (reduction) in estimates of ultimate losses 1 (9)
Reduction in provisions for ULAE 0 0
Total change in fair value 1 (1)
Total incurred losses and LAE 2 (10)
Paid losses 6 (6)
Effect of exchange rate movements 3 6
Ending fair value 194 207
Liability for losses and LAE    
Liability for losses and LAE    
Beginning fair value 997 1,163
Incurred losses and LAE:    
Increase (reduction) in estimates of ultimate losses (2) (6)
Reduction in provisions for ULAE (1) (2)
Total change in fair value 6 (5)
Total incurred losses and LAE 3 (13)
Paid losses (26) (39)
Effect of exchange rate movements 22 (13)
Ending fair value 996 1,098
Average payout    
Incurred losses and LAE:    
Total change in fair value 8 8
Average payout | Reinsurance balances recoverable    
Incurred losses and LAE:    
Total change in fair value 1 2
Average payout | Liability for losses and LAE    
Incurred losses and LAE:    
Total change in fair value 9 10
Corporate bond yield    
Incurred losses and LAE:    
Total change in fair value (3) (13)
Corporate bond yield | Reinsurance balances recoverable    
Incurred losses and LAE:    
Total change in fair value 0 (3)
Corporate bond yield | Liability for losses and LAE    
Incurred losses and LAE:    
Total change in fair value (3) (16)
Risk cost of capital    
Incurred losses and LAE:    
Total change in fair value 0 1
Risk cost of capital | Reinsurance balances recoverable    
Incurred losses and LAE:    
Total change in fair value 0 0
Risk cost of capital | Liability for losses and LAE    
Incurred losses and LAE:    
Total change in fair value $ 0 $ 1