v3.26.1
Investments - Schedule of Investment Gains (Losses) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Other investments:        
Net losses on investments $ (36) $ (131) $ (115) $ (593)
Fixed maturity securities:        
Fixed maturity securities:        
Gross realized gains from sales 30 22 63 49
Gross realized losses from sales (31) (62) (70) (144)
Impairment losses recognized in income 0 (9) (37) (10)
Net realized losses from sales of fixed maturity securities (1) (49) (44) (105)
Equity securities:        
Equity securities:        
Unrealized gains recognized on equity securities still held at the end of the period 0 0 (2) (6)
Net realized losses recognized on equity securities sold during the period 0 (1) (1) (2)
Net losses on equity securities 0 (1) (3) (8)
Other investments:        
Other investments:        
Gross gains 26 8 34 13
Gross losses (1) (6) (6) (99)
Other realized losses recognized in income (60) (83) (96) (394)
Net losses on other investments $ (35) $ (81) $ (68) $ (480)