v3.26.1
Investments - Components of Net Investment Income/Losses (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Net Investment Income [Line Items]        
Net investment income $ 272 $ 236 $ 474 $ 474