v3.25.1
Investments - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Derivative [Line Items]      
Net investment income $ 608 $ 669  
Without Hedge Designation | Credit default swap index - purchased      
Derivative [Line Items]      
Notional amount 2,200   $ 2,000
Derivative liability 1   $ 1
Net investment income $ 3