v3.25.1
Investments - Net Investment Income (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Net Investment Income [Line Items]    
Investment income, operating $ 632 $ 693
Investment expenses (24) (24)
Net investment income 608 669
Aggregate income (loss) recognized due to the change in fair value of equity and trading portfolio securities held (49) 48
Fixed maturity securities    
Net Investment Income [Line Items]    
Investment income, operating 521 502
Limited partnership investments    
Net Investment Income [Line Items]    
Gain (losses) on investments, before investment expenses 56 54
Short-term investments    
Net Investment Income [Line Items]    
Investment income, operating 19 29
Equity securities    
Net Investment Income [Line Items]    
Gain (losses) on investments, before investment expenses 6 22
Income from trading portfolio    
Net Investment Income [Line Items]    
Gain (losses) on investments, before investment expenses 4 58
Other    
Net Investment Income [Line Items]    
Investment income, operating $ 26 $ 28