XML 108 R85.htm IDEA: XBRL DOCUMENT v3.25.0.1
Investments - Gross Realized Gains and Gross Realized Losses from Sales or Maturities of Available for Sale Securities (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]      
Gross Realized Gains $ 81 $ 130 $ 281
Gross Realized Losses 700 865 929
Aggregate fair value of available for sale securities sold 13,700 15,700 10,500
Net Investment Income [Line Items]      
Net realized gains (losses) (619) (735) (648)
Fortitude RE Funds Withheld Assets      
Net Investment Income [Line Items]      
Net realized gains (losses) $ (36) $ (67) $ (83)