v3.25.1
Investments - Allowance for Credit Losses (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Investments, Debt and Equity Securities [Abstract]      
Accrued interest receivables on available-for-sale fixed maturity securities $ 456 $ 437 $ 442
Allowance for credit losses:      
Beginning balance 45 16  
Available-for-sale securities accounted for as PCD assets 0 0  
Securities sold during the period (realized) 0 0  
Intent to sell or more likely than not will be required to sell the security before recovery of its amortized cost basis 0 1  
Additional increases to the allowance for credit losses on securities that had an allowance recorded in a previous period 2 5  
Ending balance 47 20  
Corporate bonds and other      
Allowance for credit losses:      
Beginning balance 13 4  
Available-for-sale securities accounted for as PCD assets  
Securities sold during the period (realized)  
Intent to sell or more likely than not will be required to sell the security before recovery of its amortized cost basis 1  
Additional increases to the allowance for credit losses on securities that had an allowance recorded in a previous period 2  
Ending balance 15 3  
Asset-backed      
Allowance for credit losses:      
Beginning balance 32 12  
Available-for-sale securities accounted for as PCD assets  
Securities sold during the period (realized)  
Intent to sell or more likely than not will be required to sell the security before recovery of its amortized cost basis  
Additional increases to the allowance for credit losses on securities that had an allowance recorded in a previous period 5  
Ending balance $ 32 $ 17