v3.26.3
Investments - Allowance for Credit Losses (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Investments, Debt and Equity Securities [Abstract]          
Accrued interest receivables on available-for-sale fixed maturity securities $ 497 $ 469 $ 497 $ 469 $ 470
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]          
Beginning balance 63 51 69 45  
Securities for which credit losses were not previously recorded   3 3 6  
Available-for-sale securities accounted for as PCD assets   4 1 4  
Securities disposed during the period (realized)     16 6  
Intent to sell or more likely than not will be required to sell the security before recovery of its amortized cost basis 1   1    
Additional increases to the allowance for credit losses on securities that had an allowance recorded in a previous period 3 3 9 12  
Ending balance 65 61 65 61  
Corporate bonds and other          
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]          
Beginning balance 16 14 28 13  
Securities for which credit losses were not previously recorded   3 3  
Available-for-sale securities accounted for as PCD assets   4 1 4  
Securities disposed during the period (realized)     16 6  
Intent to sell or more likely than not will be required to sell the security before recovery of its amortized cost basis 1   1    
Additional increases to the allowance for credit losses on securities that had an allowance recorded in a previous period 2 3 2 7  
Ending balance 17 21 17 21  
Asset-backed          
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]          
Beginning balance 47 37 41 32  
Securities for which credit losses were not previously recorded   3 3  
Available-for-sale securities accounted for as PCD assets    
Securities disposed 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 1 7 5  
Ending balance $ 48 $ 40 $ 48 $ 40