v3.26.1
Investments (Credit Losses Recognized In Earnings on Fixed Maturity Securities Held by the Company) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]        
Balance, beginning of period $ 249 $ 251 $ 183 $ 331
Additions to allowance for credit losses not previously recorded 20 1 76 18
Reductions for securities sold during the period (13) (6) (15) (12)
Additions (reductions) on securities with previous allowance 32 28 67 31
Write-downs charged against the allowance (92) (50) (115) (144)
Balance, ending of period 196 224 196 224
U.S. Treasury securities and obligations of U.S. government authorities and agencies        
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]        
Balance, beginning of period 0 0 0 0
Additions to allowance for credit losses not previously recorded 0 0 0 0
Reductions for securities sold during the period 0 0 0 0
Additions (reductions) on securities with previous allowance 0 0 0 0
Write-downs charged against the allowance 0 0 0 0
Balance, ending of period 0 0 0 0
Foreign government securities        
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]        
Balance, beginning of period 0 0 0 0
Additions to allowance for credit losses not previously recorded 0 0 0 0
Reductions for securities sold during the period 0 0 0 0
Additions (reductions) on securities with previous allowance 0 0 0 0
Write-downs charged against the allowance 0 0 0 0
Balance, ending of period 0 0 0 0
U.S. and Foreign Corporate Securities        
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]        
Balance, beginning of period 247 250 182 331
Additions to allowance for credit losses not previously recorded 20 1 75 17
Reductions for securities sold during the period (13) (6) (15) (12)
Additions (reductions) on securities with previous allowance 33 28 68 31
Write-downs charged against the allowance (92) (50) (115) (144)
Balance, ending of period 195 223 195 223
Asset-backed securities        
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]        
Balance, beginning of period 2 1 1 0
Additions to allowance for credit losses not previously recorded 0 0 1 1
Reductions for securities sold during the period 0 0 0 0
Additions (reductions) on securities with previous allowance (1) 0 (1) 0
Write-downs charged against the allowance 0 0 0 0
Balance, ending of period 1 1 1 1
Commercial mortgage-backed securities        
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]        
Balance, beginning of period 0 0 0 0
Additions to allowance for credit losses not previously recorded 0 0 0 0
Reductions for securities sold during the period 0 0 0 0
Additions (reductions) on securities with previous allowance 0 0 0 0
Write-downs charged against the allowance 0 0 0 0
Balance, ending of period 0 0 0 0
Residential mortgage-backed securities        
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]        
Balance, beginning of period 0 0 0 0
Additions to allowance for credit losses not previously recorded 0 0 0 0
Reductions for securities sold during the period 0 0 0 0
Additions (reductions) on securities with previous allowance 0 0 0 0
Write-downs charged against the allowance 0 0 0 0
Balance, ending of period $ 0 $ 0 $ 0 $ 0