v3.26.1
Investments (Credit Losses Recognized In Earnings on Fixed Maturity Securities Held by the Company) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]    
Balance, beginning of period $ 183 $ 331
Additions to allowance for credit losses not previously recorded 56 17
Reductions for securities sold during the period (2) (6)
Additions (reductions) on securities with previous allowance 35 3
Write-downs charged against the allowance (23) (94)
Balance, ending of period 249 251
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
Additions to allowance for credit losses not previously recorded 0 0
Reductions for securities sold during the period 0 0
Additions (reductions) on securities with previous allowance 0 0
Write-downs charged against the allowance 0 0
Balance, ending of period 0 0
Foreign government securities    
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]    
Balance, beginning of period 0 0
Additions to allowance for credit losses not previously recorded 0 0
Reductions for securities sold during the period 0 0
Additions (reductions) on securities with previous allowance 0 0
Write-downs charged against the allowance 0 0
Balance, ending of period 0 0
U.S. and Foreign Corporate Securities    
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]    
Balance, beginning of period 182 331
Additions to allowance for credit losses not previously recorded 55 16
Reductions for securities sold during the period (2) (6)
Additions (reductions) on securities with previous allowance 35 3
Write-downs charged against the allowance (23) (94)
Balance, ending of period 247 250
Asset-backed securities    
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]    
Balance, beginning of period 1 0
Additions to allowance for credit losses not previously recorded 1 1
Reductions for securities sold during the period 0 0
Additions (reductions) on securities with previous allowance 0 0
Write-downs charged against the allowance 0 0
Balance, ending of period 2 1
Commercial mortgage-backed securities    
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]    
Balance, beginning of period 0 0
Additions to allowance for credit losses not previously recorded 0 0
Reductions for securities sold during the period 0 0
Additions (reductions) on securities with previous allowance 0 0
Write-downs charged against the allowance 0 0
Balance, ending of period 0 0
Residential mortgage-backed securities    
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]    
Balance, beginning of period 0 0
Additions to allowance for credit losses not previously recorded 0 0
Reductions for securities sold during the period 0 0
Additions (reductions) on securities with previous allowance 0 0
Write-downs charged against the allowance 0 0
Balance, ending of period $ 0 $ 0