v3.25.2
Investments (Allowance on available-for-sale securities with credit impairments and PCD assets activity) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Allowance for credit losses:        
Balance, beginning of period $ 47 $ 20 $ 45 $ 16
Additions to the allowance for credit losses:        
Securities for which credit losses were not previously recorded 3 0 3 0
Available-for-sale securities accounted for as PCD assets 0 0 0 0
Reductions to the allowance for credit losses:        
Securities disposed during the period (realized) 6 4 6 4
Intent to sell or more likely than not will be required to sell the security before recovery of its amortized cost basis 0 0 0 1
Write-offs charged against the allowance 0 0 0 0
Recoveries of amounts previously written off 0 0 0 0
Additional increases or (decreases) to the allowance for credit losses on securities that had an allowance recorded in a previous period 7 1 9 6
Balance, end of period 51 17 51 17
Corporate and other bonds        
Allowance for credit losses:        
Balance, beginning of period 15 3 13 4
Additions to the allowance for credit losses:        
Securities for which credit losses were not previously recorded 3 0 3 0
Available-for-sale securities accounted for as PCD assets 0 0 0 0
Reductions to the allowance for credit losses:        
Securities disposed during the period (realized) 6 3 6 3
Intent to sell or more likely than not will be required to sell the security before recovery of its amortized cost basis 0 0 0 1
Write-offs charged against the allowance 0 0 0 0
Recoveries of amounts previously written off 0 0 0 0
Additional increases or (decreases) to the allowance for credit losses on securities that had an allowance recorded in a previous period 2 0 4 0
Balance, end of period 14 0 14 0
Asset-backed        
Allowance for credit losses:        
Balance, beginning of period 32 17 32 12
Additions to the allowance for credit losses:        
Securities for which credit losses were not previously recorded 0 0 0 0
Available-for-sale securities accounted for as PCD assets 0 0 0 0
Reductions to the allowance for credit losses:        
Securities disposed during the period (realized) 0 1 0 1
Intent to sell or more likely than not will be required to sell the security before recovery of its amortized cost basis 0 0 0 0
Write-offs charged against the allowance 0 0 0 0
Recoveries of amounts previously written off 0 0 0 0
Additional increases or (decreases) to the allowance for credit losses on securities that had an allowance recorded in a previous period 5 1 5 6
Balance, end of period $ 37 $ 17 $ 37 $ 17