v3.24.1.u1
Investments - Rollforward of changes in allowance for credit losses on available for sale fixed maturity securities by major investment category (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]    
Balance, beginning of period $ 128 $ 148
Additions:    
Securities for which allowance for credit losses were not previously recorded 30 14
Reductions:    
Securities sold during the period (24) (19)
Additional net increases or decreases to the allowance for credit losses on securities that had an allowance recorded in a previous period, for which there was no intent to sell before recovery, amortized cost basis 38 3
Write-offs charged against the allowance (76) (50)
Other 1 0
Balance, end of period 97 96
Structured    
Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]    
Balance, beginning of period 55 27
Additions:    
Securities for which allowance for credit losses were not previously recorded 13 2
Reductions:    
Securities sold during the period (15) (2)
Additional net increases or decreases to the allowance for credit losses on securities that had an allowance recorded in a previous period, for which there was no intent to sell before recovery, amortized cost basis 22 0
Write-offs charged against the allowance (39) 0
Other 0 0
Balance, end of period 36 27
Non-Structured    
Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]    
Balance, beginning of period 73 121
Additions:    
Securities for which allowance for credit losses were not previously recorded 17 12
Reductions:    
Securities sold during the period (9) (17)
Additional net increases or decreases to the allowance for credit losses on securities that had an allowance recorded in a previous period, for which there was no intent to sell before recovery, amortized cost basis 16 3
Write-offs charged against the allowance (37) (50)
Other 1 0
Balance, end of period $ 61 $ 69