v3.23.1
Investments - Rollforward of changes in allowance for credit losses on available for sale fixed maturity securities by major investment category (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]      
Balance, beginning of period $ 78 $ 131 $ 5
Additions:      
Securities for which allowance for credit losses were not previously recorded 175 49 239
Purchases of available for sale debt securities accounted for as purchased credit deteriorated assets 0 0 25
Accretion of available for sale debt securities accounted for as purchased credit deteriorated assets 0 0 1
Reductions:      
Securities sold during the period (51) (23) (24)
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 (29) (60) (46)
Write-offs charged against the allowance (25) (19) (69)
Balance, end of period 148 78 131
Structured      
Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]      
Balance, beginning of period 8 14 5
Additions:      
Securities for which allowance for credit losses were not previously recorded 36 3 28
Purchases of available for sale debt securities accounted for as purchased credit deteriorated assets 0 0 25
Accretion of available for sale debt securities accounted for as purchased credit deteriorated assets 0 0 1
Reductions:      
Securities sold during the period (3) (4) (3)
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 (14) (5) (42)
Write-offs charged against the allowance 0 0 0
Balance, end of period 27 8 14
Non-Structured      
Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]      
Balance, beginning of period 70 117 0
Additions:      
Securities for which allowance for credit losses were not previously recorded 139 46 211
Purchases of available for sale debt securities accounted for as purchased credit deteriorated assets 0 0 0
Accretion of available for sale debt securities accounted for as purchased credit deteriorated assets 0 0 0
Reductions:      
Securities sold during the period (48) (19) (21)
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 (15) (55) (4)
Write-offs charged against the allowance (25) (19) (69)
Balance, end of period $ 121 $ 70 $ 117