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Market Risk Benefits (Tables)
 3 Months Ended
Mar. 31, 2023
Accounting Standards Update 2018-12 [Abstract]  
Balances and Changes in Market Risk Benefit
The following table presents the balances of and changes in MRBs associated with FIAs and fixed rate annuities for the three months ended March 31, 2023 and the years ended December 31, 2022 and December 31, 2021:
March 31, 2023December 31, 2022December 31, 2021
FIAFixed rate annuitiesFIAFixed rate annuitiesFIAFixed rate annuities
(Dollars in millions)
Balance, beginning of period$164 $1 $426 $2 $478 $1 
Balance, beginning of period, before effect of changes in the instrument-specific credit risk$104 $1 $280 $1 $320 $1 
Issuances and benefit payments(4)— (21)— (9)— 
Attributed fees collected and interest accrual30 — 107 1 99 1 
Actual policyholder behavior different from expected 7 — 43 — (22)— 
Changes in assumptions and other1 — (76)— — — 
Effects of market related movements26 — (231)(1)(108)— 
Balance, end of period, before effect of changes in the instrument-specific credit risk$164 $1 $102 $1 $280 $2 
Effect of changes in the instrument-specific credit risk53 — 62 — 146 — 
Balance, end of period$217 $1 $164 $1 $426 $2 
Weighted-average attained age of policyholders weighted by total AV (years)68.4972.6468.5972.8868.9573.10
Weighted-average attained age of policyholders weighted by Unlocked MRB (years)78.3377.7380.8477.5668.7773.72
Net amount at risk$1,031 $3 $952 $3 $1,304 $4 
The following table reconciles MRBs by amounts in an asset position and amounts in a liability position to the MRB amounts in the accompanying unaudited Condensed Consolidated Balance Sheets:
March 31, 2023December 31, 2022December 31, 2021
AssetLiabilityNetAssetLiabilityNetAssetLiabilityNet
(In millions)
FIA$106 $323 $217 $117 $281 $164 $41 $467 $426 
Fixed rate annuities— 1 1 — 1 1 — 2 2 
Total$106 $324 $218 $117 $282 $165 $41 $469 $428