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Adoption of ASU 2018-12 (Cumulative Effect Adjustments to Components of Stockholders' Equity) (Details) - USD ($) $ in Millions | Jun. 30, 2023 | Dec. 31, 2022 | Dec. 31, 2020
--- | --- | --- | ---
MRBs | $ 1,548 | $ 2,078 |
Accounting Standards Update 2018-12 [Member] |  |  |
Total | (1,646) |  |
Accounting Standards Update 2018-12 [Member] | Retained Earnings [Member] |  |  |
Total | (6,273) |  |
Accounting Standards Update 2018-12 [Member] | Accumulated Other Comprehensive Income (Loss) [Member] |  |  |
Total | $ 4,627 |  |
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
DAC, VOBA, DSI and DFEL |  |  | $ 2,271
Additional liabilities for other insurance benefits |  |  | 1,197
Liability for future policy benefits and other |  |  | (1,902)
MRBs |  |  | (3,212)
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2018-12 [Member] | Retained Earnings [Member] |  |  |
Liability for future policy benefits and other |  |  | (187)
MRBs |  |  | (6,086)
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2018-12 [Member] | Accumulated Other Comprehensive Income (Loss) [Member] |  |  |
DAC, VOBA, DSI and DFEL |  |  | 2,271
Additional liabilities for other insurance benefits |  |  | 1,197
Liability for future policy benefits and other |  |  | (1,715)
MRBs |  |  | $ 2,874

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