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Adoption of ASU 2018-12 (Summary of Changes in Future Contract Benefits) (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | ---
LFPB | $ 38,826 | $ 41,425 |
Cumulative Effect, Period of Adoption, Adjustment [Member] |  |  |
LFPB | (2,930) | 738 |
Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | $ 42,828
Accounting Standards Update 2018-12 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] |  |  |
LFPB |  |  | 3,932
Accounting Standards Update 2018-12 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Retained Earnings [Member] |  |  |
LFPB |  |  | 844
Accounting Standards Update 2018-12 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accumulated Other Comprehensive Income (Loss) [Member] |  |  |
LFPB |  |  | 3,088
Payout Annuities [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 2,668
Payout Annuities [Member] | Accounting Standards Update 2018-12 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Retained Earnings [Member] |  |  |
LFPB |  |  | 44
Traditional Life [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 4,426
Ul and Other [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 12,308
Ul and Other [Member] | Accounting Standards Update 2018-12 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Retained Earnings [Member] |  |  |
LFPB |  |  | 174
Group Protection Segment [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 5,939
Others [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 13,922
Others [Member] | Accounting Standards Update 2018-12 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Retained Earnings [Member] |  |  |
LFPB |  |  | 626
Other Segments [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 3,565
As Previously Reported [Member] |  |  |
LFPB | 41,756 | 40,687 |
As Previously Reported [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB | 41,756 | 40,687 | 38,896
As Previously Reported [Member] | Payout Annuities [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 2,314
As Previously Reported [Member] | Traditional Life [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 3,483
As Previously Reported [Member] | Ul and Other [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 13,649
As Previously Reported [Member] | Group Protection Segment [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 5,422
As Previously Reported [Member] | Others [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 10,463
As Previously Reported [Member] | Other Segments [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 3,565
Restatement Adjustments [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB | $ (2,930) | $ 738 |
Impact from Removal of Shadow Balances from AOCI [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | (1,700)
Impact from Removal of Shadow Balances from AOCI [Member] | Payout Annuities [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | (105)
Impact from Removal of Shadow Balances from AOCI [Member] | Ul and Other [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | (1,515)
Impact from Removal of Shadow Balances from AOCI [Member] | Others [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | (80)
Single A Discount Rate Measurement in AOCI [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 4,788
Single A Discount Rate Measurement in AOCI [Member] | Payout Annuities [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 415
Single A Discount Rate Measurement in AOCI [Member] | Traditional Life [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 943
Single A Discount Rate Measurement in AOCI [Member] | Group Protection Segment [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 517
Single A Discount Rate Measurement in AOCI [Member] | Others [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 2,913
Swiss Re [Member] | Others [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 3,500
Swiss Re [Member] | As Previously Reported [Member] | Others [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 2,000
Protective [Member] | Others [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 7,400
Protective [Member] | As Previously Reported [Member] | Others [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | $ 6,300

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