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Adoption of ASU 2018-12 (Summary of Changes in Future Contract Benefits) (Details) - USD ($) $ in Millions | Jun. 30, 2023 | Dec. 31, 2022 | Dec. 31, 2020
--- | --- | --- | ---
LFPB |  | $ 38,826 |
Accounting Standards Update 2018-12 [Member] |  |  |
LFPB | $ (3,932) |  | $ 42,828
Accounting Standards Update 2018-12 [Member] | Retained Earnings [Member] |  |  |
LFPB | $ (844) |  |
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2018-12 [Member] | Retained Earnings [Member] |  |  |
LFPB |  |  | 844
Other Operations [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 3,565
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] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2018-12 [Member] | Retained Earnings [Member] |  |  |
LFPB |  |  | 174
Group Protection [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 5,939
Other Operations [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 13,922
Other Operations [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2018-12 [Member] | Retained Earnings [Member] |  |  |
LFPB |  |  | 626
Payout Annuities [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 2,668
Payout Annuities [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2018-12 [Member] | Retained Earnings [Member] |  |  |
LFPB |  |  | 44
As Previously Reported [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  | $ 41,756 | 38,896
As Previously Reported [Member] | Other Operations [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 3,565
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 [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 5,422
As Previously Reported [Member] | Other Operations [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 10,463
As Previously Reported [Member] | Payout Annuities [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 2,314
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] | UL and Other [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | (1,515)
Impact from Removal of Shadow Balances from AOCI [Member] | Other Operations [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | (80)
Impact from Removal of Shadow Balances from AOCI [Member] | Payout Annuities [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | (105)
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] | Traditional Life [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 943
Single A Discount Rate Measurement in AOCI [Member] | Group Protection [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 517
Single A Discount Rate Measurement in AOCI [Member] | Other Operations [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 2,913
Single A Discount Rate Measurement in AOCI [Member] | Payout Annuities [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 415
Protective [Member] | Other Operations [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 7,400
Protective [Member] | As Previously Reported [Member] | Other Operations [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 6,300
Swiss Re [Member] | Other Operations [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | 3,500
Swiss Re [Member] | As Previously Reported [Member] | Other Operations [Member] | Accounting Standards Update 2018-12 [Member] |  |  |
LFPB |  |  | $ 2,000

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