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Equity (Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |  |  |  |
Beginning balance | [1] | $ (3,806) |  |  |  |  |
Income tax benefit (expense) |  | 837 |  | $ (2,555) | [2] | $ (1,151) | [2]
Ending balance |  | (6,504) | [3] | (3,806) | [1] |  |
Foreign Currency Translation Adjustment |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |  |  |  |
Beginning balance |  | (2,274) |  | (1,107) |  | 52 |
Cumulative effect of adoption of ASU 2018-12 |  |  |  |  |  | 0 |
Change in OCI before reclassification |  | (246) |  | (1,145) |  | (1,021) |
Amounts reclassified from AOCI |  | (18) |  | 15 |  | (65) |
Income tax benefit (expense) |  | (148) |  | (37) |  | (73) |
Ending balance |  | (2,686) |  | (2,274) |  | (1,107) |
Net Unrealized Investment Gains (Losses) |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |  |  |  |
Beginning balance |  | (16,194) |  | 26,640 |  | 34,065 |
Cumulative effect of adoption of ASU 2018-12 |  |  |  |  |  | 4,168 |
Change in OCI before reclassification |  | 5,076 |  | (56,430) |  | (12,467) |
Amounts reclassified from AOCI |  | 1,143 |  | 586 |  | (2,486) |
Income tax benefit (expense) |  | (1,238) |  | 13,010 |  | 3,360 |
Ending balance |  | (11,213) |  | (16,194) |  | 26,640 |
Interest rate remeasurement of Liability for Future Policy Benefits |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |  |  |  |
Beginning balance |  | 15,242 |  | (33,220) |  | 0 |
Cumulative effect of adoption of ASU 2018-12 |  |  |  |  |  | (47,818) |
Change in OCI before reclassification |  | (8,770) |  | 63,643 |  | 18,941 |
Amounts reclassified from AOCI |  | 0 |  | 0 |  | 0 |
Income tax benefit (expense) |  | 2,075 |  | (15,181) |  | (4,343) |
Ending balance |  | 8,547 |  | 15,242 |  | (33,220) |
Gains (losses) from Changes in Non-performance Risk on Market Risk Benefits |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |  |  |  |
Beginning balance |  | 1,448 |  | 707 |  | 0 |
Cumulative effect of adoption of ASU 2018-12 |  |  |  |  |  | 1,254 |
Change in OCI before reclassification |  | (693) |  | 938 |  | (693) |
Amounts reclassified from AOCI |  | 0 |  | 0 |  | 0 |
Income tax benefit (expense) |  | 145 |  | (197) |  | 146 |
Ending balance |  | 900 |  | 1,448 |  | 707 |
Pension and Postretirement Unrecognized Net Periodic Benefit (Cost) |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |  |  |  |
Beginning balance |  | (2,028) |  | (2,513) |  | (3,379) |
Cumulative effect of adoption of ASU 2018-12 |  |  |  |  |  | 0 |
Change in OCI before reclassification |  | (98) |  | 478 |  | 843 |
Amounts reclassified from AOCI |  | 71 |  | 157 |  | 264 |
Income tax benefit (expense) |  | 3 |  | (150) |  | (241) |
Ending balance |  | (2,052) |  | (2,028) |  | (2,513) |
Accumulated Other Comprehensive Income (Loss) |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |  |  |  |
Beginning balance |  | (3,806) |  | (9,493) |  | 30,738 |
Cumulative effect of adoption of ASU 2018-12 |  |  |  |  |  | (42,396) |
Change in OCI before reclassification |  | (4,731) |  | 7,484 |  | 5,603 |
Amounts reclassified from AOCI |  | 1,196 |  | 758 |  | (2,287) |
Income tax benefit (expense) |  | 837 |  | (2,555) |  | (1,151) |
Ending balance |  | (6,504) |  | (3,806) |  | (9,493) |
Net unrealized gains (losses) on all other investments |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |  |  |  |
Beginning balance |  | (24,959) |  | 40,415 |  | 58,442 |
Cumulative effect of adoption of ASU 2018-12 |  |  |  |  |  | (12) |
Ending balance |  | (17,179) |  | (24,959) |  | 40,415 |
Cash flow hedges | Net Unrealized Investment Gains (Losses) |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |  |  |  |
Beginning balance |  | 2,616 |  | 1,019 |  |  |
Ending balance |  | 869 |  | 2,616 |  | 1,019 |
Fair value hedges | Net Unrealized Investment Gains (Losses) |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |  |  |  |
Beginning balance |  | (54) |  | (35) |  |  |
Ending balance |  | $ (60) |  | $ (54) |  | $ (35) |
[1] | Prior period amounts adjusted for the implementation of ASU 2018-12: Targeted Improvements to the Accounting for Long-Duration Contracts.
[2] | Prior period amounts adjusted for the implementation of ASU 2018-12: Targeted Improvements to the Accounting for Long-Duration Contracts.
[3] | See Note 24 for additional information regarding related party transactions.

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