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Equity (Net Unrealized Investment Gains (Losses) in AOCI on AFS Fixed Maturity Securities with OTTI, Allowance for Credit Losses and All Other Investments) (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) |  |  |  |
Ending balance |  | (6,504) | [2] | $ (3,806) | [1] |
Net Unrealized Investment Gain (Loss) on AFS Fixed Maturity Securities With AllowancePre Tax |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |  |  |
Beginning balance |  | (45) |  | 23 |  | $ (25)
Net investment gains (losses) on investments arising during the period |  | 15 |  | (90) |  | 41
Reclassification adjustment for (gains) losses included in net income |  | (3) |  | 23 |  | 10
Reclassification due to allowance for credit losses recorded during the period |  |  |  |  |  | (3)
Reclassification due to allowance for credit losses recorded during the period |  | (39) |  | (1) |  |
Ending balance |  | (72) |  | (45) |  | 23
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)
Net investment gains (losses) on investments arising during the period |  | 6,595 |  | (65,938) |  | (15,522)
Reclassification adjustment for (gains) losses included in net income |  | 1,146 |  | 563 |  | (2,496)
Reclassification due to allowance for credit losses recorded during the period |  |  |  |  |  | 3
Reclassification due to allowance for credit losses recorded during the period |  | 39 |  | 1 |  |
Ending balance |  | (17,179) |  | (24,959) |  | 40,415
Reinsurance Recoverables |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |  |  |
Beginning balance |  | (703) |  | 417 |  | (1,229)
Cumulative effect of adoption of ASU 2018-12 |  |  |  |  |  | 1,809
Impact of net unrealized investment (gains) losses |  | 219 |  | (1,120) |  | (163)
Ending balance |  | (484) |  | (703) |  | 417
Future Policy Benefits, Policyholders’ Account Balances and Reinsurance Payables |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 1,946 |  | (1,921) |  | (6,588)
Cumulative effect of adoption of ASU 2018-12 |  |  |  |  |  | 3,725
Impact of net unrealized investment (gains) losses |  | (640) |  | 3,867 |  | 942
Ending balance |  | 1,306 |  | 1,946 |  | (1,921)
Policyholders' Dividends |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 3,194 |  | (3,657) |  | (5,892)
Impact of net unrealized investment (gains) losses |  | (1,113) |  | 6,851 |  | 2,235
Ending balance |  | 2,081 |  | 3,194 |  | (3,657)
Income Tax Benefit (Expense) |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 4,373 |  | (8,637) |  | (10,643)
Cumulative effect of adoption of ASU 2018-12 |  |  |  |  |  | (1,354)
Net investment gains (losses) on investments arising during the period |  | (1,327) |  | 15,164 |  | 3,441
Reclassification adjustment for (gains) losses included in net income |  | (229) |  | (135) |  | 553
Reclassification due to allowance for credit losses recorded during the period |  |  |  |  |  | 0
Impact of net unrealized investment (gains) losses |  | 318 |  | (2,019) |  | (634)
Reclassification due to allowance for credit losses recorded during the period |  | 0 |  | 0 |  |
Ending balance |  | 3,135 |  | 4,373 |  | (8,637)
Accumulated Other Comprehensive Income (Loss) Related to 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
Net investment gains (losses) on investments arising during the period |  | 5,283 |  | (50,864) |  | (12,040)
Reclassification adjustment for (gains) losses included in net income |  | 914 |  | 451 |  | (1,933)
Reclassification due to allowance for credit losses recorded during the period |  |  |  |  |  | 0
Impact of net unrealized investment (gains) losses |  | (1,216) |  | 7,579 |  | 2,380
Reclassification due to allowance for credit losses recorded during the period |  | 0 |  | 0 |  |
Ending balance |  | $ (11,213) |  | $ (16,194) |  | $ 26,640
[1] | Prior period amounts adjusted for the implementation of ASU 2018-12: Targeted Improvements to the Accounting for Long-Duration Contracts.
[2] | See Note 24 for additional information regarding related party transactions.

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