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Separate Account Assets and Liabilities - Separate Account Liabilities (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Separate Account, Liability [Roll Forward] |  |  |  |
Beginning balance | $ 73,962 | [1] | $ 97,491 |
Premiums and deposits | 1,488 |  | 1,744 |
Policy charges | (1,642) |  | (1,685) |
Surrenders and other benefits | (6,472) |  | (6,757) |
Investment return | 9,897 |  | (16,377) |
Net transfer from (to) general account | 67 |  | 133 |
Other charges | 157 |  | (587) |
Ending balance | 77,457 |  | 73,962 | [1]
Cash surrender value | 75,366 |  | 71,747 |
Variable Annuities |  |  |  |
Separate Account, Liability [Roll Forward] |  |  |  |
Beginning balance | 63,223 |  | 82,862 |
Premiums and deposits | 835 |  | 1,067 |
Policy charges | (1,343) |  | (1,396) |
Surrenders and other benefits | (5,378) |  | (4,923) |
Investment return | 8,477 |  | (14,450) |
Net transfer from (to) general account | 25 |  | 63 |
Other charges | 0 |  | 0 |
Ending balance | 65,839 |  | 63,223 |
Cash surrender value | 64,280 |  | 61,461 |
Variable Universal Life |  |  |  |
Separate Account, Liability [Roll Forward] |  |  |  |
Beginning balance | 7,653 |  | 9,376 |
Premiums and deposits | 459 |  | 425 |
Policy charges | (292) |  | (278) |
Surrenders and other benefits | (317) |  | (286) |
Investment return | 1,250 |  | (1,654) |
Net transfer from (to) general account | 42 |  | 70 |
Other charges | 0 |  | 0 |
Ending balance | 8,795 |  | 7,653 |
Cash surrender value | 8,263 |  | 7,200 |
Unitized Pooled Pension Funds |  |  |  |
Separate Account, Liability [Roll Forward] |  |  |  |
Beginning balance | 3,086 |  | 5,253 |
Premiums and deposits | 194 |  | 252 |
Policy charges | (7) |  | (11) |
Surrenders and other benefits | (777) |  | (1,548) |
Investment return | 170 |  | (273) |
Net transfer from (to) general account | 0 |  | 0 |
Other charges | 157 |  | (587) |
Ending balance | 2,823 |  | 3,086 |
Cash surrender value | $ 2,823 |  | $ 3,086 |
[1] | Certain prior period amounts have been restated. See Note 3 for more information.

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- Definition Amount of separate account liability payable to policyholder upon surrender of contract before maturity. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 80 -Name Accounting Standards Codification -Section 55 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480078/944-80-55-18 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 80 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480109/944-80-50-2 + Details
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