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Discontinued Operations - Details of the results of the Annuity subsidiaries sold (Details) - USD ($) $ in Millions |  | 5 Months Ended | 12 Months Ended
--- | --- | --- | ---
May 31, 2021 | May 31, 2021 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Net earnings (loss) from discontinued operations |  | $ 914 | $ 914 | $ 407 | $ 378
Annuity subsidiaries |  |  |  |  |
Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Gain on sale of discontinued operations, net of tax | $ 656 |  |  |  |
Annuity subsidiaries | Net earnings (loss) from discontinued operations |  |  |  |  |
Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Net investment income |  | 746 |  | 1,670 | 1,774
Realized gains (losses) on securities |  | 112 |  | 365 | 132
Other income |  | 52 |  | 123 | 137
Total revenues |  | 910 |  | 2,158 | 2,043
Annuity benefits |  | 377 |  | 1,192 | 1,151
Annuity and supplemental insurance acquisition expenses |  | 136 |  | 306 | 253
Other expenses |  | 73 |  | 151 | 165
Total costs and expenses |  | 586 |  | 1,649 | 1,569
Earnings (loss) before income taxes from discontinued operations |  | 324 |  | 509 | 474
Provision (credit) for income taxes on operations |  | 66 |  | 102 | 96
Net earnings (loss) from operations, net of tax |  | 258 |  | 407 | 378
Gain on sale of discontinued operations, net of tax |  | $ 656 |  | $ 0 | $ 0

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