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Discontinued Operations - Narrative (Details) - Annuity subsidiaries - USD ($) $ in Millions |  | 5 Months Ended
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May 31, 2021 | May 31, 2021
Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Net proceeds from sale of businesses | $ 3,570 |
Gain on sale of discontinued operations, net of tax | $ 656 | $ 656

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