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Investments (Net Unrealized Investment Gains (Losses)) (Details) - USD ($) $ in Millions | Mar. 31, 2023 | Dec. 31, 2022
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Components of net unrealized investment gains (losses) included in accumulated other comprehensive loss |  |
Fixed maturity securities | $ (7,003) | $ (8,760)
Derivatives | 598 | 638
Other | (8) | 3
Subtotal | (6,413) | (8,119)
Amounts allocated from: Future policy benefits | 646 | 917
Deferred income tax benefit (expense) | 1,211 | 1,512
Net unrealized investment gains (losses) | $ (4,556) | $ (5,690)

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- Definition This item presents net unrealized investment gains (losses) allocated from insurance liability loss recognition. + References No definition available. + Details
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- Definition This item presents net unrealized investment gains (losses) related to fixed maturity securities that were temporarily impaired. + References No definition available. + Details
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- Definition This item presents net unrealized investment gains (losses) related to deferred income tax benefit (expense). + References No definition available. + Details
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- Definition This item presents net unrealized investment gains (losses) related to derivatives. + References No definition available. + Details
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- Definition This item presents net unrealized investment gains (losses) related to other investments. + References No definition available. + Details
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- Definition This item presents the subtotal of net unrealized investment gains (losses) relating to fixed maturity securities, equity securities, derivatives and other investments. + References No definition available. + Details
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