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Investments (Net Unrealized Investment Gains Losses) (Details) - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
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Components of net unrealized investment gains (losses) included in accumulated other comprehensive income |  |
Fixed maturity securities AFS | $ (15,291) | $ 29,461
Derivatives | 2,336 | 2,061
Other | 294 | 389
Subtotal | (12,661) | 31,911
Policyholder liabilities (1) | (850) | (4,978)
DAC, VOBA and DSI | 2,052 | (3,208)
Subtotal | 1,202 | (8,186)
Deferred income tax benefit (expense) | 2,023 | (6,031)
Net unrealized investment gains (losses) | (9,436) | 17,694
Net unrealized investment gains (losses) attributable to noncontrolling interests | (21) | (23)
Net unrealized investment gains (losses) attributable to MetLife, Inc. | $ (9,457) | $ 17,671

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