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Disposition of MetLife Poland and Greece - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Jul. 31, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Net investment gains (losses) | $ (1,262) | $ 1,529 | $ (110) |
Income (loss) from continuing operations before provision for income tax | 2,859 | 8,126 | 6,927 |
MetLife Poland and Greece |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Agreed upon proceeds from divestiture of business. |  |  |  | $ 738
Dividends Receivable |  |  |  | $ 43
Net investment gains (losses) | (25) |  |  |
Gain (Loss) on Disposition of Business | (239) |  |  |
Income (loss) from continuing operations before provision for income tax | $ 19 | $ 50 | $ 30 |

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