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Goodwill and Other Intangibles (Goodwill Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Goodwill [Line Items] |  |  |
Goodwill impairment pre-tax | $ 177 | $ 903 | $ 1,060
Total Corporate and Other |  |  |
Goodwill [Line Items] |  |  |
Goodwill impairment pre-tax | 177 | 903 | 1,060
Goodwill, Impairment Loss, Net of Tax | $ 140 | $ 713 | $ 837

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