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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