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Goodwill And Other Intangible Assets (Narrative) (Details)
$ in Millions
Dec. 31, 2019
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
Estimated amortization expense 2020 $ 290
Estimated amortization expense 2021 244
Estimated amortization expense 2022 195
Estimated amortization expense 2023 162
Estimated amortization expense 2024 $ 85