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Intangible Assets and Goodwill (Schedule of Estimated Future Amortization Expense) (Details)
$ in Millions
Dec. 31, 2019
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2020 $ 50
2021 45
2022 43
2023 42
2024 37
Thereafter 505
Total $ 722