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Goodwill and Intangible Assets (Schedule Of Expected Amortization Expense For Intangible Assets) (Details)
$ in Millions
Sep. 30, 2019
USD ($)
Goodwill and Intangible Assets [Abstract]  
2019 (remainder) $ 1
2020 6
2021 4
2022 1
2023 1
Total $ 14