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Intangible Assets And Goodwill (Future Estimated Amortization Expense) (Details)
$ in Millions
Jun. 30, 2020
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
Remainder of 2020 $ 154.9
2021 309.7
2022 309.4
2023 308.0
2024 301.3
2025 301.1
Thereafter $ 2,797.3