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Intangible Assets (Schedule of Estimated Amortization Expenses for Intangible Assets with Finite Lives) (Details)
$ in Millions
Oct. 31, 2018
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2019 $ 143.0
2020 133.3
2021 132.0
2022 130.1
Thereafter 974.0
Total remaining amortization for intangible assets $ 1,512.4