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Goodwill and Other Intangible Assets (Expected Amortization Expense Relating To Existing Intangible Assets) (Details)
$ in Millions
Jul. 31, 2019
USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]  
2020 $ 8.0
2021 7.8
2022 7.0
2023 5.9
2024 5.5
Thereafter 36.7
Total expected amortization expense $ 70.9