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Intangible Assets (Narrative) (Details)
3 Months Ended
Jan. 31, 2017
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill, Impairment Loss $ 0
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]  
2017 66,400,000
2018 64,000,000
2019 61,600,000
2020 51,900,000
2021 $ 50,400,000