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Intangible Assets (Narrative) (Details)
6 Months Ended
Apr. 30, 2016
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill, Impairment Loss $ 0
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]  
2016 59,600,000
2017 56,100,000
2018 54,100,000
2019 51,500,000
2020 $ 40,900,000