Goodwill and Other Intangibles Assets - Estimated Annual Amortization Expense (Details)
$ in Millions
Oct. 31, 2016
USD ($)
 [1]
Goodwill and Intangible Assets Disclosure [Abstract]  
Estimated Amortization Expense 2017 $ 22.8
Estimated Amortization Expense 2018 19.8
Estimated Amortization Expense 2019 16.8
Estimated Amortization Expense 2020 13.8
Estimated Amortization Expense 2021 $ 10.9
[1] These amounts will vary as acquisitions of additional intangible assets occur in the future and as purchase price allocations are finalized for existing acquisitions.