Goodwill and Intangible Assets - Estimated Future Amortization of Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	Oct. 31, 2014		Oct. 31, 2013
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2015	$ 128,611
2016	91,500
2017	55,366
2018	40,150
2019	20,640
2020 and thereafter	25,677
IPR&D	3,086	[1]
Net Assets	$ 365,030		$ 335,425

[1] IPR&D projects are estimated to be completed within one year as of October 31, 2014. Assets are amortized over their useful life upon completion of the project or are written off upon abandonment.