Estimated Future Amortization of Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jan. 31, 2014
Expected Amortization Expense [Line Items]
Remainder of fiscal 2014	$ 82,555
2015	94,039
2016	59,147
2017	26,354
2018	14,628
2019 and thereafter	27,501
IPR&D	3,688	[1]
Total	$ 307,912

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