Estimated Future Amortization Of Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jul. 31, 2012
Goodwill And Intangible Assets [Abstract]
Remainder of fiscal 2012	$ 26,577
2013	98,108
2014	77,430
2015	61,738
2016	36,731
2017 and thereafter	42,666
IPR&D	7,643	[1]
Total	$ 350,893

[1] IPR&D projects are estimated to be completed within two years of July 31, 2012. Amortization will begin upon project completion or the asset will be written off upon abandonment.