Goodwill And Intangible Assets (Estimated Future Amortization Of Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Apr. 30, 2012 Y
Goodwill And Intangible Assets [Abstract]
Remainder of fiscal 2012	$ 51,914
2013	94,578
2014	73,996
2015	58,750
2016	34,772
2017 and thereafter	42,060
IPR&D	8,043	[1]
Total	$ 364,113
Estimated completion period of IPR&D projects, years	2

[1] IPR&D projects are estimated to be completed within two years of April 30, 2012. Amortization will begin upon project completion or the asset will be written off upon abandonment.