Goodwill And Intangible Assets (Estimated Future Amortization Of Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jan. 31, 2012 years
Goodwill And Intangible Assets [Abstract]
Remainder of fiscal 2012	$ 49,281
2013	54,065
2014	33,688
2015	19,105
2016	13,458
2017 and thereafter	8,193
IPR&D	3,725	[1]
Total	$ 181,515
Estimated completion period of IPR&D projects, years	2

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