Derivative Instruments And Hedging Activities (Schedule Of Net Gains (Losses) Related To The Effective Portion Of Foreign Currency Derivatives) (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Jul. 30, 2011	Jul. 31, 2010	Jul. 30, 2011	Jul. 31, 2010
Net gains (losses) related to the effective portion of foreign currency derivatives	$ 2,391	$ (3,087)	$ 4,916	$ (3,492)
Cost Of Revenues [Member]
Net gains (losses) related to the effective portion of foreign currency derivatives	311		597
Research And Development [Member]
Net gains (losses) related to the effective portion of foreign currency derivatives	96		282
Sales And Marketing [Member]
Net gains (losses) related to the effective portion of foreign currency derivatives	1,817		3,740
General And Administrative [Member]
Net gains (losses) related to the effective portion of foreign currency derivatives	167		297
Interest And Other Income (Loss), Net [Member]
Net gains (losses) related to the effective portion of foreign currency derivatives		$ (3,087)		$ (3,492)