Derivative Instruments And Hedging Activities (Schedule Of Net Gains (Losses) Related To The Effective Portion Of Foreign Currency Derivatives) (Details) (Foreign Exchange Contract, USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Aug. 02, 2014	Jul. 27, 2013	Aug. 02, 2014	Jul. 27, 2013
Derivative Instruments, Gain (Loss)
Net gains (losses) related to the effective portion of foreign currency derivatives	$ 246	$ 11	$ 240	$ 242
Cost of revenues
Derivative Instruments, Gain (Loss)
Net gains (losses) related to the effective portion of foreign currency derivatives	53	2	173	31
Research and development
Derivative Instruments, Gain (Loss)
Net gains (losses) related to the effective portion of foreign currency derivatives	(80)	(2)	(665)	53
Sales and marketing
Derivative Instruments, Gain (Loss)
Net gains (losses) related to the effective portion of foreign currency derivatives	236	10	657	152
General and administrative
Derivative Instruments, Gain (Loss)
Net gains (losses) related to the effective portion of foreign currency derivatives	$ 37	$ 1	$ 75	$ 6