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	12 Months Ended
	Nov. 01, 2014	Oct. 26, 2013	Oct. 27, 2012
Derivative Instruments, Gain (Loss)
Net gains (losses) related to the effective portion of foreign currency derivatives	$ 262	$ 425	$ (8,351)
Cost of revenues
Derivative Instruments, Gain (Loss)
Net gains (losses) related to the effective portion of foreign currency derivatives	126	98	(1,043)
Research and development
Derivative Instruments, Gain (Loss)
Net gains (losses) related to the effective portion of foreign currency derivatives	(451)	(60)	(1,094)
Sales and marketing
Derivative Instruments, Gain (Loss)
Net gains (losses) related to the effective portion of foreign currency derivatives	528	356	(5,704)
General and administrative
Derivative Instruments, Gain (Loss)
Net gains (losses) related to the effective portion of foreign currency derivatives	$ 59	$ 31	$ (510)