Income Taxes (Narrative) (Details) (USD $)	3 Months Ended			6 Months Ended
	May 03, 2014		Apr. 27, 2013	May 03, 2014		Apr. 27, 2013
Current Income Tax Expense (Benefit), Continuing Operations
U.S. federal statutory tax rate				35.00%		35.00%
Goodwill impairment charge	$ 83,382,000	[1]	$ 0	$ 83,382,000	[1],[2]	$ 0
Change in California deferred tax asset valuation allowance as a result of the passage of Proposition 39						78,200,000
Income Tax Contingency
Amount of unrecognized tax benefits that could affect the effect tax rate	81,300,000			81,300,000
Upper range of estimated potential decreases in underlying uncertain tax positions	5,000,000			5,000,000
Lower range of estimated potential decreases in underlying uncertain tax positions	$ 0			$ 0

[1] For additional discussion on goodwill impairment, see Note 4, “Goodwill and Intangible Assets,” of the Notes to Condensed Consolidated Financial Statements.

[2] In the second quarter of fiscal year 2014, the Company has made a strategic shift in the allocation of its engineering resources and has reduced its investment in the hardware-based ADX products and increased investment in the software-based ADX products for the Layer 4-7 market. As a result of this change in strategy, the Company expects hardware-based ADX and related support revenue to be negatively impacted. Based on these changes in estimates, the Company recognized an impairment charge because the book value of its Application Delivery Products (“ADP”) reporting unit net assets, which includes the ADX products, exceeded the estimated fair value of these assets. The goodwill amount related to the Company’s other reporting units was not impacted.