Restructuring And Other Charges (Schedule of Restructuring and Related Costs) (Details) (USD $)	12 Months Ended
	Nov. 01, 2014	Oct. 26, 2013	Oct. 27, 2012
Restructuring
Goodwill, Impairment Loss	$ (83,382,000)	$ 0	$ 0
Restructuring and Related Cost, Caption that Includes Restructuring Charges	Restructuring, goodwill impairment, and other related costs (recoveries)
Initial Period in which Effects are Expected to be Realized	2021
Restructuring Reserve Rollforward
Restructuring liabilities, Beginning balance	17,426,000	2,582,000
Restructuring and other charges	7,704,000	25,464,000
Cash payments	(18,032,000)	(9,551,000)
Translation adjustment	(137,000)
Non-cash charges		(1,069,000)
Other adjustments, net	(1,805,000)
Restructuring liabilities, Ending balance	5,156,000	17,426,000	2,582,000
Restructuring Reserve Ending Balance
Current restructuring liabilities	2,108,000
Non-current restructuring liabilities	3,048,000
Fiscal 2013 Fourth Quarter Restructuring Plan
Restructuring
Restructuring and Related Activities, Description	During the fiscal year ended October 26, 2013, and the first quarter of fiscal year 2014, the Company restructured certain business operations and reduced the Company’s operating expense structure. The restructuring plan was approved by the Company’s management and communicated to the Company’s employees in September 2013. The plan included a workforce reduction of approximately 250 employees, primarily in the engineering, sales, and marketing organizations, as well as the cancellation of certain nonrecurring engineering agreements and exit from certain leased facilities. The Company substantially completed the restructuring plan by the end of the first quarter of fiscal year 2014. In connection with the plan, the Company incurred aggregate charges of $89.3 million as of November 1, 2014, primarily related to a goodwill impairment charge of $83.4 million (see Note 4, “Goodwill and Intangible Assets,” of the Notes to Consolidated Financial Statements). Severance and benefits charges incurred under this restructuring plan consisted of severance and related employee termination costs, including salary and other compensation payments to the employees during their post-notification retention period as well as associated outplacement services. The post-notification retention period for the employees terminated under the plan did not exceed the legal notification period, or, in the absence of a legal notification requirement, 60 days. Contract terminations and other charges were primarily related to the cancellation of certain contracts in connection with the restructuring of certain business functions. Lease loss reserve and related costs were primarily related to the costs that will continue to be incurred under exited facilities’ lease contracts for the remaining term of the leases without economic benefit to the Company, reduced by estimated sublease income that could be reasonably obtained for these facilities.
Restructuring and Related Activities, Authorized Approval	The restructuring plan was approved by the Company’s management and communicated to the Company’s employees in September 2013.
Restructuring and Related Activities, Initiation Date	Sep. 04, 2013
Restructuring and Related Cost, Expected Number of Positions Eliminated	250
Restructuring and Related Activities, Expected Completion Date	Jan. 25, 2014
Restructuring and Related Cost, Description	Severance and benefits charges incurred under this restructuring plan consisted of severance and related employee termination costs, including salary and other compensation payments to the employees during their post-notification retention period as well as associated outplacement services. The post-notification retention period for the employees terminated under the plan did not exceed the legal notification period, or, in the absence of a legal notification requirement, 60 days. Contract terminations and other charges were primarily related to the cancellation of certain contracts in connection with the restructuring of certain business functions. Lease loss reserve and related costs were primarily related to the costs that will continue to be incurred under exited facilities’ lease contracts for the remaining term of the leases without economic benefit to the Company, reduced by estimated sublease income that could be reasonably obtained for these facilities. The Company reevaluates its estimates and assumptions on a quarterly basis and makes adjustments to the restructuring liabilities balance if necessary. During the fiscal year ended November 1, 2014, the Company reversed approximately $1.8 million of severance and benefits charges due to actual cash payments to certain terminated employees being lower than original estimates as a result of the completion of the severance arrangements with these employees during the first quarter of fiscal year 2014.
Restructuring and Related Cost, Cost Incurred to Date	89,300,000
Restructuring Reserve Rollforward
Other adjustments, net	1,800,000
Restructuring Reserve Ending Balance
Restructuring Reserve, Adjustment Description	The Company reevaluates its estimates and assumptions on a quarterly basis and makes adjustments to the restructuring liabilities balance if necessary. During the fiscal year ended November 1, 2014, the Company reversed approximately $1.8 million of severance and benefits charges due to actual cash payments to certain terminated employees being lower than original estimates as a result of the completion of the severance arrangements with these employees during the first quarter of fiscal year 2014.
Prior Restructuring Plans
Restructuring
Restructuring and Related Activities, Description	Prior to fiscal year 2013, the Company also recorded charges related to estimated facilities lease losses, net of expected sublease income, due to consolidation of real estate space as a result of acquisitions.
Restructuring and Related Cost, Description	Prior to fiscal year 2013, the Company also recorded charges related to estimated facilities lease losses, net of expected sublease income, due to consolidation of real estate space as a result of acquisitions.
Severance and Benefits | Fiscal 2013 Fourth Quarter Restructuring Plan
Restructuring Reserve Rollforward
Restructuring liabilities, Beginning balance	15,216,000	0
Restructuring and other charges	18,000	20,413,000
Cash payments	(13,258,000)	(5,197,000)
Translation adjustment	0
Non-cash charges		0
Other adjustments, net	(1,805,000)
Restructuring liabilities, Ending balance	171,000	15,216,000
Restructuring Reserve Ending Balance
Current restructuring liabilities	171,000
Non-current restructuring liabilities	0
Contract Terminations and Other | Fiscal 2013 Fourth Quarter Restructuring Plan
Restructuring Reserve Rollforward
Restructuring liabilities, Beginning balance	416,000	0
Restructuring and other charges	0	3,981,000
Cash payments	(374,000)	(3,565,000)
Translation adjustment	0
Non-cash charges		0
Other adjustments, net	0
Restructuring liabilities, Ending balance	42,000	416,000
Restructuring Reserve Ending Balance
Current restructuring liabilities	42,000
Non-current restructuring liabilities	0
Lease Loss Reserve and Related Costs | Fiscal 2013 Fourth Quarter Restructuring Plan
Restructuring Reserve Rollforward
Restructuring liabilities, Beginning balance	0	0
Restructuring and other charges	7,686,000	1,070,000
Cash payments	(3,600,000)	(1,000)
Translation adjustment	(137,000)
Non-cash charges		(1,069,000)
Other adjustments, net	0
Restructuring liabilities, Ending balance	3,949,000	0
Restructuring Reserve Ending Balance
Current restructuring liabilities	1,478,000
Non-current restructuring liabilities	2,471,000
Lease Loss Reserve and Related Costs | Prior Restructuring Plans
Restructuring Reserve Rollforward
Restructuring liabilities, Beginning balance	1,794,000	2,582,000
Restructuring and other charges	0	0
Cash payments	(800,000)	(788,000)
Translation adjustment	0
Non-cash charges		0
Other adjustments, net	0
Restructuring liabilities, Ending balance	994,000	1,794,000
Restructuring Reserve Ending Balance
Current restructuring liabilities	417,000
Non-current restructuring liabilities	$ 577,000