Restructuring And Other Costs Restructuring And Other Costs (Schedule of Restructuring and Other Charges) (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2015	Nov. 01, 2014		Oct. 26, 2013
Restructuring Charges [Abstract]
Goodwill impairment charge	$ 0	$ 83,382	[1]	$ 0
Severance and benefits	0	(1,788)		20,413
Contract terminations and other	0	0		3,981
Contract terminations and other	(678)	7,686		1,070
Restructuring, goodwill impairment, and other related costs	$ (678)	$ 89,280		$ 25,464

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