Acquisitions Acquisitions (Schedule of Purchase Price Allocation) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jul. 30, 2016	May 27, 2016	Oct. 31, 2015
Liabilities assumed:
Goodwill	$ 2,324,315		$ 1,617,161
Ruckus
Assets acquired:
Cash and cash equivalents		$ 95,515
Short-term investments		149,615
Accounts receivable, net of allowances for doubtful accounts of $2,100		41,339
Inventories		66,000
Prepaid expenses and other current assets		5,953
Property and equipment, net		21,777
Identifiable intangible assets		380,000
Other assets		1,697
Total assets acquired		761,896
Liabilities assumed:
Accounts payable		16,375
Accrued employee compensation		17,514
Deferred revenue		13,923
Other accrued liabilities		33,810
Non-current deferred revenue		9,364
Non-current deferred tax liabilities		57,677
Other non-current liabilities		40,561
Total liabilities assumed		189,224
Net assets acquired		572,672
Total preliminary purchase consideration (b)	$ 1,275,448
Goodwill		$ 702,776