Acquisitions (Schedule of Purchase Price Allocation) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jul. 30, 2016	Oct. 29, 2016	May 27, 2016	Oct. 31, 2015	Nov. 01, 2014
Liabilities assumed:
Goodwill		$ 2,295,184		$ 1,617,161	$ 1,567,723
Ruckus [Member]
Assets acquired:
Cash and cash equivalents			$ 95,515
Short-term investments			150,257
Accounts receivable			41,339
Inventories			63,035
Prepaid expenses and other current assets			5,201
Property and equipment, net			21,777
Identifiable intangible assets:			417,000
Other assets			1,697
Total assets acquired			795,821
Liabilities assumed:
Accounts payable			16,375
Accrued employee compensation			17,514
Deferred revenue			13,923
Other accrued liabilities			33,809
Non-current deferred revenue			9,364
Non-current deferred tax liabilities			62,963
Other non-current liabilities			40,561
Total liabilities assumed			194,509
Net assets acquired, excluding goodwill (a)			601,312
Total purchase price	$ 1,275,060
Goodwill			$ 673,748