Commitments and Contingencies Commitments and Contingencies (Legal Proceedings) (Details) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended
	Jul. 30, 2016 USD ($) shares	May 27, 2016 $ / shares shares	Oct. 31, 2015 shares
Legal Proceedings [Line Items]
Common stock, shares outstanding	400,679		413,923
Ruckus
Legal Proceedings [Line Items]
Common stock, shares outstanding		92,200
Cash Per Share in Acquisition | $ / shares		$ 6.45
Common Stock Per Share in Acquisition		0.75
Business Combination, Consideration Transferred, Liabilities Incurred | $	$ 41.7
Ruckus | Aggregate Value of Dissenting Shares [Member]
Legal Proceedings [Line Items]
Business Combination, Consideration Transferred, Liabilities Incurred | $	$ 41.3
Shares Dissented [Member] | Ruckus
Legal Proceedings [Line Items]
Common stock, shares outstanding		3,200