Acquisition and Divestitures - Divestitures (Details) - USD ($) $ in Millions			6 Months Ended
	May. 02, 2016	Apr. 28, 2016	Apr. 03, 2016	Mar. 29, 2015	Mar. 23, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from the sale of short term investments			$ 0.3	$ 0.3
Accounts receivable, net			24.4
Inventory, net			25.3
Fixed assets, net			10.0
Goodwill			103.9
Intangible assets, net			10.0
Other assets			1.5
Assets held for sale			175.1
Accounts payable			6.1
Accrued payroll and employee benefits			1.9
Deferred revenue			0.1
Other liabilities			0.9
Liabilities held for sale			$ 9.0
Microsemi LLC - RF Integrated Solutions (RF LLC)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Consideration					$ 300.0
Microsemi LLC - RF Integrated Solutions (RF LLC) | Subsequent event
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from the sale of short term investments	$ 300.0
Remote Radio Head | Subsequent event
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from Divestiture of Businesses, Net of Cash Divested		$ 21.0