DISCONTINUED OPERATIONS (Details) - USD ($) $ in Millions			9 Months Ended		12 Months Ended
	Jan. 28, 2017	Jan. 25, 2017	Jun. 29, 2018	Jun. 30, 2017	Sep. 29, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash received from Varex Imaging Corporation			$ 0.0	$ 200.0
Contribution of cash and cash equivalents	$ 81.3		0.0	$ 54.2
Varex Imaging | Discontinued Operations, Disposed of by Means Other than Sale, Spinoff
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash received from Varex Imaging Corporation					$ 200.0
Net assets			$ 1.9
Varex Imaging
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Receipt of excess cash and cash equivalents					38.7
Varex Term Facility
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from term facility		$ 203.0
Transfer of debt outstanding					203.0
Retained Earnings | Varex Imaging
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Distribution of Varex					$ 334.1
Minimum | Varex Imaging
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Transition services agreement	60 days
Maximum | Varex Imaging
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Transition services agreement	24 months