RELATED-PARTY TRANSACTIONS Allocated Expenses (Details) - Varian - USD ($) $ in Millions	3 Months Ended
	Dec. 30, 2016	Jan. 01, 2016
Selling, general and administrative
Related Party Transaction [Line Items]
Costs and expenses, related party	$ 11.9	$ 11.2
Research and development
Related Party Transaction [Line Items]
Costs and expenses, related party	0.0	0.3
Interest expense, net of interest income
Related Party Transaction [Line Items]
Costs and expenses, related party	$ 0.5	$ 0.2