DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Derivative Instruments Reported on the Balance Sheet (Details) - Foreign currency forward contracts - USD ($) $ in Millions	Jul. 03, 2020	Sep. 27, 2019
Derivatives, Fair Value [Line Items]
Total derivatives	$ 1.5	$ 2.8
Designated as Hedging Instrument | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Total derivatives	0.9	2.8
Designated as Hedging Instrument | Accrued liabilities
Derivatives, Fair Value [Line Items]
Total derivatives	(0.1)	0.0
Derivatives Not Designated as Hedging Instrument | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Total derivatives	$ 0.7	$ 0.0