REVENUE RECOGNITION - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 03, 2020	Jun. 28, 2019	Jul. 03, 2020	Jun. 28, 2019
Disaggregation of Revenue [Line Items]
Revenues, net	$ 171.2	$ 196.7	$ 568.3	$ 578.2
Americas
Disaggregation of Revenue [Line Items]
Revenues, net	58.7	73.8	191.5	216.4
EMEA
Disaggregation of Revenue [Line Items]
Revenues, net	46.8	67.3	176.0	198.0
APAC
Disaggregation of Revenue [Line Items]
Revenues, net	65.7	55.6	200.8	163.8
UNITED STATES
Disaggregation of Revenue [Line Items]
Revenues, net	$ 56.9	$ 71.4	$ 185.6	$ 210.8