SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Product Warranty (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 01, 2021	Oct. 02, 2020
Movement in Standard Product Warranty Accrual [Roll Forward]
Accrued product warranty, at beginning of period	$ 8.1	$ 8.1
Charged to cost of revenues	13.0	15.1
Actual product warranty expenditures	(12.6)	(15.1)
Accrued product warranty, at end of period	$ 8.5	$ 8.1
Minimum
Product Warranty Liability [Line Items]
Warranty term (in months)	12 months
Maximum
Product Warranty Liability [Line Items]
Warranty term (in months)	24 months