LEASES - Schedule of Operating and Finance Lease Liability Maturities (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 27, 2019	Oct. 01, 2021
Leases [Abstract]
Operating leases, rent expense	$ 5.1
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2022		$ 7.4
2023		4.9
2024		4.1
2025		3.9
2026		2.4
Thereafter		6.7
Total future lease payments		29.4
Less: imputed interest		(4.5)
Present value of lease liabilities		24.9
Finance Lease, Liability, Payment, Due [Abstract]
2022		0.2
2023		0.2
2024		0.1
2025		0.0
2026		0.0
Thereafter		0.0
Total future lease payments		0.5
Less: imputed interest		0.0
Present value of lease liabilities		$ 0.5