LEASES - Schedule of Operating Lease Cost and Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 27, 2024	Sep. 29, 2023	Sep. 30, 2022
Leases [Abstract]
Total operating lease costs	$ 6.3	$ 5.8	$ 6.4
Total finance lease costs	0.3	0.2	0.2
Operating cash flows from operating leases	5.9	7.8	7.3
Financing cash flows from finance leases	0.5	0.3	0.2
Total cash paid for amounts included in the measurement of lease liabilities	6.4	8.1	7.5
Non-cash operating right-of-use assets obtained in exchange for new lease liabilities	5.4	10.6	5.4
Non-cash finance right-of-use assets obtained in exchange for new lease liabilities	6.5	0.2	0.1
Total right-of-use assets obtained in exchange for new lease liabilities	$ 11.9	$ 10.8	$ 5.5