FAIR VALUE - (Details) - USD ($) $ in Millions	Oct. 01, 2021	Oct. 02, 2020
Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) | Convertible Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, fair value	$ 296.3	$ 178.5
Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) | Secured Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, fair value	304.8	312.8
Fair Value, Measurements, Recurring
Assets:
Cash equivalents - money market funds	88.2	72.9
Derivative assets	1.2	1.1
Total assets measured at fair value	89.4	74.0
Liabilities:
Derivative liabilities	2.4	2.1
Deferred consideration		0.0
Total liabilities measured at fair value	2.4	2.1
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1)
Assets:
Cash equivalents - money market funds	0.0	0.0
Derivative assets	0.0	0.0
Total assets measured at fair value	0.0	0.0
Liabilities:
Derivative liabilities	0.0	0.0
Deferred consideration		0.0
Total liabilities measured at fair value	0.0	0.0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Assets:
Cash equivalents - money market funds	88.2	72.9
Derivative assets	1.2	1.1
Total assets measured at fair value	89.4	74.0
Liabilities:
Derivative liabilities	2.4	2.1
Deferred consideration		0.0
Total liabilities measured at fair value	2.4	2.1
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Assets:
Cash equivalents - money market funds	0.0	0.0
Derivative assets	0.0	0.0
Total assets measured at fair value	0.0	0.0
Liabilities:
Derivative liabilities	0.0	0.0
Deferred consideration		0.0
Total liabilities measured at fair value	$ 0.0	$ 0.0