COMMITMENTS AND CONTINGENCIES - Lease Balance Sheet Information (Details) - USD ($) $ in Millions	Jan. 01, 2021	Oct. 02, 2020
Operating leases:
Operating right-of-use assets	$ 119.5	$ 121.0
Accrued liabilities	27.2	27.2
Long-term lease liabilities	101.7	101.1
Total lease liabilities	128.9	128.3
Finance leases:
Property, plant, and equipment, net	10.6	11.5
Accrued liabilities	3.1	3.4
Other long-term liabilities	8.5	8.7
Total lease liabilities	$ 11.6	$ 12.1
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccruedLiabilitiesCurrent	us-gaap:AccruedLiabilitiesCurrent
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesNoncurrent	us-gaap:OtherLiabilitiesNoncurrent
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccruedLiabilitiesCurrent	us-gaap:AccruedLiabilitiesCurrent