COMMITMENTS AND CONTINGENCIES - Additional Information (Details) $ in Millions			3 Months Ended
	Oct. 15, 2020 USD ($)	Oct. 16, 2018 patent	Jan. 01, 2021 USD ($)	Jan. 03, 2020 USD ($)	Oct. 02, 2020 USD ($)	Aug. 30, 2020 USD ($)
Commitments And Contingencies [Line Items]
Rental income			$ 2.6	$ 2.5
Accrued environmental remediation expense			3.9		$ 4.0
Restructuring charges			0.7
Payments for restructuring			3.0
Siemens Healthineers
Commitments And Contingencies [Line Items]
Business combination, reverse termination fee	$ 450.0
Business combination, early termination fee, cash payable	925.0
Siemens Healthineers
Commitments And Contingencies [Line Items]
Business combination, early termination fee	$ 450.0
Siemens Healthineers | Advisory Fees
Commitments And Contingencies [Line Items]
Contingent consideration liability						$ 110.0
Threatened Litigation | Best Medical International, Inc. Litigation
Commitments And Contingencies [Line Items]
Number of patents allegedly infringed | patent		4
Judicial Ruling | Best Medical International, Inc. Litigation
Commitments And Contingencies [Line Items]
Accrued estimate of loss			$ 8.5
Minimum
Commitments And Contingencies [Line Items]
Lessor, term of operating leases			10 years
Maximum
Commitments And Contingencies [Line Items]
Lessor, term of operating leases			17 years
Equipment
Commitments And Contingencies [Line Items]
Equipment leased to customers included in PP&E			$ 27.1
Accumulated depreciation on equipment leased to customers, included in PP&E			$ 10.0
Leased equipment					26.5
Accumulated depreciation on leased equipment					$ 9.1