COMMITMENTS AND CONTINGENCIES - Additional Information (Detail) $ in Millions	1 Months Ended		3 Months Ended
	Sep. 30, 2015 patent	Jun. 30, 2015 tender	Jan. 01, 2016 USD ($)	Jan. 02, 2015 USD ($)	Oct. 02, 2015 USD ($)
Commitments And Contingencies [Line Items]
Percentage of partner responsibility			33.33%
Long term accrued product warranty costs			$ 1.9		$ 2.0
Environmental cleanup costs, third-party claim costs, project management costs and legal costs			0.2	$ 0.3
Receivables of past and future environmental-related expenditures			1.9		$ 2.1
Restructuring charges			4.8	$ 10.5
Payments for Restructuring			2.7
Cercla sites and one past facility
Commitments And Contingencies [Line Items]
Estimated environmental remediation costs, minimum			1.4
Estimated environmental remediation costs, maximum			9.8
Amount accrued for environmental remediation expense			$ 1.4
Cercla sites and one past facility | Minimum
Commitments And Contingencies [Line Items]
Estimated time frames to resolve contingency related to environmental remediation contingencies, years			1 year
Cercla sites and one past facility | Maximum
Commitments And Contingencies [Line Items]
Estimated time frames to resolve contingency related to environmental remediation contingencies, years			30 years
Other sites
Commitments And Contingencies [Line Items]
Estimated environmental remediation costs, minimum			$ 5.3
Estimated environmental remediation costs, maximum			25.7
Amount accrued for environmental remediation expense			7.2
Estimated environmental remediation costs, best estimate, undiscounted			$ 8.7
Discount rate for environmental remediation costs, net of inflation (as a percent)			4.00%
Other sites | Minimum
Commitments And Contingencies [Line Items]
Estimated time frames to resolve contingency related to environmental remediation contingencies, years			1 year
Other sites | Maximum
Commitments And Contingencies [Line Items]
Estimated time frames to resolve contingency related to environmental remediation contingencies, years			30 years
Elekta Ltd.
Commitments And Contingencies [Line Items]
Number of patents | patent	3
Portugal Investigation
Commitments And Contingencies [Line Items]
Number of tenders | tender		3