COMMITMENTS AND CONTINGENCIES - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017	Sep. 29, 2017
Commitments And Contingencies [Line Items]
Environmental cleanup costs, third-party claim costs, project management costs and legal costs	$ 0.2	$ 0.2	$ 0.6	$ 0.5
Receivables of past and future environmental-related expenditures	1.5		1.5		$ 1.6
Group A Sites
Commitments And Contingencies [Line Items]
Amount accrued for environmental remediation expense	0.8		0.8
Group A Sites | Minimum
Commitments And Contingencies [Line Items]
Estimate of loss	0.8		$ 0.8
Estimated time frames to resolve contingency related to environmental remediation contingencies, years			1 year
Group A Sites | Maximum
Commitments And Contingencies [Line Items]
Estimate of loss	5.3		$ 5.3
Estimated time frames to resolve contingency related to environmental remediation contingencies, years			30 years
Group B Sites
Commitments And Contingencies [Line Items]
Amount accrued for environmental remediation expense	4.7		$ 4.7
Estimated environmental remediation costs, best estimate, undiscounted	$ 5.3		$ 5.3
Discount rate for environmental remediation costs, net of inflation (as a percent)	4.00%		4.00%
Group B Sites | Minimum
Commitments And Contingencies [Line Items]
Estimate of loss	$ 3.9		$ 3.9
Estimated time frames to resolve contingency related to environmental remediation contingencies, years			1 year
Group B Sites | Maximum
Commitments And Contingencies [Line Items]
Estimate of loss	$ 18.1		$ 18.1
Estimated time frames to resolve contingency related to environmental remediation contingencies, years			30 years