COMMITMENTS AND CONTINGENCIES - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 30, 2018	Mar. 31, 2017	Mar. 30, 2018	Mar. 31, 2017	Sep. 29, 2017
Commitments And Contingencies [Line Items]
Environmental cleanup costs, third-party claim costs, project management costs and legal costs	$ 0.2	$ 0.1	$ 0.4	$ 0.3
Receivables of past and future environmental-related expenditures	1.4		1.4		$ 1.6
Group A Sites
Commitments And Contingencies [Line Items]
Amount accrued for environmental remediation expense	1.0		1.0
Group A Sites | Minimum
Commitments And Contingencies [Line Items]
Estimate of loss	1.0		$ 1.0
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	7.9		$ 7.9
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	$ 5.5		$ 5.5
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	$ 3.4		$ 3.4
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	$ 19.3		$ 19.3
Estimated time frames to resolve contingency related to environmental remediation contingencies, years			30 years