COMMITMENTS AND CONTINGENCIES - Additional Information (Detail) $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended
	Jun. 30, 2015 tender	Mar. 31, 2017 USD ($)	Apr. 01, 2016 USD ($)	Mar. 31, 2017 USD ($)	Apr. 01, 2016 USD ($)	Sep. 30, 2016 USD ($)
Commitments And Contingencies [Line Items]
Environmental cleanup costs, third-party claim costs, project management costs and legal costs		$ 0.1	$ 0.2	$ 0.3	$ 0.4
Receivables of past and future environmental-related expenditures		2.0		2.0		$ 2.0
Restructuring Charges		2.5		6.3	$ 2.9
Expected cost		1.2		1.2
Group A Sites
Commitments And Contingencies [Line Items]
Amount accrued for environmental remediation expense		0.9		0.9
Group A Sites | Minimum
Commitments And Contingencies [Line Items]
Estimate of loss		0.9		$ 0.9
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		7.8		$ 7.8
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		5.3		$ 5.3
Estimated environmental remediation costs, best estimate, undiscounted		$ 6.2		$ 6.2
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		$ 4.0		$ 4.0
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		$ 20.2		$ 20.2
Estimated time frames to resolve contingency related to environmental remediation contingencies, years				30 years
Portugal Investigation
Commitments And Contingencies [Line Items]
Number of tenders | tender	3