Total costs accrued as of the balance sheet date for environmental loss contingencies.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
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-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 25
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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-SubTopic 30
-Section 50
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Name:	us-gaap_AccrualForEnvironmentalLossContingencies
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

ENVIRONMENTAL REMEDIATION LIABILITIES - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Jun. 30, 2017	Sep. 30, 2018	Dec. 31, 2017
Loss Contingencies [Line Items]
Environmental remediation liabilities		$ 31.0	$ 30.8
Environmental remediation liabilities, projection term		30 years
Hazardous waste facility in Mexico
Loss Contingencies [Line Items]
Environmental remediation liabilities	$ 2.0
Accrued Liabilities
Loss Contingencies [Line Items]
Environmental remediation liabilities		$ 3.2	$ 5.7