ENVIRONMENTAL, CONTINGENCIES AND COMMITMENTS (Other Contingencies Narrative) (Detail) $ in Millions	3 Months Ended		9 Months Ended	12 Months Ended
	Sep. 30, 2015 USD ($) cases	Dec. 31, 2014 USD ($) Person	Sep. 30, 2015 USD ($) cases Person	Dec. 31, 2005 cases
Other Commitments [Line Items]
Loss Contingency Accrual	$ 44.0	$ 45.9	$ 44.0
Loss Contingency, Receivable	20.3	19.7	20.3
Asbestos Issue
Other Commitments [Line Items]
Loss Contingency Accrual	33.9	36.5	33.9
Loss Contingency, Receivable	$ 20.0	$ 19.3	20.0
Loss Contingency, Number of Claimants with Claims Closed During Period | Person		3,000
Loss Contingency Accrual, Period Increase (Decrease)			0.4
Loss Contingency, Receivable, Period Increase (Decrease)			$ 2.1
Recovery Of Future Indemnity Costs			52.00%
Lead Pigment [Member]
Other Commitments [Line Items]
Loss Contingency, Number of Years in Which Company Was Named Defendant in Cases			20 years
Loss Contingency, Number of Cases in Which Company Was Named Defendant (More Than) | cases			50
Loss Contingency, Claims Settled, Number | cases				1
Loss Contingency, Pending Claims, Number | cases	8		8
Loss Contingency, Number of Plaintiffs | Person			172
Loss Contingencies, Estimated Remaining Liability			$ 0.0
Single Lead Pigment Case
Other Commitments [Line Items]
Loss Contingency, Pending Claims, Number | cases	1		1
Loss Contingency, Number of Plaintiffs			164
Remaining Lead Pigment Cases
Other Commitments [Line Items]
Loss Contingency, Pending Claims, Number | cases	7		7
Loss Contingency, Number of Plaintiffs | Person			10
Merger Agreement with Solvay
Other Commitments [Line Items]
Loss Contingencies, Estimated Remaining Liability			$ 0.0
Merger Agreement with Solvay | Complaints filed in Delaware
Other Commitments [Line Items]
Loss Contingency, New Claims Filed, Number | cases	2