SEGMENT INFORMATION (Summarized Segment Information) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]
Defined Benefit Plan, Actuarial Gain (Loss)	$ 6.2	$ (6.3)
Restructuring charges	0.1	0.3	7.0
Sales to external customers	489.0	477.7
Total consolidated net sales	489.0	477.4
Total earnings from operations	77.4	53.6
Percentage of sales	16.00%	11.00%
Aerospace Materials
Segment Reporting Information [Line Items]
Sales to external customers	243.4	236.0
Revenue from Related Parties	0	0.1
Total earnings from operations	37.9	45.0
Percentage of sales	16.00%	19.00%
Industrial Materials
Segment Reporting Information [Line Items]
Sales to external customers	83.2	84.0
Total earnings from operations	8.2	2.8
Percentage of sales	10.00%	3.00%
In Process Separation
Segment Reporting Information [Line Items]
Sales to external customers	96.2	88.8
Total earnings from operations	19.2	17.7
Percentage of sales	20.00%	20.00%
Additive Technologies
Segment Reporting Information [Line Items]
Sales to external customers	66.2	68.6
Revenue from Related Parties	0	0.2
Total earnings from operations	7.9	8.9
Percentage of sales	12.00%	13.00%
Operating Segments
Segment Reporting Information [Line Items]
Total earnings from operations	73.2	74.4
Percentage of sales	15.00%	16.00%
Elimination Of Intersegment Revenue
Segment Reporting Information [Line Items]
Elimination of intersegment revenue	0	(0.3)
Unallocated Amount to Segment
Segment Reporting Information [Line Items]
Restructuring charges		0.3
Total earnings from operations	4.2	(20.8)
Unallocated Amount to Segment \| Umeco
Segment Reporting Information [Line Items]
Restructuring charges		0.3
Unallocated Amount to Segment \| Former Coatings Segment
Segment Reporting Information [Line Items]
Costs previously allocated to a former business		$ 12.2

Costs previously allocated to a former business segment.

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Earnings from operation of a segment as a percentage of its sales.

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Elimination Of Revenues From Transactions With Other Operating Segments Of Same Entity

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Amount of gain (loss) related to change in benefit obligation resulting from changes in actuarial assumptions, for example, but not limited to, interest, mortality, employee turnover, salary, and temporary deviation from the substantive plan.

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The net result for the period of deducting operating expenses from operating revenues.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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