RESTRUCTURING OF OPERATIONS (Narrative) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended				12 Months Ended				12 Months Ended						12 Months Ended						1 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2013 2013 Restructuring Initiatives	Dec. 31, 2012 2013 Restructuring Initiatives	Dec. 31, 2011 2013 Restructuring Initiatives	Dec. 31, 2010 2013 Restructuring Initiatives	Dec. 31, 2013 2013 Restructuring Initiatives Industrial Materials Employees	Dec. 31, 2013 2013 Restructuring Initiatives Aerospace Materials Employees	Dec. 31, 2013 2012 Restructuring Initiatives	Dec. 31, 2012 2012 Restructuring Initiatives	Dec. 31, 2011 2012 Restructuring Initiatives	Dec. 31, 2010 2012 Restructuring Initiatives	Dec. 31, 2012 2012 Restructuring Initiatives Aerospace Materials and Industrial Materials [Member] Employees	Dec. 31, 2012 2012 Restructuring Initiatives Corporate Functions [Member] Employees	Dec. 31, 2013 2010 Restructuring Initiatives	Dec. 31, 2012 2010 Restructuring Initiatives	Dec. 31, 2011 2010 Restructuring Initiatives	Dec. 31, 2010 2010 Restructuring Initiatives	May 31, 2010 2010 Restructuring Initiatives Mt. Pleasant, Tennessee Facility In-Process Separation Segment Employees	Dec. 31, 2012 2010 Restructuring Initiatives Mt. Pleasant, Tennessee Facility In-Process Separation Segment	Dec. 31, 2011 2010 Restructuring Initiatives Mt. Pleasant, Tennessee Facility In-Process Separation Segment	Dec. 31, 2010 2010 Restructuring Initiatives Mt. Pleasant, Tennessee Facility In-Process Separation Segment	Dec. 31, 2013 2009 Restructuring Initiatives	Dec. 31, 2012 2009 Restructuring Initiatives	Dec. 31, 2011 2009 Restructuring Initiatives	Dec. 31, 2010 2009 Restructuring Initiatives
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated									55	120					28	171					10
Restructuring Charges	$ 6.9	$ 21.2	$ 0.8		$ 6.1	$ 0	$ 0		$ 4.5	$ 1.6	$ 0.9	$ 21.3	$ 0		$ 6.6	$ 14.7	$ 0	$ (0.2)	$ 1.1					$ 5.5	$ (0.1)	$ 0.1	$ (0.3)
Restructuring Reserve	6.6	13.3	0.5	3.0	1.8	0	0	0			4.8	13.2	0	0			0	0	0.3	1.5					0	0.1	0.2	1.5
Severance cost																								0.4
Write-down of manufacturing assets	5.8	0	0																					1.7
Additional costs																								3.4
Restructuring charge, adjustment related to restructuring initiatives											$ (0.9)											$ 0.2	$ (1.1)