GOODWILL AND OTHER ACQUISITION INTANGIBLES (Activity In Goodwill Balances For Each Segment) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014
Goodwill [Line Items]
Beginning Balance	$ 521.3
Currency exchange	0.6
Ending Balance	521.9
Aerospace Materials
Goodwill [Line Items]
Beginning Balance	238.5
Currency exchange	0.4
Ending Balance	238.9
Industrial Materials
Goodwill [Line Items]
Beginning Balance	186.1
Currency exchange	0.3
Ending Balance	186.4
In Process Separation
Goodwill [Line Items]
Beginning Balance	68.9
Currency exchange	(0.1)
Ending Balance	68.8
Additive Technologies
Goodwill [Line Items]
Beginning Balance	27.8
Currency exchange	0
Ending Balance	$ 27.8