Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013
Components of Environmental Loss Accrual [Abstract]
Accrual For Environmental Loss Contingencies	$ 15
Accrued Environmental Loss Contingencies Current	9
Federal Superfund and comparable state-managed sites	5
Formerly owned or operated sites	7
Owned or controlled sites at which Company operations have been discontinued	2
Sites utilized by the company in its ongoing operations	1
Loss Contingency, Estimate [Abstract]
Loss contingency maximum possible loss	8
Tungsten Materials Business
Loss Contingency, Estimate [Abstract]
Conditional asset retirement obligation costs, Idenmity Maximum	13
Conditional asset retirement obligation costs, Unreserved portion of Maximum	$ 9.5