Acquisition - Tungsten Materials Business (Details) (TMB [Member], USD $)	Nov. 04, 2013
TMB [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Significant Acquisitions and Disposals, Acquisition Costs or Sale Proceeds	$ 607,000,000

The value of all consideration given or received by the Entity in the significant acquisition or disposal.

No definition available.

Name:	us-gaap_SignificantAcquisitionsAndDisposalsAcquisitionCostsOrSaleProceeds
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant