Superalloy Powders Technical Assistance and Powder Supply Agreements (Details) (Technical assistance agreement and a long-term powder supply agreement, UTC, USD $) In Millions, unless otherwise specified	3 Months Ended
	Sep. 30, 2013
Superalloy powders technical assistance and powder supply agreements
Term for minimum guaranteed purchase quantities of specified materials	12 years
Up-front license fee payable	$ 13.0
Maximum
Superalloy powders technical assistance and powder supply agreements
Superalloy powder supply term	20 years
Estimated
Superalloy powders technical assistance and powder supply agreements
Superalloy powder facility construction period	18 months
Superalloy powder facility construction costs	$ 20