Superalloy Powders Technical Assistance and Powder Supply Agreements (Details) (USD $) In Millions, unless otherwise specified					9 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014 Other assets	Mar. 31, 2014 Accrued liabilities	Mar. 31, 2014 Technical assistance agreement and a long-term powder supply agreement UTC	Mar. 31, 2014 Technical assistance agreement and a long-term powder supply agreement UTC Maximum	Mar. 31, 2014 Technical assistance agreement and a long-term powder supply agreement UTC Estimated
Superalloy powders technical assistance and powder supply agreements
Superalloy powder facility construction period							18 months
Superalloy powder facility construction costs							$ 20
Superalloy powder supply term						20 years
Term for minimum guaranteed purchase quantities of specified materials					12 years
Up-front license fee payable				6.5
Up-front license fee asset	13.0		13.0
Up-front license fee paid	$ 3.3	$ 3.3