Superalloy Powders Technical Assistance and Powder Supply Agreements (Details) - USD ($) $ in Millions	12 Months Ended
Jun. 30, 2015	Jun. 30, 2014
Superalloy powders technical assistance and powder supply agreements
Up-front license fee paid	$ 13.0
Term for minimum guarantee up-front license fee amortization	12 years
Other assets
Superalloy powders technical assistance and powder supply agreements
Up-front license fee payable	$ 13.0	$ 13.0
Technical assistance agreement and a long-term powder supply agreement \| UTC
Superalloy powders technical assistance and powder supply agreements
Superalloy powder facility construction costs	$ 30.0
Term for minimum guaranteed purchase quantities of specified materials	12 years
Technical assistance agreement and a long-term powder supply agreement \| UTC \| Maximum
Superalloy powders technical assistance and powder supply agreements
Superalloy powder supply term	20 years

Amount of costs which are directly related to the specified activities to build the plant.

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Represents the supply arrangement term for the minimum guaranteed purchase quantities of the specified materials.

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Represents the term of the supply arrangement.

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Line items represent the financial concepts included in a table. These concepts are used to disclose the reportable information associated with the domain members defined in one or many axes to the table.

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Represents the minimum guarantee amortization period of the up front license fee capitalized asset.

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- Definition

Represents the amount of up-front license fee paid according to the terms of the technology licensing agreement.

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Amount of up-front license fee payable according to the terms of the technology licensing agreement.

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