Represents the discount amortization period of liability for future costs.

No definition available.

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- Definition

Represents the number of former operating facility site that the liability for future costs is discounted to present value.

+ References

No definition available.

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- Definition

Other Than LIFO Inventory Amount

+ References

No definition available.

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- Definition

Aggregate of: (i) sales discounts given by the entity, including, but not limited to, early payments of accounts due, (ii) cash rebates offered on sales, (iii) the total deduction from sales during the period, and (iv) price reductions (allowance, price protection agreements) given by the entity. Discounts, rebates, returns and allowances are a deduction from gross revenue in arriving at net revenue.

+ References

No definition available.

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- References

No definition available.

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- Definition

Total costs accrued as of the balance sheet date for environmental loss contingencies.

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- Definition

Rate applied to the undiscounted amount of environmental loss contingencies to arrive at the present value recorded as of the balance sheet date.

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- Definition

Amount of expense for amortization of capitalized computer software costs.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

The carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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No definition available.

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- Definition

The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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Summary of Significant Accounting Policies - Narrative (Details) $ in Millions	12 Months Ended
	Jun. 30, 2019 USD ($) facility	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)
Summary of significant accounting policies
Discounts, rebates, returns and allowances	$ 22.6	$ 26.5	$ 23.8
Research and development expenditures	23.3	19.3	16.9
Inventory accounted under method other than LIFO	173.2	138.6
Capitalized software amortization expense	6.1	5.1	$ 5.2
Carrying value of computer software	$ 123.8	$ 101.8
Number of former operating facility site that the liability for future costs is discounted to present value (facility) \| facility	1
Liability for future costs discount amortization period	20 years
Environmental expenditures, discount rate	3.00%	3.00%
Environmental expenditures, liability	$ 11.0	$ 11.0
Customer \| Sales Revenue \| Arconic
Summary of significant accounting policies
Concentration risk	11.00%	12.00%	11.00%
Customer \| Accounts Receivable \| Arconic
Summary of significant accounting policies
Concentration risk	12.00%
Minimum
Summary of significant accounting policies
Ownership interest percentage by parent	20.00%
Minimum \| Computer software
Summary of significant accounting policies
Estimated useful life	3 years
Minimum \| Intangible Assets
Summary of significant accounting policies
Estimated useful life	5 years
Maximum
Summary of significant accounting policies
Ownership interest percentage by parent	50.00%
Maximum \| Computer software
Summary of significant accounting policies
Estimated useful life	7 years
Maximum \| Intangible Assets
Summary of significant accounting policies
Estimated useful life	30 years