Share-Based Compensation (Details) $ in Millions	12 Months Ended
Jun. 30, 2015 USD ($) plan shares	Jun. 30, 2014 USD ($)	Jun. 30, 2013 USD ($)
Share-based compensation disclosures
Number of share-based compensation plans \| plan	2
Compensation cost	$ 10.0	$ 11.4	$ 13.1
Stock options
Share-based compensation disclosures
Compensation cost	$ 6.8	$ 3.5	$ 3.4
Fair value assumptions
Expected volatility (as a percent)	36.00%	49.00%	55.00%
Dividend yield (as a percent)	1.60%	1.30%	1.50%
Risk-free interest rate (as a percent)	1.40%	1.40%	0.70%
Expected term	5 years	5 years	5 years
Stock options \| Minimum
Share-based compensation disclosures
Options exercisable service period	1 year
Stock options \| Maximum
Share-based compensation disclosures
Options exercisable service period	3 years
Expiration term	10 years
1993 Plan
Share-based compensation disclosures
Shares available for grant \| shares	1,549,511
Director's Plan
Share-based compensation disclosures
Compensation cost	$ 1.1	$ 1.2	$ 1.2
Shares available for grant \| shares	693,116
Options exercisable service period	1 year

Represents the number of share-based compensation plans of the reporting entity.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

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-Publisher FASB

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-Name Staff Accounting Bulletin (SAB)

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

Weighted average expected volatility rate of share-based compensation awards.

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- Definition

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

+ References

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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