Stock-Based Compensation (Details Textual) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
Sep. 30, 2011	Sep. 30, 2010
Stock-Based Compensation (Textual) [Abstract]
Weighted average fair value of options granted	$ 13.84	$ 9.18
Fair value of options vested	$ 4.3	$ 4.1
Tax benefits resulting from stock-based compensation deductions in excess of amounts reported for financial reporting purposes	1.3	0
Cash received from the exercise of capital stock option	3.6	0.5
Tax benefit from the exercise of capital stock option	0.5	0.1
Total Intrinsic value of options exercised	1.9	0.3
Fair value of shares delivered	0
Awarded restricted stock units governed by total shareholder return	35.00%
Awarded restricted stock units governed by adjusted earnings per share	65.00%
2010 Plan [Member]
Stock-Based Compensation (Textual) [Abstract]
Aggregate number of shares available for issuance under stock and incentive plan	3,500,000
Stock Option [Member]
Stock-Based Compensation (Textual) [Abstract]
Compensation expense related to stock option	2.4	2.0
Unrecognized compensation cost	6.5
Unrecognized compensation costs, weighted average period	2.4
Restricted Stock Award [Member]
Stock-Based Compensation (Textual) [Abstract]
Compensation expense related to stock option	0.3	0.6
Unrecognized compensation cost	0.6
Unrecognized compensation costs, weighted average period	0.8
Restricted Stock Units - Time Vesting [Member]
Stock-Based Compensation (Textual) [Abstract]
Compensation expense related to stock option	5.2	3.6
Unrecognized compensation cost	23.3
Unrecognized compensation costs, weighted average period	2.7
Restricted Stock Units - STEP [Member]
Stock-Based Compensation (Textual) [Abstract]
Compensation expense related to stock option	$ 0.2	$ 0.2
Restricted stock units earn or paid	0

Awarded restricted stock units governed by adjusted earnings per share.

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Awarded restricted stock units governed by shareholder return.

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Restricted stock units earn or paid.

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Share based compensation arrangement by share based payment award options vested in period.

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Stock-based compensation.

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Stock based compensation.

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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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The total fair value of shares issued during the period under a deferred compensation arrangement.

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Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements.

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As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

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The weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, using a decimal to express in number of years.

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Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual period.

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Reductions in the entity's income taxes that arise when compensation cost (from non-qualified share-based compensation) recognized on the entity's tax return exceeds compensation cost from equity-based compensation recognized in financial statements. This element represents the cash inflow reported in the enterprise's financing activities.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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