Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
Dec. 31, 2011	Dec. 31, 2011	Dec. 31, 2010	Jun. 30, 2011
Income Taxes [Abstract]
Effective income tax rate		20.00%	23.00%
Taxes at statutory rate		35.00%
Preferential income tax rate		15.00%
Income tax benefit from preferential tax rate	$ 1.3
Unrecognized income tax benefit	3.7	3.7		5.0
Interest and penalties accrued	0.2	0.2		0.2
Decrease in unrecognized tax benefits within next twelve months		0.9
Reversal of tax liability related to uncertain tax positions		$ 0.7

A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

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The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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- Definition

Reflects the effects of adjustments of previously recorded tax expense, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, IRS tax settlement and unusual repatriation of foreign earnings.

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- Definition

This element represents the total of accruals as of the date of the statement of financial position for interest recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

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