Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
	Dec. 31, 2011	Dec. 31, 2011	Jun. 30, 2011
Income Taxes [Abstract]
Gross unrecognized tax benefits	$ 59.0	$ 59.0	$ 62.2
Gross unrecognized tax benefits that would impact the effective tax rate if recognized	14.1	14.1	16.6
Net decrease in liability for unrecognized tax benefits for uncertain tax positions		3.2
Decrease resulting from change in foreign currency exchange rates		3.8
Unrecognized tax benefits increase related to prior year tax positions in Europe		0.9
Unrecognized tax benefits decrease related to the expiration of statutes of limitations in Europe		0.3
Anticipated liability decrease for unrecognized tax benefits for uncertain tax positions	2.9	2.9
Interest and penalties included in liability for unrecognized tax benefits	8.8	8.8	9.1
Interest and penalties included in income tax expense		0.7
Effective income tax rate	31.20%	31.60%
Specific tax benefits which resulted from a reduction in the statutory tax rate		0.9
Specific tax benefits resulting from the expiration of statutes in Europe and the favorable effect of statutory rates applicable to income earned outside the United States	$ 0.3	$ 0.3