Acquisitions (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended			0 Months Ended
	Jun. 30, 2012 entity	Jun. 30, 2011 entity	Jun. 30, 2010 entity	Aug. 16, 2010 Cobalt [Member]
Business Acquisition [Line Items]
Number of businesses acquired	7	8	5
Purchase price for acquisitions, net of cash acquired	$ 301.0	$ 370.7	$ 101.0	$ 405.4
Accrued contingent payments related to acquisitions			3.7
Amount of Goodwill resulting from acquisitions	182.4	250.2	80.8	293.5
Number of acquisitions, purchase price not yet finalized	7
Intangible assets acquired	90.0	134.8	33.5	111.6
Weighted average amortized life of intangible assets acquired as part of acquisitions	11 years	9 years	7 years	11 years
Cobalt outstanding shares acquired				100.00%
Business acquisition contingent consideration paid	$ 2.8	$ 0.8	$ 2.6