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Income Taxes (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2014
Mar. 31, 2013
Jun. 30, 2013
Income Tax Disclosure [Abstract]          
Increase (decrease) in gross unrecognized tax benefit in next 12 months $ (17.3)   $ (17.3)    
Number of years open to examination     10 years    
Taxes paid on cash distribution 2.0   2.0   0.4
Effective Income Tax Rate Reconciliation, Percent 22.10% 30.20% 27.20% 22.30%  
Increase (decrease) in net expense of unrecognized tax benefits     13.6    
Increase (decrease) in foreign income tax rate differential $ 3.4   $ (5.0)