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Income Taxes (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 6 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Jun. 30, 2013
Income Tax Disclosure [Abstract]          
Increase (decrease) in gross unrecognized tax benefit in next 12 months $ (3.9)   $ (3.9)    
Number of years open to examination     10 years    
Taxes paid on cash distribution 1.4   1.4   0.4
Effective Income Tax Rate Reconciliation, Percent 23.70% 4.90% 29.70% 19.40%  
Increase (decrease) in net expense of unrecognized tax benefits 11.6   13.2    
Increase (decrease) in foreign income tax rate differential $ 2.1   $ (1.6)