Goodwill and Intangible Assets, Net - Narrative (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
3 Months Ended 9 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2015
Mar. 31, 2014
Finite-Lived Intangible Assets [Line Items]        
Amortization of intangibles $ 7.0 $ 7.1 $ 37.5 $ 21.5
Trademarks        
Finite-Lived Intangible Assets [Line Items]        
Amortization of intangibles     $ 15.6  
Effect of change in estimated useful life of trademark on earnings per share, basic, net of tax (usd per share)     $ 0.06  
Effect of change in estimated useful life of trademark on earnings per share, diluted, net of tax (usd per share)     $ 0.06  
Weighted average remaining useful life     10 years  
Other intangibles        
Finite-Lived Intangible Assets [Line Items]        
Weighted average remaining useful life     6 years  
Software        
Finite-Lived Intangible Assets [Line Items]        
Weighted average remaining useful life     3 years  
Client lists        
Finite-Lived Intangible Assets [Line Items]        
Weighted average remaining useful life     7 years