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Intangible Assets (Schedule of Estimated Future Amortization Of Intangible Assets) (Detail) - USD ($)
$ in Millions
Jun. 30, 2015
Jun. 30, 2014
Intangible Assets Net Excluding Goodwill [Abstract]    
2016 $ 66.3  
2017 66.2  
2018 66.2  
2019 66.2  
2020 62.6  
Thereafter 599.4  
Total Net $ 926.9 $ 687.4