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Accounting Policies and Recent Accounting Pronouncement - Capitalized Software (Details) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Accounting Policies [Abstract]    
Capitalized software development costs $ 53.5 $ 38.6
Additions related to capitalized software development costs $ 14.9 $ 18.6