Share-Based Compensation - Summary of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Number of Awards
Exercised (in shares)	(95,089)	(19,627)	(73,067)
Stock options
Number of Awards
Balance at the beginning of the period (in shares)	1,701,502	1,507,878	1,063,895
Granted (in shares)	907,141	277,769	702,411
Exercised (in shares)	(95,289)	(19,627)	(73,067)
Cancelled (in shares)	(80,926)	(64,518)	(185,361)
Expired (in shares)	(40,000)
Balance at the end of the period (in shares)	2,392,428	1,701,502	1,507,878
Weighted Average Exercise Price
Balance at the beginning of the period (in dollars per share)	$ 43.35	$ 44.61	$ 42.69
Granted (in dollars per share)	38.98	36.31	48.28
Exercised (in dollars per share)	23.21	25.12	31.53
Cancelled (in dollars per share)	44.35	47.98	52.67
Expired (in dollars per share)	55.12
Balance at the end of the period (in dollars per share)	$ 42.27	$ 43.35	$ 44.61
Additional disclosures
Weighted Average Remaining Contractual Term	7 years 1 month 6 days
Aggregate Intrinsic Value	$ 2.8
Number of awards, exercisable (in shares)	1,350,727
Weighted Average Exercise Price, Exercisable (in dollars per share)	$ 44.70
Weighted Average Remaining Contractual Term, Exercisable	5 years 8 months
Aggregate Intrinsic Value, Exercisable	$ 2.7