Stock-Based Compensation - Changes in Stock Options (Details)	9 Months Ended
	Mar. 31, 2017 USD ($) $ / shares shares
Changes in stock options
Options outstanding, June 30, 2016 | shares	2,547,809
Options, Granted | shares	0
Options, Exercised | shares	(250,366)
Options, Lapsed or Forfeited | shares	(183,249)
Options outstanding, March 31, 2017 | shares	2,114,194
Options vested and expected to vest, March 31, 2017 | shares	2,096,072
Options exercisable, March 31, 2017 | shares	1,641,869
Weighted Average Exercise Price, Options outstanding, June 30, 2016 | $ / shares	$ 33.72
Weighted Average Exercise Price, Granted | $ / shares	0.00
Weighted Average Exercise Price, Exercised | $ / shares	28.59
Weighted Average Exercise Price, Lapsed or Forfeited | $ / shares	31.29
Weighted Average Exercise Price, Options outstanding, March 31, 2017 | $ / shares	34.53
Weighted Average Exercise Price, Option vested and expected to vest, March 31, 2017 | $ / shares	34.58
Weighted Average Exercise Price, Options exercisable, March 31, 2017 | $ / shares	$ 35.97
Weighted Average Remaining Life, Options outstanding, March 31, 2017	4 years 2 months 7 days
Weighted Average Remaining Life, Options vested and expected to vest, March 31, 2017	4 years 2 months 7 days
Weighted Average Remaining Life, Options exercisable, March 31, 2017	3 years 1 month
Aggregate Intrinsic value, Options outstanding, March 31, 2017 | $	$ 12,207,000
Aggregate Intrinsic Value, Options vested and expected to vest, March 31, 2017 | $	12,017,000
Aggregate Intrinsic Value, Options exercisable, March 31, 2017 | $	$ 7,382,000