Stock-Based Compensation - Changes in Restricted Stock Units (Details) - 12 months ended Jun. 30, 2015 - $ / shares	Total
Restricted Stock Units - Performance Vesting [Member]
Changes in Restricted Stock Units
Unvested Performance Vesting and Time Vesting Restricted Stock Units, Beginning of Period, Shares	197,356
Granted, Shares	88,536
Vested, Shares	(28,022)
Performance Metric Not Achieved	(65,373)
Forfeited, Shares	(91,252)
Unvested Performance Vesting and Time Vesting Restricted Stock Units End of Period	101,245
Weighted Average Fair Value, Unvested Restricted Stock Units, Beginning of Period	$ 40.92
Weighted Average Fair Value, Granted	43.16
Weighted Average Fair Value, Vested	38.95
Performance Metric Not Achieved, Weighted Average Exercise Price	43.16
Weighted Average Fair Value, Forfeited	42.96
Weighted Average Fair Value, Unvested Restricted Stock Units, End of Period	$ 43.00
Restricted Stock Units - Time Vesting [Member]
Changes in Restricted Stock Units
Unvested Performance Vesting and Time Vesting Restricted Stock Units, Beginning of Period, Shares	743,326
Granted, Shares	455,296
Vested, Shares	(385,321)
Forfeited, Shares	(124,033)
Unvested Performance Vesting and Time Vesting Restricted Stock Units End of Period	689,268
Weighted Average Fair Value, Unvested Restricted Stock Units, Beginning of Period	$ 39.20
Weighted Average Fair Value, Granted	42.00
Weighted Average Fair Value, Vested	37.42
Weighted Average Fair Value, Forfeited	42.20
Weighted Average Fair Value, Unvested Restricted Stock Units, End of Period	$ 41.53