Share-Based Compensation (Details 6) (Nonvested stock awards, USD $)	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Nonvested stock awards
Number of Awards
Balance at the beginning of the period (in shares)	419,331	480,741	345,027
Time-based granted (in shares)	22,838	43,408	171,617
Performance-based earned (in shares)	41,816	77,423	131,644
Vested (in shares)	(254,967)	(171,140)	(165,576)
Forfeited (in shares)	(13,603)	(11,101)	(1,971)
Balance at the end of the period (in shares)	215,415	419,331	480,741
Weighted-Average Grant Date Fair Value
Balance at the beginning of the period (in dollars per share)	$ 35.71	$ 28.17	$ 26.63
Time-based granted (in dollars per share)	$ 50.15	$ 49.75	$ 33.10
Performance-based earned (in dollars per share)	$ 47.85	$ 55.69	$ 32.52
Vested (in dollars per share)	$ 31.39	$ 28.00	$ 33.43
Forfeited (in dollars per share)	$ 51.85	$ 21.75	$ 36.64
Balance at the end of the period (in dollars per share)	$ 43.75	$ 35.71	$ 28.17