Share-Based Compensation (Stock Option Plans) (Details) (USD $)	12 Months Ended
	Jun. 30, 2011 years	Jun. 30, 2010	Jun. 30, 2009
Outstanding, beginning of year, Options	2,198,900
Outstanding, beginning of year, Weighted-Average Exercise Price	$ 25.58
Granted during the period, Options	165,000
Granted during the period, Weighted Average Exercise Price	$ 36.11
Exercised during the period, Options	(362,805)
Exercised during the period, Weighted-Average Exercise Price	$ 19.36
Cancelled, forfeited, or expired during the period, Options	(31,618)
Cancelled, forfeited, or expired during the period, Weighted-Average Exercise Price	$ 32.89
Outstanding, end of year, Options	1,969,477	2,198,900
Outstanding, end of year, Weighted-Average Exercise Price	$ 27.47	$ 25.58
Outstanding, end of year, Weighted-Average Remaining Contractual Life (years)	6.10
Outstanding, end of year, Aggregate Intrinsic Value	$ 19,712,906
Vested and expected to vest, Options	1,968,468
Vested and expected to vest, Weighted-Average Exercise Price	$ 27.47
Vested and expected to vest, Weighted-Average Remaining Contractual Life (years)	6.10
Vested and expected to vest, Aggregate Intrinsic Value	19,701,875
Exercisable, end of Year, Options	1,524,467
Exercisable, end of year, Weighted-Average Exercise Price	$ 27.82
Exercisable, end of Year, Weighted-Average Remaining Contractual Life (years)	5.38
Exercisable, end of Year, Aggregate Intrinsic Value	$ 14,731,784
Granted during period, Weighted Average Grand Date Fair-Value	$ 17.21	$ 12.43	$ 7.49
Unvested Shares [Member]
Outstanding, beginning of year, Options	622,307
Outstanding, beginning of year, Weighted-Average Exercise Price	$ 22.98
Granted during the period, Options	165,000
Granted during the period, Weighted Average Exercise Price	$ 36.11
Vested during period, Options	(339,262)
Vested during period, Weighted Average Exercise Price	$ 25.06
Cancelled, forfeited, or expired during the period, Options	(3,035)
Cancelled, forfeited, or expired during the period, Weighted-Average Exercise Price	$ 19.96
Outstanding, end of year, Options	445,010
Outstanding, end of year, Weighted-Average Exercise Price	$ 26.29
Outstanding, beginning of year, Weighted Average Grants Date Fair-Value	$ 9.79
Granted during period, Weighted Average Grand Date Fair-Value	$ 17.21
Vested during period, Weighted Average Grant Date Fair-Value	$ 10.20
Cancelled or forfeited during period, Weighted Average Grant Date Fair-Value	$ 6.28
Outstanding, end of year, Weighted Average Grants Date Fair-Value	$ 12.25