Share-Based Compensation (Details Textual) (USD $) In Millions, except Share data, unless otherwise specified	9 Months Ended
	Mar. 31, 2012
Stock Option [Member]
Schedule of Share Based Compensation (Textual) [Abstract]
Aggregate intrinsic value of stock option outstanding calculated using the closing price of common stock	$ 36.51
Deferred stock unit [Member]
Schedule of Share Based Compensation (Textual) [Abstract]
Aggregate intrinsic value of stock option outstanding calculated using the closing price of common stock	$ 36.51
Shares valued withheld to meet statutory minimum tax withholding requirements	$ 2.6
Shares withheld to meet statutory minimum tax withholding requirements	79,719