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Share-Based Compensation (Weighted Average Assumptions for Options Granted) (Details) (USD $)
12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2011
Share-based Compensation [Abstract]      
Expected term (years) 4 years 7 months 20 days 6 years 9 months 7 days 6 years 10 months 17 days
Expected volatility 42.90% 41.33% 42.92%
Risk-free interest rate 0.64% 1.42% 2.56%
Dividend yield 0.00% 0.00% 0.00%
Weighted average fair value per option $ 10.48 $ 14.94 $ 17.21