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Share Capital, Option Plans and Share-Based Payments (Summary of Stock Options Outstanding Under Various Stock Option Plans) (Details) - $ / shares
12 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2014
Share-based Compensation Arrangement By Share-based Payment Award [Line Items]      
Options grated to date (in shares) 737,640 1,368,410  
Options exercised to date (in shares) (468,295) (476,103)  
Options outstanding (in shares) 4,177,408 4,375,365 4,273,226
1998 Stock Option Plan      
Share-based Compensation Arrangement By Share-based Payment Award [Line Items]      
Options grated to date (in shares) 15,828,580    
Options exercised to date (in shares) (10,718,360)    
Options cancelled to date (in shares) (5,110,220)    
Options outstanding (in shares) 0    
Vesting schedule (amount per year) 25.00%    
2004 Stock Option Plan      
Share-based Compensation Arrangement By Share-based Payment Award [Line Items]      
Options grated to date (in shares) 13,463,382    
Options exercised to date (in shares) (6,154,402)    
Options cancelled to date (in shares) (3,131,572)    
Options outstanding (in shares) 4,177,408    
Vesting schedule (amount per year) 25.00%    
Exercise price, lower limit (in dollars per share) $ 18.67    
Exercise price, upper limit (in dollars per share) $ 57.30    
Minimum | 1998 Stock Option Plan      
Share-based Compensation Arrangement By Share-based Payment Award [Line Items]      
Termination grace periods 90 days    
Minimum | 2004 Stock Option Plan      
Share-based Compensation Arrangement By Share-based Payment Award [Line Items]      
Termination grace periods 90 days    
Maximum | 1998 Stock Option Plan      
Share-based Compensation Arrangement By Share-based Payment Award [Line Items]      
Termination grace periods 180 days    
Maximum | 2004 Stock Option Plan      
Share-based Compensation Arrangement By Share-based Payment Award [Line Items]      
Termination grace periods 180 days