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Share Capital, Option Plans And Share-Based Payments Share Capital, Option Plans And Share-Based Payments (Schedule of Long Term Incentive Plan Expense) (Details) (USD $)
12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Unvested stock awards compensation cost, weighted average recognition period 3 years 2 months 1 day    
Long Term Incentive Plan [Member]
     
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Allocated share-based compensation expense $ 8,281,000 $ 12,842,000 $ 7,343,000
Expected share-based compensation expense 40,306,000    
Compensation cost recognized to date 30,000,000    
Compensation cost not yet recognized 10,300,000    
Unvested stock awards compensation cost, weighted average recognition period 1 year 11 months 5 days    
Performance Stock Units (PSUs) [Member] | Fiscal 2012 LTIP
     
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Allocated share-based compensation expense 579,000 9,284,000 5,964,000
Expected share-based compensation expense 17,314,000    
Performance Stock Units (PSUs) [Member] | Fiscal 2013 LTIP
     
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Allocated share-based compensation expense 2,999,000 1,896,000 1,379,000
Expected share-based compensation expense 6,489,000    
Performance Stock Units (PSUs) [Member] | Fiscal 2014 LTIP
     
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Allocated share-based compensation expense 2,832,000 1,662,000 0
Expected share-based compensation expense 8,046,000    
Performance Stock Units (PSUs) [Member] | Fiscal 2015 LTIP
     
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Allocated share-based compensation expense 588,000 0 0
Expected share-based compensation expense 2,858,000    
Restricted Stock Units (RSUs) [Member] | Fiscal 2015 LTIP
     
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Allocated share-based compensation expense 1,283,000 0 0
Expected share-based compensation expense $ 5,599,000