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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 $)
 3 Months Ended 9 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2014
Mar. 31, 2013
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Unvested stock awards compensation cost, weighted average recognition period     3 years  
Long Term Incentive Plan
        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Expected share-based compensation expense     $ 48,752,000  
Allocated share-based compensation expense 1,316,000 1,845,000 8,779,000 4,882,000
Compensation cost recognized to date 38,700,000   38,700,000  
Compensation cost not yet recognized 10,100,000   10,100,000  
Unvested stock awards compensation cost, weighted average recognition period     2 years  
Employee Share Purchase Plan [Member]
        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Cash received from employee stock purchase plan 800,000 600,000 2,100,000 1,600,000
Performance Stock Units (PSUs) [Member] | Fiscal 2012 LTIP
        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Expected share-based compensation expense     17,314,000  
Allocated share-based compensation expense 0 0 0 579,000
Performance Stock Units (PSUs) [Member] | Fiscal 2013 LTIP
        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Expected share-based compensation expense     6,489,000  
Allocated share-based compensation expense 0 272,000 215,000 870,000
Performance Stock Units (PSUs) [Member] | Fiscal 2014 LTIP
        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Expected share-based compensation expense     7,969,000  
Allocated share-based compensation expense 574,000 787,000 2,535,000 2,184,000
Performance Stock Units (PSUs) [Member] | Fiscal 2015 LTIP
        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Expected share-based compensation expense     2,863,000  
Allocated share-based compensation expense 199,000 277,000 951,000 363,000
Performance Stock Units (PSUs) [Member] | Fiscal 2016 LTIP
        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Expected share-based compensation expense     2,045,000  
Allocated share-based compensation expense 173,000 0 289,000 0
Restricted Stock Units (RSUs) [Member] | Fiscal 2015 LTIP
        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Expected share-based compensation expense     4,255,000  
Allocated share-based compensation expense 43,000 509,000 892,000 886,000
Restricted Stock Units (RSUs) [Member] | Fiscal 2016 LTIP
        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Expected share-based compensation expense     4,517,000  
Allocated share-based compensation expense 327,000 0 597,000 0
Restricted Stock Units (RSUs fully vested) [Member] | Fiscal 2016 LTIP
        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Expected share-based compensation expense     3,300,000  
Allocated share-based compensation expense $ 0 $ 0 $ 3,300,000 $ 0