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Share Capital, Option Plans And Share-Based Payments (Schedule Of Weighted-Average Fair Value Of Options And Weighted-Average Assumptions Used) (Details) - $ / shares
3 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]    
Weighted-average fair value of options granted (in dollars per share) $ 11.23 $ 14.30
Expected volatility 33.00% 32.00%
Risk–free interest rate 1.48% 1.51%
Expected dividend yield 1.63% 1.15%
Expected life (in years) 4 years 3 months 29 days 4 years 4 months 2 days
Forfeiture rate (based on historical rates) 5.00% 5.00%
Average exercised share price (in dollars per share) $ 45.73 $ 56.33