XML 100 R69.htm IDEA: XBRL DOCUMENT v2.4.0.6
Share Capital, Option Plans And Share-Based Payments (Schedule Of Weighted-Average Fair Value Of Options And Weighted-Average Assumptions Used) (Details) (USD $)
3 Months Ended 6 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2011
Dec. 31, 2010
Share Capital, Option Plans And Share-Based Payments [Abstract]        
Weighted-average fair value of options granted $ 17.99 $ 14.97 $ 17.71 $ 14.97
Expected volatility 41.00% 40.00% 41.00% 40.00%
Risk-free interest rate 0.74% 1.40% 0.79% 1.40%
Expected dividend yield 0.00% 0.00% 0.00% 0.00%
Expected life (in years) 4.3 4.3 4.3 4.3
Forfeiture rate (based on historical rates) 5.00% 5.00% 5.00% 5.00%