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Capital Stock (Tables)
12 Months Ended
Sep. 30, 2013
Capital Stock [Abstract]  
Schedule of Common Stock Outstanding Roll Forward [Table Text Block]
The following table reflects the changes in common shares:      
      
Year ended 30 September2013 2012 2011
Number of Common Shares Outstanding     
Balance, beginning of year 212,475,880  210,185,256  213,802,865
Purchase of treasury shares (5,721,017)  (594,916)  (7,433,612)
Issuance of treasury shares for stock option and award plans 4,424,394  2,885,540  3,816,003
Balance, end of year 211,179,257  212,475,880  210,185,256