XML 28 R73.htm IDEA: XBRL DOCUMENT v3.3.0.814
Capital Stock (Details) - shares
 12 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2013
Outstanding Shares [Roll Forward]      
Shares outstanding 159,760,671 158,234,300 156,840,648
Exercised stock options 506,632 587,964 384,475
Exercise of employee stock purchase plan 212,550 204,360 290,173
Vesting of restricted stock units, net of shares withheld 541,839 734,047 719,004
Treasury Stock, Shares, Acquired (523,851)    
Shares outstanding 160,497,841 159,760,671 158,234,300