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STOCK-BASED COMPENSATION PLANS (Yearly Activity of Stock Purchase Plan) (Details) - $ / shares
12 Months Ended
Aug. 31, 2015
Aug. 31, 2014
Aug. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares available for future issuance 12,744,798    
Employee stock purchase plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares subscribed 198,710 228,780 281,460
Price per share $ 13.73 $ 16.97 $ 12.61
Shares purchased 172,170 221,570 211,580
Price per share $ 16.96 $ 12.61 $ 11.85
Shares available for future issuance 3,810,924