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STOCK-BASED COMPENSATION PLANS (Restricted Stock Awards and Performance Stock Units Excluding the Cash Component) (Details) (Restricted stock units and performance stock units excluding the cash component, USD $)
12 Months Ended
Aug. 31, 2014
Aug. 31, 2013
Aug. 31, 2012
Restricted stock units and performance stock units excluding the cash component
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Outstanding number, beginning balance 1,907,418 1,683,572 2,394,140
Granted, number 1,275,355 1,159,451 489,118
Vested, number (737,870) (537,303) (773,947)
Forfeited, number (364,323) (398,302) (425,739)
Outstanding number, ending balance 2,080,580 1,907,418 1,683,572
Outstanding, weighted average grant-date fair value, beginning balance $ 13.57 $ 13.16 $ 13.44
Granted, weighted average grant-date fair value $ 16.89 $ 13.60 $ 10.68
Vested, weighted average grant-date fair value $ 13.55 $ 13.35 $ 13.90
Forfeited, weighted average grant-date fair value $ 14.94 $ 12.22 $ 10.56
Outstanding, weighted average grant-date fair value, ending balance $ 15.37 $ 13.57 $ 13.16