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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 - $ / shares
12 Months Ended
Aug. 31, 2021
Aug. 31, 2020
Aug. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Outstanding number, beginning balance 2,245,637 2,279,568 1,800,718
Granted, number 1,519,153 1,529,212 1,505,449
Vested, number (1,451,846) (1,417,552) (992,167)
Forfeited, number (122,149) (145,591) (34,432)
Outstanding number, ending balance 2,190,795 2,245,637 2,279,568
Outstanding, weighted average grant-date fair value, beginning balance $ 18.79 $ 15.99 $ 16.82
Granted, weighted average grant-date fair value 20.49 18.32 17.75
Vested, weighted average grant-date fair value 17.62 18.80 20.09
Forfeited, weighted average grant-date fair value 20.19 21.35 17.90
Outstanding, weighted average grant-date fair value, ending balance $ 20.67 $ 18.79 $ 15.99