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DERIVATIVES AND RISK MANAGEMENT (Narrative) (Details) - USD ($)
$ in Millions
Aug. 31, 2019
Aug. 31, 2018
Foreign exchange    
Derivative [Line Items]    
Notional value of contract commitments $ 94.1 $ 119.5
Commodity    
Derivative [Line Items]    
Notional value of contract commitments $ 42.6 $ 55.2