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INCOME TAX (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended 12 Months Ended
Feb. 28, 2019
Feb. 28, 2018
Feb. 28, 2019
Feb. 28, 2018
Aug. 31, 2018
Operating Loss Carryforwards [Line Items]          
Effective income tax rate from continuing operations 54.90% 15.00% 40.90% 19.60%  
Blended federal statutory income tax rate (percent)       25.70%  
Effective tax rate from discontinued operation (percent)       36.60%  
Unrecognized income tax benefits $ 6.2   $ 6.2   $ 3.1
Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Provisional Income Tax Expense (Benefit)         $ 11.0
Tax Cuts And Jobs Act Of 2017, Additional Income Tax Expense (Benefit) $ 7.6        
Poland          
Operating Loss Carryforwards [Line Items]          
Statutory income tax rate     19.00%