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Income Taxes (Differences Between Income Taxes At The Statutory Federal Income Tax Rate And Income Taxes From Continuing Operations) (Details)
12 Months Ended
Aug. 31, 2022
Aug. 31, 2021
Aug. 31, 2020
Income Taxes [Abstract]      
Federal statutory income tax rate (21.00%) (21.00%) (21.00%)
State income taxes, net of federal effect (3.90%) (1.60%) 16.90%
Valuation allowance 12.90% 173.60% (1412.90%)
Foreign tax credit carryforward reduction   (13.00%)  
Executive stock options   7.70% 199.90%
Foreign jurisdictions tax differential (1.10%) (4.00%) 1.40%
Tax differential on income subject to both U.S. and foreign taxes (0.20%) (0.70%) 11.90%
Uncertain tax positions (0.80%) (3.00%) 13.80%
Non-deductible executive compensation (5.50%) (5.80%) (18.20%)
Non-deductible meals and entertainment (0.10%) (0.20%) (22.30%)
Other stock-based compensation 2.50%    
Payout of deferred compensation (NQDC)     6.10%
Other 0.70% (7.80%) (59.30%)
Income tax rate (16.50%) 124.20% (1283.70%)