XML 115 R101.htm IDEA: XBRL DOCUMENT v3.21.2
Share-Based Compensation (Schedule of Assumptions Used to Estimate Fair Value of TSR Portion of Awards Granted) (Details)
12 Months Ended
Aug. 31, 2021
Aug. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expected term (years) 6 years 6 years
Risk-free interest rate 0.50% 1.60%
Volatility 32.80% 28.40%
Dividend yield 1.10% 1.30%
Performance Stock Units [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expected term (years) 3 years  
Risk-free interest rate 0.20%  
Volatility 38.60%  
Dividend yield 1.20%