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Stock-based Compensation (Valuation Assumptions) (Details) - TSR Performance Restricted Stock/Units [Member]
3 Months Ended
Oct. 31, 2021
Nov. 01, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Risk-free interest rate 0.45% 0.15%
Expected dividend yield 3.50% 2.85%
Expected volatility 27.43% 29.99%
Expected term, years 3 years 3 years