Stock Compensation Plan (Schedule Of Share Based Compensation Valuation Model) (Details)	12 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	30.00%	31.00%	30.70%
Expected dividends	3.20%	2.10%	3.00%
Risk-free rate, minimum	0.10%	2.70%	0.10%
Risk-free rate, maximum	3.00%	1.20%	0.60%
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (average in years)	6 years 6 months	6 years 4 months 24 days	6 years 7 months 6 days
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (average in years)	6 years 9 months 18 days	6 years 9 months 18 days	6 years 10 months 24 days