Leases (Weighted Average Lease Term And Discount Rate) (Details)	Jul. 31, 2022	Jul. 31, 2021
Leases [Abstract]
Operating Leases: Weighted average remaining lease term (months)	43 months 12 days	52 months 27 days
Operating Leases: Weighted average discount rate	3.20%	3.10%
Finance Leases: Weighted average remaining lease term (months)	36 months 10 days	23 months 29 days
Finance Leases: Weighted average discount rate	9.50%	8.20%