Leases, Weighted-average Lease Terms and Discount Rates (Details)	Aug. 31, 2021	Aug. 31, 2020
Leases [Abstract]
Operating leases, remaining term	6 years 2 months 12 days	6 years 3 months 18 days
Finance leases, remaining term	3 years 7 months 6 days	3 years 9 months 18 days
Operating leases, weighted average discount rate	4.451%	4.283%
Finance leases, weighted average discount rate	4.079%	4.27%