Leases - Schedule of Other Information Related to Leases (Details) $ in Millions	12 Months Ended
	Aug. 31, 2020 USD ($)
Leases [Abstract]
Weighted average remaining lease term (in years)	10 years 1 month 6 days
Weighted average discount rate (incremental borrowing rate)	4.20%
Cash paid for amounts included in the measurement of lease liabilities	$ 39.7
Lease ROU assets obtained in exchange for lease liabilities	$ 43.7