Leases - Narrative (Details) - Real Estate	9 Months Ended
	Apr. 30, 2020 option contract
Lessee, Lease, Description [Line Items]
Number of lease contracts | contract	90
Number of renewal options | option	1
Minimum
Lessee, Lease, Description [Line Items]
Lease term	1 year
Maximum
Lessee, Lease, Description [Line Items]
Lease term	16 years