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Leases - Narrative (Details)
$ in Millions
 6 Months Ended
Jan. 31, 2022
USD ($)
optionToExtend
Lessee, Lease, Description [Line Items]  
Number of options to extend | optionToExtend 1
Option to extend operating leases 10 years
Option to extend sublease 5 years
Operating lease not yet commenced | $ $ 166
Term for leases not yet commenced 13 years 6 months
Maximum  
Lessee, Lease, Description [Line Items]  
Operating lease terms 11 years
Operating sublease terms 3 years