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Revenue Costs to Obtain Contracts with Customers (Details)
$ in Millions
3 Months Ended 9 Months Ended
Apr. 30, 2021
USD ($)
Apr. 30, 2021
USD ($)
Cost of Revenue [Abstract]    
Capitalized Contract Cost, Net $ 1.0 $ 1.0
Capitalized Contract Cost, Amortization $ 8.6 $ 16.4