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Leases Lessor (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Apr. 30, 2021	Apr. 30, 2020	Apr. 30, 2021	Apr. 30, 2020	Jul. 31, 2020
Lessor, Lease, Description [Line Items]
Property Subject to or Available for Operating Lease, Gross	$ 48.5		$ 48.5		$ 64.8
Property Subject to or Available for Operating Lease, Accumulated Depreciation	1.6		1.6		$ 0.9
Operating Lease, Lease Income	$ 3.5	$ 2.8	$ 10.7	$ 3.4

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of operating lease income from lease payments and variable lease payments paid and payable to lessor. Includes, but is not limited to, variable lease payments not included in measurement of lease receivable.

+ References

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-Publisher FASB
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- Definition

Amount of accumulated depreciation of lessor's underlying asset for which right to use has been conveyed to lessee under operating lease.

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Amount, before accumulated depreciation, of lessor's underlying asset for which right to use has been conveyed to lessee under operating lease.

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