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Significant Accounting Policies - Assets Held For Sale (Details) - Held-for-sale $ in Millions	12 Months Ended
	Aug. 31, 2021 USD ($) building	Aug. 31, 2020 USD ($) building
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of buildings classified as held for sale | building	1	3
Assets held for sale, total | $	$ 6.6	$ 4.1

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- Definition

Disposal Group, Including Discontinued Operation, Number of Assets

+ References

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- Definition

Amount classified as assets attributable to disposal group held for sale or disposed of.

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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.

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