Revenue Recognition (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
Aug. 31, 2023	Aug. 31, 2022
Deferred revenue	$ 111.2	$ 102.4
Remaining performance obligations	186.4
Other Long-Term Liabilities [Member]
Deferred revenue	$ 3.7	2.7
Minimum [Member]
Receivables collection period	30 days
Maximum [Member]
Receivables collection period	150 days
Direct Sales Commissions [Member]
Capitalized contract cost	$ 15.3	13.8
Direct Sales Commissions [Member] \| Other Current Assets [Member]
Capitalized contract cost	14.4	12.6
Direct Sales Commissions [Member] \| Other Long-Term Liabilities [Member]
Capitalized contract cost	0.9	1.2
Obtain Revenue Contracts [Member]
Capitalized contract cost	23.5
Selling, General, And Administrative Expense [Member]
Capitalized contract cost, amortized	22.0
Subscription Offerings [Member]
Deferred revenue	99.0	88.1
Subscription [Member]
Deferred revenue recognized	$ 139.0	$ 123.1

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Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 340
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
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-Publisher FASB
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Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 340
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-Section 50
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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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