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Revenue Recognition (Narrative) (Details) - USD ($) $ in Millions | 9 Months Ended |
--- | --- | ---
May 31, 2021 | May 31, 2020 | Aug. 31, 2020
Disaggregation Of Revenue [Line Items] |  |  |
Unsatisfied performance obligation amount | $ 6.8 |  |
Revenue recognized | 16.7 | $ 13.5 |
Other Current Assets [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Contract assets | 1.5 | 0.8 | $ 0.9
Other Current Liabilities [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Contract liabilities | $ 35.5 | $ 16.9 | $ 19.6

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- Definition Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130549-203045 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121556615&loc=SL49130531-203044 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=121556615&loc=SL49130533-203044 + Details
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