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Fair Value Measurements (Details) - USD ($) $ in Millions | Nov. 30, 2019 | Aug. 31, 2019
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash and cash equivalents | $ 266.6 | $ 461.0
Carrying Value | Senior unsecured public notes, net of unamortized discount and deferred costs |  |
Liabilities: |  |
Carrying and estimated fair values of financial instruments | 350.0 | 349.9
Carrying Value | Industrial revenue bond | Industrial Revenue Bond Maturing in 2021 |  |
Liabilities: |  |
Carrying and estimated fair values of financial instruments | 4.0 | 4.0
Carrying Value | Bank loans |  |
Liabilities: |  |
Carrying and estimated fair values of financial instruments | 2.3 | 2.7
Fair Value | Level 2 | Senior unsecured public notes, net of unamortized discount and deferred costs |  |
Liabilities: |  |
Carrying and estimated fair values of financial instruments | 350.1 | 352.7
Fair Value | Level 2 | Industrial revenue bond | Industrial Revenue Bond Maturing in 2021 |  |
Liabilities: |  |
Carrying and estimated fair values of financial instruments | 4.0 | 4.0
Fair Value | Level 2 | Bank loans |  |
Liabilities: |  |
Carrying and estimated fair values of financial instruments | $ 2.4 | $ 2.9

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3044-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118951113&loc=d3e6676-107765 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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