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Fair Value Measurements (Tables) | 12 Months Ended
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Aug. 31, 2019
Fair Value Disclosures [Abstract] |
Schedule of Carrying Value and Estimated Fair Value of Financial Instruments | The carrying values and estimated fair values of certain financial instruments were as follows at August 31, 2019 and 2018 (in millions):
| August 31, 2019 |  | August 31, 2018
| Carrying Value |  | Fair Value |  | Carrying Value |  | Fair Value
Senior unsecured public notes, net of unamortized discount and deferred costs | $ | 349.9 |  |  | $ | 352.7 |  |  | $ | 349.5 |  |  | $ | 361.7 |
Industrial revenue bond | 4.0 |  |  | 4.0 |  |  | 4.0 |  |  | 4.0 |
Bank loans | 2.7 |  |  | 2.9 |  |  | 3.3 |  |  | 3.3 |

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- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13467-108611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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