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Fair Value Measurements | 9 Months Ended
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May 31, 2019
Fair Value Disclosures [Abstract] |
Fair Value Measurements | Fair Value Measurements We determine fair value measurements based on the assumptions a market participant would use in pricing an asset or liability. ASC 820, Fair Value Measurements and Disclosures (“ASC 820”), establishes a three level hierarchy making a distinction between market participant assumptions based on (i) unadjusted quoted prices for identical assets or liabilities in an active market (Level 1), (ii) quoted prices in markets that are not active or inputs that are observable either directly or indirectly for substantially the full term of the asset or liability (Level 2), and (iii) prices or valuation techniques that require inputs that are both unobservable and significant to the overall fair value measurement (Level 3). Our cash and cash equivalents (Level 1), which are required to be carried at fair value and measured on a recurring basis, were $333.7 million and $129.1 million as of May 31, 2019 and August 31, 2018, respectively. We utilize valuation methodologies to determine the fair values of our financial assets and liabilities in conformity with the concepts of “exit price” and the fair value hierarchy as prescribed in ASC 820. All valuation methods and assumptions are validated at least quarterly to ensure the accuracy and relevance of the fair values. There were no material changes to the valuation methods or assumptions used to determine fair values during the current period. We used quoted market prices to determine the fair value of Level 1 assets and liabilities. No transfers between the levels of the fair value hierarchy occurred during the current fiscal period. In the event of a transfer in or out of a level within the fair value hierarchy, the transfers would be recognized on the date of occurrence. Disclosures of fair value information about financial instruments (whether or not recognized in the balance sheet), for which it is practicable to estimate that value, are required each reporting period in addition to any financial instruments carried at fair value on a recurring basis as prescribed by ASC 825, Financial Instruments (“ASC 825”). In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques. Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. The carrying values and estimated fair values of certain of our financial instruments were as follows at May 31, 2019 and August 31, 2018 (in millions):
| May 31, 2019 |  | August 31, 2018
| Carrying Value |  | Fair Value |  | Carrying Value |  | Fair Value
Senior unsecured public notes, net of unamortized discount and deferred costs | $ | 349.8 |  |  | $ | 355.1 |  |  | $ | 349.5 |  |  | $ | 361.7 |
Industrial revenue bond | 4.0 |  |  | 4.0 |  |  | 4.0 |  |  | 4.0 |
Bank loans | 2.8 |  |  | 3.0 |  |  | 3.3 |  |  | 3.3 |
The senior unsecured public notes are carried at the outstanding balance, net of unamortized bond discount and deferred costs, as of the end of the reporting period. Fair value is estimated based on discounted future cash flows using rates currently available for debt of similar terms and maturity (Level 2). The industrial revenue bond is carried at the outstanding balance as of the end of the reporting period. The industrial revenue bond is a tax-exempt, variable-rate instrument that resets on a weekly basis; therefore, we estimate that the face amount of the bond approximates fair value as of May 31, 2019 based on bonds of similar terms and maturity (Level 2). The bank loans are carried at the outstanding balance as of the end of the reporting period. Fair value is estimated based on discounted future cash flows using rates currently available for debt of similar terms and maturity (Level 2). ASC 825 excludes certain financial instruments and all nonfinancial instruments from its disclosure requirements. Accordingly, the aggregate fair value amounts presented do not represent the underlying value to us. In many cases, the fair value estimates cannot be substantiated by comparison to independent markets, nor can the disclosed value be realized in immediate settlement of the instruments. In evaluating our management of liquidity and other risks, the fair values of all assets and liabilities should be taken into consideration, not only those presented above.

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- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -URI http://asc.fasb.org/topic&trid=2155941 + Details
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