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ACCOUNTING POLICIES (Policies) | 9 Months Ended
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May 31, 2018
Accounting Policies [Abstract] |
Accounting principles | Accounting Principles The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States ("GAAP") on a basis consistent with that used in the Annual Report on Form 10-K for the fiscal year ended August 31, 2017 ("2017 Form 10-K") filed by Commercial Metals Company ("CMC," and together with its consolidated subsidiaries, the "Company") with the Securities and Exchange Commission ("SEC") and include all normal recurring adjustments necessary to present fairly the unaudited condensed consolidated balance sheets and the unaudited condensed consolidated statements of earnings, comprehensive income, cash flows and stockholders' equity for the periods indicated. These notes should be read in conjunction with the audited consolidated financial statements included in the 2017 Form 10-K. The results of operations for the three and nine month periods are not necessarily indicative of the results to be expected for the full fiscal year.
Recent accounting pronouncements | Recently Issued Accounting Pronouncements In August 2017, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2017-12, Derivatives and Hedging (Topic 815). The ASU better aligns accounting rules with a company's risk management activities; better reflects economic results of hedging in financial statements; and simplifies hedge accounting treatment. For public companies, this standard is effective for annual periods beginning after December 15, 2018, including interim periods within those periods. The standard must be applied to hedging relationships existing on the date of adoption, and the effect of adoption should be reflected as of the beginning of the fiscal year of adoption. The Company is currently evaluating the impact of this guidance on its consolidated financial statements as well as determining the Company's planned adoption date. In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230), requiring that the statement of cash flows explain the change in the total cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. This guidance is effective for fiscal years, and interim reporting periods therein, beginning after December 15, 2017 and will be effective for the Company beginning September 1, 2018. The Company plans to early adopt ASU 2016-18 in the fourth quarter of fiscal 2018. The provisions of this guidance are to be applied using a retrospective approach, which requires application of the guidance for all periods presented. The Company is currently evaluating the impact of this guidance on its consolidated financial statements. In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows: Classification of Certain Cash Receipts and Cash Payments (Topic 230). ASU 2016-15 is intended to reduce diversity in practice in how certain cash receipts and cash payments are presented in the statement of cash flows. This guidance is effective for fiscal years, and interim reporting periods therein, beginning after December 15, 2017, with early adoption permitted. The Company plans to adopt ASU 2016-15 no later than the required adoption date of September 1, 2018. The provisions of this guidance are to be adopted retrospectively. The Company is continuing to evaluate the impact this guidance will have on its consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), and has modified the standard thereafter. The standard requires a lessee to recognize a right-of-use asset and a lease liability on its balance sheet for all leases with terms of twelve months or longer. This guidance is effective for fiscal years, and interim reporting periods therein, beginning after December 15, 2018 and will be effective for the Company beginning September 1, 2019, at which point the Company plans to adopt the standard. The provisions of this guidance are to be applied using a modified retrospective approach, with elective reliefs, which requires application of the guidance for all periods presented. The Company has a project plan in place to address the effects of ASU 2016-02 and any modifications thereafter, including evaluation of the impact of this guidance on internal processes and systems, internal controls, and its consolidated financial statements. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606), and has modified the standard thereafter. Under the standard, revenue is recognized when a customer obtains control of promised goods or services and is recognized in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This guidance is effective for annual and interim reporting periods beginning after December 15, 2017 and will be effective for the Company beginning September 1, 2018, at which point the Company plans to adopt the standard. The standard permits the use of either the retrospective or cumulative effect transition method. The Company currently expects to adopt the standard using the modified retrospective method. Upon adoption of ASU 2014-09, for certain contracts within the Americas Fabrication segment in which revenue is currently recognized on a percentage of completion basis using a cost-to-cost measure of progress, the measure of progress will change to an output measure to align with the pattern of transfer of control on these contracts. In addition, the standard includes expanded disclosure requirements, which the Company continues to analyze. The Company believes the adoption of this standard will not have a material impact on its statement of financial position, results of operations or cash flows. As part of the overall evaluation of the standard, the Company is also identifying and preparing to implement changes to its accounting policies, practices, and internal controls over financial reporting to support the standard both in the transition period as well as on an on-going basis.
Fair value measurement | The Company has established a fair value hierarchy which prioritizes the inputs to the valuation techniques used to measure fair value into three levels. These levels are determined based on the lowest level input that is significant to the fair value measurement. Levels within the hierarchy are defined as follows: Level 1 - Unadjusted quoted prices in active markets for identical assets and liabilities; Level 2 - Quoted prices for similar assets and liabilities in active markets (other than those included in Level 1) which are observable, either directly or indirectly; and Level 3 - Valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable.
Uncertain income tax positions | The Company's policy classifies interest recognized on an underpayment of income taxes and any statutory penalties recognized on a tax position as income tax expense.

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- Definition Disclosure of accounting policy for basis of accounting, or basis of presentation, used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS). + References No definition available. + Details
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- Definition Disclosure of accounting policy for fair value measurements of financial and non-financial assets, liabilities and instruments classified in shareholders' equity. Disclosures include, but are not limited to, how an entity that manages a group of financial assets and liabilities on the basis of its net exposure measures the fair value of those assets and liabilities. + References No definition available. + Details
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- Definition Disclosure of accounting policy for tax positions taken in the tax return filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other types of contingencies related to income taxes. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32840-109319 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 05 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=115928150&loc=d3e26513-109311 + Details
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- Definition Disclosure of accounting policy pertaining to new accounting pronouncements that may impact the entity's financial reporting. Includes, but is not limited to, quantification of the expected or actual impact. + References No definition available. + Details
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