Quarterly Financial Data	9 Months Ended
Quarterly Financial Data	May 31, 2012
Quarterly Financial Information Disclosure [Abstract]
Quarterly financial data	NOTE 1 — QUARTERLY FINANCIAL DATA The accompanying unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States on a basis consistent with that used in the Annual Report on Form 10-K filed by Commercial Metals Company (the “Company”) with the Securities and Exchange Commission (“SEC”) for the year ended August 31, 2011, and include all normal recurring adjustments necessary to present fairly the consolidated statements of operations, consolidated balance sheets, consolidated statements of cash flows and stockholders’ equity for the periods indicated. The accompanying unaudited financial statements should be read in conjunction with the Company’s audited financial statements and notes thereto contained in such Form 10-K. The results of operations for the three and nine month periods are not necessarily indicative of the results expected for the full year.

The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished.

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