Accounting Policies	6 Months Ended
Feb. 28, 2014
Accounting Policies [Abstract]
Accounting policies	NOTE 1. ACCOUNTING POLICIES Accounting Principles The accompanying unaudited 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, 2013 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 consolidated balance sheets and the consolidated statements of operations, comprehensive income (loss), cash flows and stockholders' equity for the periods indicated. These notes should be read in conjunction with the audited consolidated financial statements and notes included in the Annual Report on Form 10-K for the fiscal year ended August 31, 2013. The results of operations for the three and six month periods are not necessarily indicative of the results to be expected for the full year. In the accompanying consolidated statement of cash flows for the six months ended February 28, 2013, the Company corrected the classification of $25.5 million of changes in certain documentary letters of credit from cash flows used by operating activities to cash flows used by financing activities, which decreased cash flows used by operating activities and increased cash flows used by financing activities for that period. The Company considers accounts payable - documentary letters of credit a short-term financing activity and accordingly made this correction in order to properly present the changes in these certain documentary letters of credit as a financing activity in the consolidated statement of cash flows allowing users of its financial statements to better understand the level at which the Company uses documentary letters of credit. This correction did not have an impact on the Company’s consolidated results of operations, earnings per share, balance sheet or net cash flows used by investing activities in the consolidated statement of cash flows for the six months ended February 28, 2013. Recent Accounting Pronouncements In the first quarter of fiscal 2014, the Company adopted guidance issued by the Financial Accounting Standards Board ("FASB") requiring an entity to provide quantitative and qualitative disclosures about the nature of its rights of setoff and related arrangements associated with its financial instruments and derivative instruments. The objective is to make financial statements that are prepared under GAAP more comparable to those prepared under International Financial Reporting Standards. The new disclosures will give financial statement users information about both gross and net exposures. The adoption of this guidance did not have a material impact on the Company's consolidated financial statements. In July 2013, the FASB issued guidance requiring entities to net an unrecognized tax benefit with a deferred tax asset for a net operating loss carryforward, a similar tax loss or a tax credit carryforward. To the extent a net operating loss carryforward, a similar tax loss, or a tax credit carryforward is not available at the reporting date under the tax law of the applicable jurisdiction to settle any additional income taxes that would result from the disallowance of a tax position or the tax law of the applicable jurisdiction does not require the entity to use, and the entity does not intend to use, the deferred tax asset for such purpose, the unrecognized tax benefit should be presented in the financial statements as a liability and should not be combined with deferred tax assets. The new guidance is effective prospectively for fiscal years, and interim periods within those years, beginning after December 15, 2013. The Company does not expect this guidance to have a material impact on its consolidated financial statements. In April 2013, the FASB issued guidance requiring an entity to prepare its financial statements using the liquidation basis of accounting when liquidation is imminent. In addition, the guidance provides principles for the recognition and measurement of assets and liabilities and requirements for financial statements prepared using the liquidation basis of accounting. The new guidance is effective prospectively for entities that determine liquidation is imminent during fiscal years, and interim reporting periods within those years, beginning after December 15, 2013. The Company does not expect this guidance to have a material impact on its consolidated financial statements. In March 2013, the FASB issued guidance requiring an entity to release any related cumulative translation adjustment into net income when it either sells a part or all of its investment in a foreign entity or no longer holds a controlling financial interest in a subsidiary or group of assets that is a nonprofit activity or a business within a foreign entity. In addition, the guidance resolves the diversity in practice for the treatment of business combinations achieved in stages involving a foreign entity. The new guidance is effective prospectively for fiscal years, and interim reporting periods within those years, beginning after December 15, 2013. The Company does not expect the adoption of this guidance to have a material impact on its consolidated financial statements. In February 2013, the FASB issued guidance requiring an entity to measure obligations resulting from joint and several liability arrangements for which the total amount of the obligation is fixed at the reporting date. The guidance also requires entities to disclose the nature and amount of the obligation as well as other information about the obligation. The new guidance is effective retrospectively for fiscal years, and interim reporting periods within those years, beginning after December 15, 2013. The Company does not expect the adoption of this guidance to have a material impact on its consolidated financial statements.

NOTE 1. ACCOUNTING POLICIES

Accounting Principles

The accompanying unaudited 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, 2013 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 consolidated balance sheets and the consolidated statements of operations, comprehensive income (loss), cash flows and stockholders' equity for the periods indicated. These notes should be read in conjunction with the audited consolidated financial statements and notes included in the Annual Report on Form 10-K for the fiscal year ended August 31, 2013. The results of operations for the three and six month periods are not necessarily indicative of the results to be expected for the full year.

In the accompanying consolidated statement of cash flows for the six months ended February 28, 2013, the Company corrected the classification of $25.5 million of changes in certain documentary letters of credit from cash flows used by operating activities to cash flows used by financing activities, which decreased cash flows used by operating activities and increased cash flows used by financing activities for that period. The Company considers accounts payable - documentary letters of credit a short-term financing activity and accordingly made this correction in order to properly present the changes in these certain documentary letters of credit as a financing activity in the consolidated statement of cash flows allowing users of its financial statements to better understand the level at which the Company uses documentary letters of credit. This correction did not have an impact on the Company’s consolidated results of operations, earnings per share, balance sheet or net cash flows used by investing activities in the consolidated statement of cash flows for the six months ended February 28, 2013.

Recent Accounting Pronouncements

In the first quarter of fiscal 2014, the Company adopted guidance issued by the Financial Accounting Standards Board ("FASB") requiring an entity to provide quantitative and qualitative disclosures about the nature of its rights of setoff and related arrangements associated with its financial instruments and derivative instruments. The objective is to make financial statements that are prepared under GAAP more comparable to those prepared under International Financial Reporting Standards. The new disclosures will give financial statement users information about both gross and net exposures. The adoption of this guidance did not have a material impact on the Company's consolidated financial statements.

In July 2013, the FASB issued guidance requiring entities to net an unrecognized tax benefit with a deferred tax asset for a net operating loss carryforward, a similar tax loss or a tax credit carryforward. To the extent a net operating loss carryforward, a similar tax loss, or a tax credit carryforward is not available at the reporting date under the tax law of the applicable jurisdiction to settle any additional income taxes that would result from the disallowance of a tax position or the tax law of the applicable jurisdiction does not require the entity to use, and the entity does not intend to use, the deferred tax asset for such purpose, the unrecognized tax benefit should be presented in the financial statements as a liability and should not be combined with deferred tax assets. The new guidance is effective prospectively for fiscal years, and interim periods within those years, beginning after December 15, 2013. The Company does not expect this guidance to have a material impact on its consolidated financial statements.

In April 2013, the FASB issued guidance requiring an entity to prepare its financial statements using the liquidation basis of accounting when liquidation is imminent. In addition, the guidance provides principles for the recognition and measurement of assets and liabilities and requirements for financial statements prepared using the liquidation basis of accounting. The new guidance is effective prospectively for entities that determine liquidation is imminent during fiscal years, and interim reporting periods within those years, beginning after December 15, 2013. The Company does not expect this guidance to have a material impact on its consolidated financial statements.

In March 2013, the FASB issued guidance requiring an entity to release any related cumulative translation adjustment into net income when it either sells a part or all of its investment in a foreign entity or no longer holds a controlling financial interest in a subsidiary or group of assets that is a nonprofit activity or a business within a foreign entity. In addition, the guidance resolves the diversity in practice for the treatment of business combinations achieved in stages involving a foreign entity. The new guidance is effective prospectively for fiscal years, and interim reporting periods within those years, beginning after December 15, 2013. The Company does not expect the adoption of this guidance to have a material impact on its consolidated financial statements.

In February 2013, the FASB issued guidance requiring an entity to measure obligations resulting from joint and several liability arrangements for which the total amount of the obligation is fixed at the reporting date. The guidance also requires entities to disclose the nature and amount of the obligation as well as other information about the obligation. The new guidance is effective retrospectively for fiscal years, and interim reporting periods within those years, beginning after December 15, 2013. The Company does not expect the adoption of this guidance to have a material impact on its consolidated financial statements.