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NATURE OF OPERATIONS	12 Months Ended
	Aug. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
NATURE OF OPERATIONS	NOTE 1. NATURE OF OPERATIONS Nature of Operations As a vertically integrated organization, Commercial Metals Company ("CMC," and together with its consolidated subsidiaries, the "Company") manufactures, recycles, and markets steel and metal products, related materials and services through a network including eight electric arc furnace ("EAF") mini mills, two EAF micro mills, a rerolling mill, steel fabrication and processing plants, construction-related product warehouses and metal recycling facilities in the United States ("U.S.") and Poland. The Company has four reportable segments: Americas Recycling, Americas Mills, Americas Fabrication and International Mill. Americas Recycling  The Americas Recycling segment processes scrap metals for use as a raw material by manufacturers of new metal products. This segment sells scrap metals to steel mills and foundries, aluminum sheet and ingot manufacturers, brass and bronze ingot makers, copper refineries and mills, secondary lead smelters, specialty steel mills, high temperature alloy manufacturers and other consumers. Americas Mills The Americas Mills segment, through its seven EAF mini mills, two EAF micro mills and rerolling mill, manufactures finished long steel products including reinforcing bar ("rebar"), merchant bar, light structural and other special sections as well as semi-finished billets for re-rolling and forging applications. This segment's products are sold to the construction, service center, transportation, steel warehousing, fabrication, energy, petrochemical and original equipment manufacturing industries. The Americas Mills segment also includes eight scrap metal processing facilities and two scrap metal shredders that directly support the steel mills. Americas Fabrication   The Americas Fabrication segment consists of the Company's rebar fabrication operations, fence post manufacturing facilities, construction-related product facilities and facilities that heat-treat steel to strengthen and provide flexibility. Fabricated steel products are used primarily in the construction of commercial and non-commercial buildings, hospitals, convention centers, industrial plants, power plants, highways, bridges, arenas, stadiums and dams. International Mill The International Mill segment is comprised of the Company's EAF mini mill, recycling and fabrication operations in Poland. This segment manufactures rebar, merchant bar and wire rod as well as semi-finished billets. In addition, this segment's fabrication operations sell fabricated rebar, fabricated mesh, assembled rebar cages and other rebar by-products. The International Mill's products are sold primarily to fabricators, manufacturers, distributors and construction companies.

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- Definition

The entire disclosure for the nature of an entity's business, major products or services, principal markets including location, and the relative importance of its operations in each business and the basis for the determination, including but not limited to, assets, revenues, or earnings. For an entity that has not commenced principal operations, disclosures about the risks and uncertainties related to the activities in which the entity is currently engaged and an understanding of what those activities are being directed toward.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-URI http://asc.fasb.org/topic&trid=2134479

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- References

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