XML 39 R40.htm IDEA: XBRL DOCUMENT
v3.2.0.727

GOODWILL AND OTHER INTANGIBLE ASSETS (Changes in the Carrying Amount of Goodwill) (Details) $ in Thousands | 9 Months Ended
--- | ---
May. 31, 2015 USD ($)
Goodwill [Roll Forward] |
Balance at August 31, 2014 | $ 74,319
Foreign currency translation | (557)
Balance at May 31, 2015 | 73,762
Americas Recycling |
Goodwill [Roll Forward] |
Balance at August 31, 2014 | 7,267
Foreign currency translation | 0
Balance at May 31, 2015 | 7,267
Americas Mills |
Goodwill [Roll Forward] |
Balance at August 31, 2014 | 4,970
Foreign currency translation | 0
Balance at May 31, 2015 | 4,970
Americas Fabrication |
Goodwill [Roll Forward] |
Balance at August 31, 2014 | 57,144
Foreign currency translation | 0
Balance at May 31, 2015 | 57,144
International Mill |
Goodwill [Roll Forward] |
Balance at August 31, 2014 | 2,776
Foreign currency translation | (398)
Balance at May 31, 2015 | 2,378
International Marketing and Distribution |
Goodwill [Roll Forward] |
Balance at August 31, 2014 | 2,162
Foreign currency translation | (159)
Balance at May 31, 2015 | $ 2,003

X
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
Name: | us-gaap_Goodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_GoodwillRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillTranslationAdjustments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=cmc_AmericasRecyclingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=cmc_AmericasMillsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=cmc_AmericasFabricationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=cmc_InternationalMillsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=cmc_InternationalMarketingAndDistributionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |