XML 33 R76.htm IDEA: XBRL DOCUMENT
v3.3.0.814

DERIVATIVES AND RISK MANAGEMENT (Effective Portion of Derivatives Designated as Cash Flow Hedging Instruments Reclassified from Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Aug. 31, 2015 | Aug. 31, 2014 | Aug. 31, 2013
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gain (loss) before income taxes | $ (2,707) | $ (1,505) | $ 465
Income tax (expense) benefit | 949 | 237 | (128)
Gain (loss), net of income taxes | (1,758) | (1,268) | 337
Commodity | Cost of goods sold |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gain (loss) before income taxes | (665) | (160) | (260)
Foreign exchange | Cost of goods sold |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gain (loss) before income taxes | (2,774) | (1,717) | 18
Foreign exchange | Net sales |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gain (loss) before income taxes | 124 | (213) | 73
Foreign exchange | SG&A expenses |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gain (loss) before income taxes | 76 | 53 | 17
Interest rate | Interest expense |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gain (loss) before income taxes | $ 532 | $ 532 | $ 617

X
- Definition Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Taxes + References No definition available. + Details
Name: | cmc_DerivativeInstrumentsGainLossReclassifiedfromAccumulatedOCIintoIncomeEffectivePortionTaxes
Namespace Prefix: | cmc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, before Taxes + References No definition available. + Details
Name: | cmc_DerivativeInstrumentsGainLossReclassifiedfromAccumulatedOCIintoIncomeEffectivePortionbeforeTaxes
Namespace Prefix: | cmc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DerivativeInstrumentsGainLossLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4D -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624177-113959 + Details
Name: | us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_CommodityContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_CostOfSalesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_SalesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_OperatingExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_InterestExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |