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Income Taxes (Reconciliation Of The U.S. Federal Statutory Rate With The Effective Tax Rate) (Details)
12 Months Ended
Nov. 30, 2014
Nov. 30, 2013
Nov. 30, 2012
Income Tax Disclosure [Abstract]      
Federal statutory tax rate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
State income taxes, net of federal benefits 1.30%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes 1.20%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes 1.70%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
International tax at different effective rates (7.00%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential (6.90%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential (6.50%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential
U.S. tax on remitted and unremitted earnings 0.40%mkc_EffectiveIncomeTaxRateReconciliationUnitedStatesTaxOnRemittedAndUnremittedEarnings 0.00%mkc_EffectiveIncomeTaxRateReconciliationUnitedStatesTaxOnRemittedAndUnremittedEarnings (2.00%)mkc_EffectiveIncomeTaxRateReconciliationUnitedStatesTaxOnRemittedAndUnremittedEarnings
U.S. manufacturing deduction (1.60%)us-gaap_EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities (1.80%)us-gaap_EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities (1.60%)us-gaap_EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities
Changes in prior year tax contingencies (2.00%)us-gaap_EffectiveIncomeTaxRateReconciliationTaxContingencies 0.30%us-gaap_EffectiveIncomeTaxRateReconciliationTaxContingencies (0.10%)us-gaap_EffectiveIncomeTaxRateReconciliationTaxContingencies
Other, net 0.20%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments (1.00%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments 0.10%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments
Total 26.30%us-gaap_EffectiveIncomeTaxRateContinuingOperations 26.80%us-gaap_EffectiveIncomeTaxRateContinuingOperations 26.60%us-gaap_EffectiveIncomeTaxRateContinuingOperations