Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) (USD $) In Millions, unless otherwise specified	Nov. 30, 2014	Nov. 30, 2013
Income Tax Disclosure [Abstract]
Deferred tax assets, Employee benefit liabilities	$ 145.0	$ 110.3
Deferred tax assets, Other accrued liabilities	23.9	23.5
Deferred tax assets, Inventory	10.8us-gaap_DeferredTaxAssetsInventory	11.1us-gaap_DeferredTaxAssetsInventory
Deferred tax assets, Tax loss and credit carry forwards	38.9	41.4
Deferred tax assets, Other	11.7us-gaap_DeferredTaxAssetsOther	9.5us-gaap_DeferredTaxAssetsOther
Deferred tax assets, Valuation allowance	(21.8)	(21.2)
Deferred tax assets, total	208.5us-gaap_DeferredTaxAssetsNet	174.6us-gaap_DeferredTaxAssetsNet
Deferred tax liabilities, Depreciation	38.8mkc_DeferredTaxLiabilitiesDepreciation	45.3mkc_DeferredTaxLiabilitiesDepreciation
Deferred tax liabilities, Intangible assets	192.6	178.2
Deferred tax liabilities, Other	8.7us-gaap_DeferredTaxLiabilitiesOther	7.4us-gaap_DeferredTaxLiabilitiesOther
Deferred tax liabilities, total	240.1us-gaap_DeferredTaxLiabilities	230.9us-gaap_DeferredTaxLiabilities
Net deferred tax (liability) asset	$ (31.6)us-gaap_DeferredTaxAssetsLiabilitiesNet	$ (56.3)us-gaap_DeferredTaxAssetsLiabilitiesNet

Deferred Tax Assets, Tax Loss and Credit Carry Forwards

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Deferred tax liabilities depreciation.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from inventory.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences not separately disclosed.

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The tax effect as of the balance sheet date of the amount of the estimated future tax deductions arising from employee benefit costs not otherwise specified in the taxonomy, which can only be deducted for tax purposes when actual costs are incurred, and which can only be realized if sufficient tax-basis income is generated in future periods to enable the deduction to be taken.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from accrued liabilities.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount of deferred tax liability attributable to taxable temporary differences net of deferred tax asset attributable to deductible temporary differences and carryforwards after valuation allowances.

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Amount of deferred tax liability attributable to taxable temporary differences from intangible assets other than goodwill.

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Amount of deferred tax liability attributable to taxable temporary differences not separately disclosed.

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