Goodwill And Intangible Assets (Schedule Of Amortized And Non-Amortized Intangible Assets) (Details) (USD $) In Millions, unless otherwise specified	Nov. 30, 2014	Nov. 30, 2013	Nov. 30, 2012
Finite Lived and Indefinite Lived Intangible Assets [Line Items]
Finite-lived intangible assets, Gross carrying amount	$ 94.7	$ 93.9
Finite-lived intangible assets, Accumulated amortization	34.7	30.2
Goodwill	1,722.2us-gaap_Goodwill	1,798.5us-gaap_Goodwill	1,695.3us-gaap_Goodwill
Indefinite-lived intangible assets, total	1,993.0mkc_NonAmortizableIntangibleAssetsTotal	2,068.2mkc_NonAmortizableIntangibleAssetsTotal
Total goodwill and intangible assets, Gross carrying amount	2,087.7	2,162.1
Total goodwill and intangible assets, Accumulated amortization	34.7	30.2
Goodwill [Member]
Finite Lived and Indefinite Lived Intangible Assets [Line Items]
Goodwill	1,722.2	1,798.5
Brand Names [Member]
Finite Lived and Indefinite Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	$ 270.8	$ 269.7

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Goodwill and intangible assets gross carrying amount total.

+ References

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- Definition

Non-amortizable intangible assets total.

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- Definition

Goodwill and intangible assets gross accumulated amortization

+ References

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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- 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

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-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

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- Definition

Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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