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Capital Stock, Earnings Per Share And Stock Issuance Capital Stock, Earnings Per Share And Stock Issuance (Details) | 12 Months Ended
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Nov. 30, 2020
Class of Stock [Line Items] |
Maximum percentage of votes a holder of shares of Common Stock may cast out of the votes entitled to be cast by all holders of shares of Common Stock | 10.00%
Minimum [Member] |
Class of Stock [Line Items] |
Minimum percentage a holder must acquire of each class of common stock not to be subject to our redemption rights | 90.00%
Minimum percentage of votes a holder must control out of the votes entitled to be cast by all holders of shares of Common Stock to trigger the automatic conversion, on a share-for-share basis, of all shares of Common Stock Non-Voting into shares of Common Stock | 50.00%

X
- Definition Maximum percentage of votes a holder of shares of Common Stock may cast out of the votes entitled to be cast by all holders of shares of Common Stock + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

X
- Definition Minimum percentage a holder must acquire of each class of common stock not to be subject to our redemption rights + References No definition available. + Details
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Namespace Prefix: | mkc_
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Balance Type: | na
Period Type: | duration

X
- Definition Minimum percentage of votes a holder must control out of the votes entitled to be cast by all holders of shares of Common Stock to trigger the automatic conversion, on a share-for-share basis, of all shares of Common Stock Non-Voting into shares of Common Stock + References No definition available. + Details
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Namespace Prefix: | mkc_
Data Type: | num:percentItemType
Balance Type: | na
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
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |