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Franchise Arrangements - Additional Information (Detail) | 9 Months Ended
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Sep. 30, 2020
Franchisor Disclosure [Abstract] |
Franchise Agreement Period | 20 years

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- Definition Franchise Agreement Period + References No definition available. + Details
Name: | mcd_FranchiseAgreementPeriod
Namespace Prefix: | mcd_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Franchisor Disclosure [Abstract] + References No definition available. + Details
Name: | mcd_FranchisorDisclosureAbstract
Namespace Prefix: | mcd_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration