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v3.20.2

Updates to Significant Accounting Policies (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2020
Accounting Policies [Abstract] |  |
Deferred collection amount of rental income | $ 20 | $ 470
Franchise Agreement Period |  | 20 years

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- Definition Deferred collection amount of rental income + References No definition available. + Details
Name: | mcd_Deferredcollectionamountofrentalincome
Namespace Prefix: | mcd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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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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- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration