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Updates to Significant Accounting Policies (Details) $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($)
Accounting Policies [Abstract]
Deferred collection amount of rental income	$ 300
Franchise Agreement Period	20 years

X

- 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

X

- 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