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

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

X

- 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