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Recently Issued Accounting Standards Franchise fee expected cumulative catch-up adjustment (Details)	Sep. 30, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Franchise fees expected cumulative catch-up adjustment	2.00%

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- Definition

Cumulative catch up adjustment to be recorded as deferred revenue upon adoption of the new revenue recognition standard. Under the new revenue recognition accounting guidance, initial franchise fees will be recognized over the franchise term and not "earned" per the contract terms, which is currently when a new store opens or at the start of a new franchise term.

+ References

No definition available.

+ Details

Name:	mcd_Franchisefeesexpectedcumulativecatchupadjustment
Namespace Prefix:	mcd_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

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- 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

Name:	us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration