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Summary of Significant Accounting Policies Advertising Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Company Operated Restaurant Advertising Expense	$ 355.0	$ 347.0	$ 335.0
Other Marketing Related Expenses	$ 90.0	$ 42.0	$ 64.0

X

- Definition

Advertising costs of Company-operated restaurants included in operating expenses

+ References

No definition available.

+ Details

Name:	mcd_CompanyOperatedRestaurantAdvertisingExpense
Namespace Prefix:	mcd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Production costs for radio and television advertising as well as other marketing-related expenses included in selling, general and administrative expenses.

+ References

No definition available.

+ Details

Name:	mcd_OtherMarketingRelatedExpenses
Namespace Prefix:	mcd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

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