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Share-based Compensation Expense and Effect on Diluted Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]
Share-based compensation expense	$ 172.0	$ 175.0	$ 167.0
After tax	$ 136.0	$ 155.0	$ 146.0
Earnings per common share-diluted (in dollars per share)	$ 0.19	$ 0.21	$ 0.20

X

- Definition

The effect of share-based compensation expense on net income per common share-diluted

+ References

No definition available.

+ Details

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Namespace Prefix:	mcd_
Data Type:	dtr-types1:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount, after tax, of expense for award under share-based payment arrangement.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

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

X

- Definition

Amount of noncash expense for share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (a)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration