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Subsequent Events Subsequent Event (Details) $ in Billions	6 Months Ended
	Jun. 30, 2017 USD ($) Restaurant	Jun. 30, 2016 Restaurant
Subsequent Event [Line Items]
Number of Restaurants | Restaurant	37,011	36,504
China and Hong Kong Held for Sale [Member]
Subsequent Event [Line Items]
Number of Restaurants | Restaurant	2,700
Businesses held for sale, ownership percentage to be retained	20.00%
Disposal Group, Not Discontinued Operation, Estimated Gain on Disposal | $	$ 1.0
Estimated Proceeds from sale of business | $	$ 1.6

X

- Definition

The percentage ownership that the Company will retain under the terms of the businesses held for sale agreement in China and Hong Kong

+ References

No definition available.

+ Details

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

X

- Definition

Disposal Group, Not Discontinued Operation, Estimated Gain on Disposal

+ References

No definition available.

+ Details

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Namespace Prefix:	mcd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The estimated cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

+ References

No definition available.

+ Details

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Namespace Prefix:	mcd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Represents the number of restaurants.

+ References

No definition available.

+ Details

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X

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
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X

- Details

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Namespace Prefix:
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