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Restaurant Information | 9 Months Ended
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Sep. 30, 2018
Disclosure Restaurant Information By Ownership Type [Abstract] |
Restaurant Information | Restaurant Information The following table presents restaurant information by ownership type:
Restaurants at September 30, | 2018 |  | 2017
Conventional franchised | 21,586 |  |  | 21,214 |
Developmental licensed | 7,103 |  |  | 6,824 |
Foreign affiliated | 6,056 |  |  | 5,708 |
Total Franchised | 34,745 |  |  | 33,746 |
Company-operated | 2,812 |  |  | 3,230 |
Systemwide restaurants | 37,557 |  |  | 36,976 |
The results of operations of restaurant businesses purchased and sold in transactions with franchisees were not material either individually or in the aggregate to the condensed consolidated financial statements for the periods prior to purchase and sale.

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- Definition Disclosure - Restaurant Information by Ownership Type [Abstract] + References No definition available. + Details
Name: | mcd_DisclosureRestaurantInformationByOwnershipTypeAbstract
Namespace Prefix: | mcd_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition This element may be used to capture disclosure pertaining to number of restaurants and ownership type. + References No definition available. + Details
Name: | mcd_RestaurantOwnershipTextBlock
Namespace Prefix: | mcd_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration