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Restaurant Information by Ownership Type (Detail)
Mar. 31, 2015
Restaurant
Mar. 31, 2014
Restaurant
Segment Reporting Information [Line Items]    
Number of Restaurants 36,290us-gaap_NumberOfRestaurants 35,493us-gaap_NumberOfRestaurants
Franchised    
Segment Reporting Information [Line Items]    
Number of Restaurants 29,556us-gaap_NumberOfRestaurants
/ mcd_RestaurantOwnershipTypeAxis
= us-gaap_FranchisedUnitsMember		 28,774us-gaap_NumberOfRestaurants
/ mcd_RestaurantOwnershipTypeAxis
= us-gaap_FranchisedUnitsMember
Franchised | Conventional franchised    
Segment Reporting Information [Line Items]    
Number of Restaurants 20,787us-gaap_NumberOfRestaurants
/ mcd_RestaurantOwnershipTypeAxis
= us-gaap_FranchisedUnitsMember
/ mcd_SegmentReportingInformationBySecondarySegmentAxis
= mcd_ConventionalFranchisesMember		 20,369us-gaap_NumberOfRestaurants
/ mcd_RestaurantOwnershipTypeAxis
= us-gaap_FranchisedUnitsMember
/ mcd_SegmentReportingInformationBySecondarySegmentAxis
= mcd_ConventionalFranchisesMember
Franchised | Developmental licensed    
Segment Reporting Information [Line Items]    
Number of Restaurants 5,261us-gaap_NumberOfRestaurants
/ mcd_RestaurantOwnershipTypeAxis
= us-gaap_FranchisedUnitsMember
/ mcd_SegmentReportingInformationBySecondarySegmentAxis
= mcd_DevelopmentalLicenseesMember		 4,833us-gaap_NumberOfRestaurants
/ mcd_RestaurantOwnershipTypeAxis
= us-gaap_FranchisedUnitsMember
/ mcd_SegmentReportingInformationBySecondarySegmentAxis
= mcd_DevelopmentalLicenseesMember
Franchised | Affiliated    
Segment Reporting Information [Line Items]    
Number of Restaurants 3,508us-gaap_NumberOfRestaurants
/ mcd_RestaurantOwnershipTypeAxis
= us-gaap_FranchisedUnitsMember
/ mcd_SegmentReportingInformationBySecondarySegmentAxis
= us-gaap_AffiliatedEntityMember		 3,572us-gaap_NumberOfRestaurants
/ mcd_RestaurantOwnershipTypeAxis
= us-gaap_FranchisedUnitsMember
/ mcd_SegmentReportingInformationBySecondarySegmentAxis
= us-gaap_AffiliatedEntityMember
Company-operated    
Segment Reporting Information [Line Items]    
Number of Restaurants 6,734us-gaap_NumberOfRestaurants
/ mcd_RestaurantOwnershipTypeAxis
= us-gaap_EntityOperatedUnitsMember		 6,719us-gaap_NumberOfRestaurants
/ mcd_RestaurantOwnershipTypeAxis
= us-gaap_EntityOperatedUnitsMember