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Document And Entity Information
 12 Months Ended
Dec. 31, 2017
shares
Entity Registrant Name Arcos Dorados Holdings Inc.
Entity Central Index Key 0001508478
Current Fiscal Year End Date --12-31
Entity Filer Category Accelerated Filer
Document Type 20-F
Document Period End Date Dec. 31, 2017
Document Fiscal Year Focus 2017
Document Fiscal Period Focus FY
Amendment Flag false
Entity Well-known Seasoned Issuer Yes
Entity Current Reporting Status Yes
Class A Shares Of Common Stock [Member]  
Entity Common Stock, Shares Outstanding 131,072,508
Class B Shares Of Common Stock [Member]  
Entity Common Stock, Shares Outstanding 80,000,000