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Document and Entity Information - shares
 6 Months Ended
Jun. 30, 2019
Jul. 19, 2019
Document and Entity Information    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jun. 30, 2019  
Document Quarterly Report true  
Document Transition Report false  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q2  
Entity Registrant Name CHIPOTLE MEXICAN GRILL INC  
Entity Central Index Key 0001058090  
Current Fiscal Year End Date --12-31  
Entity Address, Address Line One 610 Newport Center Drive  
Entity Address, Address Line Two Suite 1300  
Entity Address, City or Town Newport Beach  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 92660  
Entity Tax Identification Number 84-1219301  
Entity Incorporation, State or Country Code DE  
City Area Code 303  
Local Phone Number 595-4000  
Trading Symbol CMG  
Entity Filer Category Large Accelerated Filer  
Entity File Number 1-32731  
Title of 12(b) Security Common stock, par value $0.01 per share  
Security Exchange Name NYSE  
Entity Common Stock, Shares Outstanding   27,722,812
Entity Current Reporting Status Yes  
Entity Shell Company false  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Interactive Data Current Yes