XML 15 R1.htm IDEA: XBRL DOCUMENT v3.3.1.900
Document and Entity Information - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2015
Jan. 29, 2016
Jun. 30, 2015
Document and Entity Information      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2015    
Document Fiscal Year Focus 2015    
Document Fiscal Period Focus FY    
Entity Registrant Name CHIPOTLE MEXICAN GRILL INC    
Entity Central Index Key 0001058090    
Current Fiscal Year End Date --12-31    
Entity Filer Category Large Accelerated Filer    
Entity Common Stock, Shares Outstanding   30,044,250  
Entity Public Float     $ 11.2
Entity Current Reporting Status Yes    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No