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Description Of Business And Summary Of Significant Accounting Policies (Narrative) (Details)
 12 Months Ended
Dec. 31, 2020
USD ($)
item
region
segment
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Jan. 01, 2020
USD ($)
Description Of Business And Summary Of Significant Accounting Policies [Line Items]        
Number of regions | region 8      
Number of reportable segments | segment 1      
Allowance for doubtful accounts $ 1,588,000 $ 7,000    
Acquisition, development and construction of restaurant capitalized costs $ 9,268,000 6,735,000 $ 6,285,000  
Option to extend, additional periods 5 years      
Renewal period 20 years      
Long-term debt $ 0      
Goodwill impairment charges $ 0      
Earned points expiration period for inactivity 6 months      
Advertising and marketing costs $ 158,570,000 141,567,000 $ 111,695,000  
Compensation expense related to employees eligible to retire and retain full rights to the awards, recognition period 12 months      
Decrease to deferred income tax liability $ 149,422,000 37,814,000    
Decrease to retained earnings $ 3,276,163,000 $ 2,921,448,000    
Minimum [Member]        
Description Of Business And Summary Of Significant Accounting Policies [Line Items]        
Remaining lease term 1 year      
Tax benefit percentage for realization with a taxing authority 50.00%      
Earned rewards expiration period 1 month      
Maximum [Member]        
Description Of Business And Summary Of Significant Accounting Policies [Line Items]        
Remaining lease term 20 years      
Earned rewards expiration period 2 months      
Chipotle [Member] | United States [Member]        
Description Of Business And Summary Of Significant Accounting Policies [Line Items]        
Number of restaurants | item 2,724      
Chipotle [Member] | International [Member]        
Description Of Business And Summary Of Significant Accounting Policies [Line Items]        
Number of restaurants | item 40      
Pizzeria Locale [Member]        
Description Of Business And Summary Of Significant Accounting Policies [Line Items]        
Number of restaurants | item 4      
SOSARS [Member]        
Description Of Business And Summary Of Significant Accounting Policies [Line Items]        
Expiration period of SOSARs 7 years      
Performance Shares [Member]        
Description Of Business And Summary Of Significant Accounting Policies [Line Items]        
Vesting period 3 years      
Vesting Period 1 [Member] | SOSARS [Member]        
Description Of Business And Summary Of Significant Accounting Policies [Line Items]        
Vesting period 2 years      
Vesting Period 2 [Member] | SOSARS [Member]        
Description Of Business And Summary Of Significant Accounting Policies [Line Items]        
Vesting period 3 years      
Revision of Prior Period, Accounting Standards Update, Adjustment [Member] | Accounting Standards Update 2016-13 [Member]        
Description Of Business And Summary Of Significant Accounting Policies [Line Items]        
Increase to allowance for credit losses       $ 1,414,000
Decrease to deferred income tax liability       363,000
Decrease to retained earnings       $ 1,051,000