Basis of Presentation and Update to Accounting Policy (Narrative) (Details)	9 Months Ended
	Sep. 30, 2020 item region segment
Product Information [Line Items]
Number of regions | region	8
Number of reportable segments | segment	1
Pizzeria Locale [Member]
Product Information [Line Items]
Number of restaurants	4
United States [Member] | Chipotle [Member]
Product Information [Line Items]
Number of restaurants	2,666
International [Member] | Chipotle [Member]
Product Information [Line Items]
Number of restaurants	40