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Revenue Recognition (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Unredeemed Gift Card Sales Percentage	4.00%		4.00%
Gift card breakage revenue recognition period			8 months
Earned points expiration period for inactivity			6 months
Gift Card [Member]
Liability included in unearned revenue	$ 53,217,000		$ 53,217,000		$ 70,474,000
Revenue recognized from deferred liability	6,615,000	$ 6,289,000	31,318,000	$ 30,529,000
Chipotle Rewards [Member]
Liability included in unearned revenue	8,577,000		8,577,000		$ 0
Revenue recognized from deferred liability	$ 8,873,000	$ 0	$ 11,150,000	$ 0
Minimum [Member]
Earned rewards, expiration period			1 month
Maximum [Member]
Earned rewards, expiration period			2 months

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The Company's estimated breakage rate of gift card sales.

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118944033&loc=SL49130531-203044

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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=118944033&loc=SL49130532-203044

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
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-Section 50
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Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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