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Revenue Recognition (Narrative) (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Chipotle Rewards [Member]
Unearned revenue	$ 0	$ 0

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- Definition

Contract With Customer Liability, Unearned Revenue

+ References

No definition available.

+ Details

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Namespace Prefix:	cmg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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- Details

Name:	srt_ProductOrServiceAxis=cmg_ChipotleRewardsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: