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Earnings Per Share (Stock Awards Excluded from the Calculation of Diluted EPS) (Details) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Earnings Per Share [Abstract]
Stock awards subject to performance conditions	48	55
Stock awards that were antidilutive	153	142
Total stock awards excluded from diluted earnings per share	201	197

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- Definition

Securities Excluded From Computation of Earnings Per Share Amount, Due to Performance Conditions

+ References

No definition available.

+ Details

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Namespace Prefix:	cmg_
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Balance Type:	na
Period Type:	duration

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- Definition

Stock awards that were excluded from diluted earnings per share. For example, stock awards subject to performance conditions and stock awards that were antidilutive.

+ References

No definition available.

+ Details

Name:	cmg_SharesExcludedFromDilutedEarningsPerShare
Namespace Prefix:	cmg_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257

+ Details

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Period Type:	duration

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- References

No definition available.

+ Details

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