XML 31 R49.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Restaurant Closure Costs (Schedule of Impairment Charges) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Restaurant Closure Costs [Abstract] |  |  |
Restaurant asset impairment and other restaurant closure costs | $ 2,997 | $ 40,522 | $ 3,284

X
- Definition Asset Impairment Charges Disclosure [Abstract] + References No definition available. + Details
Name: | cmg_AssetImpairmentChargesDisclosureAbstract
Namespace Prefix: | cmg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Termination of Lease, Charges and Related Costs + References No definition available. + Details
Name: | cmg_TerminationOfLeaseChargesAndRelatedCosts
Namespace Prefix: | cmg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration