XML 57 R44.htm IDEA: XBRL DOCUMENT
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Restaurant Closure Costs and Impairment of Long-Lived Assets (Narrative) (Details) - item | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2018 | Dec. 31, 2018
Minimum [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Number of restaurants expected to be closed | 55 |
Maximum [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Number of restaurants expected to be closed | 65 |
Chipotle [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Number of restaurants expected to be closed |  | 48
Number of restaurants closed |  | 45
Pizzeria Locale [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Number of restaurants expected to be closed |  | 5
Number of restaurants closed |  | 5
TastyMade [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Number of restaurants closed |  | 1

X
- Definition Number Of Restaurants Closed + References No definition available. + Details
Name: | cmg_NumberOfRestaurantsClosed
Namespace Prefix: | cmg_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Restaurants Expected to be Closed + References No definition available. + Details
Name: | cmg_NumberOfRestaurantsExpectedToBeClosed
Namespace Prefix: | cmg_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_RestructuringCostAndReserveLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=cmg_ChipotleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=cmg_PizzeriaLocaleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=cmg_TastymadeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |