XML 15 R39.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Leases (Narrative) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 item
Operating Leased Assets [Line Items] |
Option terms of lease | 5 years
Minimum sublease rentals | $ 6,099
Number of sale leaseback transactions | 6
Total deemed landlord financing | $ 3,529
Shopping Center Or Building Leases [Member] | Maximum [Member] |
Operating Leased Assets [Line Items] |
Combined initial and option terms lease | 25 years
Shopping Center Or Building Leases [Member] | Minimum [Member] |
Operating Leased Assets [Line Items] |
Combined initial and option terms lease | 20 years
Ground Leases [Member] | Maximum [Member] |
Operating Leased Assets [Line Items] |
Combined initial and option terms lease | 40 years
Ground Leases [Member] | Minimum [Member] |
Operating Leased Assets [Line Items] |
Combined initial and option terms lease | 30 years

X
- Definition Number of sale leaseback transactions + References No definition available. + Details
Name: | cmg_NumberOfSaleLeasebackTransactions
Namespace Prefix: | cmg_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Option terms of lease + References No definition available. + Details
Name: | cmg_OptionTermsOfLease
Namespace Prefix: | cmg_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Combined initial and option terms of lease + References No definition available. + Details
Name: | cmg_TermOfLease
Namespace Prefix: | cmg_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_OperatingLeasedAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Contractually required future rental payments receivable on noncancelable subleasing arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 16 -Subparagraph b(ii) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Present value of minimum lease payments for sale-leaseback transactions accounted for using the deposit method or as a financing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 16 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_PresentValueOfFutureMinimumLeasePaymentsSaleLeasebackTransactions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant