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Lease Accounting - Additional Information (Detail) $ in Thousands | Sep. 30, 2020 USD ($) Agreement
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Theatres |
Lease [Line Items] |
Payments withheld or deferred classified as acounts payable and accrued expenses | $ 62,559
Noncancelable lease payments payable under operating lease, lease not yet commenced | $ 220,417
Equipment |
Lease [Line Items] |
Number of noncancelable lease agreements signed, but not yet commenced | Agreement | 0

X
- Definition Lease. + References No definition available. + Details
Name: | cnk_LeaseLineItems
Namespace Prefix: | cnk_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Lease payments withheld or deferred classified as accounts payable and accrued expenses. + References No definition available. + Details
Name: | cnk_LeasePaymentsWithheldOrDeferredClassifiedAsAccountsPayableAndAccruedExpenses
Namespace Prefix: | cnk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Noncancelable lease payments payable under lessee operating lease lease not yet commenced. + References No definition available. + Details
Name: | cnk_NoncancelableLeasePaymentsPayableUnderLesseeOperatingLeaseLeaseNotYetCommenced
Namespace Prefix: | cnk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Number of noncancelable lease agreements, lease not yet commenced. + References No definition available. + Details
Name: | cnk_NumberOfNoncancelableLeaseAgreementsLeaseNotYetCommenced
Namespace Prefix: | cnk_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=cnk_TheatresMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_EquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |