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Goodwill and Other Intangible Assets - Additional Information (Detail) | 6 Months Ended
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Jun. 30, 2020 Unit Community Country
U.S. Operating Segment |
Goodwill [Line Items] |
Number of reporting unit | Community | 20
Multiplication Value to Cash flows for the determination of fair value of Reporting units | Unit | 8
International Operating Segment |
Goodwill [Line Items] |
Number of reporting unit | Country | 7

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- Definition Multiplication value to Cash flows for the determination of fair value of reporting units. + References No definition available. + Details
Name: | cnk_MultiplicationValueToCashFlowsForDeterminationOfFairValueOfReportingUnits
Namespace Prefix: | cnk_
Data Type: | xbrli:decimalItemType
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_GoodwillLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment. + References No definition available. + Details
Name: | us-gaap_NumberOfReportingUnits
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=cnk_UsOperatingSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=cnk_InternationalOperatingSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |