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v3.19.3.a.u2

Long Term Debt - Amendment of Credit Agreement (Parenthetical) (Detail) | Mar. 29, 2018 | Nov. 28, 2017 | Jun. 16, 2017
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Debt Disclosure [Abstract] |  |  |
Debt instrument, reduction in interest rate | 0.25% |  | 0.25%
Debt instrument, extended maturity date | 2025-03 | 2022-12 |

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- Definition Extended maturity date. + References No definition available. + Details
Name: | cnk_ExtendedMaturityDate
Namespace Prefix: | cnk_
Data Type: | xbrli:gYearMonthItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_DebtDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Incremental percentage increase (decrease) in the stated rate on a debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentInterestRateIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration