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Summary of Restricted Stock and Restricted Stock Unit Award Activity (Detail) - USD ($) $ in Millions | 9 Months Ended
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Sep. 30, 2022 | Sep. 30, 2021
Restricted Stock |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Number of restricted stock units that vested during the period | 900,000 |
Fair value of restricted stock units that vested during the period | $ 15.2 | $ 2.5
Compensation expense recognized during the period | 12.0 | 13.8
Income tax benefit (cost) related to restricted stock units | $ 2.5 | $ (0.1)
Restricted Stock Units (RSUs) |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Number of restricted stock units that vested during the period | 100,000 | 10,000.00
Fair value of restricted stock units that vested during the period | $ 1.7 | $ 0.3
Accumulated dividends paid upon vesting of restricted stock units | 0.3 | 0.1
Compensation expense recognized during the period | 4.2 | 2.8
Income tax benefit (cost) related to restricted stock units | 0.1 | (0.5)
Estimated remaining expense | 23.8 |
Cinemark Holdings Inc [Member] | Restricted Stock |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Fair value of restricted stock units that vested during the period | 0.6 | 1.3
Compensation expense recognized during the period | 0.7 | 0.7
Income tax benefit (cost) related to restricted stock units | 0.1 | 0.3
Cinemark Holdings Inc [Member] | Restricted Stock Units (RSUs) |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Estimated remaining expense | 0.8 |
Cinemark Partners Second [Member] | Restricted Stock |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Fair value of restricted stock units that vested during the period | 14.6 | 1.2
Compensation expense recognized during the period | 11.3 | 13.1
Income tax benefit (cost) related to restricted stock units | 2.4 | $ (0.4)
Cinemark Partners Second [Member] | Restricted Stock Units (RSUs) |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Estimated remaining expense | $ 23.0 |

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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