Summary of Restricted Stock and Restricted Stock Unit Award Activity (Detail) - USD ($) $ in Millions	9 Months Ended
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

Estimated remaining expense

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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
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Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.

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-Publisher FASB
-Name Accounting Standards Codification
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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