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Treasury Stock and Share Based Awards - Summary of Restricted Stock and Restricted Stock Unit Award Activity (Detail) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Restricted Stock    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of restricted stock units that vested during the period 560,000  
Fair value of restricted stock units that vested during the period $ 6.9 $ 5.6
Compensation expense recognized during the period 3.9 4.2
Income tax benefit (cost) related to restricted stock units 0.8 $ 0.8
Restricted Stock Units (RSUs)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Estimated remaining expense [1] $ 30.0  
Performance Shares [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of restricted stock units that vested during the period 100,000 100,000
Fair value of restricted stock units that vested during the period $ 1.2 $ 1.7
Accumulated dividends paid upon vesting of restricted stock units 0.2 0.3
Compensation expense recognized during the period 1.8 0.9
Income tax benefit (cost) related to restricted stock units   0.3
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
Compensation expense recognized during the period 0.3 0.2
Cinemark Holdings Inc [Member] | Restricted Stock Units (RSUs)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Estimated remaining expense 0.5  
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 6.9 5.6
Compensation expense recognized during the period 3.6 4.0
Income tax benefit (cost) related to restricted stock units 0.8 $ 0.8
Cinemark Partners Second [Member] | Restricted Stock Units (RSUs)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Estimated remaining expense [1] $ 29.5  
[1] The weighted average period over which this remaining compensation expense will be recognized by both Holdings and CUSA is approximately 2.2 years.