Quarterly report pursuant to Section 13 or 15(d)

Computations of Basic and Diluted Loss Per Share (Detail)

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Computations of Basic and Diluted Loss Per Share (Detail) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Earnings Per Share Disclosure [Line Items]        
Net loss attributable to Cinemark Holdings, Inc. $ (73.4) $ (142.4) $ (147.4) $ (350.7)
Loss allocated to participating share-based awards (1) [1] 1.4 2.7 2.5 5.9
Net loss attributable to common stockholders $ (72.0) $ (139.7) $ (144.9) $ (344.8)
Basic weighted average common stock outstanding 118,200,000 117,200,000 118,000,000.0 117,200,000
Diluted common equivalent shares 118,200,000 117,200,000 118,000,000.0 117,200,000
Basic loss per share attributable to common stockholders $ (0.61) $ (1.19) $ (1.23) $ (2.94)
Diluted loss per share attributable to common stockholders $ (0.61) $ (1.19) $ (1.23) $ (2.94)
Restricted Stock Units (RSUs)        
Earnings Per Share Disclosure [Line Items]        
Common equivalent shares for restricted stock units 250,000 160,000 280,000 100,000
[1] For the three months ended June 30, 2022 and 2021, a weighted average of approximately 2.27 shares and 2.28 shares of restricted stock, respectively, were considered participating securities. For the six months ended June 30, 2022 and 2021, a weighted average of approximately 2.03 shares and 1.99 shares of restricted stock, respectively, were considered participating securities.