Computations of Basic and Diluted Loss Per Share (Detail) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Earnings Per Share Disclosure [Line Items]
Net loss attributable to Cinemark Holdings, Inc.		$ (3.1)	$ (74.0)
Loss allocated to participating share-based awards (1)	[1]		1.2
Net loss attributable to common stockholders		$ (3.1)	$ (72.8)
Basic weighted average common stock outstanding		118,800,000	117,900,000
Diluted common equivalent shares		118,800,000	117,900,000
Basic loss per share attributable to common stockholders		$ (0.03)	$ (0.62)
Diluted loss per share attributable to common stockholders		$ (0.03)	$ (0.62)
Restricted Stock Units (RSUs)
Earnings Per Share Disclosure [Line Items]
Common equivalent shares for restricted stock units		0	100,000

[1] For the three months ended March 31, 2023 and 2022, a weighted average of approximately 1.8 shares and 1.9 shares of restricted stock, respectively, were considered participating securities.