Summary of Impact of Translating Financial Statements of Company's International Subsidiaries (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Dec. 31, 2019
Foreign Currency Translation [Line Items]
Other comprehensive Income (Loss)	$ (1,503)	$ (25,408)	$ (62,830)	$ (19,728)
International Subsidiaries | Cinemark Holdings, Inc. Stockholders' Equity
Foreign Currency Translation [Line Items]
Other comprehensive Income (Loss)			$ (62,830)	(19,728)
Brazil
Foreign Currency Translation [Line Items]
Exchange Rate	5.63		5.63		4.02
Other comprehensive Income (Loss)			$ (51,453)	(14,492)
Chile
Foreign Currency Translation [Line Items]
Exchange Rate	785.93		785.93		736.86
Other comprehensive Income (Loss)			$ (5,046)	(4,017)
Colombia
Foreign Currency Translation [Line Items]
Exchange Rate	3,878.95		3,878.95		3,277.14
Other comprehensive Income (Loss)			$ (2,584)	(1,507)
Peru
Foreign Currency Translation [Line Items]
Exchange Rate	3.62		3.62		3.37
Other comprehensive Income (Loss)			$ (3,187)	(203)
Other foreign countries
Foreign Currency Translation [Line Items]
Other comprehensive Income (Loss)			$ (560)	$ 491