Schedule 1 Dividend Declared for Fiscal Period (Detail) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Dividend Declared [Line Items]
Amount per Share of Common Stock		$ 0.36	$ 1.36	$ 1.28
First Quarter Dividend
Dividend Declared [Line Items]
Declaration Date		Feb. 21, 2020	Feb. 23, 2019	Feb. 23, 2018
Record Date		Mar. 06, 2020	Mar. 08, 2019	Mar. 08, 2018
Payable Date		Mar. 20, 2020	Mar. 22, 2019	Mar. 22, 2018
Amount per Share of Common Stock		$ 0.36	$ 0.34	$ 0.32
Second Quarter Dividend
Dividend Declared [Line Items]
Declaration Date			May 24, 2019	May 25, 2018
Record Date			Jun. 10, 2019	Jun. 08, 2018
Payable Date			Jun. 24, 2019	Jun. 22, 2018
Amount per Share of Common Stock			$ 0.34	$ 0.32
Third Quarter Dividend
Dividend Declared [Line Items]
Declaration Date			Aug. 16, 2019	Aug. 23, 2018
Record Date			Sep. 04, 2019	Sep. 04, 2018
Payable Date			Sep. 18, 2019	Sep. 18, 2018
Amount per Share of Common Stock			$ 0.34	$ 0.32
Fourth Quarter Dividend
Dividend Declared [Line Items]
Declaration Date			Nov. 22, 2019	Nov. 15, 2018
Record Date			Dec. 04, 2019	Dec. 04, 2018
Payable Date			Dec. 18, 2019	Dec. 18, 2018
Amount per Share of Common Stock			$ 0.34	$ 0.32
Cinemark Holdings, Inc.
Dividend Declared [Line Items]
Amount per Share of Common Stock		$ 0.36	$ 1.36	$ 1.28
Total Dividends	[1]	$ 42,567	$ 159,951	$ 150,116
Cinemark Holdings, Inc. | First Quarter Dividend
Dividend Declared [Line Items]
Declaration Date		Feb. 21, 2020	Feb. 23, 2019	Feb. 23, 2018
Record Date		Mar. 06, 2020	Mar. 08, 2019	Mar. 08, 2018
Payable Date		Mar. 20, 2020	Mar. 22, 2019	Mar. 22, 2018
Amount per Share of Common Stock		$ 0.36	$ 0.34	$ 0.32
Total Dividends	[1]	$ 42,567	$ 39,905	$ 37,471
Cinemark Holdings, Inc. | Second Quarter Dividend
Dividend Declared [Line Items]
Declaration Date			May 24, 2019	May 25, 2018
Record Date			Jun. 10, 2019	Jun. 08, 2018
Payable Date			Jun. 24, 2019	Jun. 22, 2018
Amount per Share of Common Stock			$ 0.34	$ 0.32
Total Dividends	[1]		$ 40,012	$ 37,523
Cinemark Holdings, Inc. | Third Quarter Dividend
Dividend Declared [Line Items]
Declaration Date			Aug. 16, 2019	Aug. 23, 2018
Record Date			Sep. 04, 2019	Sep. 04, 2018
Payable Date			Sep. 18, 2019	Sep. 18, 2018
Amount per Share of Common Stock			$ 0.34	$ 0.32
Total Dividends	[1]		$ 40,020	$ 37,530
Cinemark Holdings, Inc. | Fourth Quarter Dividend
Dividend Declared [Line Items]
Declaration Date			Nov. 22, 2019	Nov. 15, 2018
Record Date			Dec. 04, 2019	Dec. 04, 2018
Payable Date			Dec. 18, 2019	Dec. 18, 2018
Amount per Share of Common Stock			$ 0.34	$ 0.32
Total Dividends	[1]		$ 40,014	$ 37,592

[1] Of the dividends recorded during 2018, 2019 and 2020, $624, $670 and $256, respectively, were related to outstanding restricted stock units and will not be paid until such units vest.