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Schedule 1 Dividend Declared for Fiscal Period (Detail) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($) $ / shares
Dividend Declared [Line Items]
Amount per Share of Common Stock	$ 0.36
First Quarter Dividend
Dividend Declared [Line Items]
Declaration Date	Feb. 21, 2020
Record Date	Mar. 06, 2020
Payable Date	Mar. 20, 2020
Amount per Share of Common Stock	$ 0.36
Cinemark Holdings, Inc.
Dividend Declared [Line Items]
Amount per Share of Common Stock	$ 0.36
Total Dividends | $	$ 42.6	[1]
Cinemark Holdings, Inc. | First Quarter Dividend
Dividend Declared [Line Items]
Declaration Date	Feb. 21, 2020
Record Date	Mar. 06, 2020
Payable Date	Mar. 20, 2020
Amount per Share of Common Stock	$ 0.36
Total Dividends | $	$ 42.6	[1]
[1] Of the dividends recorded during 2020, $0.3 were related to outstanding restricted stock units and are not paid until such units vest.

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