CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Millions	CNK	CNK Common Stock	CNK Treasury Stock	CNK Additional Paid-In-Capital	CNK Accumulated Deficit	CNK Accumulated Other Comprehensive Loss	CNK Total Cinemark Holdings, Inc.'s Stockholders' Equity	CNK Noncontrolling Interests	CUSA	CUSA Common Stock Class B Common Stock Member	CUSA Treasury Stock	CUSA Additional Paid-In-Capital	CUSA Accumulated Deficit	CUSA Accumulated Other Comprehensive Loss	CUSA Total Cinemark Holdings, Inc.'s Stockholders' Equity	CUSA Noncontrolling Interests
Balance, beginning of period at Dec. 31, 2023	$ 318.8	$ 0.1	$ (98.3)	$ 1,244.3	$ (472.4)	$ (363.9)	$ 309.8	$ 9.0	$ 600.3	$ 49.5	$ (24.2)	$ 1,503.3	$ (570.6)	$ (366.7)	$ 591.3	$ 9.0
Balance (in shares) beginning of period at Dec. 31, 2023		127,600,000								200,000
Treasury Stock Balance (in shares) beginning of period at Dec. 31, 2023			(6,000,000)
Restricted stock forfeitures and stock withholdings related to share based awards that vested during the year (in shares)			(300,000)
Restricted stock forfeitures and stock withholdings related to share based awards that vested	(4.2)		$ (4.2)				(4.2)
Issuance of stock share upon vesting of performance stock units		100,000
Issuance of share based awards and share based awards compensation expense	6.4			6.4			6.4
Issuance of share based awards and share based awards compensation expense, (in shares)		900,000
Dividends paid to stockholders, $0.08 per common share (see Note 6)	0.0
Share based awards compensation expense									6.0			6.0			6.0
Net (loss) income	25.3				24.8		24.8	0.5	27.9				27.4		27.4	0.5
Distributions to noncontrolling interests	(0.5)							(0.5)	(0.5)							(0.5)
Amortization of accumulated gains for amended swap agreements	(3.1)					(3.1)	(3.1)		(3.1)					(3.1)	(3.1)
Other comprehensive income (loss)	(7.3)					(7.3)	(7.3)		(7.3)					(7.3)	(7.3)
Balance, end of period at Mar. 31, 2024	335.4	$ 0.1	$ (102.5)	1,250.7	(447.6)	(374.3)	326.4	9.0	623.3	$ 49.5	(24.2)	1,509.3	(543.2)	(377.1)	614.3	9.0
Balance (in shares) ending of period at Mar. 31, 2024		128,600,000								200,000
Treasury Stock Balance (in shares) ending of period at Mar. 31, 2024			(6,300,000)
Balance, beginning of period at Dec. 31, 2024	603.4	$ 0.1	$ (103.2)	1,276.9	(162.7)	(416.7)	594.4	9.0	899.7	$ 49.5	(24.2)	1,534.6	(249.7)	(419.5)	890.7	9.0
Balance (in shares) beginning of period at Dec. 31, 2024		128,700,000								200,000
Treasury Stock Balance (in shares) beginning of period at Dec. 31, 2024			(6,400,000)
Repurchases of common stock under share repurchase program (in shares) (see Note 10)			(7,900,000)
Repurchases of common stock under share repurchase program (see Note 10)	(201.6)		$ (201.6)				(201.6)
Restricted stock forfeitures and stock withholdings related to share based awards that vested during the year (in shares)			(600,000)
Restricted stock forfeitures and stock withholdings related to share based awards that vested	(17.1)		$ (17.1)				(17.1)
Issuance of stock share upon vesting of performance stock units		800,000
Issuance of share based awards and share based awards compensation expense	8.8			8.8			8.8
Issuance of share based awards and share based awards compensation expense, (in shares)		500,000
Dividends paid to stockholders, $0.08 per common share (see Note 6)	(9.9)
Dividends paid to stockholders, $0.08 per common share (see Note 6)	(10.1)				(10.1)		(10.1)
Share based awards compensation expense									8.5			8.5			8.5
Net (loss) income	(38.6)				(38.9)		(38.9)	0.3	(34.3)				(34.6)		(34.6)	0.3
Distributions to noncontrolling interests	(0.9)							(0.9)	(0.9)							(0.9)
Amortization of accumulated gains for amended swap agreements	0.9					0.9	0.9		0.9					0.9	0.9
Other comprehensive income (loss)	12.8					12.8	12.8		12.8					12.8	12.8
Balance, end of period at Mar. 31, 2025	$ 357.6	$ 0.1	$ (321.9)	$ 1,285.7	$ (211.7)	$ (403.0)	$ 349.2	$ 8.4	$ 886.7	$ 49.5	$ (24.2)	$ 1,543.1	$ (284.3)	$ (405.8)	$ 878.3	$ 8.4
Balance (in shares) ending of period at Mar. 31, 2025		130,000,000								200,000
Treasury Stock Balance (in shares) ending of period at Mar. 31, 2025			(14,900,000)