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 Class B Common Stock Member	CUSA Common Stock Class A 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, 2022	$ 119.5	$ 0.1	$ (95.4)	$ 1,219.3	$ (660.6)	$ (353.2)	$ 110.2	$ 9.3	$ 381.9	$ 49.5	$ 0.0	$ (24.2)	$ 1,479.5	$ (775.9)	$ (356.3)	$ 372.6	$ 9.3
Balance (in shares) beginning of period at Dec. 31, 2022		126,100,000								200,000	0
Restricted stock forfeitures and stock withholdings related to share based awards that vested	(2.1)		(2.1)				(2.1)
Issuance of stock share upon vesting of performance stock units		100,000
Issuance of share based awards and share based awards compensation expense	5.7			5.7			5.7
Issuance of share based awards and share based awards compensation expense, (in shares)		1,300,000
Share based awards compensation expense									5.4				5.4			5.4
Net income	(2.5)				(3.1)		(3.1)	0.6	6.3					5.7		5.7	0.6
Amortization of accumulated gains for amended swap agreements	(1.5)					(1.5)	(1.5)		(1.5)						(1.5)	(1.5)
Other comprehensive loss	4.7					4.7	4.7		4.7						4.7	4.7
Balance, end of period at Mar. 31, 2023	123.8	$ 0.1	(97.5)	1,225.0	(663.7)	(350.0)	113.9	9.9	396.8	$ 49.5	$ 0.0	(24.2)	1,484.9	(770.2)	(353.1)	386.9	9.9
Balance (in shares) ending of period at Mar. 31, 2023		127,500,000								200,000	0
Balance, beginning of period at Dec. 31, 2022	119.5	$ 0.1	(95.4)	1,219.3	(660.6)	(353.2)	110.2	9.3	381.9	$ 49.5	$ 0.0	(24.2)	1,479.5	(775.9)	(356.3)	372.6	9.3
Balance (in shares) beginning of period at Dec. 31, 2022		126,100,000								200,000	0
Net income	117.9								127.8
Other comprehensive loss	11.4								11.4
Balance, end of period at Jun. 30, 2023	254.8	$ 0.1	(97.8)	1,231.8	(544.6)	(344.8)	244.7	10.1	528.9	$ 49.5		(24.2)	1,491.4	(650.0)	(347.9)	518.8	10.1
Balance (in shares) ending of period at Jun. 30, 2023		127,600,000								200,000
Balance, beginning of period at Mar. 31, 2023	123.8	$ 0.1	(97.5)	1,225.0	(663.7)	(350.0)	113.9	9.9	396.8	$ 49.5	$ 0.0	(24.2)	1,484.9	(770.2)	(353.1)	386.9	9.9
Balance (in shares) beginning of period at Mar. 31, 2023		127,500,000								200,000	0
Restricted stock forfeitures and stock withholdings related to share based awards that vested	(0.3)		(0.3)				(0.3)
Issuance of share based awards and share based awards compensation expense	6.8			6.8			6.8
Issuance of share based awards and share based awards compensation expense, (in shares)		100,000
Share based awards compensation expense									6.5				6.5			6.5
Net income	120.4				119.1		119.1	1.3	121.5					120.2		120.2	1.3
Distributions to noncontrolling interests	(1.1)							(1.1)	(1.1)								(1.1)
Amortization of accumulated gains for amended swap agreements	(1.5)					(1.5)	(1.5)		(1.5)						(1.5)	(1.5)
Other comprehensive loss	6.7					6.7	6.7		6.7						6.7	6.7
Balance, end of period at Jun. 30, 2023	254.8	$ 0.1	(97.8)	1,231.8	(544.6)	(344.8)	244.7	10.1	528.9	$ 49.5		(24.2)	1,491.4	(650.0)	(347.9)	518.8	10.1
Balance (in shares) ending of period at Jun. 30, 2023		127,600,000								200,000
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	$ 0.0	(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	0
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
Share based awards compensation expense									6.0				6.0			6.0
Net 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 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	$ 0.0	(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	0
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	$ 0.0	(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	0
Net income	71.9								78.8
Other comprehensive loss	(19.1)								(19.1)
Balance, end of period at Jun. 30, 2024	375.0	$ 0.1	(102.7)	1,260.0	(401.8)	(389.8)	365.8	9.2	667.1	$ 49.5		(24.2)	1,518.3	(493.1)	(392.6)	657.9	9.2
Balance (in shares) ending of period at Jun. 30, 2024		128,700,000								200,000
Balance, beginning 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	$ 0.0	(24.2)	1,509.3	(543.2)	(377.1)	614.3	9.0
Balance (in shares) beginning of period at Mar. 31, 2024		128,600,000								200,000	0
Restricted stock forfeitures and stock withholdings related to share based awards that vested	(0.2)		(0.2)				(0.2)
Issuance of share based awards and share based awards compensation expense	9.3			9.3			9.3
Issuance of share based awards and share based awards compensation expense, (in shares)		100,000
Share based awards compensation expense									9.0				9.0			9.0
Net income	46.6				45.8		45.8	0.8	50.9					50.1		50.1	0.8
Distributions to noncontrolling interests	(0.6)							(0.6)	(0.6)								(0.6)
Amortization of accumulated gains for amended swap agreements	(3.7)					(3.7)	(3.7)		(3.7)						(3.7)	(3.7)
Other comprehensive loss	(11.8)					(11.8)	(11.8)		(11.8)						(11.8)	(11.8)
Balance, end of period at Jun. 30, 2024	$ 375.0	$ 0.1	$ (102.7)	$ 1,260.0	$ (401.8)	$ (389.8)	$ 365.8	$ 9.2	$ 667.1	$ 49.5		$ (24.2)	$ 1,518.3	$ (493.1)	$ (392.6)	$ 657.9	$ 9.2
Balance (in shares) ending of period at Jun. 30, 2024		128,700,000								200,000