CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) shares in Millions, $ in Millions		Total	CNK [Member]	CNK [Member] Common Stock	CNK [Member] Treasury Stock	CNK [Member] Additional Paid-In-Capital	CNK [Member] Accumulated Deficit	CNK [Member] Accumulated Other Comprehensive Loss	CNK [Member] Total Cinemark Holdings, Inc.'s Stockholders' Equity	CNK [Member] 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				127.6								0.2
Treasury Stock Balance (in shares) beginning of period at Dec. 31, 2023					(6.0)
Restricted stock forfeitures and stock withholdings related to share based awards that vested (in shares)					(0.3)
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				0.1
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)				0.9
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) losses 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				128.6								0.2
Treasury Stock Balance (in shares) ending of period at Mar. 31, 2024					(6.3)
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				127.6								0.2
Treasury Stock Balance (in shares) beginning of period at Dec. 31, 2023					(6.0)
Net (loss) income			71.9								78.8
Other comprehensive income (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				128.7								0.2
Treasury Stock Balance (in shares) ending of period at Jun. 30, 2024					(6.3)
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	(24.2)	1,509.3	(543.2)	(377.1)	614.3	9.0
Balance (in shares) beginning of period at Mar. 31, 2024				128.6								0.2
Treasury Stock Balance (in shares) beginning of period at Mar. 31, 2024					(6.3)
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)				0.1
Share based awards compensation expense											9.0			9.0			9.0
Net (loss) 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) losses for amended swap agreements			(3.7)					(3.7)	(3.7)		(3.7)					(3.7)	(3.7)
Other comprehensive income (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				128.7								0.2
Treasury Stock Balance (in shares) ending of period at Jun. 30, 2024					(6.3)
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				128.7								0.2
Treasury Stock Balance (in shares) beginning of period at Dec. 31, 2024					(6.4)
Repurchases of common stock under share repurchase program (see Note 9) (in shares)					(7.9)
Repurchases of common stock under share repurchase program (see Note 9)			(201.6)		$ (201.6)				(201.6)
Restricted stock forfeitures and stock withholdings related to share based awards that vested (in shares)					(0.6)
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				0.8
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)				0.5
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) losses 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				130.0								0.2
Treasury Stock Balance (in shares) ending of period at Mar. 31, 2025					(14.9)
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				128.7								0.2
Treasury Stock Balance (in shares) beginning of period at Dec. 31, 2024					(6.4)
Dividends paid to stockholders, $0.08 per common share (see Note 6)	[1]	$ 19.5
Net (loss) income			56.1								66.1
Other comprehensive income (loss)			19.4								19.4
Balance, end of period at Jun. 30, 2025			457.0	$ 0.1	$ (322.2)	1,293.0	(127.6)	(395.5)	447.8	9.2	1,001.1	$ 49.5	(24.2)	1,550.0	(185.1)	(398.3)	991.9	9.2
Balance (in shares) ending of period at Jun. 30, 2025				130.0								0.2
Treasury Stock Balance (in shares) ending of period at Jun. 30, 2025					(14.9)
Balance, beginning 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) beginning of period at Mar. 31, 2025				130.0								0.2
Treasury Stock Balance (in shares) beginning of period at Mar. 31, 2025					(14.9)
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			7.3			7.3			7.3
Dividends paid to stockholders, $0.08 per common share (see Note 6)			(9.4)				(9.4)		(9.4)
Share based awards compensation expense											6.9			6.9			6.9
Net (loss) income			94.7				93.5		93.5	1.2	100.4				99.2		99.2	1.2
Distributions to noncontrolling interests			(0.4)							(0.4)	(0.4)							(0.4)
Amortization of accumulated (gains) losses for amended swap agreements			0.9					0.9	0.9		0.9					0.9	0.9
Other comprehensive income (loss)			6.6					6.6	6.6		6.6					6.6	6.6
Balance, end of period at Jun. 30, 2025			$ 457.0	$ 0.1	$ (322.2)	$ 1,293.0	$ (127.6)	$ (395.5)	$ 447.8	$ 9.2	$ 1,001.1	$ 49.5	$ (24.2)	$ 1,550.0	$ (185.1)	$ (398.3)	$ 991.9	$ 9.2
Balance (in shares) ending of period at Jun. 30, 2025				130.0								0.2
Treasury Stock Balance (in shares) ending of period at Jun. 30, 2025					(14.9)

[1] Of the total dividends recorded during the three and six months ended June 30, 2025, $0.2 and $0.4, respectively, were related to outstanding performance and restricted stock units and will not be paid until such units vest. See Note 9.