Treasury Stock and Share-Based Awards - Summary of Restricted Stock and Restricted Stock Unit Award Activity (Parenthetical) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025		Mar. 31, 2024
Restricted Stock (Member)
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Compensation expense	$ 4.5		$ 4.2
Performance Shares (Member)
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Compensation expense	3.5		2.2
Cinemark Partners Second [Member] | Restricted Stock (Member)
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Compensation expense	$ 4.2	[1]	$ 12.5

[1] Compensation expense for the three months ended March 31, 2025 includes approximately $0.3 related to a portion of the short-term field incentive compensation plan for 2025 to be settled in restricted stock.