Treasury Stock and Share Based Awards - Summary of Restricted Stock and Restricted Stock Unit Award Activity (Parenthetical) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Restricted Stock (Member)
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Compensation expense	$ 12.5	$ 12.0
Performance Shares (Member)
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Compensation expense	$ 6.4	4.2
Cinemark Partners Second [Member] | Restricted Stock Units (RSUs)
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Weighted average period remaining	1 year 9 months 18 days
Cinemark Partners Second [Member] | Restricted Stock (Member)
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Compensation expense	$ 11.6	$ 11.3