REVENUE RECOGNITION - Summary of Revenues Disaggregated Based on Major Type of Good or Service and by Reportable Operating Segment (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Total revenue		$ 3,049.5	$ 3,066.7	$ 2,454.7
Admissions Revenues
Disaggregation of Revenue [Line Items]
Total revenue		1,522.5	1,555.6	1,246.9
Concession Revenues
Disaggregation of Revenue [Line Items]
Total revenue		1,197.8	1,192.0	938.3
Screen Advertising, Screen Rental and Promotional Revenues
Disaggregation of Revenue [Line Items]
Total revenue		146.2	144.6	127.0
Other Revenues
Disaggregation of Revenue [Line Items]
Total revenue		183.0	174.5	142.5
U.S. Operating Segment
Disaggregation of Revenue [Line Items]
Total revenue	[1],[2]	2,436.8	2,415.3	1,970.2
U.S. Operating Segment | Admissions Revenues
Disaggregation of Revenue [Line Items]
Total revenue	[1]	1,233.1	1,236.0	1,010.2
U.S. Operating Segment | Concession Revenues
Disaggregation of Revenue [Line Items]
Total revenue	[1]	969.3	952.0	763.0
U.S. Operating Segment | Screen Advertising, Screen Rental and Promotional Revenues
Disaggregation of Revenue [Line Items]
Total revenue	[1]	91.7	91.0	81.7
U.S. Operating Segment | Other Revenues
Disaggregation of Revenue [Line Items]
Total revenue	[1]	142.7	136.3	115.3
International Operating Segment
Disaggregation of Revenue [Line Items]
Total revenue		612.7	651.4	484.5
International Operating Segment | Admissions Revenues
Disaggregation of Revenue [Line Items]
Total revenue		289.4	319.6	236.7
International Operating Segment | Concession Revenues
Disaggregation of Revenue [Line Items]
Total revenue		228.5	240.0	175.3
International Operating Segment | Screen Advertising, Screen Rental and Promotional Revenues
Disaggregation of Revenue [Line Items]
Total revenue		54.5	53.6	45.3
International Operating Segment | Other Revenues
Disaggregation of Revenue [Line Items]
Total revenue		$ 40.3	$ 38.2	$ 27.2

[1] U.S. segment revenues exclude intercompany transactions with the international reportable segment. See Note 21 for additional information on intercompany eliminations.

[2] U.S. segment revenues exclude intercompany transactions with the international reportable segment. See Note 21 for additional information on intercompany eliminations