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, 2023	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Total revenue		$ 3,066.7	$ 2,454.7	$ 1,510.5
Admissions Revenues
Disaggregation of Revenue [Line Items]
Total revenue		1,555.6	1,246.9	780.0
Concession Revenues
Disaggregation of Revenue [Line Items]
Total revenue		1,192.0	938.3	561.7
Screen Advertising, Screen Rental and Promotional Revenues
Disaggregation of Revenue [Line Items]
Total revenue		144.6	127.0	84.1
Other Revenues
Disaggregation of Revenue [Line Items]
Total revenue		174.5	142.5	84.7
U.S. Operating Segment
Disaggregation of Revenue [Line Items]
Total revenue	[1],[2]	2,415.3	1,970.2	1,293.6
U.S. Operating Segment | Admissions Revenues
Disaggregation of Revenue [Line Items]
Total revenue	[1]	1,236.0	1,010.2	671.7
U.S. Operating Segment | Concession Revenues
Disaggregation of Revenue [Line Items]
Total revenue	[1]	952.0	763.0	482.8
U.S. Operating Segment | Screen Advertising, Screen Rental and Promotional Revenues
Disaggregation of Revenue [Line Items]
Total revenue	[1]	91.0	81.7	66.2
U.S. Operating Segment | Other Revenues
Disaggregation of Revenue [Line Items]
Total revenue	[1]	136.3	115.3	72.9
International Operating Segment
Disaggregation of Revenue [Line Items]
Total revenue		651.4	484.5	216.9
International Operating Segment | Admissions Revenues
Disaggregation of Revenue [Line Items]
Total revenue		319.6	236.7	108.3
International Operating Segment | Concession Revenues
Disaggregation of Revenue [Line Items]
Total revenue		240.0	175.3	78.9
International Operating Segment | Screen Advertising, Screen Rental and Promotional Revenues
Disaggregation of Revenue [Line Items]
Total revenue		53.6	45.3	17.9
International Operating Segment | Other Revenues
Disaggregation of Revenue [Line Items]
Total revenue		$ 38.2	$ 27.2	$ 11.8

[1] U.S. segment revenues exclude intercompany transactions with the international operating segment. See Note 22 for additional information on intercompany eliminations.

[2] U.S. segment revenues exclude intercompany transactions with the international operating segment. See Note 22 for additional information on intercompany eliminations