Revenue Recognition - Summary of Revenues Disaggregated Based on Major Type of Good or Service and by Reportable Operating Segment (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Total revenue		$ 921.8	$ 874.8	$ 2,235.2	$ 2,427.8
CNK [Member]
Disaggregation of Revenue [Line Items]
Total revenue		921.8	874.8	2,235.2	2,427.8
Concession Revenues | CNK [Member]
Disaggregation of Revenue [Line Items]
Total revenue		367.3	339.8	884.4	949.0
U.S. Operating Segment
Disaggregation of Revenue [Line Items]
Total revenue	[1]	741.4	682.5	1,770.4	1,896.5
U.S. Operating Segment | Admissions Revenues
Disaggregation of Revenue [Line Items]
Total revenue	[1]	375.2	350.4	894.4	968.5
U.S. Operating Segment | Concession Revenues
Disaggregation of Revenue [Line Items]
Total revenue	[1]	299.6	268.0	709.6	751.1
U.S. Operating Segment | Screen Advertising, Screen Rental and Promotional Revenues
Disaggregation of Revenue [Line Items]
Total revenue	[1],[2]	24.4	23.0	67.7	69.5
U.S. Operating Segment | Other Revenue
Disaggregation of Revenue [Line Items]
Total revenue	[1]	42.2	41.1	98.7	107.4
International Operating Segment
Disaggregation of Revenue [Line Items]
Total revenue		180.4	192.3	464.8	531.3
International Operating Segment | Admissions Revenues
Disaggregation of Revenue [Line Items]
Total revenue		85.2	93.4	221.6	264.7
International Operating Segment | Concession Revenues
Disaggregation of Revenue [Line Items]
Total revenue		67.7	71.8	174.8	197.9
International Operating Segment | Screen Advertising, Screen Rental and Promotional Revenues
Disaggregation of Revenue [Line Items]
Total revenue	[2]	15.3	16.2	38.7	39.0
International Operating Segment | Other Revenue
Disaggregation of Revenue [Line Items]
Total revenue		12.2	10.9	29.7	29.7
Consolidated | CNK [Member]
Disaggregation of Revenue [Line Items]
Total revenue		921.8	874.8	2,235.2	2,427.8
Consolidated | Admissions Revenues | CNK [Member]
Disaggregation of Revenue [Line Items]
Total revenue		460.4	443.8	1,116.0	1,233.2
Consolidated | Concession Revenues | CNK [Member]
Disaggregation of Revenue [Line Items]
Total revenue		367.3	339.8	884.4	949.0
Consolidated | Screen Advertising, Screen Rental and Promotional Revenues | CNK [Member]
Disaggregation of Revenue [Line Items]
Total revenue	[2]	39.7	39.2	106.4	108.5
Consolidated | Other Revenue | CNK [Member]
Disaggregation of Revenue [Line Items]
Total revenue		$ 54.4	$ 52.0	$ 128.4	$ 137.1

[1] U.S. segment revenue excludes intercompany transactions with the international operating segment. See Note 16 for the amount of intercompany eliminations for the periods presented.

[2] Amount includes amortization of NCM screen advertising advances. See Screen Advertising Advances and Other Deferred Revenue below.