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
		Mar. 31, 2025	Mar. 31, 2024
Disaggregation of Revenue [Line Items]
Total revenue		$ 540.7	$ 579.2
CNK [Member]
Disaggregation of Revenue [Line Items]
Total revenue		540.7	579.2
Concession Revenues | CNK [Member]
Disaggregation of Revenue [Line Items]
Total revenue		210.4	224.2
U.S. Operating Segment
Disaggregation of Revenue [Line Items]
Total revenue	[1]	417.1	457.0
U.S. Operating Segment | Admissions Revenues
Disaggregation of Revenue [Line Items]
Total revenue	[1]	207.6	231.8
U.S. Operating Segment | Concession Revenues
Disaggregation of Revenue [Line Items]
Total revenue	[1]	164.4	178.6
U.S. Operating Segment | Screen Advertising, Screen Rental and Promotional Revenues
Disaggregation of Revenue [Line Items]
Total revenue	[1],[2]	20.9	21.0
U.S. Operating Segment | Other Revenue
Disaggregation of Revenue [Line Items]
Total revenue	[1]	24.2	25.6
International Operating Segment
Disaggregation of Revenue [Line Items]
Total revenue		123.6	122.2
International Operating Segment | Admissions Revenues
Disaggregation of Revenue [Line Items]
Total revenue		56.5	58.0
International Operating Segment | Concession Revenues
Disaggregation of Revenue [Line Items]
Total revenue		46.0	45.6
International Operating Segment | Screen Advertising, Screen Rental and Promotional Revenues
Disaggregation of Revenue [Line Items]
Total revenue	[2]	11.5	10.7
International Operating Segment | Other Revenue
Disaggregation of Revenue [Line Items]
Total revenue		9.6	7.9
Consolidated | CNK [Member]
Disaggregation of Revenue [Line Items]
Total revenue		540.7	579.2
Consolidated | Admissions Revenues | CNK [Member]
Disaggregation of Revenue [Line Items]
Total revenue		264.1	289.8
Consolidated | Concession Revenues | CNK [Member]
Disaggregation of Revenue [Line Items]
Total revenue		210.4	224.2
Consolidated | Screen Advertising, Screen Rental and Promotional Revenues | CNK [Member]
Disaggregation of Revenue [Line Items]
Total revenue	[2]	32.4	31.7
Consolidated | Other Revenue | CNK [Member]
Disaggregation of Revenue [Line Items]
Total revenue		$ 33.8	$ 33.5

[1] U.S. segment revenue excludes intercompany transactions with the international reportable 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.