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		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Disaggregation of Revenue [Line Items]
Total revenue		$ 942.3	$ 744.1	$ 1,553.0	$ 1,204.6
Admissions Revenues
Disaggregation of Revenue [Line Items]
Total revenue		478.4	381.9	789.4	617.7
Concession Revenues
Disaggregation of Revenue [Line Items]
Total revenue		373.4	286.0	609.2	459.0
Screen Advertising, Screen Rental and Promotional Revenues
Disaggregation of Revenue [Line Items]
Total revenue	[1]	38.2	32.7	69.3	59.5
Other Revenue
Disaggregation of Revenue [Line Items]
Total revenue		52.3	43.5	85.1	68.4
U.S. Operating Segment
Disaggregation of Revenue [Line Items]
Total revenue	[2]	734.9	600.8	1,214.0	972.8
U.S. Operating Segment | Admissions Revenues
Disaggregation of Revenue [Line Items]
Total revenue	[2]	373.4	309.7	618.1	501.5
U.S. Operating Segment | Concession Revenues
Disaggregation of Revenue [Line Items]
Total revenue	[2]	296.3	234.6	483.1	375.7
U.S. Operating Segment | Screen Advertising, Screen Rental and Promotional Revenues
Disaggregation of Revenue [Line Items]
Total revenue	[1],[2]	24.7	21.4	46.5	40.1
U.S. Operating Segment | Other Revenue
Disaggregation of Revenue [Line Items]
Total revenue	[2]	40.5	35.1	66.3	55.5
International Operating Segment
Disaggregation of Revenue [Line Items]
Total revenue		207.4	143.3	339.0	231.8
International Operating Segment | Admissions Revenues
Disaggregation of Revenue [Line Items]
Total revenue		105.0	72.2	171.3	116.2
International Operating Segment | Concession Revenues
Disaggregation of Revenue [Line Items]
Total revenue		77.1	51.4	126.1	83.3
International Operating Segment | Screen Advertising, Screen Rental and Promotional Revenues
Disaggregation of Revenue [Line Items]
Total revenue	[1]	13.5	11.3	22.8	19.4
International Operating Segment | Other Revenue
Disaggregation of Revenue [Line Items]
Total revenue		$ 11.8	$ 8.4	$ 18.8	$ 12.9

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

[2] 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.