INVESTMENT IN NATIONAL CINEMEDIA, INC / NATIONAL CINEMEDIA LLC - Summary of Common Units Received Under Adjustment Agreement (Detail) - USD ($) shares in Millions, $ in Millions		3 Months Ended		12 Months Ended
		Apr. 13, 2022	Apr. 14, 2021	Dec. 31, 2023		Dec. 31, 2022	Dec. 31, 2021
Schedule Of Equity Method Investments [Line Items]
Number of Common Units Received				4.8
Value Of Common Units Received From Company One				$ 0.0	[1]	$ 1.3	$ 10.2
Annual Common Unit Adjustment [Member]
Schedule Of Equity Method Investments [Line Items]
Date Common Units Received		Apr. 13, 2022	Apr. 14, 2021
Number of Common Units Received		0.5	2.3
Value Of Common Units Received From Company One	[2]	$ 1.3	$ 10.2

[1] Additions to theatre properties and equipment included in accounts payable as of December 31, 2022 and 2023 were $12.0 and $6.6 respectively.

[2] The fair value of the common units received was estimated based on the market price of NCMI common stock (Level 1 input as defined in FASB ASC Topic 820) at the time the common units were determined, adjusted for volatility associated with the estimated time period it would take to convert the common units and register the respective shares