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. 01, 2024	Apr. 01, 2024	[1]	Apr. 13, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Schedule Of Equity Method Investments [Line Items]
Number of Common Units Received		0.1
Value Of Common Units Received From Company One		$ 0.5				$ 0.5	$ 0.0	$ 1.3
Annual Common Unit Adjustment [Member]
Schedule Of Equity Method Investments [Line Items]
Date Common Units Received			Apr. 01, 2024		Apr. 13, 2022
Number of Common Units Received			0.1		0.5
Value Of Common Units Received From Company One	[2]		$ 0.5		$ 1.3

[1] See discussion above related to the cash settlement of the common units received in 2024.

[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.