INVESTMENT IN NATIONAL CINEMEDIA, INC / NATIONAL CINEMEDIA LLC - Summary of Activity with NCM Included in Company's Consolidated Financial Statements (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Schedule Of Equity Method Investments [Line Items]
Company's beverage concessionaire advertising costs	$ 8.9	$ 7.5	$ 4.9
Amounts recognized as accounts receivable	$ 4.9	$ 4.9