Investment in NCMI/NCM - Summary of Activity with NCM Included in Company's Consolidated Financial Statements (Parenthetical) (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($)
Equity Method Investments and Joint Ventures [Abstract]
Company's beverage concessionaire advertising costs	$ 7.1
Amounts recognized as accounts receivable	$ 5.6