Investment in National CineMedia LLC - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions			3 Months Ended
	Mar. 20, 2023	Feb. 17, 2023	Mar. 31, 2023	Mar. 31, 2022
Schedule Of Equity Method Investments [Line Items]
Number of additional common units of NCM receive under common unit adjustment agreement			4,800,000
Company Recorded AnImpairment Charge			$ 0.7
NCM
Schedule Of Equity Method Investments [Line Items]
Recognized incremental screen rental revenue and offsetting interest expense			5.7	$ 5.8
Amortization of screen advertising advances			$ 8.1	$ 8.0
NCM | Minimum
Schedule Of Equity Method Investments [Line Items]
Percentage of incremental borrowing rates			4.40%
NCM | Maximum
Schedule Of Equity Method Investments [Line Items]
Percentage of incremental borrowing rates			8.30%
Investment In NCM
Schedule Of Equity Method Investments [Line Items]
Common share units in Ncm in exchange	1,700,000	43,700,000
Number of Ncm to redeem shares		42,000,000.0
Estimated fair value of investment using NCM's stock price			$ 5.7
NCMI common stock price			$ 0.13
Deferred revenue or NCM screen advertising advances extended term			2041-02
Investment In NCMI
Schedule Of Equity Method Investments [Line Items]
New issued shares of NCMI	1,700,000	42,000,000.0