Investment in National CineMedia Inc. - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions			3 Months Ended			6 Months Ended
	Apr. 15, 2024	Apr. 01, 2024	Jun. 30, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024		Jun. 30, 2023
Schedule Of Equity Method Investments [Line Items]
Number of additional common units of NCM receive under common unit adjustment agreement		100,000
Estimated fair value of additional common units received		$ 0.5				$ 0.5		$ 0.0
NCM
Schedule Of Equity Method Investments [Line Items]
Recognized incremental screen rental revenue and offsetting interest expense						11.1		11.4
Amortization of screen advertising advances						$ 16.2		16.2
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 unit redemption	$ 4.95
Deferred revenue or NCM screen advertising advances extended term						2041-02
Investment In NCMI
Schedule Of Equity Method Investments [Line Items]
Common unit redemption price	$ 0.6
Reduction in investment in NCM			$ 0.5
Net (loss) gain on investment in NCMI			$ 0.1			$ 0.1
Number of common units of NCM owned by Company			4,400,000			4,400,000
Unrealized gain			$ 3.3	$ 9.2	$ 0.0	$ 1.1	[1]	$ 9.2
Interest in common units of NCM owned by Company			4.50%			4.50%
Amortization of screen advertising advances						$ 0.0

[1] See Investment in National CineMedia below.