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Investments in National CineMedia Inc. and Other Affiliates - Summary of Transactions with Each of the Company's Other Investees (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
AC JV, LLC | Film rentals and advertising |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |
Event fees paid | [1] | $ 3.1 | $ 10.0 | $ 14.8 | $ 21.5
Digital Cinema Distribution Coalition |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |
Content delivery fees paid | [1] | $ 0.1 | $ 0.1 | $ 0.4 | $ 0.4
[1] | Included in film rentals and advertising costs on the condensed consolidated statements of income.

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