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Investment in National CineMedia LLC - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 3 Months Ended
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Mar. 31, 2022 | Mar. 31, 2021
Schedule Of Equity Method Investments [Line Items] |  |
Estimated fair value of additional common units received | $ 0.5 |
Number of common units of NCM owned by Company | 43.2 |
Interest in common units of NCM owned by Company | 26.00% |
NCM |  |
Schedule Of Equity Method Investments [Line Items] |  |
Recognized incremental screen rental revenue and offsetting interest expense | $ 5.8 | $ 5.8
Amortization of screen advertising advances | $ 8.0 | $ 7.9
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 convertible into share of NCMI common stock, conversion ratio | 1 |
Estimated fair value of investment using NCM's stock price | $ 109.6 |
NCMI common stock price | $ 2.54 |

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