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Investments in Affiliates - Summary of Activity for Each of Company's Investments in affiliates (Detail) - Other Affiliates [Member] $ in Millions | 9 Months Ended
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Sep. 30, 2024 USD ($)
Schedule Of Equity Method Investments [Line Items] |
Investments, beginning balance | $ 23.6
Cash distributions received | (5.1)
Equity income | 11.3
Investments, ending balance | 29.8
AC JV, LLC |
Schedule Of Equity Method Investments [Line Items] |
Investments, beginning balance | 3.4
Cash distributions received | (5.1)
Equity income | 9.6
Investments, ending balance | 7.9
Digital Cinema Distribution Coalition |
Schedule Of Equity Method Investments [Line Items] |
Investments, beginning balance | 2.1
Cash distributions received | 0.0
Equity income | 0.4
Investments, ending balance | 2.5
FE Concepts, LLC |
Schedule Of Equity Method Investments [Line Items] |
Investments, beginning balance | 18.1
Cash distributions received | 0.0
Equity income | 1.3
Investments, ending balance | $ 19.4

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