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LONG-TERM DEBT - Schedule of carrying values and fair values of debt instruments (Detail) - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021
CNK [Member]
Debt Instrument [Line Items]
Long-Term Debt, Fair Value	[1]	$ 2,210.5	$ 2,749.8
CUSA [Member]
Debt Instrument [Line Items]
Long-Term Debt, Fair Value		$ 1,771.3	$ 2,058.0
[1] The fair value of the 4.50% convertible senior notes was $691.9 and $439.2 as of December 31, 2021 and 2022, respectively.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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