LONG-TERM DEBT - Schedule of Carrying Values and Fair Values of Debt Instruments (Detail) - USD ($) $ in Millions		Dec. 31, 2024	Dec. 31, 2023
CNK [Member]
Debt Instrument [Line Items]
Long-Term Debt, Fair Value	[1]	$ 2,903.7	$ 2,460.3
CUSA [Member]
Debt Instrument [Line Items]
Long-Term Debt, Fair Value		$ 1,902.1	$ 1,903.8

[1] The fair value of the 4.50% convertible notes was $556.5 and $1,001.6 as of December 31, 2023 and 2024, respectively.