LONG-TERM DEBT - Schedule of Carrying Values and Fair Values of Debt Instruments (Detail) - USD ($) $ in Millions		Dec. 31, 2023	Dec. 31, 2022
CNK [Member]
Debt Instrument [Line Items]
Long-Term Debt, Fair Value	[1]	$ 2,460.3	$ 2,210.5
CUSA [Member]
Debt Instrument [Line Items]
Long-Term Debt, Fair Value		$ 1,903.8	$ 1,771.3

[1] The fair value of the 4.50% convertible notes was $439.2 and $556.5 as of December 31, 2022 and
2023, respectively.