GOODWILL (Details) $ in Millions	6 Months Ended
	Jun. 30, 2022 USD ($)
Goodwill [Roll Forward]
Balance at the beginning of the period	$ 2,429.8
Currency translation adjustment	(75.2)
Balance at the end of the period	2,354.6
Domestic theatres
Goodwill [Roll Forward]
Balance at the beginning of the period	1,796.5
Balance at the end of the period	1,796.5
International theatres
Goodwill [Roll Forward]
Balance at the beginning of the period	633.3
Currency translation adjustment	(75.2)
Balance at the end of the period	$ 558.1