v3.22.4
GOODWILL AND INTANGIBLE ASSETS (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2020
Sep. 30, 2020
Mar. 31, 2020
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Goodwill [Roll Forward]            
Gross Carrying Amount, Balance at the beginning of the period       $ 4,795.2 $ 4,922.7  
Accumulated Impairment Losses, Balance at the beginning of the period $ (2,375.4)     (2,252.4) (2,365.4) $ (2,375.4)
Net Carrying Amount, Balance at the beginning of the period       2,429.8 2,547.3  
Goodwill impairment adjustment           (2,306.4)
Gross Carrying Amount, Currency translation adjustment       (200.8) (86.2)  
Accumulated Impairment Losses, Currency translation adjustment       113.0 10.0  
Net Carrying Amount, Currency translation adjustment       (87.8) (76.2)  
Gross Carrying Amount, Balance at the end of the period 4,922.7     4,594.4 4,795.2 4,922.7
Accumulated Impairment Losses, Balance at the end of the period       (2,365.4) (2,375.4)  
Net Carrying Amount, Balance at the end of the period 2,547.3     2,342.0 2,429.8 2,547.3
Domestic theatres            
Goodwill [Roll Forward]            
Goodwill impairment adjustment           (1,276.1)
International theatres            
Goodwill [Roll Forward]            
Goodwill impairment adjustment           (1,030.3)
U.S.            
Goodwill [Roll Forward]            
Gross Carrying Amount, Balance at the beginning of the period       3,072.6 3,072.6  
Accumulated Impairment Losses, Balance at the beginning of the period (1,276.1)     (1,276.1) (1,276.1) (1,276.1)
Net Carrying Amount, Balance at the beginning of the period       1,796.5 1,796.5  
Goodwill impairment adjustment   $ (151.2) $ (1,124.9)      
Gross Carrying Amount, Balance at the end of the period 3,072.6     3,072.6 3,072.6 3,072.6
Accumulated Impairment Losses, Balance at the end of the period       (1,276.1) (1,276.1)  
Net Carrying Amount, Balance at the end of the period 1,796.5     1,796.5 1,796.5 1,796.5
International markets            
Goodwill [Roll Forward]            
Gross Carrying Amount, Balance at the beginning of the period       1,722.6 1,850.1  
Accumulated Impairment Losses, Balance at the beginning of the period (1,099.3)     (976.3) (1,089.3) (1,099.3)
Net Carrying Amount, Balance at the beginning of the period       633.3 750.8  
Goodwill impairment adjustment (405.3) $ (5.6) $ (619.4)      
Gross Carrying Amount, Currency translation adjustment       (200.8) (86.2)  
Accumulated Impairment Losses, Currency translation adjustment       113.0 10.0  
Net Carrying Amount, Currency translation adjustment       (87.8) (76.2)  
Gross Carrying Amount, Balance at the end of the period 1,850.1     1,521.8 1,722.6 1,850.1
Accumulated Impairment Losses, Balance at the end of the period       (1,089.3) (1,099.3)  
Net Carrying Amount, Balance at the end of the period $ 750.8     $ 545.5 633.3 $ 750.8
Estonia            
Goodwill [Roll Forward]            
Baltics disposition         3.7  
Lithuania            
Goodwill [Roll Forward]            
Baltics disposition         $ 37.6