v3.22.2.2
INVESTMENTS (Details)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended 9 Months Ended
Mar. 14, 2022
USD ($)
$ / shares
shares
Mar. 31, 2022
USD ($)
shares
Sep. 30, 2022
USD ($)
Sep. 30, 2021
USD ($)
Sep. 30, 2022
USD ($)
item
Sep. 30, 2021
USD ($)
Mar. 30, 2022
$ / shares
Investments              
Recorded equity in (earnings) loss     $ 2.8 $ 6.7 $ (3.3) $ 1.2  
Exhibitor Services Agreement              
Investments              
Value of common units returned under Unit Adjustment agreement         $ (15.0)    
U.S.              
Investments              
Number of theatres with partnership interests | item         3    
Europe              
Investments              
Number of theatres with partnership interests | item         56    
NCM              
Investments              
Common units returned under Common Unit Adjustment Agreement | shares   5,954,646          
Price per share (in dollars per share) | $ / shares             $ 2.52
Equity Method Investments Ownership Transactions [Abstract]              
Unrealized loss (gain) on investments     (1.6)   $ (11.1)    
NCM | Exhibitor Services Agreement              
Investments              
Value of common units returned under Unit Adjustment agreement   $ 15.0          
Hycroft              
Equity Method Investments Ownership Transactions [Abstract]              
Cost of investment $ 27.9            
Number of shares purchased | shares 23,400,000            
Stock split conversion ratio 1            
Price per unit in equity method investment | $ / shares $ 1.193            
Number of shares to be received for each unit | shares 1            
Unrealized loss (gain) on investments         (3.4)    
Hycroft | Investment Income              
Equity Method Investments Ownership Transactions [Abstract]              
Unrealized loss (gain) on investments     $ 19.5   $ 3.4    
57 Theatres | Europe              
Investments              
Ownership percentage     50.00%   50.00%    
Investment in Hycroft Mining Holding Corporation Warrants              
Investments              
Price per share (in dollars per share) | $ / shares $ 1.068            
Equity Method Investments Ownership Transactions [Abstract]              
Number of shares to be received for each unit | shares 1            
Term 5 years            
Non consolidated investee              
Investments              
Recorded equity in (earnings) loss     $ (2.8) $ (6.7) $ 3.3 $ (1.2)  
DCM              
Investments              
Ownership percentage     50.00%   50.00%    
SV Holdco              
Investments              
Ownership percentage     18.40%   18.40%    
AC JV, LLC              
Investments              
Ownership percentage     32.00%   32.00%    
SCC              
Investments              
Ownership percentage     10.00%   10.00%    
DCDC              
Investments              
Ownership percentage     14.60%   14.60%    
Minimum | NCM              
Investments              
Percentage change in the total annual attendance of all the founding members required to cause an earlier common unit adjustment     2.00%   2.00%