v3.22.0.1
THE COMPANY AND SIGNIFICANT ACCOUNTING POLICIES - Investments, Goodwill, Payables, Leases (Details)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2021
USD ($)
item
Sep. 30, 2021
item
Dec. 31, 2020
USD ($)
Sep. 30, 2020
USD ($)
Mar. 31, 2020
USD ($)
Dec. 31, 2021
USD ($)
item
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 26, 2013
Investments                  
Impairment of definite-lived intangible assets             $ 14.4    
Impairment of indefinite-lived intangible assets           $ 0.0 15.2 $ 0.0  
Number of theatres | item 2 2       3      
Number of Reporting Units | item           2      
Goodwill $ 2,429.8   $ 2,547.3     $ 2,429.8 2,547.3 4,789.1  
Goodwill impairment     405.3 $ 156.8 $ 1,744.3   2,306.4    
Accounts payable related to checks issued but not yet presented to bank $ 3.6   1.8     $ 3.6 1.8    
Optional renewal term, operating lease 20 years         20 years      
U.S.                  
Investments                  
Goodwill $ 1,796.5   1,796.5     $ 1,796.5 1,796.5 3,072.6  
Goodwill impairment       151.2 1,124.9        
International markets                  
Investments                  
Goodwill $ 633.3   750.8     $ 633.3 $ 750.8 $ 1,716.5  
Goodwill impairment     $ 405.3 $ 5.6 $ 619.4        
Nordic.                  
Investments                  
Ownership percentage 50.00%         50.00%      
Number of theatres | item           57      
Minimum                  
Investments                  
Initial base terms of operating leases 12 years         12 years      
Operating lease, remaining lease term 1 year         1 year      
Maximum                  
Investments                  
Ownership percentage 50.00%         50.00%      
Initial base terms of operating leases 15 years         15 years      
Operating lease, remaining lease term 25 years         25 years      
NCM                  
Investments                  
Ownership percentage                 4.00%
SV Holdco                  
Investments                  
Ownership percentage 18.30%         18.30%      
SV Holdco | Class C Units                  
Investments                  
Ownership percentage 18.30%         18.30%      
DCM                  
Investments                  
Ownership percentage 50.00%         50.00%      
AC JV, LLC                  
Investments                  
Ownership percentage 32.00%         32.00%      
DCIP                  
Investments                  
Ownership percentage 29.00%         29.00%      
DCDC                  
Investments                  
Ownership percentage 14.60%         14.60%      
SCC                  
Investments                  
Ownership percentage 10.00%         10.00%      
U.S. theatres and IMAX screen                  
Investments                  
Ownership percentage 50.00%         50.00%      
Number of theatres | item           3