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THE COMPANY AND SIGNIFICANT ACCOUNTING POLICIES - Other Expense (Income) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Other Expense (Income):      
(Gain) loss on extinguishment of debt $ (38.9) $ (142.8) $ 92.8
Term Loan modification - third party fees 42.3    
Derivative liability fair value decrease for embedded conversion feature in the Exchangeable Notes due 2030 (75.8)    
Equity in earnings of non-consolidated entities (12.4) (7.7) $ 1.6
Derivative stockholder settlement   $ (14.0)  
Vendor dispute settlement (36.2)    
Other settlement proceeds $ (3.6)    
Gain on Business Interruption Insurance Recovery, Statement of Income or Comprehensive Income [Extensible Enumeration] Total other income Total other income Total other income
Total other income $ (156.2) $ (76.8) $ 55.2
Business interruption insurance recoveries (0.1) (1.3) (0.3)
Other expense      
Other Expense (Income):      
Foreign currency transaction (gains) losses 7.0 (17.8) (12.3)
Non-operating components of net periodic benefit cost 1.8 1.4 (0.6)
Financing fees related to modification of debt agreements (40.2) 110.2  
Decreases related to contingent lease guarantees     (0.2)
Governmental assistance - International markets (0.1) (3.8) (23.0)
Governmental assistance - U.S. markets   (1.0) (2.8)
Other expense | Senior Subordinated Notes due 2025      
Other Expense (Income):      
(Gain) loss on extinguishment of debt 2.7    
Other expense | Senior Subordinated Notes due 2026      
Other Expense (Income):      
(Gain) loss on extinguishment of debt (1.3) (2.3)  
Other expense | Senior Subordinated Notes due 2027      
Other Expense (Income):      
(Gain) loss on extinguishment of debt     (3.7)
Other expense | Second Lien Notes      
Other Expense (Income):      
(Gain) loss on extinguishment of debt $ (40.3) $ (140.5) (75.0)
Other expense | Odeon Term Loan Facility      
Other Expense (Income):      
(Gain) loss on extinguishment of debt     36.5
Other expense | First Lien Toggle Notes due 2026      
Other Expense (Income):      
(Gain) loss on extinguishment of debt     32.9
Other expense | First Lien Notes due 2025      
Other Expense (Income):      
(Gain) loss on extinguishment of debt     47.7
Other expense | First Lien Notes due 2026      
Other Expense (Income):      
(Gain) loss on extinguishment of debt     $ 54.4