v3.25.0.1
CORPORATE BORROWINGS AND FINANCE LEASE LIABILITIES - Senior Unsecured Convertible Notes narrative (Details)
$ / shares in Units, $ in Millions
5 Months Ended 12 Months Ended
Jul. 22, 2024
USD ($)
$ / shares
Feb. 14, 2022
USD ($)
Jul. 31, 2020
USD ($)
item
Dec. 31, 2024
USD ($)
$ / shares
Dec. 31, 2024
USD ($)
$ / shares
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Oct. 15, 2020
USD ($)
Apr. 24, 2020
USD ($)
CORPORATE BORROWINGS AND FINANCE LEASE OBLIGATIONS                  
Long-Term Debt, Gross       $ 4,134.5 $ 4,134.5 $ 4,504.3      
Amortization of Debt Discount (Premium)         (17.5) (55.6) $ (65.4)    
Redemption price of debt instrument (as a percent)   107.50%              
Total noncurrent carrying value of corporate borrowings and finance lease liabilities       4,055.8 4,055.8 4,602.3      
Debt issuance costs       47.2 47.2 31.1      
Interest expense         401.8 369.6 336.4    
Other expense         156.2 $ 76.8 $ (55.2)    
Second Lien Notes                  
CORPORATE BORROWINGS AND FINANCE LEASE OBLIGATIONS                  
Long-Term Debt, Gross     $ 1,997.4            
Amortization of Debt Discount (Premium)     $ 535.1            
PIK interest rate     12.00%            
Number of interest periods | item     3            
Percentage of redemption of debt on aggregate principal amount and accrued and unpaid interest     100.00%            
Redemption price of debt instrument (as a percent)     101.00%            
Debt instrument face amount     $ 1,289.1 $ 173.2 $ 173.2        
Percentage of difference between the present value of the old and new cash flows         10.00%        
Principal amount     $ 1,462.3            
Stated interest rate (as a percent)     10.00%            
Second Lien Notes | Redemption Period One                  
CORPORATE BORROWINGS AND FINANCE LEASE OBLIGATIONS                  
Percentage of redemption of debt on aggregate principal amount and accrued and unpaid interest     106.00%            
Second Lien Notes | Redemption Period Two                  
CORPORATE BORROWINGS AND FINANCE LEASE OBLIGATIONS                  
Percentage of redemption of debt on aggregate principal amount and accrued and unpaid interest     103.00%            
Second Lien Notes | Redemption period three                  
CORPORATE BORROWINGS AND FINANCE LEASE OBLIGATIONS                  
Percentage of redemption of debt on aggregate principal amount and accrued and unpaid interest     100.00%            
First Lien Notes due 2026                  
CORPORATE BORROWINGS AND FINANCE LEASE OBLIGATIONS                  
Redemption price of debt instrument (as a percent)     100.00%            
Debt instrument face amount   $ 300.0 $ 200.0            
Stated interest rate (as a percent)   10.50%   10.50% 10.50%        
First Lien Notes due 2026 | Class A common stock                  
CORPORATE BORROWINGS AND FINANCE LEASE OBLIGATIONS                  
Common Stock, Value, Outstanding     20.2            
First Lien Notes due 2025                  
CORPORATE BORROWINGS AND FINANCE LEASE OBLIGATIONS                  
Debt instrument face amount                 $ 500.0
Stated interest rate (as a percent)   10.50%           10.50% 10.50%
Total noncurrent carrying value of corporate borrowings and finance lease liabilities               $ 10.0  
Senior Subordinated Notes                  
CORPORATE BORROWINGS AND FINANCE LEASE OBLIGATIONS                  
Debt instrument face amount     $ 1,782.5 $ 235.0 $ 235.0        
Exchangeable Notes                  
CORPORATE BORROWINGS AND FINANCE LEASE OBLIGATIONS                  
Reduction in principal amount       (57.6)          
Long-Term Debt, Gross $ 503.8     445.5 $ 445.5        
Amortization of Debt Discount (Premium)       2.9          
PIK interest rate 8.00%       8.00%        
Redemption price of debt instrument (as a percent) 100.00%                
Debt instrument face amount $ 414.4     $ 427.6 $ 427.6        
If-converted value in excess of principal         $ 88.3        
Price per share (in dollars per share) | $ / shares       $ 3.98 $ 3.98        
Conversion rate 176.6379                
Conversion price (in dollars per share) | $ / shares $ 5.66                
Effective interest rate 15.12%                
Debt issuance costs $ 23.2     $ 23.3 $ 23.3        
Interest expense         $ 18.2        
Threshold percentage of stock price trigger 113.00%