v3.26.3
CORPORATE BORROWINGS AND FINANCE LEASE LIABILITIES - Long-term debt and lease obligations (Details) - USD ($)
$ in Millions
 9 Months Ended 12 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Apr. 17, 2026
Jul. 01, 2025
CORPORATE BORROWINGS AND FINANCE LEASE LIABILITIES          
Total principal amount of corporate borrowings $ 3,782.6   $ 4,024.2    
Finance lease liabilities 50.7   52.5    
Accrued paid-in-kind interest 18.7   2.7    
Deferred financing costs (70.3)   (64.4)    
Net discount (5.3)   (68.5)    
Total carrying value of corporate borrowings and finance lease liabilities 3,798.1   4,091.0    
Current maturities of corporate borrowings (24.0)   (19.9)    
Current maturities of finance lease liabilities (7.5)   (5.8)    
Total noncurrent carrying value of corporate borrowings and finance lease liabilities $ 3,766.6   $ 4,065.3    
Credit Agreement-Term Loans due 2029          
CORPORATE BORROWINGS AND FINANCE LEASE LIABILITIES          
Effective interest rate 9.891%   10.731%    
Total principal amount of corporate borrowings $ 1,979.2   $ 1,994.2    
Net discount (24.5)   (32.6)    
Odeon Term Loan Due 2031          
CORPORATE BORROWINGS AND FINANCE LEASE LIABILITIES          
Total principal amount of corporate borrowings 423.9        
Deferred financing costs       $ (22.0)  
Net discount $ (7.9)     $ (8.5)  
Stated interest rate (as a percent) 10.50%     10.50%  
Senior Secured Notes due 2029          
CORPORATE BORROWINGS AND FINANCE LEASE LIABILITIES          
Total principal amount of corporate borrowings $ 903.4   877.1    
Net discount $ 51.4   $ 62.5    
Interest rate cash (as a percent) 9.00%   9.00%    
PIK interest rate (as a percent) 6.00%   6.00%    
6.00%/8.00% Cash/PIK Toggle Senior Secured Exchangeable Notes due 2030          
CORPORATE BORROWINGS AND FINANCE LEASE LIABILITIES          
Effective interest rate 15.12%        
Total principal amount of corporate borrowings $ 116.1   $ 111.6   $ 337.4
Accrued paid-in-kind interest 2.7   0.4    
Deferred financing costs (4.8)   (5.2)   (17.1)
Net discount (24.3)   (26.4)    
Bifurcated embedded derivative $ 21.7   $ 12.6   88.3
Interest rate cash (as a percent) 6.00% 6.00% 6.00%    
PIK interest rate (as a percent) 8.00% 8.00% 8.00%    
First Lien Notes due 2029          
CORPORATE BORROWINGS AND FINANCE LEASE LIABILITIES          
Total principal amount of corporate borrowings $ 360.0   $ 360.0   590.0
Deferred financing costs         (5.6)
Stated interest rate (as a percent) 7.50% 7.50% 7.50%    
Odeon Senior Secured Notes due 2027          
CORPORATE BORROWINGS AND FINANCE LEASE LIABILITIES          
Total principal amount of corporate borrowings     $ 400.0    
Net discount     $ (14.6)    
Stated interest rate (as a percent)     12.75%    
Senior Secured Exchangeable Notes due 2030          
CORPORATE BORROWINGS AND FINANCE LEASE LIABILITIES          
Effective interest rate 16.54%        
Total principal amount of corporate borrowings     $ 155.8    
Deferred financing costs     (14.8)    
Net discount     (57.4)    
Bifurcated embedded derivative     $ 131.9   $ 41.7
Interest rate cash (as a percent)     1.50%    
6.125% Senior Subordinated Notes due 2027          
CORPORATE BORROWINGS AND FINANCE LEASE LIABILITIES          
Total principal amount of corporate borrowings     $ 125.5    
Stated interest rate (as a percent)     6.125%