v3.26.1
CORPORATE BORROWINGS AND FINANCE LEASE LIABILITIES - Long-term debt and lease obligations (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Jun. 24, 2026
Apr. 17, 2026
Feb. 24, 2026
CORPORATE BORROWINGS AND FINANCE LEASE LIABILITIES                
Total principal amount of corporate borrowings $ 3,914.2   $ 3,914.2   $ 4,024.2      
Finance lease liabilities 52.6   52.6   52.5      
Accrued paid-in-kind interest 2.8   2.8   2.7      
Deferred financing costs (75.8)   (75.8)   (64.4)      
Net discount (4.9)   (4.9)   (68.5)      
Total carrying value of corporate borrowings and finance lease liabilities 3,904.2   3,904.2   4,091.0      
Current maturities of corporate borrowings (148.9)   (148.9)   (19.9)      
Current maturities of finance lease liabilities (7.4)   (7.4)   (5.8)      
Total noncurrent carrying value of corporate borrowings and finance lease liabilities $ 3,747.9   $ 3,747.9   $ 4,065.3      
Credit Agreement-Term Loans due 2029                
CORPORATE BORROWINGS AND FINANCE LEASE LIABILITIES                
Effective interest rate 10.639%   10.639%   10.731%      
Total principal amount of corporate borrowings $ 1,984.2   $ 1,984.2   $ 1,994.2      
Net discount (27.2)   (27.2)   (32.6)      
Odeon Credit Agreement - 10.5% Term Loans due 2031                
CORPORATE BORROWINGS AND FINANCE LEASE LIABILITIES                
Total principal amount of corporate borrowings 425.0   425.0          
Deferred financing costs             $ (21.4)  
Net discount $ (8.2)   $ (8.2)       $ (8.5)  
Stated interest rate (as a percent) 10.50%   10.50%       10.50%  
Senior Secured Notes due 2029                
CORPORATE BORROWINGS AND FINANCE LEASE LIABILITIES                
Total principal amount of corporate borrowings $ 903.4   $ 903.4   877.1      
Net discount $ 55.6   $ 55.6   $ 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%   15.12%          
Total principal amount of corporate borrowings $ 116.1   $ 116.1   $ 111.6      
Accrued paid-in-kind interest 0.4   0.4   0.4      
Deferred financing costs (5.0)   (5.0)   (5.2)      
Net discount (25.1)   (25.1)   (26.4)      
Bifurcated embedded derivative $ 15.3   $ 15.3   $ 12.6      
Interest rate cash (as a percent) 6.00% 6.00% 6.00% 6.00% 6.00%      
PIK interest rate (as a percent) 8.00% 8.00% 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   $ 360.0      
Stated interest rate (as a percent) 7.50%   7.50%   7.50%      
Odeon Senior Secured Notes 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%     12.75%
Senior Secured Exchangeable Notes due 2030                
CORPORATE BORROWINGS AND FINANCE LEASE LIABILITIES                
Effective interest rate 16.54%   16.54%          
Total principal amount of corporate borrowings         $ 155.8      
Deferred financing costs         (14.8)      
Net discount         (57.4)      
Bifurcated embedded derivative         $ 131.9      
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   $ 125.5   $ 125.5 $ 125.5    
Stated interest rate (as a percent) 6.125%   6.125%   6.125%