v3.25.4
STOCKHOLDERS' DEFICIT - Share Issuances (Details) - USD ($)
$ in Millions
1 Months Ended 12 Months Ended
Dec. 06, 2024
Jan. 31, 2025
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 10, 2025
Dec. 09, 2025
STOCKHOLDERS' DEFICIT              
Number of shares authorized           1,100,000,000 550,000,000
Additional Paid-in Capital              
STOCKHOLDERS' DEFICIT              
Share issuances     $ 170.6 $ 252.8 $ 759.4    
Sales and Registration Agreement              
STOCKHOLDERS' DEFICIT              
Number of shares authorized 50,000,000            
Forward purchase agreement              
STOCKHOLDERS' DEFICIT              
Shares issued through at-the-market offering 30,000,000            
Forward purchase agreement | Additional Paid-in Capital              
STOCKHOLDERS' DEFICIT              
Share issuances   $ 108.7     $ 193.7 [1]    
[1] Includes $75.1 million of cash proceeds and $118.6 million carrying value of the debt exchanged for AMC Preferred Equity Units.