v3.23.1
STOCKHOLDERS' EQUITY - Equity statements (Details) - USD ($)
$ in Millions
 3 Months Ended
Feb. 07, 2023
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Increase (Decrease) in Stockholders' Equity        
Balance at the beginning of the period   $ (2,624.5) $ (1,789.5)  
Net loss   (235.5) (337.4)  
Other comprehensive loss   (7.3) (5.8)  
Increase in stockholders' deficit   70.5    
Taxes paid for restricted unit withholdings   (13.1) (52.2)  
Stock-based compensation   25.9 6.6  
Balance at the end of the period   (2,590.3) $ (2,178.3)  
Net proceeds from AMC Preferred Equity Units issuance   146.6    
Carrying value of corporate borrowings   4,740.6   $ 4,949.0
New Notes        
Increase (Decrease) in Stockholders' Equity        
Increase in stockholders' deficit $ 193.7      
Carrying value of corporate borrowings   118.6    
Forward purchase agreement        
Increase (Decrease) in Stockholders' Equity        
Increase in stockholders' deficit   $ 193.7    
Board of Directors        
Increase (Decrease) in Stockholders' Equity        
Shares awarded   85,552 41,650  
RSUs and PSUs vested   2,267,925 2,799,845  
Preferred Stock        
Increase (Decrease) in Stockholders' Equity        
Balance at the beginning of the period   $ 0.1 $ 0.1  
Balance at the end of the period   0.1 0.1  
Additional Paid-in Capital        
Increase (Decrease) in Stockholders' Equity        
Balance at the beginning of the period   5,045.1 4,857.4  
Increase in stockholders' deficit   70.5    
Taxes paid for restricted unit withholdings   (13.1) (52.2)  
Stock-based compensation   25.9 6.5  
Balance at the end of the period   5,322.1 4,811.7  
Additional Paid-in Capital | Forward purchase agreement        
Increase (Decrease) in Stockholders' Equity        
Increase in stockholders' deficit   193.7    
Accumulated Other Comprehensive Income (Loss)        
Increase (Decrease) in Stockholders' Equity        
Balance at the beginning of the period   (77.3) (28.1)  
Other comprehensive loss   (7.3) (5.8)  
Balance at the end of the period   (84.6) (33.9)  
Accumulated Earnings (Deficit)        
Increase (Decrease) in Stockholders' Equity        
Balance at the beginning of the period   (7,597.6) (6,624.0)  
Net loss   (235.5) (337.4)  
Balance at the end of the period   $ (7,833.1) (6,961.4)  
Class A common stock        
Increase (Decrease) in Stockholders' Equity        
Balance (in shares)   516,838,912    
Balance (in shares)   519,192,389    
Class A common stock | Common Stock        
Increase (Decrease) in Stockholders' Equity        
Balance at the beginning of the period   $ 5.2 $ 5.1  
Balance (in shares)   516,838,912 513,979,100  
Stock-based compensation     $ 0.1  
Stock-based compensation (in shares)   2,353,477 2,841,495  
Balance at the end of the period   $ 5.2 $ 5.2  
Balance (in shares)   519,192,389 516,820,595  
Series A Convertible Participating Preferred Stock | Preferred Stock        
Increase (Decrease) in Stockholders' Equity        
Balance (in shares)   7,245,872 5,139,791  
Number of stock issued (In shares)   492,880    
Stock-based compensation (in shares)   26,944 28,415  
Balance (in shares)   9,741,909 5,168,206  
Series A Convertible Participating Preferred Stock | Preferred Stock | Forward purchase agreement        
Increase (Decrease) in Stockholders' Equity        
Number of stock issued (In shares)   1,976,213    
AMC Preferred Stock Depository Shares | Preferred Stock        
Increase (Decrease) in Stockholders' Equity        
Balance (in shares)   724,587,058 513,979,100  
Number of stock issued (In shares)   49,287,989    
Stock-based compensation (in shares)   2,694,450 2,841,495  
Balance (in shares)   974,190,794 516,820,595  
AMC Preferred Stock Depository Shares | Preferred Stock | Forward purchase agreement        
Increase (Decrease) in Stockholders' Equity        
Number of stock issued (In shares)   197,621,297    
AMC Preferred Equity Units        
Increase (Decrease) in Stockholders' Equity        
Net proceeds from AMC Preferred Equity Units issuance $ 75.1 $ 75.1    
AMC Preferred Equity Units | New Notes        
Increase (Decrease) in Stockholders' Equity        
Number of stock issued (In shares) 197,621,297      
AMC Preferred Equity Units | Board of Directors        
Increase (Decrease) in Stockholders' Equity        
Shares awarded   153,696 41,650  
RSUs and PSUs vested   2,540,754 2,799,845