v3.20.4
EARNINGS (LOSS) PER SHARE (Details)
 3 Months Ended 12 Months Ended
Dec. 31, 2020
USD ($)
$ / shares
shares
Sep. 30, 2020
USD ($)
shares
Jun. 30, 2020
USD ($)
shares
Mar. 31, 2020
USD ($)
shares
Dec. 31, 2019
USD ($)
shares
Sep. 30, 2019
USD ($)
shares
Jun. 30, 2019
USD ($)
shares
Mar. 31, 2019
USD ($)
shares
Dec. 31, 2020
USD ($)
item
$ / shares
shares
Dec. 31, 2019
USD ($)
$ / shares
shares
Dec. 31, 2018
USD ($)
$ / shares
shares
Sep. 14, 2020
$ / shares
Sep. 13, 2020
$ / shares
Sep. 14, 2018
$ / shares
Numerator:                            
Net earnings (loss) attributable to AMC Entertainment Holdings, Inc. for basic earnings (loss) per share $ (945,800,000) $ (905,800,000) $ (561,200,000) $ (2,176,300,000) $ (13,500,000) $ (54,800,000) $ 49,400,000 $ (130,200,000) $ (4,589,100,000) $ (149,100,000) $ 110,100,000      
Calculation of net earnings for diluted earnings (loss) per share:                            
Marked-to--market (gain) on derivative liability                   (5,800,000) (66,400,000)      
Interest expense for Convertible Notes due 2026                     9,700,000      
Net earnings (loss) available for diluted earnings                 $ (4,589,100,000) $ (149,100,000) $ 53,400,000      
Denominator (shares in thousands):                            
Weighted average shares for basic earnings per common share | shares 152,307,000 107,695,000 104,319,000 104,245,000 103,850,000 103,850,000 103,845,000 103,783,000 117,212,000 103,832,000 120,621,000      
Common equivalent shares for RSUs and PSUs | shares                     29,000      
Common equivalent shares if-converted: convertible notes 2026 | shares                     9,455,000      
Weighted average shares for diluted earnings per common share | shares 152,307,000 107,695,000 104,319,000 104,245,000 103,850,000 103,850,000 135,528,000 103,783,000 117,212,000 103,832,000 130,105,000      
Basic earnings (loss) per common share (in dollars per share) | $ / shares                 $ (39.15) $ (1.44) $ 0.91      
Diluted earnings (loss) per common share (in dollars per share) | $ / shares                 $ (39.15) $ (1.44) $ 0.41      
(Gain) loss on derivative asset and derivative liability                 $ (109,000,000.0) $ 5,800,000 $ 111,400,000      
2.95% Senior Secured Convertible Notes due 2024                            
Calculation of net earnings for diluted earnings (loss) per share:                            
Interest expense for Convertible Notes due 2026                     $ 9,700,000      
Denominator (shares in thousands):                            
Anti-dilutive securities not included in the computations of diluted earnings per share (in shares) | shares                 35,500,000 31,700,000 9,500,000      
Interest expense not eliminated from net loss in EPS calculation due to anti-dilutive effect                 $ 31,800,000 $ 32,600,000        
Derivative other expense/income not eliminated from net loss in EPS calculation due to anti-dilutive effect                 $ 89,400,000 $ (23,500,000)        
Conversion rate (in dollars per share) | $ / shares                       $ 13.51 $ 18.95  
(Gain) loss on derivative asset and derivative liability                     $ (66,400,000)      
Number of shares upon conversion | item                 44,422,860          
2.95% Senior Secured Convertible Notes due 2024 | Class A common stock                            
Denominator (shares in thousands):                            
Conversion rate (in dollars per share) | $ / shares $ 13.51               $ 13.51     $ 6.55   $ 18.95
Number of shares upon conversion                 44,422,860          
Performance Vesting                            
Denominator (shares in thousands):                            
Anti-dilutive securities not included in the computations of diluted earnings per share (in shares) | shares                 649,209 477,630 364,269      
Special Performance Stock Unit                            
Denominator (shares in thousands):                            
Anti-dilutive securities not included in the computations of diluted earnings per share (in shares) | shares                 578,328          
Restricted stock unit                            
Denominator (shares in thousands):                            
Anti-dilutive securities not included in the computations of diluted earnings per share (in shares) | shares                 1,131,333 1,377,992 210,558