Annual report pursuant to Section 13 and 15(d)

EQUITY AND EARNINGS PER SHARE - Outstanding Options by Recipient (Details)

v3.20.4
EQUITY AND EARNINGS PER SHARE - Outstanding Options by Recipient (Details) - USD ($)
$ / shares in Units, $ in Millions
Dec. 31, 2020
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of unexercised options (in shares) 14,428,655  
Options exercisable (in shares) 10,740,896  
Director    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of unexercised options (in shares) 7,000 7,000
Stock Options | Director    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of unexercised options (in shares) 7,000  
Options exercisable (in shares) 7,000  
Weighted average exercise price (in dollars per share) $ 13.57  
Intrinsic value of exercisable options $ 0.0  
Stock Options | Manager | 2017    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of unexercised options (in shares) 1,130,916  
Options exercisable (in shares) 1,130,916  
Weighted average exercise price (in dollars per share) $ 13.95  
Intrinsic value of exercisable options $ 0.0  
Stock Options | Manager | 2018    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of unexercised options (in shares) 5,320,000  
Options exercisable (in shares) 4,735,167  
Weighted average exercise price (in dollars per share) $ 16.67  
Intrinsic value of exercisable options $ 0.0  
Stock Options | Manager | 2019    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of unexercised options (in shares) 6,351,000  
Options exercisable (in shares) 4,327,900  
Weighted average exercise price (in dollars per share) $ 16.13  
Intrinsic value of exercisable options $ 0.0  
Stock Options | Manager | 2020    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of unexercised options (in shares) 1,619,739  
Options exercisable (in shares) 539,913  
Weighted average exercise price (in dollars per share) $ 17.41  
Intrinsic value of exercisable options $ 0.0