Quarterly report pursuant to Section 13 or 15(d)

EQUITY AND EARNINGS PER SHARE - Summary of Outstanding Options - Period End (Details)

v3.20.1
EQUITY AND EARNINGS PER SHARE - Summary of Outstanding Options - Period End (Details)
$ / shares in Units, $ in Millions
3 Months Ended
Mar. 31, 2020
USD ($)
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of unexercised options (in shares) 14,428,655
Options exercisable (in shares) 7,191,138
Issued to the independent directors  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of unexercised options (in shares) 7,000
Stock Options | Issued to the independent directors  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Date of grant Various
Number of unexercised options (in shares) 7,000
Options exercisable (in shares) 7,000
Weighted average exercise price (in dollars per share) | $ / shares $ 13.57
Intrinsic Value of Exercisable Options as of March 31, 2020 (millions) | $ $ 0.0
Stock Options | Manager | 2017  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Date of grant 2017
Number of unexercised options (in shares) 1,130,916
Options exercisable (in shares) 1,130,916
Weighted average exercise price (in dollars per share) | $ / shares $ 13.95
Intrinsic Value of Exercisable Options as of March 31, 2020 (millions) | $ $ 0.0
Stock Options | Manager | 2018  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Date of grant 2018
Number of unexercised options (in shares) 5,320,000
Options exercisable (in shares) 3,576,631
Weighted average exercise price (in dollars per share) | $ / shares $ 16.65
Intrinsic Value of Exercisable Options as of March 31, 2020 (millions) | $ $ 0.0
Stock Options | Manager | 2019  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Date of grant 2019
Number of unexercised options (in shares) 6,351,000
Options exercisable (in shares) 2,422,600
Weighted average exercise price (in dollars per share) | $ / shares $ 16.17
Intrinsic Value of Exercisable Options as of March 31, 2020 (millions) | $ $ 0.0
Stock Options | Manager | 2020  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Date of grant 2020
Number of unexercised options (in shares) 1,619,739
Options exercisable (in shares) 53,991
Weighted average exercise price (in dollars per share) | $ / shares $ 17.41
Intrinsic Value of Exercisable Options as of March 31, 2020 (millions) | $ $ 0.0
Options Granted In 2017  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of unexercised options (in shares) 1,130,916
Weighted average exercise price (in dollars per share) | $ / shares $ 13.95
Options Granted in 2018  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of unexercised options (in shares) 1,159,833
Options Granted In 2019  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of unexercised options (in shares) 1,270,200
Options Assigned  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of unexercised options (in shares) 3,560,949
Minimum | Options Granted in 2018  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Weighted average exercise price (in dollars per share) | $ / shares $ 16.54
Minimum | Options Granted In 2019  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Weighted average exercise price (in dollars per share) | $ / shares 15.13
Maximum | Options Granted in 2018  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Weighted average exercise price (in dollars per share) | $ / shares 18.01
Maximum | Options Granted In 2019  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Weighted average exercise price (in dollars per share) | $ / shares $ 16.67