Annual report pursuant to Section 13 and 15(d)

STOCK COMPENSATION PLANS - Stock Options (Details)

v3.22.4
STOCK COMPENSATION PLANS - Stock Options (Details) - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Mar. 13, 2020
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]        
Outstanding at beginning of year (in shares)   1,000,000.0 2,500,000 600,000
Outstanding at beginning of year, weighted average exercise price (in dollars per share)   $ 12.75 $ 11.60 $ 10.42
Exercised (in shares)   (300,000) (1,500,000) (100,000)
Exercised, weighted average exercise price (in dollars per share)   $ 16.55 $ 10.36 $ 7.01
Forfeited/canceled (in shares)   (100,000) 0 0
Forfeitured/canceled, weighted average exercise price (in dollars per share)   $ 22.78 $ 36.48 $ 41.04
Outstanding at end of year (in shares)   600,000 1,000,000.0 2,500,000
Outstanding at end of year, weighted average exercise price (in dollars per share)   $ 10.39 $ 12.75 $ 11.60
Exercisable (in shares)   600,000 900,000 2,200,000
Exercisable, weighted average exercise price (in dollars per share)   $ 10.52 $ 13.35 $ 11.86
Intrinsic value of options exercised   $ 3 $ 13  
Weighted-average remaining contractual life of options outstanding   2 years 7 months 6 days    
Aggregate intrinsic value of options outstanding   $ 4    
Weighted-average remaining contractual life of options exerciseable   2 years 4 months 24 days    
Aggregate intrinsic value of options exerciseable   $ 4    
Options | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]        
Performance/vesting period   1 year    
Expiration period   10 years    
Options | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]        
Performance/vesting period   3 years    
AK Steel        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]        
Granted (in shares) 2,000,000 0 0 2,000,000.0
Granted, weighted average exercise price (in dollars per share) $ 0.51 $ 0 $ 0 $ 11.86