v3.22.4
Preferred and Common Stock - Activity for Stock Options and Stock Units (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 9 Months Ended 12 Months Ended 21 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Sep. 30, 2022
Number of options            
Outstanding, beginning of period (in shares)     590,906      
Granted (in shares)     0      
Exercised (in shares)   (84,959) (147,418) (251,919)    
Expired or forfeited (in shares)     (29,896)      
Outstanding, end of period (in shares) 590,906   413,592 590,906    
Weighted average exercise price            
Outstanding, beginning of period (in dollars per share)     $ 25.56      
Granted (in dollars per share)     0      
Exercised (in dollars per share)     20.61      
Expired or forfeited (in dollars per share)     32.25      
Outstanding, end of period (in dollars per share) $ 25.56   $ 26.84 $ 25.56    
Weighted average FMV per unit            
Share-Based Compensation Arrangement By Share-Based Payment Award, Percentage of Target 8.30%         100.00%
Cash received from stock option exercises   $ 1 $ 3 $ 6    
Total intrinsic value of stock options exercised   $ 1 $ 1 $ 2    
2022 Performance Stock Unit Awards            
Weighted average FMV per unit            
Share-Based Compensation Arrangement By Share-Based Payment Award, Percentage of Target     15.90%      
2021 Performance Stock Unit Awards            
Weighted average FMV per unit            
Share-Based Compensation Arrangement By Share-Based Payment Award, Percentage of Target     27.20%      
2020 Performance Stock Unit Awards            
Weighted average FMV per unit            
Share-Based Compensation Arrangement By Share-Based Payment Award, Percentage of Target     7.90%      
Stock units            
Number of units            
Outstanding, beginning of period (in shares)     3,913,337      
Granted (in shares)     1,227,768      
Converted (in shares)   (157,230) (1,314,188) (1,125,983)    
Expired or forfeited (in shares)     (194,074)      
Performance share adjustment (in shares)     (307,673)      
Outstanding, end of period (in shares) 3,913,337   3,325,170 3,913,337    
Weighted average FMV per unit            
Outstanding, beginning of period (in dollars per share)     $ 15.14      
Granted (in dollars per share)     25.73      
Converted (in dollars per share)     9.67      
Expired or forfeited (in dollars per share)     22.18      
Performance share adjustment (in dollars per share)     30.84      
Outstanding, end of period (in dollars per share) $ 15.14   $ 19.35 $ 15.14    
Shares withheld to meet statutory tax withholding requirements   420,790        
EBITDA Target            
Weighted average FMV per unit            
Performance target percentage     50.00%   25.00%  
Performance Shares, Return on Invested Capital Target            
Weighted average FMV per unit            
Performance target percentage     25.00%      
Performance Shares, Total Shareholder Return Target            
Weighted average FMV per unit            
Performance target percentage     25.00%      
Performance stock units            
Weighted average FMV per unit            
Performance measurement period     3 years   3 years  
Stock units with market condition            
Weighted average FMV per unit            
Outstanding, beginning of period (in dollars per share)     $ 46.17 10.02   $ 10.02
Outstanding, end of period (in dollars per share) $ 46.17 $ 10.02 $ 37.40 $ 46.17 $ 10.02  
Estimated volatility rate     60.40% 50.10% 35.40%