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Stock Based Compensation and Other Incentive Compensation - Performance Shares Activity (Details) - Performance Shares [Member] - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]        
Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount $ 5.4      
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition 2 years      
Total Shareholder Return (TSR) Awards [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]        
Beginning balance 0.0 0.3 0.6  
Performance shares granted 0.0 0.0 0.0  
Performance shares vested 0.0 (0.3) (0.3)  
Performance shares canceled 0.0 0.0 0.0  
Ending balance 0.0 0.0 0.3  
Weighted-average grant date fair value outstanding $ 0 $ 0 $ 24.36 $ 18.86
Weighted-average grant date fair value granted 0 0 0  
Weighted-average grant date fair value vested 0 24.36 13.91  
Weighted-average grant date fair value canceled $ 0 $ 0 $ 0  
Free Cash Flow (FCF) Awards [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]        
Beginning balance 1.6 1.2 1.2  
Performance shares granted 0.6 0.5 0.4  
Performance shares vested (0.9) 0.0 (0.3)  
Performance shares canceled (0.1) (0.1) (0.1)  
Ending balance 1.2 1.6 1.2  
Weighted-average grant date fair value outstanding $ 9.80 $ 7.81 $ 6.96 $ 7.50
Weighted-average grant date fair value granted 9.19 9.83 11.26  
Weighted-average grant date fair value vested 5.93 0 14.28  
Weighted-average grant date fair value canceled $ 10.20 $ 9.26 $ 6.96