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Stock-Based Compensation - Narrative (Details) - USD ($)
shares in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Aggregate maximum of common shares (in shares) 20   20  
Common shares available for grant (in shares) 17   17  
Stock-based compensation expense $ 35 $ 30 $ 69 $ 65
Stock Options, SARs and ESPP        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation expense related to stock options, SAR and ESPP grants 6 8 12 17
Unrecognized compensation expense 22   $ 22  
Weighted average period over which unrecognized compensation expense will be recognized (in years)     10 months 24 days  
Restricted Stock And Restricted Stock Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized compensation expense 238   $ 238  
Weighted average period over which unrecognized compensation expense will be recognized (in years)     1 year 3 months 18 days  
Share-based compensation arrangement by restricted stock and restricted stock units compensation cost 27 20 $ 52 45
Performance Unit        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized compensation expense 12   $ 12  
Weighted average period over which unrecognized compensation expense will be recognized (in years)     1 year 8 months 12 days  
Performance period for performance units and shares (in years)     3 years  
Minimum performance multiple at the completion of the performance period (as a percent)     0.00%  
Maximum performance multiple at the completion of the performance period (as a percent)     200.00%  
Average return on capital employed (in years)     3 years  
Maximum performance multiple at the completion of the performance period if TSR is negative (as a percent)     100.00%  
Stock-based compensation expense $ 2 $ 2 $ 5 $ 3
Performance Unit | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Modifier applied to performance based multiple     (70.00%)  
Performance Unit | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Modifier applied to performance based multiple     70.00%