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Stock Compensation Plans - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
RSUs | Cliff      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 3 years    
Performance-Based RSUs      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted-average fair value of awards granted (in dollars per share) $ 80.28 $ 79.93 $ 77.91
Total fair value of awards that vested $ 12 $ 21 $ 18
Total unrecognized stock compensation expense $ 16    
Weighted average period to recognize unrecognized compensation cost 1 year 1 month 17 days    
Performance-Based RSUs | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of target award available for grant 0.00%    
Performance-Based RSUs | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of target award available for grant 200.00%    
Performance-Based RSUs | Cliff      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 3 years    
Time-Based RSUs      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted-average fair value of awards granted (in dollars per share) $ 76.44 $ 73.13 $ 78.15
Total fair value of awards that vested $ 25 $ 39 $ 30
Total unrecognized stock compensation expense $ 34    
Weighted average period to recognize unrecognized compensation cost 1 year 9 months 14 days    
2021 Stock Incentive Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares outstanding other than RSUs (in shares) 0 0 0
Common stock, shares authorized (in shares) 17,000,000    
Shares available (in shares) 4,000,000