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Stock-Based Compensation - Additional Information (Details)
shares in Millions, $ in Millions
12 Months Ended
Dec. 31, 2024
USD ($)
program
shares
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
performance_criteria
Stock-Based Compensation        
Compensation cost that has been charged against income $ 24 $ 17 $ 16  
Total income tax benefit recognized 6 3 2  
Total unrecognized compensation cost related to nonvested share-based compensation arrangements granted $ 38      
Expected weighted-average period of recognition of unrecognized compensation cost 2 years      
Total fair value of shares vested $ 24 24 25  
Performance Share Awards        
Performance period 3 years      
Number of unrelated performance element criteria | program 3      
Number of performance element criteria | performance_criteria       2
Minimum        
Performance Share Awards        
Exact number of shares issued as a percentage of the target award 0.00%     0.00%
Maximum        
Performance Share Awards        
Exact number of shares issued as a percentage of the target award 200.00%     200.00%
Restricted Stock Units        
Stock-Based Compensation        
Share-based liabilities paid $ 8 6 3  
Cash flow effect, cash used to settle awards $ 2 $ 3 $ 3  
Restricted Stock Units, Stock Grants and Stock Units        
Vesting period 4 years      
Percentage of cash that the participant may elect as a dividend for the first option available under the plan       50.00%
Percentage of stock that the participant may elect as dividend under second option of plan       50.00%
Officers and Key Employees | Restricted Stock Units        
Restricted Stock Units, Stock Grants and Stock Units        
Percentage of fully transferable shares of stock that the participant may elect as a deferral for the first option available under the plan       100.00%
Percentage of fully transferable shares of stock in that participant may receive cash       100.00%
Non-Officer Board of Director Member | Restricted Stock Units        
Restricted Stock Units, Stock Grants and Stock Units        
Percentage of fully transferable shares of stock that the participant may elect as a deferral for the first option available under the plan     100.00%  
Percentage of cash that the participant may elect as a dividend for the first option available under the plan     100.00%  
Percentage of stock that the participant may elect as dividend under second option of plan     50.00%  
Percentage of fully transferable shares of stock that the participant may elect as a dividend equivalent deferral for the first option available under the plan     50.00%  
2021 Plan        
Stock-Based Compensation        
Common shares available for grant (in shares) | shares 4.3      
Common shares available for issuance (in shares) | shares 2.9