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Stock-Based Compensation - Narrative (Details) - USD ($)
$ in Millions
1 Months Ended 9 Months Ended
Feb. 28, 2025
Sep. 30, 2025
Stock options    
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Award expiration period (in years)   10 years
Award vesting period (in years)   3 years
Unrecognized compensation expense   $ 16
Recognized weighted-average period (in years)   1 year
Retention awards    
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Award vesting period (in years)   4 years
Unrecognized compensation expense   $ 68
Recognized weighted-average period (in years)   1 year
Performance stock unit awards    
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Unrecognized compensation expense   $ 18
Recognized weighted-average period (in years)   1 year 6 months
Share-based payment award, award requisite service period (in months) 37 months  
Performance period (in years) 3 years  
Performance stock unit awards | Share-Based Payment Arrangement, Tranche One    
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Award vesting rights (percent) 66.67%  
Performance stock unit awards | Share-Based Payment Arrangement, Tranche Two    
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Award vesting rights (percent) 33.33%