v3.26.1
Stock Compensation Plans (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Stock-based compensation expense $ 4 $ 5 $ 12 $ 11
Unearned compensation cost related to the unvested portion of all stock-based awards $ 27   $ 27  
Restricted Stock Units        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Equity instruments granted (shares)     2.1  
Weighted average fair value per share granted (in dollars per share)     $ 8.45  
Performance Share Units        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Equity instruments granted (shares)     0.7  
Weighted average fair value per share granted (in dollars per share)     $ 8.30