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Stock Compensation Plans - Narrative (Details) - USD ($)
$ / shares in Units, 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]        
Stock-based compensation expense $ 11 $ 8 $ 16 $ 13
Unearned compensation cost related to the unvested portion of all stock-based awards $ 25   $ 25  
Remaining vesting period     through the first quarter of 2026  
Restricted Stock Units        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Equity instruments granted (shares)     1.1  
Weighted average fair value per share granted (dollars per share)     $ 11.25  
Performance Share Units        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Equity instruments granted (shares)     0.4  
Weighted average fair value per share granted (dollars per share)     $ 11.48