v3.26.1
Net Income Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
Numerator:                
Net income $ 60 $ 14 $ 255 $ 298 $ 74 $ 553    
Denominator:                
Shares outstanding at the beginning of the period (in shares)   51,100   53,600     50,900 55,000
Weighted-average number of shares issued:                
Stock-based compensation (in shares) 0   0   100 200    
Stock purchases (in shares) 0   0   0 (1,100)    
Denominator for basic net income per share (in shares) 51,100   53,600   51,000 54,100    
Effect of dilutive securities:                
Stock-based compensation (in shares) 200   100   200 200    
Denominator for diluted net income per share (in shares) 51,300   53,700   51,200 54,300    
Net income per share:                
Net income per share - Basic (in dollars per share) $ 1.19   $ 4.75   $ 1.46 $ 10.23    
Net income per share - Diluted (in dollars per share) $ 1.19   $ 4.75   $ 1.46 $ 10.19    
Potentially dilutive common shares (in shares) 318   133   341 0