v3.26.1
Loss per share and shareholders’ equity - Schedule of Basic and Diluted Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Numerator:    
Net loss $ (118) $ (87)
Net loss attributable to noncontrolling interests 2 0
Net loss attributable to the Company $ (116) $ (87)
Denominator:    
Basic weighted-average number of shares outstanding (in shares) 553.2 553.1
Dilutive effect of share-based awards (in shares) 0.0 0.0
Diluted weighted-average number of shares outstanding (in shares) 553.2 553.1
Loss per share    
Basic (in dollars per share) $ (0.21) $ (0.16)
Diluted (in dollars per share) $ (0.21) $ (0.16)