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LOSS PER SHARE - Summary of Calculations of Basic and Diluted Loss per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Basic earnings per share [abstract]    
Net loss $ (54.3) $ (101.0)
Weighted average shares outstanding    
Basic (in shares) 370.2 367.5
Diluted (in shares) 370.2 367.5
Loss per share    
Basic (in dollars per share) $ (0.15) $ (0.27)
Diluted (in dollars per share) $ (0.15) $ (0.27)