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Net Loss Per Share - Schedule of Basic and Diluted Loss per Common Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Earnings Per Share [Abstract]      
Net loss $ (80.8) $ (198.9) $ (367.3)
Weighted average common shares outstanding - basic (in shares) 70.9 71.9 55.5
Weighted-average common shares outstanding - diluted (in shares) 70.9 71.9 55.5
Net loss per common share - basic (in usd per share) $ (1.14) $ (2.77) $ (6.62)
Net loss per common share - diluted (in dollars per share) $ (1.14) $ (2.77) $ (6.62)