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Net Loss Per Share - Basic and Diluted Loss per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Earnings Per Share [Abstract]      
Net loss $ (282.5) $ (191.0) $ (119.3)
Weighted average common shares outstanding - basic (in shares) 53.2 50.0 39.5
Weighted average common shares outstanding - diluted (in shares) 53.2 50.0 39.5
Net loss per common share - basic (in usd per share) $ (5.31) $ (3.82) $ (3.02)
Net loss per common share - diluted (in usd per share) $ (5.31) $ (3.82) $ (3.02)