v3.25.2
EARNINGS (LOSS) PER SHARE - Schedule of Basic and Diluted Earnings (Loss) per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Numerator:        
Net income (loss) $ 22.0 $ (7.8) $ 40.4 $ (14.0)
Less: Undistributed income allocated to participating securities (1.1) 0.0 (2.0) 0.0
Net income (loss) attributable to common shareholders $ 20.9 $ (7.8) $ 38.4 $ (14.0)
Denominator:        
Weighted-average common shares outstanding: basic (both Class A and B) (in shares) 15.4 14.9 15.3 14.8
Effect of dilutive securities:        
Weighted-average common shares outstanding: diluted (both Class A and B) (in shares) 17.1 14.9 17.1 14.8
Earnings (loss) per common share (both Class A and B):        
Basic (in dollars per share) $ 1.36 $ (0.52) $ 2.51 $ (0.95)
Diluted (in dollars per share) $ 1.29 $ (0.52) $ 2.36 $ (0.95)
Redeemable convertible preferred stock        
Effect of dilutive securities:        
Redeemable convertible preferred stock (in shares) 0.8 0.0 0.8 0.0
Service-based restricted stock units        
Effect of dilutive securities:        
RSUs, MRSUs and Stock options (in shares) 0.5 0.0 0.6 0.0
Market-based restricted stock units        
Effect of dilutive securities:        
RSUs, MRSUs and Stock options (in shares) 0.3 0.0 0.3 0.0
Stock options        
Effect of dilutive securities:        
RSUs, MRSUs and Stock options (in shares) 0.1 0.0 0.1 0.0