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(LOSS) EARNINGS PER SHARE (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Basic (loss) and Diluted earnings per share numerator:        
Net (loss) income $ (184.5) $ 105.5 $ (74.9) $ 242.7
Net income allocated to participating securities   (0.3)   (0.7)
Net (loss) income allocated to common stockholders $ (184.5) $ 105.2 $ (74.9) $ 242.0
Basic (loss) earnings per share denominator:        
Weighted average shares outstanding (in shares) 106.3 106.8 106.5 107.1
Basic (loss) earnings per share (in dollars per share) $ (1.74) $ 0.99 $ (0.70) $ 2.26
Diluted earnings per share denominator:        
Weighted average shares outstanding (in shares) 106.3 106.8 106.5 107.1
Dilutive potential common shares outstanding (in shares)   0.1   0.2
Total dilutive weighted average shares (in shares) 106.3 106.9 106.5 107.3
Diluted (loss) earnings per share (in dollars per share) $ (1.74) $ 0.98 $ (0.70) $ 2.26
Stock based compensation        
Diluted earnings per share denominator:        
Anti-dilutive shares excluded from the computation of diluted loss per share (in shares) 0.1 0.0 0.2 0.0