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LOSS PER SHARE - Computations of Basic and Diluted Earnings Per Share (Detail) - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Earnings Per Share Disclosure [Line Items]      
Net loss $ (271.2) $ (422.8) $ (616.8)
(Earnings) loss allocated to participating share-based awards [1] (3.8) 6.1 4.3
Net income (loss) attributable to common stockholders $ (267.4) $ (416.7) $ (612.5)
Basic weighted average shares outstanding 118,200,000 117,300,000 116,700,000
Common equivalent shares for restricted stock units [2] 0 0 0
Common equivalent shares for convertible notes and warrants [3] 0 0 0
Diluted weighted average shares outstanding 118,200,000 117,300,000 116,700,000
Basic $ (2.26) $ (3.55) $ (5.25)
Diluted $ (2.26) $ (3.55) $ (5.25)
Restricted Stock Units (RSUs)      
Earnings Per Share Disclosure [Line Items]      
Common equivalent shares for restricted stock units 400,000 0 700,000
[1] For the years ended December 31, 2020, 2021 and 2022, a weighted average of approximately 0.8 shares, 1.7 shares and 1.7 shares of unvested restricted stock, respectively, are considered participating securities.
[2] For the years ended December 31, 2020, 2021 and 2022, approximately 0.7, 0 and 0.4 common equivalent shares for restricted stock units were excluded because they were anti-dilutive.
[3] For the years ended December 31, 2020, 2021 and 2022, diluted loss per share excludes the conversion of the 4.50% Convertible Senior Notes into 32.0 shares of common stock, as well as outstanding warrants, as they would be anti-dilutive. See further discussion below.