v3.19.3.a.u2
INCOME TAXES - Effective income tax rate on earnings (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 01, 2017
Dec. 31, 2019
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Reconciliation of effective tax rate on earnings (loss) from continuing operations before income taxes and the U.S. federal income tax statutory rate          
Income tax expense at the federal statutory rate     $ (36.0) $ 26.0 $ (116.6)
Effect of:          
State income taxes     (7.2) 8.9 (17.6)
Increase (decrease) in reserve for uncertain tax positions     8.4 5.2 2.1
Federal and state credits     (6.5) (5.9) (5.2)
Permanent items - transaction costs         2.0
Permanent items - other     (6.6) 5.7 (9.4)
Foreign rate differential     11.8 (5.9) (15.3)
Change in legislation         88.6
Other items     (10.6) 9.7 4.9
Valuation allowance $ 432.0   $ 24.2 $ (30.1) $ 220.6
Effective income tax rate (as a percent)     13.10% 11.00% (46.30%)
Gross decreases-tax position in prior periods     $ 1.5 $ 0.6  
Income tax provision (benefit)     $ 22.5 (13.6) $ (154.1)
Federal          
Effect of:          
Valuation allowance $ (210.4)        
Foreign          
Effect of:          
Valuation allowance       $ (1.0)  
Spain          
Effect of:          
Income tax provision (benefit)   $ (41.5)