v3.20.4
INCOME TAXES - narrative (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Sep. 30, 2019
Dec. 31, 2020
Sep. 30, 2020
Mar. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Jul. 31, 2020
INCOME TAXES                
Income tax provision (benefit)         $ 59.9 $ (22.5) $ 13.6  
Effective Income Tax Rate Reconciliation, Percent         (1.30%) 13.10% 11.00%  
Goodwill, Impairment Loss $ 0.0 $ 405.3 $ 156.8 $ 1,744.3 $ 2,306.4      
Net deferred tax liabilities   $ 40.2     40.2      
Net deferred tax assets           $ 24.1    
Estimated cancellation of debt income (CODI) recognized               $ 1,200.0
Estimated net operating loss from cancellation of debt income         $ 1,200.0      
Foreign | Federal Ministry of Finance, Germany                
INCOME TAXES                
Income tax provision (benefit)       33.1        
Foreign | Tax Authority Spain                
INCOME TAXES                
Income tax provision (benefit)       $ 40.1