Annual report pursuant to Section 13 and 15(d)

INCOME TAXES - Narrative (Details)

v3.20.4
INCOME TAXES - Narrative (Details) - USD ($)
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Tax Credit Carryforward [Line Items]        
Undistributed earnings of foreign subsidiaries indefinitely invested $ 247,800,000      
Deferred tax liability not recognized, amount of unrecognized deferred tax liability, undistributed earnings of foreign subsidiaries 23,300,000      
Tax Cuts and Jobs Act of 2017, transition tax for accumulated foreign earnings 0      
Research and development costs 33,000,000.0 $ 32,400,000    
Deferred tax asset related to net operating loss and capital loss and foreign tax credit carryforwards and research and development credit 339,800,000      
Deferred tax asset valuation allowance 382,700,000 379,800,000    
Cash paid (refund received) for income taxes 62,000,000.0 (2,500,000) $ 59,600,000  
Liability For unrecognized tax benefits 27,100,000 24,600,000    
Unrecognized tax benefits, interest and penalties 3,100,000 2,900,000    
Unrecognized tax benefits that would have affected the effective tax rate 26,200,000 23,800,000    
Unrecognized tax benefits that would impact effective tax rate, income tax penalties and interest accrued 2,800,000 2,600,000    
Income tax, penalties and interest accrued 1,000,000.0      
Unrecognized tax benefits 41,500,000 27,500,000    
Unrecognized tax benefit with no associated liability 17,500,000 5,800,000    
Net benefit effect if uncertain tax positions prevail 24,000,000.0 $ 21,700,000    
Tax Cuts and Jobs Act of 2017, reduction in net deferred tax liability       $ 85,100,000
Minimum        
Tax Credit Carryforward [Line Items]        
Decrease unrecognized tax benefits is reasonably possible 0      
Increase in unrecognized tax benefits is reasonably possible 0      
Maximum        
Tax Credit Carryforward [Line Items]        
Decrease unrecognized tax benefits is reasonably possible 6,800,000      
Increase in unrecognized tax benefits is reasonably possible 6,800,000      
Operating Loss and Capital Loss and Foreign Tax Credit Carryforwards and Research and Development Credit        
Tax Credit Carryforward [Line Items]        
Deferred tax asset valuation allowance 250,300,000      
State        
Tax Credit Carryforward [Line Items]        
Interest limitation carryover 3,300,000      
Foreign Country        
Tax Credit Carryforward [Line Items]        
Operating loss carryforwards 1,037,500,000      
Sate and Foreign        
Tax Credit Carryforward [Line Items]        
Research and development costs 33,000,000.0      
Domestic Tax Authority        
Tax Credit Carryforward [Line Items]        
Interest limitation carryover 355,100,000      
Expire At Various Times Between 2021 and 2039 | United States Federal        
Tax Credit Carryforward [Line Items]        
Operating loss carryforwards 11,500,000      
Expire At Various Times Between 2021 and 2039 | State        
Tax Credit Carryforward [Line Items]        
Operating loss carryforwards 240,100,000      
Expire At Various Times Between 2020 and 2039 | Foreign Country        
Tax Credit Carryforward [Line Items]        
Operating loss carryforwards 312,400,000      
Net Operating Loss Indefinite Life | Foreign Country        
Tax Credit Carryforward [Line Items]        
Operating loss carryforwards 725,100,000      
Capital Loss Indefinite Life | Foreign Country        
Tax Credit Carryforward [Line Items]        
Operating loss carryforwards 16,700,000      
Expire in Years 2025 through 2027 | Foreign Country        
Tax Credit Carryforward [Line Items]        
Tax credit carryforward $ 17,400,000