Annual report pursuant to Section 13 and 15(d)

INCOME TAXES - Narrative (Details)

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INCOME TAXES - Narrative (Details) - USD ($)
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Tax Credit Carryforward [Line Items]      
Undistributed earnings of foreign subsidiaries indefinitely invested $ 262,200,000    
Deferred tax liability not recognized, amount of unrecognized deferred tax liability, undistributed earnings of foreign subsidiaries 30,100,000    
Tax Cuts and Jobs Act of 2017, transition tax for accumulated foreign earnings 0    
Research and development costs 32,400,000 $ 26,700,000  
Deferred tax asset related to net operating loss and capital loss and foreign tax credit carryforwards and research and development credit 341,100,000    
Deferred tax asset valuation allowance 379,800,000 428,300,000  
Cash paid (refund received) for income taxes (2,500,000) 59,600,000 $ 215,700,000
Liability For unrecognized tax benefits 24,600,000 24,900,000  
Unrecognized tax benefits, interest and penalties 2,900,000 2,600,000  
Unrecognized tax benefits that would have affected the effective tax rate 23,800,000 23,800,000  
Unrecognized tax benefits that would impact effective tax rate, income tax penalties and interest accrued 2,600,000 2,300,000  
Income tax, penalties and interest accrued 1,000,000.0 900,000  
Unrecognized tax benefits 27,500,000 25,900,000  
Unrecognized tax benefit with no associated liability 5,800,000 3,600,000  
Net benefit effect if uncertain tax positions prevail 21,700,000 22,300,000  
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 5,000,000.0    
Increase in unrecognized tax benefits is reasonably possible 5,000,000.0    
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 259,600,000    
State      
Tax Credit Carryforward [Line Items]      
Interest limitation carryover 216,200,000    
Foreign Country      
Tax Credit Carryforward [Line Items]      
Operating loss carryforwards 1,062,800,000    
Domestic Tax Authority      
Tax Credit Carryforward [Line Items]      
Interest limitation carryover 23,100,000    
Sate and Foreign      
Tax Credit Carryforward [Line Items]      
Research and development costs 37,200,000    
Expire At Various Times Between 2021 and 2039 | United States Federal      
Tax Credit Carryforward [Line Items]      
Operating loss carryforwards 12,600,000    
Expire At Various Times Between 2021 and 2039 | State      
Tax Credit Carryforward [Line Items]      
Operating loss carryforwards 159,800,000    
Expire At Various Times Between 2020 and 2039 | Foreign Country      
Tax Credit Carryforward [Line Items]      
Operating loss carryforwards 333,600,000    
Net Operating Loss Indefinite Life | Foreign Country      
Tax Credit Carryforward [Line Items]      
Operating loss carryforwards 729,200,000    
Capital Loss Indefinite Life | Foreign Country      
Tax Credit Carryforward [Line Items]      
Operating loss carryforwards 16,200,000    
Expire in Years 2025 through 2027 | Foreign Country      
Tax Credit Carryforward [Line Items]      
Tax credit carryforward $ 16,600,000