Annual report pursuant to Section 13 and 15(d)

INCOME TAXES (Narrative) (Details)

v3.10.0.1
INCOME TAXES (Narrative) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Income Tax Contingency [Line Items]        
Deferred Tax Assets, Operating Loss Carryforwards, Domestic $ 3,600.0      
Income Tax Expense (Benefit) (475.2) $ (252.4) $ (12.2)  
Unrecognized Tax Benefits 29.0 33.5 $ 30.7 $ 156.2
Undistributed Earnings of Foreign Subsidiaries 0.0 0.0    
Deferred Tax Assets, Operating Loss Carryforwards, State and Local 38.3 4,200.0    
Deferred Tax Assets, Operating Loss Carryforwards, Foreign $ 6,600.0 7,200.0    
Document Fiscal Year Focus 2018      
Cumulative Loss Position, Period 3 years      
Deferred Tax Assets, Tax Credit Carryforwards, Foreign   $ 5.8    
Valuation Allowance, Deferred Tax Asset, Change in Amount $ 695.8      
Estimated Taxable Income to Fully Utilize Deferred Tax Assets $ 109.0      
Effective Income Tax Rate, Continuing Operations (84.10%) (233.30%) (11.10%)  
Deferred Tax Liabilities, Intercompany Notes $ (465.7) $ (465.7)    
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount $ 0.0 407.5 $ 149.1  
Tax Cuts And Jobs Act, Change In Tax Rate, Deferred Tax Asset, Income Tax Expense   $ 334.1    
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent 0.00% 441.70% (36.80%)  
United States [Member]        
Income Tax Contingency [Line Items]        
Valuation Allowance, Deferred Tax Asset, Change in Amount $ 500.0      
LUXEMBOURG        
Income Tax Contingency [Line Items]        
Valuation Allowance, Deferred Tax Asset, Change in Amount 1,200.0      
Deferred Tax Liabilities, Intercompany Notes 161.7      
Tax law change, remeasurement, amount   $ 73.4    
Other Noncurrent Assets [Member]        
Income Tax Contingency [Line Items]        
Unrecognized Tax Benefits 24.8 27.4    
Other Liabilities [Member]        
Income Tax Contingency [Line Items]        
Unrecognized Tax Benefits 4.2 6.1    
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued $ 2.7 $ 2.1    
Minimum [Member]        
Income Tax Contingency [Line Items]        
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent 0.00%      
Maximum [Member]        
Income Tax Contingency [Line Items]        
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent 29.22%