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COMMITMENTS AND CONTINGENCIES (Details) - USD ($)
9 Months Ended 12 Months Ended
Sep. 30, 2019
Dec. 31, 2013
Loss Contingencies [Line Items]    
Worthless stock deduction   $ 546,000,000.0
Swedish Tax Agency    
Loss Contingencies [Line Items]    
Possible tax expense $ 41,000,000.0  
Tax Year 2012 | IRS    
Loss Contingencies [Line Items]    
Liability (refund) from income tax examination (4,700,000)  
Tax Year 2013 | IRS    
Loss Contingencies [Line Items]    
Liability (refund) from income tax examination 0  
Tax Year 2014 | IRS    
Loss Contingencies [Line Items]    
Income tax penalties $ 17,100,000