Annual report pursuant to Section 13 and 15(d)

LEGAL PROCEEDINGS AND CONTINGENCIES LEGAL PROCEEDINGS AND CONTINGENCIES (Details)

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LEGAL PROCEEDINGS AND CONTINGENCIES LEGAL PROCEEDINGS AND CONTINGENCIES (Details)
€ in Millions, $ in Millions
1 Months Ended
Mar. 08, 2018
EUR (€)
May 25, 2017
USD ($)
Apr. 30, 2018
Defendants
Aug. 31, 2016
Defendants
Dec. 31, 2018
USD ($)
U.S. District Court for the Southern District of New York          
Loss Contingencies [Line Items]          
Litigation settlement amount   $ 9.4      
Litigation Settlement Interest   $ 237.6      
Loss Contingency Accrual         $ 9.4
Loss Contingency, Estimate of Possible Loss         $ 247.0
CNMC          
Loss Contingencies [Line Items]          
Litigation settlement amount | € € 19.2        
Loss Contingency, Number of Defendants | Defendants       10  
Turkish Competition Authority          
Loss Contingencies [Line Items]          
Loss Contingency, Number of Defendants | Defendants     30