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OTHER NON-OPERATING LOSSES, NET (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
OTHER NON-OPERATING LOSSES, NET      
Loss from early debt redemption $ (124)   $ 4
Change of fair value of embedded derivative (6) $ 12  
Change of fair value of other derivatives (13) (120) (15)
Impairment loss of other financial assets (20)   (1)
Gains relating to past acquisitions and divestments 70    
Other (losses) / gains (4) 26 (30)
Other non-operating losses, net (97) $ (82) $ (42)
Net gain of indemnification from a past business acquisition 45    
Gain from sale of investment in subsidiaries $ 25