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INVENTORIES (Details) - USD ($)
$ in Millions
Dec. 31, 2017
Dec. 31, 2016
Inventories    
Total inventories $ 72 $ 125
Gross carrying amount    
Inventories    
Telephone handsets and accessories for sale 65 117
SIM-Cards 16 16
Other inventory 16 18
Accumulated impairment    
Inventories    
Total inventories $ (25) $ (26)