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FINANCIAL INSTRUMENTS (Narrative) (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2018
Dec. 31, 2017
Derivative [Line Items]    
Accumulated other comprehensive loss $ (58) $ (48)
Cash Flow Hedging [Member]    
Derivative [Line Items]    
Accumulated other comprehensive loss 8 $ 9
Net amount of deferred gains and losses on cash flow hedges that is expected to be reclassified within the next 12 months $ 3  
Fair Value Hedging [Member] | One-Month LIBOR [Member] | Minimum [Member]    
Derivative [Line Items]    
Floating rate 2.20%  
Fair Value Hedging [Member] | One-Month LIBOR [Member] | Maximum [Member]    
Derivative [Line Items]    
Floating rate 3.00%