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FINANCIAL INSTRUMENTS (Income Statement) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Derivative [Line Items]      
Other income (expense), net $ 20 $ (8) $ 16
Other Nonoperating Income (Expense)      
Derivative [Line Items]      
Hedged items (Long-term debt) (65) 4 1
Other Nonoperating Income (Expense) | Fair Value Hedging      
Derivative [Line Items]      
Derivatives designated as hedging instruments $ 65 $ (4) $ (1)