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FINANCIAL INSTRUMENTS (Income Statement) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Derivative [Line Items]        
Other income (expense), net $ 13 $ 3 $ (3) $ 12
Other Nonoperating Income (Expense)        
Derivative [Line Items]        
Hedged items (Long-term debt) 1 (40) (68) (56)
Other Nonoperating Income (Expense) | Fair Value Hedging        
Derivative [Line Items]        
Derivatives designated as hedging instruments $ (1) $ 40 $ 68 $ 56