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FINANCIAL INSTRUMENTS AND FAIR VALUE MEASURES 2 (Details) - USD ($)
$ in Millions
Jun. 30, 2020
Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term Debt $ 18,558 $ 12,486
Carrying Value [Member] | Significant Observable Inputs (Level 2)    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term receivables 148 129
Long-term debt and related current maturities 18,558 12,486
Estimated Fair Value [Member] | Significant Observable Inputs (Level 2)    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term receivables 145 127
Long-term debt and related current maturities $ 19,837 $ 13,578