FINANCIAL INSTRUMENTS AND FAIR VALUE MEASURES 2 (Details) - Significant Observable Inputs (Level 2) - USD ($) $ in Millions |
Jun. 30, 2018 |
Dec. 31, 2017 |
|---|---|---|
| Carrying Value [Member] | ||
| Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] | ||
| Long-term receivables | $ 354 | $ 296 |
| Long-term debt and related current maturities | 12,637 | 13,924 |
| Estimated Fair Value [Member] | ||
| Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] | ||
| Long-term receivables | 339 | 289 |
| Long-term debt and related current maturities | $ 13,201 | $ 14,695 |