ACCOUNTING PRONOUNCEMENTS (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2018 |
Jun. 30, 2017 |
Jun. 30, 2018 |
Jun. 30, 2017 |
|
| New Accounting Pronouncements or Change in Accounting Principle [Line Items] | ||||
| Reclassification of selling, general and administrative expenses | $ (377) | $ (326) | $ (721) | $ (702) |
| Amount reclassified from cash provided by (used for) operating activities | 3,338 | 1,309 | ||
| Amount reclassified to cash provided by (used for) investing activities | $ (428) | (5) | ||
| ASU 2016-15 | ||||
| New Accounting Pronouncements or Change in Accounting Principle [Line Items] | ||||
| Amount reclassified from cash provided by (used for) operating activities | 832 | |||
| Amount reclassified to cash provided by (used for) investing activities | 832 | |||
| Accounting Standards Update 2017-17 [Member] | ||||
| New Accounting Pronouncements or Change in Accounting Principle [Line Items] | ||||
| Reclassification of selling, general and administrative expenses | $ 2 | $ 4 | ||