DEBT Narrative (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Dec. 31, 2017 |
Sep. 30, 2017 |
Sep. 30, 2017 |
Sep. 30, 2016 |
Jun. 30, 2016 |
|
| Debt Instrument [Line Items] | |||||
| Debt and capital lease obligations | $ 12,300 | $ 12,300 | |||
| Debt fair value | 13,500 | 13,500 | |||
| Commercial Paper | |||||
| Debt Instrument [Line Items] | |||||
| Line of credit facility, maximum borrowing capacity | $ 750 | ||||
| Line of credit, current | $ 445 | $ 445 | |||
| Debt, Weighted Average Interest Rate | 1.39% | 1.39% | |||
| 4.35% Senior Unsecured Notes | |||||
| Debt Instrument [Line Items] | |||||
| Proceeds from debt issuance | $ 1,000 | ||||
| Debt issuance interest rate | 4.35% | 4.35% | |||
| Debt issuance, maturity date | Jan. 01, 2048 | ||||
| Subsequent Event [Member] | |||||
| Debt Instrument [Line Items] | |||||
| Debt issuance interest rate | 7.95% | ||||
| Debt issuance, maturity date | Jan. 01, 2018 | ||||
| Extinguishment of Debt, Amount | $ 382 | ||||
| Domestic Plan [Member] | |||||
| Debt Instrument [Line Items] | |||||
| Defined Benefit Plan, Plan Assets, Contributions by Employer | $ 1,250 | $ 750 | |||