ACQUISITIONS Narrative 2 (Details) - USD ($) $ in Millions |
3 Months Ended | |||
|---|---|---|---|---|
Apr. 28, 2017 |
Apr. 18, 2017 |
Mar. 31, 2018 |
Mar. 31, 2017 |
|
| Business Acquisition [Line Items] | ||||
| General partner ownership interest | 2.00% | 2.00% | ||
| Common Limited Partner [Member] | ||||
| Business Acquisition [Line Items] | ||||
| Issuance of units (units) | 14,375,000 | |||
| General Partner [Member] | ||||
| Business Acquisition [Line Items] | ||||
| Net proceeds from issuance of units | $ 13.6 | |||
| General partner ownership interest | 2.00% | |||
| Series B Preferred Limited Partner [Member] | ||||
| Business Acquisition [Line Items] | ||||
| Issuance of units (units) | 15,400,000 | |||
| Logistics Notes Due 2027 [Member] | ||||
| Business Acquisition [Line Items] | ||||
| Senior notes issued | $ 550.0 | |||
| Stated interest rate | 5.625% | |||