v3.10.0.1

ORGANIZATION AND BASIS OF PRESENTATION Narrative 1 (Details) $ / shares in Units, $ in Millions |  |  |  | 1 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jul. 13, 2018 USD ($) $ / shares shares | Jun. 29, 2018 USD ($) $ / shares shares | Apr. 18, 2017 shares | Jul. 13, 2018 USD ($) $ / shares shares | Jun. 30, 2018 shares | Jul. 20, 2018 Rate | Dec. 31, 2017 shares
Class of Stock [Line Items] |  |  |  |  |  |  |
Series D preferred units outstanding |  |  |  |  | 15,760,441 |  | 0
Organization and Operations [Abstract] |  |  |  |  |  |  |
Common limited partner ownership interest held by general partner |  |  |  |  | 11.00% |  |
Number of business segments |  |  |  |  | 3 |  |
Series D Preferred Limited Partner [Member] |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Temporary Equity, Stock Issued During Period, Value, New Issues | $ |  | $ 370.7 |  |  |  |  |
Series D preferred units outstanding |  | 15,760,441 |  |  |  |  |
Common Limited Partner [Member] |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Units issued, price per unit | $ / shares |  | $ 24.17 |  |  |  |  |
Issuance of units (permanent equity) (in units) |  | 413,736 | 14,375,000 |  |  |  |
Subsequent Event [Member] |  |  |  |  |  |  |
Organization and Operations [Abstract] |  |  |  |  |  |  |
Common unit conversion rate | Rate |  |  |  |  |  | 55.00% |
Subsequent Event [Member] | Series D Preferred Limited Partner [Member] |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Temporary Equity, Stock Issued During Period, Value, New Issues | $ | $ 185.2 |  |  | $ 555.9 |  |  |
Series D preferred units outstanding | 23,246,650 |  |  | 23,246,650 |  |  |
Units issued, price per unit | $ / shares | $ 25.38 |  |  | $ 25.38 |  |  |

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- Definition Total units issued during the year due to the sale of units. All partners include general, limited and preferred partners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055 + Details
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