RELATED PARTIES (Summary of Balance Sheet Presentation) (Details) - USD ($) $ in Millions |
Mar. 31, 2018 |
Jan. 01, 2018 |
Dec. 31, 2017 |
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| Related Party Transaction [Line Items] | Ìý | Ìý | Ìý |
| Partnership distribution payable | $ 44.2 | $ 44.2 | $ 44.2 |
| Related Party Transaction, Due from (to) Related Party | 11.4 | Ìý | 8.1 |
| Trade Accounts Receivable [Member] | Ìý | Ìý | Ìý |
| Related Party Transaction [Line Items] | Ìý | Ìý | Ìý |
| Due from Related Parties, Current | 7.9 | Ìý | 68.1 |
| Derivative [Member] | Ìý | Ìý | Ìý |
| Related Party Transaction [Line Items] | Ìý | Ìý | Ìý |
| Due from Related Parties, Current | 91.3 | Ìý | 37.9 |
| Due to Related Parties, Current | (42.0) | Ìý | (41.4) |
| Accounts Payable [Member] | Ìý | Ìý | Ìý |
| Related Party Transaction [Line Items] | Ìý | Ìý | Ìý |
| Due to Related Parties, Current | (1.2) | Ìý | 0.0 |
| Other Current Liabilities [Member] | Ìý | Ìý | Ìý |
| Related Party Transaction [Line Items] | Ìý | Ìý | Ìý |
| Due to Related Parties, Current | $ (0.4) | Ìý | $ (12.3) |
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- Definition The aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due within one year (or one business cycle). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Receivables to be collected from (obligations owed to) related parties, net as of the balance sheet date where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Amount of borrowings from a creditor other than a bank with a maturity within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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