v3.10.0.1

DERIVATIVES AND RISK MANAGEMENT ACTIVITIES Narrative (Details) bbl in Millions |  |  | 1 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | ---
Jun. 30, 2018 USD ($) bbl | Dec. 31, 2017 USD ($) bbl | Apr. 30, 2018 USD ($) | Jun. 30, 2018 USD ($) | Apr. 15, 2018
Derivative [Line Items] |  |  |  |  |
Cash received from termination of interest rate swaps |  |  | $ 8,000,000 |  |
Margin deposit | $ 200,000 | $ 300,000 |  | $ 200,000 |
Interest rate swaps | Cash Flow Hedges |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Interest rate swaps interest rate received |  |  |  | receive a rate based on the three-month USD LIBOR |
Notional amount of forward-starting interest rate swaps | $ 250,000,000 | $ 600,000,000 |  | $ 250,000,000 |
Notional amount of forward-starting interest rate swaps terminated |  |  | $ 350,000,000 |  |
Commodity contracts |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional amount of commodity contracts, volume (in barrels) | bbl | 1.2 | 1.2 |  |  |
Logistics Notes due 2018 [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Stated interest rate |  |  |  |  | 7.65%

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Aggregate notional amount that was terminated specified by the derivative(s). + References No definition available. + Details
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- Definition Interest rate received under the terms of the interest rate swap agreements. + References No definition available. + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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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. + References No definition available. + Details
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- Definition The amount of cash or securities placed with a broker or counterparty as security for a trading or derivatives securities position which was partially obtained with funds provided by the broker dealer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.8,17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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