DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Additional Information (Details) $ in Millions	6 Months Ended
Jun. 30, 2019 USD ($)
Interest rate derivative contracts
Derivative [Line Items]
Cash flow hedge gain (loss) to be reclassified within twelve months	$ (9.2)
Settled Forward-Starting Interest Rate Swaps
Derivative [Line Items]
Cash flow hedge gain (loss) to be reclassified within twelve months	(11.2)
Forward-Starting Interest Rate Swaps
Derivative [Line Items]
Cash flow hedge gain (loss) to be reclassified within twelve months	2.0
Cash Flow Hedge \| Futures
Derivative [Line Items]
Futures contracts for refined products	$ (0.7)

The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)
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- Definition

Amount of gain (loss) from the increase (decrease) in fair value of derivative and nonderivative instruments designated as fair value hedging instruments recognized in the income statement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 25
-Section 50
-Paragraph 1
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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.

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