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Derivatives
 12 Months Ended
Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Derivatives
(12) Derivatives

Interest Rate Swaps

We periodically enter into interest rate swaps in connection with new debt issuances. During the debt issuance process, we are exposed to variability in future long-term debt interest payments that may result from changes in the benchmark interest rate (commonly the U.S. Treasury yield) prior to the debt being issued. In order to hedge this variability, we enter into interest rate swaps to effectively lock in the benchmark interest rate at the inception of the swap. Prior to 2017, we did not designate interest rate swaps as hedges and, therefore, included the associated settlement gains and losses as interest expense, net of interest income on the consolidated statements of operations.

In May 2017, we entered into an interest rate swap in connection with the issuance of our 2047 Notes. In accordance with ASC 815, we designated this swap as a cash flow hedge. Upon settlement of the interest rate swap in May 2017, we recorded the associated $2.2 million settlement loss in accumulated comprehensive loss on the consolidated balance sheets. We will amortize the settlement loss into interest expense on the consolidated statements of operations over the term of the 2047 Notes. There was no ineffectiveness related to the hedge. We have no open interest rate swap positions as of December 31, 2018. In addition, the settlement loss is included as an operating cash outflow on the consolidated statement of cash flows for the year ended December 31, 2017.

For the years ended December 31, 2018 and 2017, we amortized an immaterial amount of the settlement loss into interest expense from accumulated other comprehensive income (loss). We expect to recognize and additional $0.1 million of interest expense out of accumulated other comprehensive income (loss) over the next twelve months.

In July 2016, we entered into an interest rate swap in connection with the issuance of the 2026 Notes. We did not designate this swap as a cash flow hedge. Upon settlement of the interest rate swap in July 2016, we recorded the associated $0.4 million gain on settlement as interest expense, net of interest income in the consolidated statement of operations for the year ended December 31, 2016.

Commodity Swaps

We manage our exposure to changes in commodity prices by hedging the impact of market fluctuations. Commodity swaps are used both to manage and hedge price and location risk related to these market exposures and to manage margins on offsetting fixed-price purchase or sale commitments for physical quantities of crude, condensate, natural gas, and NGLs. We do not designate commodity swaps as cash flow or fair value hedges for hedge accounting treatment under ASC 815. Therefore, changes in the fair value of our derivatives are recorded in revenue in the period incurred. In addition, our commodity risk management policy does not allow us to take speculative positions with our derivative contracts.

We commonly enter into index (float-for-float) or fixed-for-float swaps in order to mitigate our cash flow exposure to fluctuations in the future prices of natural gas, NGLs, and crude oil. For natural gas, index swaps are used to protect against the price exposure of daily priced gas versus first-of-month priced gas. For condensate, crude oil, and natural gas, index swaps are also used to hedge the basis location price risk resulting from supply and markets being priced on different indices. For natural gas, NGLs, condensate, and crude oil, fixed-for-float swaps are used to protect cash flows against price fluctuations: (1) where we receive a percentage of liquids as a fee for processing third-party gas or where we receive a portion of the proceeds of the sales of natural gas and liquids as a fee, (2) in the natural gas processing and fractionation components of our business and (3) where we are mitigating the price risk for product held in inventory or storage.

Assets and liabilities related to our derivative contracts are included in the fair value of derivative assets and liabilities, and the change in fair value of these contracts is recorded net as a gain (loss) on derivative activity on the consolidated statements of operations. We estimate the fair value of all of our derivative contracts based upon actively-quoted prices of the underlying commodities.

The components of gain (loss) on derivative activity in the consolidated statements of operations related to commodity swaps are (in millions):
 
Year Ended December 31,
 
2018
 
2017
 
2016
Change in fair value of derivatives
$
10.1

 
$
4.7

 
$
(20.1
)
Realized gain (loss) on derivatives
(4.9
)
 
(8.9
)
 
9.0

Gain (loss) on derivative activity
$
5.2

 
$
(4.2
)
 
$
(11.1
)


The fair value of derivative assets and liabilities related to commodity swaps are as follows (in millions):
 
December 31, 2018
 
December 31, 2017
Fair value of derivative assets — current
$
28.6

 
$
6.8

Fair value of derivative assets — long-term
4.1

 
—

Fair value of derivative liabilities — current
(21.8
)
 
(8.4
)
Fair value of derivative liabilities — long-term
(2.4
)
 
—

Net fair value of derivatives
$
8.5

 
$
(1.6
)


Set forth below are the summarized notional volumes and fair values of all instruments held for price risk management purposes and related physical offsets at December 31, 2018 (in millions). The remaining term of the contracts extend no later than December 2022.
 
 
 
 
December 31, 2018
Commodity
 
Instruments
 
Unit
 
Volume

 
Fair Value
NGL (short contracts)
 
Swaps
 
Gallons
 
(29.0
)
 
$
4.5

NGL (long contracts)
 
Swaps
 
Gallons
 
7.7

 
0.1

Natural Gas (short contracts)
 
Swaps
 
MMBtu
 
(9.0
)
 
(1.6
)
Natural Gas (long contracts)
 
Swaps
 
MMBtu
 
14.9

 
(1.5
)
Crude and Condensate (short contracts)
 
Swaps
 
MMbbls
 
(12.9
)
 
23.6

Crude and Condensate (long contracts)
 
Swaps
 
MMbbls
 
1.0

 
(16.6
)
Total fair value of derivatives
 
 
 
 
 
 
 
$
8.5



On all transactions where we are exposed to counterparty risk, we analyze the counterparty’s financial condition prior to entering into an agreement, establish limits, and monitor the appropriateness of these limits on an ongoing basis. We primarily deal with financial institutions when entering into financial derivatives on commodities. We have entered into Master ISDAs that allow for netting of swap contract receivables and payables in the event of default by either party. If our counterparties failed to perform under existing swap contracts, the maximum loss on our gross receivable position of $32.7 million as of December 31, 2018 would be reduced to $9.4 million due to the offsetting of gross fair value payables against gross fair value receivables as allowed by the ISDAs.