Derivative Financial Instruments

Interest Rate Derivatives

We periodically enter into interest rate derivatives to hedge the fair value of debt or hedge against variability in

interest rates. For interest rate cash flow hedges, we record the noncurrent portion of unrealized gains or losses as an

adjustment to other comprehensive income with the current portion recorded as an adjustment to interest expense.

For fair value hedges on long-term debt, we record the noncurrent portion of gains or losses as an adjustment to

long-term debt with the current portion recorded as an adjustment to interest expense. Adjustments resulting from

discontinued hedges continue to be recognized in accordance with their historic hedging relationships.

At March 31, 2019, we had $100.0 million of treasury lock agreements outstanding to protect against the risk of variability of a portion of debt issuances we anticipate to occur in 2019. The fair value of these interest rate derivative agreements at March 31, 2019 was recorded as a current liability of $4.5 million, with the offset recorded to other comprehensive income. We account for these agreements as cash flow hedges.

In first quarter 2019, upon issuance of $500.0 million of 4.85% notes due 2049, we terminated and settled $150.0 million of treasury lock agreements that we had previously entered into to protect against the variability of interest payments on this anticipated debt issuance for a loss of $8.0 million. These agreements were accounted for as cash flow hedges. The loss was recorded to other comprehensive income and will be recognized into earnings as an adjustment to our periodic interest expense over the life of the debt issuance.

Commodity Derivatives

Our butane blending activities produce gasoline, and we can reasonably estimate the timing and quantities of sales of these products. We use a combination of exchange-traded commodities futures contracts and forward purchase and sale contracts to help manage commodity price changes and mitigate the risk of decline in the product margin realized from our butane blending activities. Further, certain of our other commercial operations generate petroleum products, and we also use futures contracts to hedge against price changes for some of these commodities.

Forward physical purchase and sale contracts that qualify for and are elected as normal purchases and sales are accounted for using traditional accrual accounting, whereby changes in the mark-to-market values of such contracts are not recognized in income; rather the revenues and expenses associated with such transactions are recognized during the period when commodities are physically delivered or received. Physical forward commodity contracts subject to this exception are evaluated for the probability of future delivery and are periodically tested once the forecasted period has passed to determine whether similar forward contracts are probable of physical delivery in the future.

We record the effective portion of the gains or losses for commodity-based contracts designated as fair value hedges as adjustments to the assets being hedged and the ineffective portions as well as amounts excluded from the assessment of hedge effectiveness as adjustments to other income or expense. We recognize the change in fair value of economic hedges that hedge against changes in the price of petroleum products that we expect to sell or purchase in the future currently in earnings as adjustments to product sales revenue, cost of product sales or operating expenses, as applicable.

Our open futures contracts at March 31, 2019 were as follows:



Type of Contract/Accounting Methodology	Product Represented by the Contract and Associated Barrels	Maturity Dates
Futures - Economic Hedges	3.3 million barrels of refined products and crude oil	Between April 2019 and January 2020
Futures - Economic Hedges	0.6 million barrels of butane and natural gasoline	Between April 2019 and December 2019

Energy Commodity Derivatives Contracts and Deposits Offsets

At March 31, 2019, we had made margin deposits of $23.8 million for our future contracts with our counterparties, which were recorded as current assets under energy commodity derivatives deposits on our consolidated balance sheets. At December 31, 2018 we held margin deposits of $37.3 million for our future contracts with our counterparties, which were recorded as current liabilities under energy commodity derivatives deposits on our consolidated balance sheets. We have the right to offset the combined fair values of our open futures contracts against our margin deposits under a master netting arrangement for each counterparty; however, we have elected to present the combined fair values of our open futures contracts separately from the related margin deposits on our consolidated balance sheets. Additionally, we have the right to offset the fair values of our futures contracts together for each counterparty, which we have elected to do, and we report the combined net balances on our consolidated balance sheets. A schedule of the derivative amounts we have offset and the deposit amounts we could offset under a master netting arrangement are provided below as of December 31, 2018 and March 31, 2019 (in thousands):



Description	Gross Amounts of Recognized Assets (Liabilities)			Gross Amounts of Assets (Liabilities) Offset in the Consolidated Balance Sheets			Net Amounts of Assets (Liabilities) Presented in the Consolidated Balance Sheets			Margin Deposit Amounts Not Offset in the Consolidated Balance Sheets			Net Asset Amount⁽¹⁾
As of 12/31/2018	$	62,166		$	(7,155	)	$	55,011		$	(37,328	)	$	17,683
As of 3/31/2019	$	(13,869	)	$	597		$	(13,272	)	$	23,820		$	10,548


(1)	Amount represents the maximum loss we would incur if all of our counterparties failed to perform on their derivative contracts.

Impact of Derivatives on Our Financial Statements

Comprehensive Income

The changes in derivative activity included in AOCL for the three months ended March 31, 2018 and 2019 were as follows (in thousands):



	Three Months Ended
	March 31,
Derivative Losses Included in AOCL	2018			2019
Beginning balance	$	(33,755	)	$	(26,480	)
Net gain (loss) on cash flow hedges	5,414			(4,376		)
Reclassification of net loss on cash flow hedges to income	740			627
Ending balance	$	(27,601	)	$	(30,229	)

The following is a summary of the effect on our consolidated statements of income for the three months ended March 31, 2018 and 2019 of derivatives that were designated as cash flow hedges (in thousands):



	Interest Rate Contracts
	Amount of Gain (Loss) Recognized in AOCL on Derivatives		Location of Loss Reclassified from AOCL into Income	Amount of Loss Reclassified from AOCL into Income
Three Months Ended March 31, 2018	$	5,414	Interest expense	$	(740	)



Three Months Ended March 31, 2019	$	(4,376	)	Interest expense	$	(627	)

As of March 31, 2019, the net loss estimated to be classified to interest expense over the next twelve months from AOCL is approximately $2.4 million. This amount relates to the amortization of losses on interest rate contracts over the life of the related debt instruments.

The following table provides a summary of the effect on our consolidated statements of income for the three months ended March 31, 2018 and 2019 of derivatives accounted for as economic hedges (in thousands):



		Amount of Gain (Loss) Recognized on Derivatives
		Three Months Ended
	Location of Gain (Loss) Recognized on Derivatives	March 31,
Derivative Instrument	Location of Gain (Loss) Recognized on Derivatives	2018			2019
Futures contracts	Product sales revenue	$	(7,375	)	$	(54,511	)
Futures contracts	Cost of product sales	(3,944		)	2,273
	Total	$	(11,319	)	$	(52,238	)

The impact of the derivatives in the above table was reflected as cash from operations on our consolidated statements of cash flows.

Balance Sheets

The following tables provide a summary of the fair value of derivatives, which are presented on a net basis in our consolidated balance sheets, that were designated as hedging instruments as of December 31, 2018 and March 31, 2019 (in thousands):

December 31, 2018

Asset Derivatives

Liability Derivatives

Derivative Instrument

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Futures contracts

Energy commodity derivatives contracts, net

462

Energy commodity derivatives contracts, net

—

Interest rate contracts

Other current assets

312

Other current liabilities

8,438

Total

774

Total

8,438

March 31, 2019

Asset Derivatives

Liability Derivatives

Derivative Instrument

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Interest rate contracts

Other current assets

—

Other current liabilities

4,474

The following tables provide a summary of the fair value of derivatives, which are presented on a net basis in our consolidated balance sheets, that were not designated as hedging instruments as of December 31, 2018 and March 31, 2019 (in thousands):

December 31, 2018

Asset Derivatives

Liability Derivatives

Derivative Instrument

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Futures contracts

Energy commodity derivatives contracts, net

61,704

Energy commodity derivatives contracts, net

7,155

March 31, 2019

Asset Derivatives

Liability Derivatives

Derivative Instrument

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Futures contracts

Energy commodity derivatives contracts, net

597

Energy commodity derivatives contracts, net

13,869