Derivative Instruments and Hedging Activities | Note 8 — Derivative Instruments and Hedging Activities The Partnership is exposed to certain market risks associated with its ongoing business operations. Management uses derivative financial and commodity instruments, among other things, to manage these risks. The primary risk managed by derivative instruments is commodity price risk. Although we use derivative financial and commodity instruments to reduce market risk associated with forecasted transactions, we do not use derivative financial and commodity instruments for speculative or trading purposes. The use of derivative instruments is controlled by our risk management and credit policies which govern, among other things, the derivative instruments the Partnership can use, counterparty credit limits and contract authorization limits. Although our commodity derivative instruments extend over a number of years, a significant portion of our commodity derivative instruments economically hedge commodity price risk during the next twelve months. Commodity Price Risk In order to manage market risk associated with the Partnership’s fixed-price programs, the Partnership uses over-the-counter derivative commodity instruments, principally price swap contracts, to reduce propane price volatility associated with a portion of forecasted propane purchases. In addition, the Partnership from time to time enters into price swap agreements to reduce the effects of short term commodity price volatility. At December 31, 2018 , September 30, 2018 and December 31, 2017 , total volumes associated with propane commodity derivatives totaled 248.7 million gallons, 244.8 million gallons and 180.6 million gallons, respectively. At December 31, 2018 , the maximum period over which we are economically hedging propane market price risk is 24 months . Derivative Instruments Credit Risk The Partnership is exposed to credit loss in the event of nonperformance by counterparties to derivative financial and commodity instruments. Our counterparties principally comprise major energy companies and major U.S. financial institutions. We maintain credit policies with regard to our counterparties that we believe reduce overall credit risk. These policies include evaluating and monitoring our counterparties’ financial condition, including their credit ratings, and entering into agreements with counterparties that govern credit limits. Certain of these agreements call for the posting of collateral by the counterparty or by the Partnership in the forms of letters of credit, parental guarantees or cash. Although we have concentrations of credit risk associated with derivative instruments held by certain derivative instrument counterparties, the maximum amount of loss due to credit risk that, based upon the gross fair values of the derivative instruments, we would incur if these counterparties that make up the concentration failed to perform according to the terms of their contracts was not material at December 31, 2018 . Certain of our derivative contracts have credit-risk-related contingent features that may require the posting of additional collateral in the event of a downgrade in the Partnership’s debt rating. At December 31, 2018 , if the credit-risk-related contingent features were triggered, the amount of collateral required to be posted would not be material. Offsetting Derivative Assets and Liabilities Derivative assets and liabilities are presented net by counterparty on the Consolidated Balance Sheets if the right of offset exists. Our derivative instruments comprise over-the-counter transactions. Over-the-counter contracts are bilateral contracts that are transacted directly with a third party. Certain over-the-counter contracts contain contractual rights of offset through master netting arrangements and contract default provisions. In addition, the contracts are subject to conditional rights of offset through counterparty nonperformance, insolvency, or other conditions. In general, most of our over-the-counter transactions are subject to collateral requirements. Types of collateral generally include cash or letters of credit. Cash collateral paid by us to our over-the-counter derivative counterparties, if any, is reflected in the table below to offset derivative liabilities. Cash collateral received by us from our over-the-counter derivative counterparties, if any, is reflected in the table below to offset derivative assets. Certain other accounts receivable and accounts payable balances recognized on the Consolidated Balance Sheets with our derivative counterparties are not included in the table below but could reduce our net exposure to such counterparties because such balances are subject to master netting or similar arrangements. Fair Value of Derivative Instruments The following table presents our derivative assets and liabilities by type, as well as the effects of offsetting, as of December 31, 2018 , September 30, 2018 and December 31, 2017 : December 31, September 30, December 31, Derivative assets not designated as hedging instruments: Commodity contracts $ 958 $ 52,529 $ 41,187 Total derivative assets — gross 958 52,529 41,187 Gross amounts offset in the balance sheet (958 ) (251 ) (633 ) Cash collateral received — (7,270 ) (8,176 ) Total derivative assets — net $ — $ 45,008 $ 32,378 Derivative liabilities not designated as hedging instruments: Commodity contracts $ (27,182 ) $ (251 ) $ (633 ) Total derivative liabilities — gross (27,182 ) (251 ) (633 ) Gross amounts offset in the balance sheet 958 251 633 Cash collateral pledged 10,000 — — Total derivative liabilities — net (a) $ (16,224 ) $ — $ — (a) Derivative liabilities with maturities greater than one year are recorded in “ Other noncurrent liabilities ” on the Condensed Consolidated Balance Sheets. Effects of Derivative Instruments The following table provides information on the effects of derivative instruments on the Condensed Consolidated Statements of Operations for the three months ended December 31, 2018 and 2017 : (Loss) Gain Recognized in Income Location of (Loss) Gain Three Months Ended December 31, 2018 2017 Derivatives Not Designated as Hedging Instruments: Commodity contracts $ (82,762 ) $ 19,614 Cost of sales — propane We are also a party to a number of contracts that have elements of a derivative instrument. These contracts include, among others, binding purchase orders, contracts that provide for the purchase and delivery of propane and service contracts that require the counterparty to provide commodity storage or transportation service to meet our normal sales commitments. Although certain of these contracts have the requisite elements of a derivative instrument, these contracts qualify for NPNS accounting under GAAP because they provide for the delivery of products or services in quantities that are expected to be used in the normal course of operating our business and the price in the contract is based on an underlying that is directly associated with the price of the product or service being purchased or sold. |