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Derivative Assets And Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2019
General Discussion of Derivative Instruments and Hedging Activities [Abstract] |
Offsetting Assets [Table Text Block] | The following table presents the fair value of our recognized derivative assets and liabilities on a gross basis and amounts offset on the consolidated balance sheets that are subject to enforceable master netting arrangements or similar arrangements:
|  |  |  | Asset Derivatives |  | Liability Derivatives
|  | Balance Sheet Location |  | December 31, 2019 |  | December 31, 2018 |  | December 31, 2019 |  | December 31, 2018
Derivatives without offsetting agreements |  | Derivative liabilities |  | $ | — |  |  | $ | — |  |  | $ | (399 | ) |  | $ | (163 | )
Derivatives in offsetting agreements: |  |  |  |  |  |  |  |
OTC contracts |  | Derivative assets (liabilities) |  | 41 |  |  | 158 |  |  | (39 | ) |  | (173 | )
Broker cleared derivative contracts |  | Other current assets (liabilities) |  | 343 |  |  | 402 |  |  | (350 | ) |  | (410 | )
|  | 384 |  |  | 560 |  |  | (788 | ) |  | (746 | )
Offsetting agreements: |  |  |  |  |  |  |  |
Counterparty netting |  | Derivative assets (liabilities) |  | (18 | ) |  | (47 | ) |  | 18 |  |  | 47 |
Counterparty netting |  | Other current assets (liabilities) |  | (318 | ) |  | (397 | ) |  | 318 |  |  | 397 |
Total net derivatives |  | $ | 48 |  |  | $ | 116 |  |  | $ | (452 | ) |  | $ | (302 | )
Outstanding Commodity-Related Derivatives | The following table details our outstanding commodity-related derivatives:
| December 31, 2019 |  | December 31, 2018
| Notional Volume |  | Maturity |  | Notional Volume |  | Maturity
Mark-to-Market Derivatives |  |  |  |  |  |  |
(Trading) |  |  |  |  |  |  |
Natural Gas (BBtu): |  |  |  |  |  |  |
Fixed Swaps/Futures | 1,483 |  |  | 2020 |  | 468 |  |  | 2019
Basis Swaps IFERC/NYMEX(1) | (35,208 | ) |  | 2020-2024 |  | 16,845 |  |  | 2019-2020
Options – Puts | — |  |  | — |  | 10,000 |  |  | 2019
Power (Megawatt): |  |  |  |  |  |  |
Forwards | 3,213,450 |  |  | 2020-2029 |  | 3,141,520 |  |  | 2019
Futures | (353,527 | ) |  | 2020 |  | 56,656 |  |  | 2019-2021
Options – Puts | 51,615 |  |  | 2020 |  | 18,400 |  |  | 2019
Options – Calls | (2,704,330 | ) |  | 2020-2021 |  | 284,800 |  |  | 2019
(Non-Trading) |  |  |  |  |  |  |
Natural Gas (BBtu): |  |  |  |  |  |  |
Basis Swaps IFERC/NYMEX | (18,923 | ) |  | 2020-2022 |  | (30,228 | ) |  | 2019-2021
Swing Swaps IFERC | (9,265 | ) |  | 2020 |  | 54,158 |  |  | 2019-2020
Fixed Swaps/Futures | (3,085 | ) |  | 2020-2021 |  | (1,068 | ) |  | 2019-2021
Forward Physical Contracts | (13,364 | ) |  | 2020-2021 |  | (123,254 | ) |  | 2019-2020
NGL (MBbls) – Forwards/Swaps | (1,300 | ) |  | 2020-2021 |  | (2,135 | ) |  | 2019
Crude (MBbls) – Forwards/Swaps | 4,465 |  |  | 2020 |  | 20,888 |  |  | 2019
Refined Products (MBbls) – Futures | (2,473 | ) |  | 2020-2021 |  | (1,403 | ) |  | 2019
Corn (thousand bushels) | (1,210 | ) |  | 2020 |  | (1,920 | ) |  | 2019
Fair Value Hedging Derivatives |  |  |  |  |  |  |
(Non-Trading) |  |  |  |  |  |  |
Natural Gas (BBtu): |  |  |  |  |  |  |
Basis Swaps IFERC/NYMEX | (31,780 | ) |  | 2020 |  | (17,445 | ) |  | 2019
Fixed Swaps/Futures | (31,780 | ) |  | 2020 |  | (17,445 | ) |  | 2019
Hedged Item – Inventory | 31,780 |  |  | 2020 |  | 17,445 |  |  | 2019
(1) Includes aggregate amounts for open positions related to Houston Ship Channel, Waha Hub, NGPL TexOk, West Louisiana Zone and Henry Hub locations.
Interest Rate Swaps Outstanding | The following table summarizes our interest rate swaps outstanding, none of which were designated as hedges for accounting purposes:
Term |  | Type (1) |  | Notional Amount Outstanding
December 31, 2019 |  | December 31, 2018
March 2019 |  | Pay a floating rate and receive a fixed rate of 1.42% |  | $ | — |  |  | $ | 300 |
July 2019 (2) |  | Forward-starting to pay a fixed rate of 3.56% and receive a floating rate |  | — |  |  | 400 |
July 2020 (2)(3) |  | Forward-starting to pay a fixed rate of 3.52% and receive a floating rate |  | 400 |  |  | 400 |
July 2021 (2) |  | Forward-starting to pay a fixed rate of 3.55% and receive a floating rate |  | 400 |  |  | 400 |
July 2022 (2) |  | Forward-starting to pay a fixed rate of 3.80% and receive a floating rate |  | 400 |  |  | — |
(1) Floating rates are based on 3-month LIBOR.
Fair Value Of Derivative Instruments | The following table provides a summary of our derivative assets and liabilities:
| Fair Value of Derivative Instruments
| Asset Derivatives |  | Liability Derivatives
| December 31, 2019 |  | December 31, 2018 |  | December 31, 2019 |  | December 31, 2018
Derivatives designated as hedging instruments: |  |  |  |  |  |  |
Commodity derivatives (margin deposits) | $ | 24 |  |  | $ | — |  |  | $ | — |  |  | $ | (13 | )
| 24 |  |  | — |  |  | — |  |  | (13 | )
Derivatives not designated as hedging instruments: |  |  |  |  |  |  |
Commodity derivatives (margin deposits) | 319 |  |  | 402 |  |  | (350 | ) |  | (397 | )
Commodity derivatives | 41 |  |  | 158 |  |  | (39 | ) |  | (173 | )
Interest rate derivatives | — |  |  | — |  |  | (399 | ) |  | (163 | )
| 360 |  |  | 560 |  |  | (788 | ) |  | (733 | )
Total derivatives | $ | 384 |  |  | $ | 560 |  |  | $ | (788 | ) |  | $ | (746 | )
Partnership's Derivative Assets And Liabilities Amount Of Gain (Loss) Recognized | The following tables summarize the amounts recognized with respect to our derivative financial instruments:
| Location of Gain (Loss) Recognized in Income on Derivatives |  | Amount of Gain (Loss) Recognized in Income Representing Hedge Ineffectiveness and Amount Excluded from the Assessment of Effectiveness
|  |  | Years Ended December 31,
|  |  | 2019 |  | 2018 |  | 2017
Derivatives in fair value hedging relationships (including hedged item): |  |  |  |  |  |  |
Commodity derivatives | Cost of products sold |  | $ | — |  |  | $ | (3 | ) |  | $ | 26 |
Derivatives Not Designated as Hedging Instruments [Table Text Block] |
| Location of Gain (Loss) Recognized in Income on Derivatives |  | Amount of Gain (Loss) Recognized in Income on Derivatives
|  |  | Years Ended December 31,
|  |  | 2019 |  | 2018 |  | 2017
Derivatives not designated as hedging instruments: |  |  |  |  |  |  |
Commodity derivatives – Trading | Revenues |  | $ | (3 | ) |  | $ | — |  |  | $ | — |
Commodity derivatives – Trading | Cost of products sold |  | 21 |  |  | 32 |  |  | 31 |
Commodity derivatives – Non-trading | Cost of products sold |  | (78 | ) |  | (102 | ) |  | 5 |
Interest rate derivatives | Gains (losses) on interest rate derivatives |  | (241 | ) |  | 47 |  |  | (37 | )
Embedded derivatives | Other, net |  | — |  |  | — |  |  | 1 |
Total |  |  | $ | (301 | ) |  | $ | (23 | ) |  | $ | — |

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