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Risk Management Activities (Tables) | 6 Months Ended
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Jun. 30, 2021
Derivatives, Fair Value [Line Items] |
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value | The following table sets forth the amounts and classification of EOG's outstanding financial derivative instruments at June 30, 2021 and December 31, 2020. Certain amounts may be presented on a net basis on the Condensed Consolidated Financial Statements when such amounts are with the same counterparty and subject to a master netting arrangement (in millions):
|  |  |  | Fair Value at
Description |  | Location on Balance Sheet |  | June 30, 2021 |  | December 31, 2020
Asset Derivatives |  |  |  |  |  |
Crude oil, NGLs and natural gas derivative contracts - |  |  |  |  |  |
Current portion |  | Assets from Price Risk Management Activities |  | $ | — |  |  | $ | 65 |
Noncurrent Portion |  | Other Assets |  | — |  |  | 1 |
Liability Derivatives |  |  |  |  |  |
Crude oil, NGLs and natural gas derivative contracts - |  |  |  |  |  |
Current portion |  | Liabilities from Price Risk Management Activities (1) |  | $ | 396 |  |  | $ | — |
Noncurrent portion |  | Other Liabilities |  | 14 |  |  | 1 |
(1) The current portion of Liabilities from Price Risk Management Activities consists of gross liabilities of $430 million, partially offset by gross assets of $34 million, at June 30, 2021.
Crude Oil | Price Swaps |
Derivatives, Fair Value [Line Items] |
Schedule of Derivative Instruments | Presented below is a comprehensive summary of EOG's financial commodity derivative contracts as of June 30, 2021. Crude oil and NGL volumes are presented in thousand barrels per day (MBbld) and prices are presented in dollars per barrel ($/Bbl). Natural gas volumes are presented in million British Thermal Units per day (MMBtud) and prices are presented in dollars per million British Thermal Units ($/MMBtu).
Crude Oil Financial Price Swap Contracts
|  |  |  | Contracts Sold
Period |  | Settlement Index |  | Volume (MBbld) |  | Weighted Average Price ($/Bbl)
January 2021 (closed) |  | New York Mercantile Exchange (NYMEX) West Texas Intermediate (WTI) |  | 151 |  |  | $ | 50.06 |
February - March 2021 (closed) |  | NYMEX WTI |  | 201 |  |  | 51.29 |
April - June 2021 (closed) |  | NYMEX WTI |  | 150 |  |  | 51.68 |
July - September 2021 |  | NYMEX WTI |  | 150 |  |  | 52.71 |
January - March 2022 |  | NYMEX WTI |  | 140 |  |  | 65.58 |
April - June 2022 |  | NYMEX WTI |  | 100 |  |  | 64.98 |
July - September 2022 |  | NYMEX WTI |  | 60 |  |  | 64.26 |
October - December 2022 |  | NYMEX WTI |  | 30 |  |  | 63.59 |
Crude Oil | Roll Differential Swap |
Derivatives, Fair Value [Line Items] |
Schedule of Derivative Instruments |
Crude Oil Basis Swap Contracts
|  |  |  | Contracts Sold
Period |  | Settlement Index |  | Volume (MBbld) |  | Weighted Average Price Differential ($/Bbl)
February 2021 (closed) |  | NYMEX WTI Roll Differential (1) |  | 30 |  |  | $ | 0.11 |
March - July 2021 (closed) |  | NYMEX WTI Roll Differential (1) |  | 125 |  |  | 0.17 |
August - December 2021 |  | NYMEX WTI Roll Differential (1) |  | 125 |  |  | 0.17 |
January - December 2022 |  | NYMEX WTI Roll Differential (1) |  | 125 |  |  | 0.15 |
_________________ (1) This settlement index is used to fix the differential in pricing between the NYMEX calendar month average and the physical crude oil delivery month.
Natural Gas Liquids | Mont Belvieu Propane Price Swap |
Derivatives, Fair Value [Line Items] |
Schedule of Derivative Instruments |
NGL Financial Price Swap Contracts
|  |  |  | Contracts Sold
Period |  | Settlement Index |  | Volume (MBbld) |  | Weighted Average Price ($/Bbl)
January - June 2021 (closed) |  | Mont Belvieu Propane (non-Tet) |  | 15 |  |  | $ | 29.44 |
July - December 2021 |  | Mont Belvieu Propane (non-Tet) |  | 15 |  |  | 29.44 |
Natural Gas |
Derivatives, Fair Value [Line Items] |
Schedule of Derivative Instruments |
Natural Gas Financial Price Swap Contracts
|  |  |  | Contracts Sold |  | Contracts Purchased
Period |  | Settlement Index |  | Volume (MMBtud in thousands) |  | Weighted AveragePrice ($/MMBtu) |  | Volume (MMBtud in thousands) |  | Weighted Average Price ($/MMBtu)
January - March 2021 (closed) |  | NYMEX Henry Hub |  | 500 |  |  | $ | 2.99 |  |  | 500 |  |  | $ | 2.43 |
April - July 2021 (closed) |  | NYMEX Henry Hub |  | 500 |  |  | 2.99 |  |  | 570 |  |  | 2.81 |
August - September 2021 |  | NYMEX Henry Hub |  | 500 |  |  | 2.99 |  |  | 570 |  |  | 2.81 |
October - December 2021 |  | NYMEX Henry Hub |  | 500 |  |  | 2.99 |  |  | 500 |  |  | 2.83 |
January - December 2022 (closed) (1) |  | NYMEX Henry Hub |  | 20 |  |  | 2.75 |  |  | — |  |  | — |
April - July 2021 (closed) |  | Japan Korea Marker (JKM) |  | 70 |  |  | 6.65 |  |  | — |  |  | — |
August - September 2021 |  | JKM |  | 70 |  |  | 6.65 |  |  | — |  |  | — |
_________________ (1) In January 2021, EOG executed the early termination provision granting EOG the right to terminate all of its open 2022 natural gas price swap contracts. EOG received net cash of $0.6 million for the settlement of these contracts.

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