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Risk Management Activities (Tables) | 12 Months Ended
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Dec. 31, 2019
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 derivative financial instruments at December 31, 2019 and 2018, respectively. Certain amounts may be presented on a net basis on the consolidated financial statements when such amounts are with the same counterparty and subject to a master netting arrangement (in thousands):
|  |  |  | Fair Value at December 31,
Description |  | Location on Balance Sheet |  | 2019 |  | 2018
Asset Derivatives |  |  |  |  |  |
Crude oil, NGLs and natural gas derivative contracts - |  |  |  |  |  |
Current portion |  | Assets from Price Risk Management Activities (1) |  | $ | 1,299 |  |  | $ | 23,806 |
Liability Derivatives |  |  |  |  |  |  |  |
Crude oil, NGLs and natural gas derivative contracts - |  |  |  |  |  |  |  |
Current portion |  | Liabilities from Price Risk Management Activities (2) |  | $ | 20,194 |  |  | $ | — |
(1) | The current portion of Assets from Price Risk Management Activities consists of gross assets of $3 million, partially offset by gross liabilities of $2 million, at December 31, 2019.
(2) The current portion of Liabilities from Price Risk Management Activities consists of gross liabilities of $23 million, partially offset by gross assets of $3 million at December 31, 2019.
Crude Oil [Member] | Midland Differential Basis Swap [Member] |
Derivatives, Fair Value [Line Items] |
Schedule of Derivative Instruments | Presented below is a comprehensive summary of EOG's Midland Differential basis swap contracts for the year ended December 31, 2019. The weighted average price differential expressed in dollars per barrel ($/Bbl) represents the amount of reduction to Cushing, Oklahoma, prices for the notional volumes expressed in barrels per day (Bbld) covered by the basis swap contracts.
| Midland Differential Basis Swap Contracts
|  |  | Volume (Bbld) |  | Weighted Average Price Differential ($/Bbl)
| 2019 |  |  |  |
| January 1, 2019 through December 31, 2019 (closed) |  | 20,000 |  |  | $ | 1.075 |
Crude Oil [Member] | Gulf Coast Differential Basis Swap [Member] |
Derivatives, Fair Value [Line Items] |
Schedule of Derivative Instruments | Presented below is a comprehensive summary of EOG's Gulf Coast Differential basis swap contracts for the year ended December 31, 2019. The weighted average price differential expressed in $/Bbl represents the amount of addition to Cushing, Oklahoma, prices for the notional volumes expressed in Bbld covered by the basis swap contracts.
| Gulf Coast Differential Basis Swap Contracts
|  |  | Volume (Bbld) |  | Weighted Average Price Differential ($/Bbl)
| 2019 |  |  |  |
| January 1, 2019 through December 31, 2019 (closed) |  | 13,000 |  |  | $ | 5.572 |
Crude Oil [Member] | Price Swap [Member] |
Derivatives, Fair Value [Line Items] |
Schedule of Derivative Instruments | Presented below is a comprehensive summary of EOG's crude oil price swap contracts for the year ended December 31, 2019, with notional volumes expressed in Bbld and prices expressed in $/Bbl.
| Crude Oil Price Swap Contracts
|  |  | Volume (Bbld) |  | Weighted Average Price ($/Bbl)
| 2019 |  |  |  |
| April 2019 (closed) |  | 25,000 |  |  | $ | 60.00 |
| May 1, 2019 through December 31, 2019 (closed) |  | 150,000 |  |  | 62.50 |
| 2020 |  |  |  |
| January 1, 2020 through March 31, 2020 |  | 200,000 |  |  | $ | 59.33 |
| April 1, 2020 through June 30, 2020 |  | 150,000 |  |  | 59.03 |
| July 1, 2020 through September 30, 2020 |  | 50,000 |  |  | 58.32 |
Mont Belvieu Propane Price Swap [Member] | Price Swap [Member] |
Derivatives, Fair Value [Line Items] |
Schedule of Derivative Instruments | Presented below is a comprehensive summary of EOG's Mont Belvieu propane (non-TET) price swap contracts for the year ended December 31, 2019, with notional volumes expressed in Bbld and prices expressed in $/Bbl.
| Mont Belvieu Propane Price Swap Contracts
|  |  | Volume (Bbld) |  | Weighted Average Price ($/Bbl)
| 2020 |  |  |  |
| January 1, 2020 through December 31, 2020 |  | 4,000 |  |  | $ | 21.34 |
Natural Gas [Member] | Price Swap [Member] |
Derivatives, Fair Value [Line Items] |
Schedule of Derivative Instruments | Presented below is a comprehensive summary of EOG's natural gas price swap contracts for the year ended December 31, 2019, with notional volumes expressed in million British thermal units (MMBtu) per day (MMBtud) and prices expressed in dollars per MMBtu ($/MMBtu).
| Natural Gas Price Swap Contracts
|  |  | Volume (MMBtud) |  | Weighted Average Price ($/MMBtu)
| 2019 |  |  |  |
| April 1, 2019 through October 31, 2019 (closed) |  | 250,000 |  |  | $ | 2.90 |
Natural Gas [Member] | Rockies Differential Basis Swaps [Member] |
Derivatives, Fair Value [Line Items] |
Schedule of Derivative Instruments | Presented below is a comprehensive summary of EOG's Rockies Differential basis swap contracts for the year ended December 31, 2019. The weighted average price differential expressed in $/MMBtu represents the amount of reduction to NYMEX Henry Hub prices for the notional volumes expressed in MMBtud covered by the basis swap contracts.
| Rockies Differential Basis Swap Contracts
|  |  | Volume (MMBtud) |  | Weighted Average Price Differential ($/MMBtu)
| 2020 |  |  |  |
| January 1, 2020 through December 31, 2020 |  | 30,000 |  |  | $ | 0.55 |
Natural Gas [Member] | HSC Differential Basis Swaps [Member] |
Derivatives, Fair Value [Line Items] |
Schedule of Derivative Instruments | Presented below is a comprehensive summary of EOG's HSC Differential basis swap contracts for the year ended December 31, 2019. The weighted average price differential expressed in $/MMBtu represents the amount of reduction to NYMEX Henry Hub prices for the notional volumes expressed in MMBtud covered by the basis swap contracts.
| HSC Differential Basis Swap Contracts
|  |  | Volume (MMBtud) |  | Weighted Average Price Differential ($/MMBtu)
| 2020 |  |  |  |
| January 1, 2020 through December 31, 2020 |  | 60,000 |  |  | $ | 0.05 |
Natural Gas [Member] | Waha Differential Basis Swaps [Member] |
Derivatives, Fair Value [Line Items] |
Schedule of Derivative Instruments | Presented below is a comprehensive summary of EOG's Waha Differential basis swap contracts for the year ended December 31, 2019. The weighted average price differential expressed in $/MMBtu represents the amount of reduction to NYMEX Henry Hub prices for the notional volumes expressed in MMBtud covered by the basis swap contracts.
| Waha Differential Basis Swap Contracts
|  |  | Volume (MMBtud) |  | Weighted Average Price Differential ($/MMBtu)
| 2020 |  |  |  |
| January 1, 2020 through December 31, 2020 |  | 50,000 |  |  | $ | 1.40 |

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