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Risk Management Activities (Tables) | 9 Months Ended
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Sep. 30, 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 financial derivative instruments at September 30, 2019 and December 31, 2018. 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 thousands):
|  |  |  | Fair Value at
Description |  | Location on Balance Sheet |  | September 30, 2019 |  | December 31, 2018
Asset Derivatives |  |  |  |  |  |
Crude oil and natural gas derivative contracts - |  |  |  |  |  |
Current portion |  | Assets from Price Risk Management Activities (1) |  | $ | 122,627 |  |  | $ | 23,806 |
Liability Derivatives |  |  |  |  |  |
Crude oil and natural gas derivative contracts - |  |  |  |  |  |
Noncurrent portion |  | Other Liabilities |  | $ | 21 |  |  | $ | — |
(1) The current portion of Assets from Price Risk Management Activities consists of gross assets of $124 million, partially offset by gross liabilities of $1 million at September 30, 2019.
Crude Oil | Midland Differential Basis Swaps |
Derivatives, Fair Value [Line Items] |
Schedule of Derivative Instruments | Presented below is a comprehensive summary of EOG's Midland Differential basis swap contracts for the nine months ended September 30, 2019. The weighted average price differential expressed in dollars per barrel ($/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 October 31, 2019 (closed) |  | 20,000 |  |  | $ | 1.075 |
| November 1, 2019 through December 31, 2019 |  | 20,000 |  |  | 1.075 |
Crude Oil | Gulf Coast Differential Basis Swap |
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 nine months ended September 30, 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 October 31, 2019 (closed) |  | 13,000 |  |  | $ | 5.572 |
| November 1, 2019 through December 31, 2019 |  | 13,000 |  |  | 5.572 |
Crude Oil | Price Swaps |
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 nine months ended September 30, 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 September 30, 2019 (closed) |  | 150,000 |  |  | 62.50 |
October 1, 2019 through December 31, 2019 |  | 150,000 |  |  | 62.50 |
Natural Gas | Rockies Differential Basis Swap |
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 nine months ended September 30, 2019. The weighted average price differential expressed in dollars per million British thermal units ($/MMBtu) represents the amount of reduction to NYMEX Henry Hub prices for the notional volumes expressed in MMBtu per day (MMBtud) covered by the basis swap contracts.
| Rockies Differential Basis Swap Contracts
|  |  | Volume (MMBtud) |  | Weighted Average Price Differential ($/MMBtu)
| 2020 |  |  |  |
| January 1, 2020 through December 31, 2020 |  | 14,000 |  |  | $ | 0.55 |
Natural Gas | Price Swaps |
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 nine months ended September 30, 2019, with notional volumes expressed in MMBtud and prices expressed in $/MMBtu.
Natural Gas Price Swap Contracts
|  | Volume (MMBtud) |  | Weighted Average Price ($/MMBtu)
2019 |  |  |  |
April 1, 2019 through October 31, 2019 (closed) |  | 250,000 |  |  | $ | 2.90 |

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