Subsequent Event	9 Months Ended
Sep. 30, 2016
Subsequent Events [Abstract]
Subsequent Event [Text Block]	Subsequent Event On October 4, 2016, EOG completed its previously announced mergers and related asset purchase transactions with Yates Petroleum Corporation (YPC), Abo Petroleum Corporation (ABO), MYCO Industries, Inc. (MYCO) and certain affiliated entities (collectively with YPC, ABO and MYCO, the Yates Entities). Subject to the terms of the agreements, EOG issued to the shareholders of YPC, ABO and MYCO and to certain of the sellers under the related asset purchase transactions an aggregate of approximately 25 million shares of EOG common stock and paid to certain of the sellers under the asset purchase transactions an aggregate of approximately $16 million in cash for total consideration transferred of $2.4 billion. In addition, under the terms of the transactions, EOG repaid approximately $164 million of debt owed by the Yates Entities, which was offset by approximately $64 million of cash of the Yates Entities. The assets of the Yates Entities include producing wells in addition to acreage in the Delaware Basin Core, the Delaware Basin Shelf, the Powder River Basin and other Western basins. The financial results of YPC, ABO and MYCO will be included in EOG's consolidated financial statements beginning October 4, 2016. EOG will account for the mergers with YPC, ABO and MYCO and related asset purchase transactions as a business combination under the acquisition method with EOG as the acquirer. Under the acquisition method, the consideration transferred is allocated to the assets acquired and liabilities assumed based on their estimated fair values, with any excess of the consideration transferred over the estimated fair value of the identifiable net assets acquired recorded as goodwill. Acquisition-related costs are expensed as incurred. Due to the limited time elapsed since the acquisition date, the initial accounting for the business combination is incomplete. As a result, EOG is unable to provide amounts recognized as of October 4, 2016, the acquisition date, for major classes of assets acquired and liabilities assumed from these transactions. This information will be included in EOG's Annual Report on Form 10-K for the year ended December 31, 2016.

Subsequent Event

On October 4, 2016, EOG completed its previously announced mergers and related asset purchase transactions with Yates Petroleum Corporation (YPC), Abo Petroleum Corporation (ABO), MYCO Industries, Inc. (MYCO) and certain affiliated entities (collectively with YPC, ABO and MYCO, the Yates Entities). Subject to the terms of the agreements, EOG issued to the shareholders of YPC, ABO and MYCO and to certain of the sellers under the related asset purchase transactions an aggregate of approximately 25 million shares of EOG common stock and paid to certain of the sellers under the asset purchase transactions an aggregate of approximately $16 million in cash for total consideration transferred of $2.4 billion. In addition, under the terms of the transactions, EOG repaid approximately $164 million of debt owed by the Yates Entities, which was offset by approximately $64 million of cash of the Yates Entities.

The assets of the Yates Entities include producing wells in addition to acreage in the Delaware Basin Core, the Delaware Basin Shelf, the Powder River Basin and other Western basins. The financial results of YPC, ABO and MYCO will be included in EOG's consolidated financial statements beginning October 4, 2016.

EOG will account for the mergers with YPC, ABO and MYCO and related asset purchase transactions as a business combination under the acquisition method with EOG as the acquirer. Under the acquisition method, the consideration transferred is allocated to the assets acquired and liabilities assumed based on their estimated fair values, with any excess of the consideration transferred over the estimated fair value of the identifiable net assets acquired recorded as goodwill. Acquisition-related costs are expensed as incurred.

Due to the limited time elapsed since the acquisition date, the initial accounting for the business combination is incomplete. As a result, EOG is unable to provide amounts recognized as of October 4, 2016, the acquisition date, for major classes of assets acquired and liabilities assumed from these transactions. This information will be included in EOG's Annual Report on Form 10-K for the year ended December 31, 2016.