Acquisitions and Divestitures	9 Months Ended
	Sep. 30, 2020
Discontinued Operations and Disposal Groups [Abstract]
Acquisitions and Divestitures	Acquisitions and DivestituresDuring the nine months ended September 30, 2020, EOG paid cash for property acquisitions of $67 million in the United States. Additionally, during the nine months ended September 30, 2020, EOG recognized net losses on asset dispositions of $41 million, primarily due to the sales of proved properties and non-cash property exchanges of unproved leasehold in Texas and New Mexico and the disposition of the Marcellus Shale assets, and received proceeds of approximately $189 million, primarily due to the disposition of the Marcellus Shale assets and the sale of other assets in New Mexico. During the nine months ended September 30, 2019, EOG paid cash for property acquisitions of $311 million in the United States. Additionally, during the nine months ended September 30, 2019, EOG recognized net gains on asset dispositions of $4 million and received proceeds of approximately $35 million.