Divestitures (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
Sep. 30, 2012
Divestitures [Abstract]
Estimated Proceeds from Sales of Producing Properties and Acreage	$ 1,214

Estimated proceeds from the sale of producing properties and acreage.

No definition available.

Name:	eog_Estimatedproceedsfromsalesofproducingpropertiesandacreage
Namespace Prefix:	eog_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration