Pension and Postretirement Benefits	6 Months Ended
	Jun. 30, 2020
Retirement Benefits [Abstract]
Pension and Postretirement Benefits	Pension and Postretirement BenefitsEOG has defined contribution pension plans in place for most of its employees in the United States, and a defined benefit pension plan covering certain of its employees in Trinidad. For the six months ended June 30, 2020 and 2019, EOG's total costs recognized for these pension plans were $20.7 million and $23.0 million, respectively. EOG also has postretirement medical and dental plans in place for eligible employees and their dependents in the United States and Trinidad, the costs of which are not material.