Employee Benefit Plans - Schedule of Performance Unit and Performance Stock Transactions (Details) - Performance Units - USD ($) $ / shares in Units, $ in Millions		12 Months Ended
		Dec. 31, 2022		Dec. 31, 2021		Dec. 31, 2020	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Number of Shares and Units [Roll Forward]
Beginning balance (in shares)		679,000	[1]	613,000	[1]	598,000
Granted (in shares)		122,000		222,000		172,000
Granted for Performance Multiple (in shares)	[2]	0		19,000		66,000
Released (in shares)	[3]	(57,000)		(175,000)		(223,000)
Forfeited (in shares)	[4]	(56,000)		0		0
Ending balance (in shares)	[1]	688,000	[5]	679,000		613,000
Weighted Average Grant Price Stock Option and SARs [Rollfoward]
Beginning balance (in USD per share)		$ 84.97	[1]	$ 88.38	[1]	$ 103.91
Granted (in USD per share)		126.55		95.16		42.77
Granted for Performance Multiple (in USD per share)	[2]	0		113.81		119.10
Released (in USD per share)	[3]	136.74		113.06		103.87
Forfeited (in USD per share)	[4]	136.74		0		0
Ending balance (in USD per share)	[1]	$ 83.82		$ 84.97		$ 88.38
Performance multiple applied at the completion period							50.00%	125.00%	150.00%
Intrinsic value of restricted stock and restricted stock units released during the years		$ 7		$ 13		$ 13
Aggregate intrinsic value of stock and unit outstanding		$ 89		$ 60		$ 31
Minimum performance units and stock allowed to be outstanding (in shares)		0
Maximum performance units and stock allowed to be outstanding (in shares)		1,376,000

[1] The total intrinsic value of Performance Units outstanding at December 31, 2022, 2021 and 2020 was $89 million, $60 million and $31 million, respectively. The intrinsic value is based on the closing market price of the Common Stock on the last trading day of the year.

[2] Upon completion of the performance period for the Performance Units granted in 2017 and 2016, a performance multiple of 125% and 150%, respectively, was applied to each of the grants resulting in additional grants of Performance Units in February 2021 and 2020.

[3] The total intrinsic value of Performance Units released during the years ended December 31, 2022, 2021 and 2020 was $7 million, $13 million and $13 million, respectively. The intrinsic value is based upon the closing price of EOG's common stock on the date Performance Units are released.(3)Upon completion of the performance period for the Performance Units granted in 2018, a performance multiple of 50% was applied to the grants resulting in a forfeiture of Performance Units in February 2022.

[4] Upon completion of the performance period for the Performance Units granted in 2018, a performance multiple of 50% was applied to the grants resulting in a forfeiture of Performance Units in February 2022.

[5] Upon the application of the relevant performance multiple at the completion of each of the remaining performance periods, a minimum of zero and a maximum of 1,376 Performance Units could be outstanding.