Stockholder's Equity (Details) - USD ($)		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Stockholders' Equity Note [Abstract]
An aggregate maximum of shares of common stock authorized for repurchase		10,000,000
Remaining shares available for purchase under share repurchase authorization		6,386,200
Dividends Common Stock Cash			$ 0.125
Percentage increase of cash dividend on common stock paid on October 31, 2014		34.00%
Percentage increase of cash dividend on common stock paid on April 30, 2014		33.00%
Dividends Payable, Amount Per Share After Increase		$ 0.1675
Common Stock Activity [Line Items]
Balance (in shares)		550,150,823
Stock Issued During Period, Shares, Acquisitions		25,000,000
Balance (in shares)		576,950,272	550,150,823
Preferred Stock, Shares Outstanding		0
Common Shares, Outstanding [Member]
Common Stock Activity [Line Items]
Balance (in shares)		549,859,000	548,295,000	546,172,000
Stock Issued During Period, Shares, Acquisitions		25,204,000
Common Stock Issued Under Equity Compensation Plans (in shares)		1,500,000	1,019,000	2,448,000
Treasury Stock Purchased (in shares)	[1]	(922,000)	(581,000)	(1,209,000)
Common Stock Issued Under Employee Stock Purchase Plan (in shares)		212,000	225,000	202,000
Treasury Stock Issued Under Equity Compensation Plans (in shares)		847,000	901,000	682,000
Balance (in shares)		576,700,000	549,859,000	548,295,000
Common Shares, Treasury [Member]
Common Stock Activity [Line Items]
Balance (in shares)		292,000	733,000	206,000
Stock Issued During Period, Shares, Acquisitions		0
Common Stock Issued Under Equity Compensation Plans (in shares)		0	0	0
Treasury Stock Purchased (in shares)	[1]	(922,000)	(581,000)	(1,209,000)
Common Stock Issued Under Employee Stock Purchase Plan (in shares)		117,000	121,000	0
Treasury Stock Issued Under Equity Compensation Plans (in shares)		847,000	901,000	682,000
Balance (in shares)		250,000	292,000	733,000
Common Shares, Issued [Member]
Common Stock Activity [Line Items]
Balance (in shares)		550,151,000	549,028,000	546,378,000
Stock Issued During Period, Shares, Acquisitions		25,204,000
Common Stock Issued Under Equity Compensation Plans (in shares)		1,500,000	1,019,000	2,448,000
Treasury Stock Purchased (in shares)	[1]	0	0	0
Common Stock Issued Under Employee Stock Purchase Plan (in shares)		95,000	104,000	202,000
Treasury Stock Issued Under Equity Compensation Plans (in shares)		0	0	0
Balance (in shares)		576,950,000	550,151,000	549,028,000

[1] Represents shares that were withheld by or returned to EOG (i) in satisfaction of tax withholding obligations that arose upon the exercise of employee stock options or SARs or the vesting of restricted stock, restricted stock unit, performance stock or performance unit grants or (ii) in payment of the exercise price of employee stock options.