v3.6.0.2
Unaudited Quarterly Financial Information (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]                      
Net Operating Revenues $ 2,402,039 $ 2,118,504 $ 1,775,740 $ 1,354,349 $ 1,796,761 $ 2,172,428 $ 2,469,701 $ 2,318,538 $ 7,650,632 [1] $ 8,757,428 [2] $ 18,035,340 [3]
Operating Income (105,487) (193,480) (288,173) (638,141) (329,753) (6,222,957) 39,626 (172,995) (1,225,281) (6,686,079) 5,241,823
Income (Loss) Before Income Taxes (194,010) (272,250) (380,277) (710,968) (398,826) (6,274,921) (11,478) (236,331) (1,557,505) (6,921,556) 4,995,315
Income Tax (Benefit) Provision (51,658) (82,250) (87,719) (239,192) (114,530) (2,199,182) (16,746) (66,583) (460,819) (2,397,041) 2,079,828
Net Income (Loss) $ (142,352) $ (190,000) $ (292,558) $ (471,776) $ (284,296) $ (4,075,739) $ 5,268 $ (169,748) $ (1,096,686) $ (4,524,515) $ 2,915,487
Net Income (Loss) Per Share                      
Basic (in dollars per share) $ (0.25) [4] $ (0.35) [4] $ (0.53) [4] $ (0.86) [4] $ (0.52) [4] $ (7.47) [4] $ 0.01 [4] $ (0.31) [4] $ (1.98) $ (8.29) $ 5.36
Diluted (in dollars per share) $ (0.25) [4] $ (0.35) [4] $ (0.53) [4] $ (0.86) [4] $ (0.52) [4] $ (7.47) [4] $ 0.01 [4] $ (0.31) [4] $ (1.98) $ (8.29) $ 5.32
Average Number of Common Shares [Abstract]                      
Basic (in shares) 567,337 547,838 547,335 546,715 546,432 545,920 545,504 544,998 553,384 545,697 543,443
Diluted (in shares) 567,337 547,838 547,335 546,715 546,432 545,920 549,683 544,998 553,384 545,697 548,539
[1] EOG had sales activity with three significant purchasers in 2016, one totaling $1.2 billion, one totaling $1.1 billion and one totaling $1.0 billion of consolidated Net Operating Revenues in the United States segment.
[2] EOG had sales activity with two significant purchasers in 2015, one totaling $1.7 billion and the other totaling $1.4 billion of consolidated Net Operating Revenues in the United States segment.
[3] EOG had sales activity with two significant purchasers in 2014, one totaling $4.0 billion and the other totaling $3.0 billion of consolidated Net Operating Revenues in the United States segment.
[4] The sum of quarterly net income (loss) per share may not agree with total year net income (loss) per share as each quarterly computation is based on the weighted average of common shares outstanding.