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Stockholder's Equity (Details) - $ / shares |  | 12 Months Ended |
--- | --- | --- | ---
Feb. 27, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
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 Declared Per Share |  | $ 0.2875 | $ 0.22 | $ 0.1850 |  |
Dividends Payable, Amount Per Share After Increase |  | $ 0.375 | $ 0.2875 | $ 0.22 | $ 0.1675 |
Common Stock, Shares Authorized |  |  | 1,280,000,000 | 1,280,000,000 | 1,280,000,000 | 640,000,000
Percentage increase of cash dividend on common stock |  |  |  | 19.00% | 10.00% |
Common Stock Activity [Line Items] |  |  |  |  |  |
Balance (in shares) |  |  | 580,408,117 |  |  |
Balance (in shares) |  |  | 582,213,016 | 580,408,117 |  |
Preferred Stock, Shares Outstanding |  |  | 0 |  |  |
Common Shares, Outstanding [Member] |  |  |  |  |  |
Common Stock Activity [Line Items] |  |  |  |  |  |
Balance (in shares) |  |  | 580,023,000 | 578,477,000 | 576,700,000 |
Common Stock Issued Under Stock-Based Compensation Plans (in shares) |  |  | 1,688,000 | 1,580,000 | 1,878,000 |
Treasury Stock Purchased (1) (in shares) | [1] |  | (310,000) | (539,000) | (686,000) |
Common Stock Issued Under Employee Stock Purchase Plan (in shares) |  |  | 223,000 | 180,000 | 180,000 |
Treasury Stock Issued Under Stock-Based Compensation Plans (in shares) |  |  | 290,000 | 325,000 | 405,000 |
Balance (in shares) |  |  | 581,914,000 | 580,023,000 | 578,477,000 |
Common Shares, Treasury [Member] |  |  |  |  |  |
Common Stock Activity [Line Items] |  |  |  |  |  |
Balance (in shares) |  |  | (385,000) | (351,000) | (250,000) |
Common Stock Issued Under Stock-Based Compensation Plans (in shares) |  |  | 0 | 0 | 0 |
Treasury Stock Purchased (1) (in shares) | [1] |  | (310,000) | (539,000) | (686,000) |
Common Stock Issued Under Employee Stock Purchase Plan (in shares) |  |  | 106,000 | 180,000 | 180,000 |
Treasury Stock Issued Under Stock-Based Compensation Plans (in shares) |  |  | 290,000 | 325,000 | 405,000 |
Balance (in shares) |  |  | (299,000) | (385,000) | (351,000) |
Common Shares, Issued [Member] |  |  |  |  |  |
Common Stock Activity [Line Items] |  |  |  |  |  |
Balance (in shares) |  |  | 580,408,000 | 578,828,000 | 576,950,000 |
Common Stock Issued Under Stock-Based Compensation Plans (in shares) |  |  | 1,688,000 | 1,580,000 | 1,878,000 |
Treasury Stock Purchased (1) (in shares) | [1] |  | 0 | 0 | 0 |
Common Stock Issued Under Employee Stock Purchase Plan (in shares) |  |  | 117,000 | 0 | 0 |
Treasury Stock Issued Under Stock-Based Compensation Plans (in shares) |  |  | 0 | 0 | 0 |
Balance (in shares) |  |  | 582,213,000 | 580,408,000 | 578,828,000 |
[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 unit grants or (ii) in payment of the exercise price of employee stock options.

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