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Stockholder's Equity (Details) - USD ($) $ / shares in Units, $ in Billions |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Feb. 24, 2022 | Nov. 04, 2021 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | May 06, 2021
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 |  |  |
Stock Repurchase Program, Authorized Amount |  |  |  | $ 5 |  |  |
Stock Repurchase Program, Remaining Authorized Repurchase Amount |  |  |  | $ 5 |  |  |
Dividends Common Stock Declared Per Share |  | $ 0.75 | $ 0.4125 | $ 0.375 | $ 0.2875 | $ 0.22 |
Dividends Payable, Amount Per Share After Increase |  |  | 0.75 | $ 0.4125 | $ 0.375 | $ 0.2875 |
Common Stock Special Cash Dividends Per Share Declared |  | $ 1.00 | $ 2.00 |  |  |  | $ 1.00
Common Stock Activity [Line Items] |  |  |  |  |  |  |
Beginning Balance (in shares) |  |  |  | 583,694,850 |  |  |
Ending Balance (in shares) |  |  |  | 585,521,512 | 583,694,850 |  |
Preferred Stock, Shares Outstanding |  |  |  | 0 |  |  |
Common Shares, Outstanding |  |  |  |  |  |  |
Common Stock Activity [Line Items] |  |  |  |  |  |  |
Beginning Balance (in shares) |  |  |  | 583,571,000 | 581,914,000 | 580,023,000 |
Common Stock Issued Under Stock-Based Compensation Plans (in shares) |  |  |  | 1,511,000 | 1,482,000 | 1,688,000 |
Treasury Stock Purchased (1) (in shares) | [1] |  |  | (504,000) | (389,000) | (310,000) |
Common Stock Issued Under Employee Stock Purchase Plan (in shares) |  |  |  | 316,000 | 377,000 | 224,000 |
Treasury Stock Issued Under Stock-Based Compensation Plans (in shares) |  |  |  | 371,000 | 187,000 | 289,000 |
Ending Balance (in shares) |  |  |  | 585,265,000 | 583,571,000 | 581,914,000 |
Common Shares, Treasury |  |  |  |  |  |  |
Common Stock Activity [Line Items] |  |  |  |  |  |  |
Beginning Balance (in shares) |  |  |  | 124,000 | 299,000 | 385,000 |
Common Stock Issued Under Stock-Based Compensation Plans (in shares) |  |  |  | 0 | 0 | 0 |
Treasury Stock Purchased (1) (in shares) | [1] |  |  | (504,000) | (389,000) | (310,000) |
Common Stock Issued Under Employee Stock Purchase Plan (in shares) |  |  |  | 0 | 377,000 | 107,000 |
Treasury Stock Issued Under Stock-Based Compensation Plans (in shares) |  |  |  | 371,000 | 187,000 | 289,000 |
Ending Balance (in shares) |  |  |  | 257,000 | 124,000 | 299,000 |
Common Shares, Issued |  |  |  |  |  |  |
Common Stock Activity [Line Items] |  |  |  |  |  |  |
Beginning Balance (in shares) |  |  |  | 583,695,000 | 582,213,000 | 580,408,000 |
Common Stock Issued Under Stock-Based Compensation Plans (in shares) |  |  |  | 1,511,000 | 1,482,000 | 1,688,000 |
Treasury Stock Purchased (1) (in shares) | [1] |  |  | 0 | 0 | 0 |
Common Stock Issued Under Employee Stock Purchase Plan (in shares) |  |  |  | 316,000 | 0 | 117,000 |
Treasury Stock Issued Under Stock-Based Compensation Plans (in shares) |  |  |  | 0 | 0 | 0 |
Ending Balance (in shares) |  |  |  | 585,522,000 | 583,695,000 | 582,213,000 |
[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 or performance unit grants or (ii) in payment of the exercise price of employee stock options.

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