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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2021
Income Tax Disclosure [Abstract] |
Deferred Income Tax Assets (Liabilities), Net | The principal components of EOG's total net deferred income tax liabilities at December 31, 2021 and 2020 were as follows (in millions):
| 2021 |  | 2020
Deferred Income Tax Assets (Liabilities) |  |  |
Foreign Oil and Gas Exploration and Development Costs Deducted for Tax Under Book Depreciation, Depletion and Amortization | $ | (19) |  |  | $ | 25 |
Foreign Asset Retirement Obligations | 51 |  |  | — |
Foreign Accrued Expenses and Liabilities | 15 |  |  | — |
Foreign Net Operating Loss | 80 |  |  | 74 |
Foreign Valuation Allowances | (111) |  |  | (97) |
Foreign Other | (5) |  |  | — |
Total Net Deferred Income Tax Assets | $ | 11 |  |  | $ | 2 |
Deferred Income Tax (Assets) Liabilities |  |  |
Oil and Gas Exploration and Development Costs Deducted for Tax Over Book Depreciation, Depletion and Amortization | $ | 5,063 |  |  | $ | 5,028 |
Commodity Hedging Contracts | (97) |  |  | 15 |
Deferred Compensation Plans | (57) |  |  | (43) |
Equity Awards | (86) |  |  | (103) |
Undistributed Foreign Earnings | — |  |  | 10 |
Other | (74) |  |  | (48) |
Total Net Deferred Income Tax Liabilities | $ | 4,749 |  |  | $ | 4,859 |
Total Net Deferred Income Tax Liabilities | $ | 4,738 |  |  | $ | 4,857 |
Components of Income (Loss) Before Income Taxes | The components of Income (Loss) Before Income Taxes for the years indicated below were as follows (in millions):
| 2021 |  | 2020 |  | 2019
United States | $ | 5,787 |  |  | $ | (756) |  |  | $ | 3,466 |
Foreign | 146 |  |  | 17 |  |  | 79 |
Total | $ | 5,933 |  |  | $ | (739) |  |  | $ | 3,545 |
Components of Income Tax Provision (Benefit) | The principal components of EOG's Income Tax Provision (Benefit) for the years indicated below were as follows (in millions):
| 2021 |  | 2020 |  | 2019
Current: |  |  |  |  |
Federal | $ | 1,203 |  |  | $ | (108) |  |  | $ | (152) |
State | 85 |  |  | 7 |  |  | 10 |
Foreign | 105 |  |  | 40 |  |  | 81 |
Total | 1,393 |  |  | (61) |  |  | (61) |
Deferred: |  |  |  |  |
Federal | (41) |  |  | (153) |  |  | 627 |
State | (62) |  |  | (15) |  |  | 33 |
Foreign | (19) |  |  | (18) |  |  | (28) |
Total | (122) |  |  | (186) |  |  | 632 |
Other Non-Current: (1) |  |  |  |  |
Federal | — |  |  | 113 |  |  | 245 |
Foreign | (2) |  |  | — |  |  | (6) |
Total | (2) |  |  | 113 |  |  | 239 |
Income Tax Provision (Benefit) | $ | 1,269 |  |  | $ | (134) |  |  | $ | 810 |
(1) Includes changes in certain amounts that are expected to be paid or received beyond the next twelve months. The primary component in 2020 and 2019 is refundable alternative minimum tax (AMT) credits.
Tax Rate Reconciliation | The differences between taxes computed at the U.S. federal statutory tax rate and EOG's effective rate for the years indicated below were as follows:
| 2021 |  | 2020 |  | 2019
Statutory Federal Income Tax Rate | 21.0 | % |  | 21.0 | % |  | 21.0 | %
State Income Tax, Net of Federal Benefit | 0.3 |  |  | 0.9 |  |  | 1.0 |
Income Tax Provision Related to Foreign Operations | 0.9 |  |  | (0.1) |  |  | 0.9 |
Income Tax Provision Related to Canadian Operations | — |  |  | (2.4) |  |  | — |
Stock-Based Compensation | 0.2 |  |  | (2.9) |  |  | — |
Other | (1.0) |  |  | 1.7 |  |  | — |
Effective Income Tax Rate | 21.4 | % |  | 18.2 | % |  | 22.9 | %
Summary of Valuation Allowance | The principal components of EOG's rollforward of valuation allowances for deferred income tax assets for the years indicated below were as follows (in millions):
| 2021 |  | 2020 |  | 2019
Beginning Balance | $ | 219 |  |  | $ | 201 |  |  | $ | 167 |
Increase (1) | 15 |  |  | 25 |  |  | 31 |
Decrease (2) | (14) |  |  | (11) |  |  | — |
Other (3) | (1) |  |  | 4 |  |  | 3 |
Ending Balance | $ | 219 |  |  | $ | 219 |  |  | $ | 201 |
(1) Increase in valuation allowance related to the generation of tax NOLs and other deferred tax assets. (2) Decrease in valuation allowance associated with adjustments to certain deferred tax assets and their related allowances. (3) Represents dispositions, revisions and/or foreign exchange rate variances and the effect of statutory income tax rate changes.

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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319 + Details
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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
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