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INCOME TAXES (Tables) | 12 Months Ended
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Dec. 31, 2023
Income Tax Disclosure [Abstract] |
Schedule of domestic and foreign components of income from continuing operations before domestic and foreign income taxes | The following summarizes domestic and foreign components of income from continuing operations before domestic and foreign income taxes for the years ended December 31:
millions | 2023 | 2022 | 2021
Domestic | $ | 4,246 |  | $ | 11,314 |  | $ | 1,966 |
Foreign | 2,183 |  | 2,803 |  | 1,739 |
Total income from continuing operations before income taxes | $ | 6,429 |  | $ | 14,117 |  | $ | 3,705 |
Schedule of income tax (expense) benefit for domestic and foreign income taxes on continuing operations | The following summarizes components of income tax (expense) benefit on continuing operations for the years ended December 31:
millions | 2023 | 2022 | 2021
Current |  |  |
Federal | $ | (871) |  | $ | (1,272) |  | $ | (173) |
State and local | (92) |  | (105) |  | (36) |
Foreign | (713) |  | (1,080) |  | (660) |
Total current tax expense | $ | (1,676) |  | $ | (2,457) |  | $ | (869) |
Deferred |  |  |
Federal | (37) |  | 1,569 |  | (191) |
State and local | 25 |  | 57 |  | 153 |
Foreign | (45) |  | 18 |  | (8) |
Total deferred tax (expense) benefit | $ | (57) |  | $ | 1,644 |  | $ | (46) |
Total income tax expense | $ | (1,733) |  | $ | (813) |  | $ | (915) |
Schedule of reconciliation of the United States federal statutory income tax rate to Occidental's worldwide effective tax rate on income from continuing operations stated as a percentage of pre-tax income | The following reconciliation of the U.S federal statutory income tax rate to Occidental’s worldwide effective tax rate on income from continuing operations for the years ended December 31 is stated as a percentage of income from continuing operations before income taxes:
| 2023 | 2022 | 2021
U.S. federal statutory tax rate | 21 | % | 21 | % | 21 | %
Legal entity reorganization | — |  | (18) |  | — |
Enhanced oil recovery credit and other general business credits | — |  | — |  | (3) |
Capital loss | — |  | — |  | (2) |
Tax impact from foreign operations | 3 |  | 3 |  | 8 |
State income taxes, net of federal benefit | 1 |  | — |  | (2) |
Uncertain tax positions | 2 |  | — |  | — |
Other | — |  | — |  | 3 |
Worldwide effective tax rate | 27 | % | 6 | % | 25 | %
Schedule of tax effects of temporary differences resulting in deferred income taxes | The tax effects of temporary differences resulting in deferred income taxes as of December 31:
millions | 2023 | 2022
Deferred tax liabilities |  |
Property, plant and equipment differences | $ | (6,994) |  | $ | (7,218) |
Equity investments, partnerships and international subsidiaries | (709) |  | (441) |
Gross long-term deferred tax liabilities | (7,703) |  | (7,659) |
Deferred tax assets |  |
Environmental reserves | 223 |  | 229 |
Postretirement benefit accruals | 229 |  | 235 |
Deferred compensation and benefits | 237 |  | 207 |
Asset retirement obligations | 722 |  | 799 |
Foreign tax credit carryforwards | 2,759 |  | 3,622 |
Business credit carryforwards | 43 |  | 30 |
Net operating loss carryforward | 1,056 |  | 1,058 |
Interest expense carryforward | 11 |  | 11 |
All other | 586 |  | 771 |
Gross long-term deferred tax assets | 5,866 |  | 6,962 |
Valuation allowance | (3,901) |  | (4,785) |
Net long-term deferred tax assets | $ | 1,965 |  | $ | 2,177 |
Total deferred income tax liability, net | $ | (5,738) |  | $ | (5,482) |
Less: foreign deferred tax asset in long-term receivables and other assets, net | (26) |  | (30) |
Total deferred income tax liability | $ | (5,764) |  | $ | (5,512) |
Schedule of reconciliation of the beginning and ending amount of unrecognized tax benefits | A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:
millions | 2023 | 2022 | 2021
Balance as of January 1 | $ | 2,010 |  | $ | 2,026 |  | $ | 2,045 |
Increases related to prior-year positions | — |  | 2 |  | 75 |
Settlements | — |  | — |  | (80) |
Reductions for tax positions of prior years | (59) |  | (18) |  | (14) |
Balance as of December 31 | $ | 1,951 |  | $ | 2,010 |  | $ | 2,026 |

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 9 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-9 + Details
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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 -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-2 + 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 -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 12 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-12 + Details
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- Definition Tabular disclosure for tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other income tax contingencies. Includes, but is not limited to, interest and penalties, reconciliation of unrecognized tax benefits, unrecognized tax benefits that would affect the effective tax rate, tax years that remain subject to examination by tax jurisdictions, and information about positions for which it is reasonably possible that amounts unrecognized will significantly change within 12 months. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-15 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15A -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-15A Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 19 -SubTopic 10 -Topic 740 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-19 + Details
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