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Industry Segments (Tables) | 9 Months Ended
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Sep. 30, 2020
Segment Reporting [Abstract] |
Schedule of industry segments | The following table presents Occidental’s industry segments:
millions |  | Oil and Gas (a) |  | Chemical |  | Midstream and Marketing (b) |  | Corporate and Eliminations (c) |  | Total
Three months ended September 30, 2020 |  |  |  |  |  |  |  |  |  |
Net sales |  | $ | 2,989 |  |  | $ | 937 |  |  | $ | 364 |  |  | $ | (182) |  |  | $ | 4,108 |
Income (loss) from continuing operations before income taxes |  | $ | (1,072) |  |  | $ | 178 |  |  | $ | (2,791) |  |  | $ | (373) |  |  | $ | (4,058) |
Income tax benefit (d) |  | — |  |  | — |  |  | — |  |  | 403 |  |  | 403 |
Income (loss) from continuing operations |  | $ | (1,072) |  |  | $ | 178 |  |  | $ | (2,791) |  |  | $ | 30 |  |  | $ | (3,655) |
Three months ended September 30, 2019 |  |  |  |  |  |  |  |  |  |
Net sales |  | $ | 3,993 |  |  | $ | 1,071 |  |  | $ | 1,163 |  |  | $ | (368) |  |  | $ | 5,859 |
Income (loss) from continuing operations before income taxes |  | $ | 268 |  |  | $ | 207 |  |  | $ | 400 |  |  | $ | (1,449) |  |  | $ | (574) |
Income tax expense |  | — |  |  | — |  |  | — |  |  | (163) |  |  | (163) |
Income (loss) from continuing operations |  | $ | 268 |  |  | $ | 207 |  |  | $ | 400 |  |  | $ | (1,612) |  |  | $ | (737) |
millions |  | Oil and Gas (a) |  | Chemical |  | Midstream and Marketing (b) |  | Corporate and Eliminations (c) |  | Total
Nine months ended September 30, 2020 |  |  |  |  |  |  |  |  |  |
Net sales |  | $ | 10,089 |  |  | $ | 2,745 |  |  | $ | 1,358 |  |  | $ | (543) |  |  | $ | 13,649 |
Income (loss) from continuing operations before income taxes |  | $ | (8,570) |  |  | $ | 472 |  |  | $ | (4,085) |  |  | $ | (2,097) |  |  | $ | (14,280) |
Income tax benefit (d) |  | — |  |  | — |  |  | — |  |  | 1,896 |  |  | 1,896 |
Income (loss) from continuing operations |  | $ | (8,570) |  |  | $ | 472 |  |  | $ | (4,085) |  |  | $ | (201) |  |  | $ | (12,384) |
Nine months ended September 30, 2019 |  |  |  |  |  |  |  |  |  |
Net sales |  | $ | 9,062 |  |  | $ | 3,128 |  |  | $ | 2,888 |  |  | $ | (795) |  |  | $ | 14,283 |
Income (loss) from continuing operations before income taxes |  | $ | 1,478 |  |  | $ | 680 |  |  | $ | 1,010 |  |  | $ | (1,945) |  |  | $ | 1,223 |
Income tax expense |  | — |  |  | — |  |  | — |  |  | (694) |  |  | (694) |
Income (loss) from continuing operations |  | $ | 1,478 |  |  | $ | 680 |  |  | $ | 1,010 |  |  | $ | (2,639) |  |  | $ | 529 |
(a) Includes $795 million in net asset sale losses for the three and nine months ended September 30, 2020. Additionally, for the nine months ended September 30, 2020, includes $7.0 billion related to asset impairments and other charges partially offset by a $1.1 billion gain on the oil collars and calls. (b) Includes $2.7 billion of other-than-temporary impairment of WES equity investment for the three and nine months ended September 30, 2020. Additionally, for the nine months ended September 30, 2020, includes $1.4 billion of impairments related to the write-off of goodwill and a loss from an equity investment related to WES's write-off of its goodwill. (c) Includes $302 million in expenses related to Anadarko acquisition-related costs and a $577 million loss on interest rate swaps for the nine months ended September 30, 2020. (d) Includes a valuation allowance on tax assets of $37 million for the three and nine months ended September 30, 2020.

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8813-108599 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599 + Details
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