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Impairments and Other Charges (Tables) | 9 Months Ended
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Sep. 30, 2021
Restructuring and Related Activities [Abstract] |
Impairments and Other Charges | The following table presents various pre-tax charges we recorded during the three and nine months ended September 30, 2021 and 2020, which are reflected within "Impairments and other charges" on our condensed consolidated statements of operations.
| Three Months Ended September 30 | Nine Months Ended September 30
Millions of dollars | 2021 | 2020 | 2021 | 2020
Catch-up depreciation | $ | 36 |  | $ | — |  | $ | 36 |  | $ | — |
Severance costs | 15 |  | 83 |  | 15 |  | 356 |
Long-lived asset impairments | — |  | 31 |  | — |  | 2,299 |
Inventory costs and write-downs | — |  | 11 |  | — |  | 505 |
Gain on real estate transaction | (74) |  | — |  | (74) |  | — |
Other | 35 |  | 8 |  | 35 |  | 193 |
Total impairments and other charges | $ | 12 |  | $ | 133 |  | $ | 12 |  | $ | 3,353 |

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- Definition Tabular disclosure of costs incurred for restructuring including, but not limited to, exit and disposal activities, remediation, implementation, integration, asset impairment, and charges against earnings from the write-down of assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140864-122747 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 + Details
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