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Properties, Plant and Equipment | 12 Months Ended
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Dec. 31, 2020
Property, Plant and Equipment [Abstract] |
Properties, Plant and Equipment | Properties, Plant and Equipment 1
| At December 31 |  | Year ended December 31
| Gross Investment at Cost |  | Net Investment |  | Additions at Cost 2 |  | Depreciation Expense 3
| 2020 | 2019 | 2018 |  | 2020 | 2019 | 2018 |  | 2020 | 2019 | 2018 |  | 2020 | 2019 | 2018
Upstream |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
United States | $ | 96,555 |  | $ | 82,117 |  | $ | 88,155 |  |  | $ | 38,175 |  | $ | 31,082 |  | $ | 39,526 |  |  | $ | 13,067 |  | $ | 7,751 |  | $ | 6,434 |  |  | $ | 6,841 |  | $ | 15,222 |  | $ | 5,328 |
International | 209,846 |  | 206,292 |  | 215,329 |  |  | 102,010 |  | 102,639 |  | 113,603 |  |  | 11,069 |  | 3,664 |  | 4,865 |  |  | 11,121 |  | 12,618 |  | 12,726 |
Total Upstream | 306,401 |  | 288,409 |  | 303,484 |  |  | 140,185 |  | 133,721 |  | 153,129 |  |  | 24,136 |  | 11,415 |  | 11,299 |  |  | 17,962 |  | 27,840 |  | 18,054 |
Downstream |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
United States | 26,499 |  | 25,968 |  | 24,685 |  |  | 11,101 |  | 11,398 |  | 10,838 |  |  | 638 |  | 1,452 |  | 1,259 |  |  | 851 |  | 869 |  | 751 |
International | 7,993 |  | 7,480 |  | 7,237 |  |  | 3,395 |  | 3,114 |  | 3,023 |  |  | 573 |  | 355 |  | 278 |  |  | 283 |  | 256 |  | 282 |
Total Downstream | 34,492 |  | 33,448 |  | 31,922 |  |  | 14,496 |  | 14,512 |  | 13,861 |  |  | 1,211 |  | 1,807 |  | 1,537 |  |  | 1,134 |  | 1,125 |  | 1,033 |
All Other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
United States | 4,195 |  | 4,719 |  | 4,667 |  |  | 1,916 |  | 2,236 |  | 2,186 |  |  | 194 |  | 324 |  | 224 |  |  | 403 |  | 243 |  | 320 |
International | 144 |  | 146 |  | 171 |  |  | 21 |  | 25 |  | 31 |  |  | 5 |  | 9 |  | 6 |  |  | 9 |  | 10 |  | 12 |
Total All Other | 4,339 |  | 4,865 |  | 4,838 |  |  | 1,937 |  | 2,261 |  | 2,217 |  |  | 199 |  | 333 |  | 230 |  |  | 412 |  | 253 |  | 332 |
Total United States | 127,249 |  | 112,804 |  | 117,507 |  |  | 51,192 |  | 44,716 |  | 52,550 |  |  | 13,899 |  | 9,527 |  | 7,917 |  |  | 8,095 |  | 16,334 |  | 6,399 |
Total International | 217,983 |  | 213,918 |  | 222,737 |  |  | 105,426 |  | 105,778 |  | 116,657 |  |  | 11,647 |  | 4,028 |  | 5,149 |  |  | 11,413 |  | 12,884 |  | 13,020 |
Total | $ | 345,232 |  | $ | 326,722 |  | $ | 340,244 |  |  | $ | 156,618 |  | $ | 150,494 |  | $ | 169,207 |  |  | $ | 25,546 |  | $ | 13,555 |  | $ | 13,066 |  |  | $ | 19,508 |  | $ | 29,218 |  | $ | 19,419 |
1 Other than the United States and Australia, no other country accounted for 10 percent or more of the company’s net properties, plant and equipment (PP&E) in 2020. Australia had PP&E of $48,060, $51,359 and $53,768 in 2020, 2019 and 2018, respectively. Gross Investment at Cost, Net Investment and Additions at Cost for 2020 each include $16,703 associated with the Noble acquisition. 2 Net of dry hole expense related to prior years’ expenditures of $709, $49 and $343 in 2020, 2019 and 2018, respectively. 3 Depreciation expense includes accretion expense of $560, $628 and $654 in 2020, 2019 and 2018, respectively, and impairments of $2,792, $10,797 and $735 in 2020, 2019 and 2018, respectively.

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99893-112916 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=120429125&loc=SL120174063-112916 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99779-112916 + Details
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