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v3.20.2

Properties, Plants and Equipment (Tables) | 6 Months Ended
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Jun. 30, 2020
Property, Plant and Equipment [Abstract] |
Schedule of Properties, Plants and Equipment with Associated Accumulated Depreciation and Amortization | Our gross investment in PP&E and the associated accumulated depreciation and amortization (Accum. D&A) balances were as follows:
| Millions of Dollars |  |  |  |  |  |  |  |  |  |
| June 30, 2020 |  |  |  |  |  | December 31, 2019 |  |  |  |
| Gross PP&E |  | Accum. D&A |  | Net PP&E |  | Gross PP&E |  | Accum. D&A |  | Net PP&E
Midstream | $ | 11,931 |  |  | 2,543 |  |  | 9,388 |  |  | 11,221 |  |  | 2,391 |  |  | 8,830 |
Chemicals | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Refining | 24,110 |  |  | 10,730 |  |  | 13,380 |  |  | 23,692 |  |  | 10,336 |  |  | 13,356 |
Marketing and Specialties (M&S) | 1,695 |  |  | 945 |  |  | 750 |  |  | 1,847 |  |  | 959 |  |  | 888 |
Corporate and Other | 1,401 |  |  | 637 |  |  | 764 |  |  | 1,311 |  |  | 599 |  |  | 712 |
| $ | 39,137 |  |  | 14,855 |  |  | 24,282 |  |  | 38,071 |  |  | 14,285 |  |  | 23,786 |

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- Definition Tabular disclosure by business segment of the depreciation and book value of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References No definition available. + Details
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- References No definition available. + Details
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