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Variable Interest Entities (Details) - USD ($) $ in Millions | Mar. 31, 2017 | Dec. 31, 2016 | Mar. 31, 2016 | Dec. 31, 2015
--- | --- | --- | --- | ---
Assets |  |  |  |
Cash and temporary cash investments | $ 4,463 | $ 4,816 | $ 3,778 | $ 4,114
Property, plant, and equipment, net | 26,991 | 26,472 |  |
Liabilities |  |  |  |
Current liabilities | 7,899 | 8,328 |  |
Debt and capital lease obligations, less current portion | 8,369 | $ 7,886 |  |
Variable Interest Entity, Primary Beneficiary [Member] |  |  |  |
Assets |  |  |  |
Cash and temporary cash investments | 240 |  | 253 |
Other current assets | 50 |  | 90 |
Property, plant, and equipment, net | 1,431 |  | 1,353 |
Liabilities |  |  |  |
Current liabilities | 40 |  | 39 |
Debt and capital lease obligations, less current portion | 570 |  | 571 |
Valero Energy Partners LP [Member] |  |  |  |
Assets |  |  |  |
Cash and temporary cash investments | 66 |  | 71 |
Other current assets | 2 |  | 3 |
Property, plant, and equipment, net | 940 |  | 865 |
Liabilities |  |  |  |
Current liabilities | 17 |  | 15 |
Debt and capital lease obligations, less current portion | 525 |  | 525 |
Diamond Green Diesel Holdings LLC [Member] |  |  |  |
Assets |  |  |  |
Cash and temporary cash investments | 159 |  | 167 |
Other current assets | 48 |  | 87 |
Property, plant, and equipment, net | 360 |  | 355 |
Liabilities |  |  |  |
Current liabilities | 16 |  | 17 |
Debt and capital lease obligations, less current portion | 0 |  | 0 |
Other Variable Interest Entities [Member] |  |  |  |
Assets |  |  |  |
Cash and temporary cash investments | 15 |  | 15 |
Other current assets | 0 |  | 0 |
Property, plant, and equipment, net | 131 |  | 133 |
Liabilities |  |  |  |
Current liabilities | 7 |  | 7 |
Debt and capital lease obligations, less current portion | $ 45 |  | $ 46 |

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