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Acquisition (Details) |  | 6 Months Ended
--- | --- | ---
May 14, 2018 USD ($) MBbls | Jun. 30, 2018 USD ($) | Jun. 30, 2017 USD ($)
Business Acquisition (Textual) |  |  |
Amount paid from available cash on hand |  | $ 471,000,000 | $ 0
Pure Biofuels [Member] |  |  |
Business Acquisition (Textual) |  |  |
Percent equity interests acquired | 100.00% |  |
Amount paid from available cash on hand | $ 471,000,000 |  |
Payments for working capital | 122,000,000 |  |
Identifiable intangible assets | 210,000,000 |  |
Goodwill | $ 228,000,000 |  |
Expected amortization period of identifiable intangible assets | 10 years |  |
Total amount of goodwill expected to be deductible for tax purposes | $ 0 |  |
Pure Biofuels [Member] | Port of Callao Terminal [Member] |  |  |
Business Acquisition (Textual) |  |  |
Approximate storage capacity of terminal (in thousands of barrels) | MBbls | 1,000 |  |
Pure Biofuels [Member] | Paita Terminal [Member] |  |  |
Business Acquisition (Textual) |  |  |
Approximate storage capacity of terminal (in thousands of barrels) | MBbls | 180 |  |

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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