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Fair Value Measurements, Nonrecurring (Details) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2016 | Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015 | Dec. 31, 2015
Fair Value Measurements (Textual) |  |  |  |  |  |
Asset impairment loss |  | $ 0 | $ 0 | $ 56 | $ 0 |
Fair Value, Measurements, Nonrecurring [Member] |  |  |  |  |  |
Fair Value Measurements (Textual) |  |  |  |  |  |
Assets measured at fair value, nonrecurring |  | 0 |  | 0 |  | $ 0
Liabilities measured at fair value, nonrecurring |  | $ 0 |  | $ 0 |  | $ 0
Aruba Terminal [Member] |  |  |  |  |  |
Fair Value Measurements (Textual) |  |  |  |  |  |
Asset impairment loss | $ 56 |  |  |  |  |

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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