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Fair Value Measurements, Nonrecurring (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 1 Months Ended | 9 Months Ended | 1 Months Ended | 9 Months Ended |  |  |  |  |  |  |
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Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012 | Dec. 31, 2012 | Sep. 30, 2012 Aruba Refinery [Member] | Mar. 31, 2012 Aruba Refinery [Member] | Sep. 30, 2012 Aruba Refinery [Member] | Sep. 30, 2012 Aruba Refinery [Member] | Mar. 31, 2012 Construction in Progress [Member] | Sep. 30, 2012 Construction in Progress [Member] | Sep. 30, 2012 Retail [Member] | Sep. 30, 2012 Retail [Member] | Sep. 30, 2013 Fair Value, Measurements, Recurring [Member] | Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] | Sep. 30, 2013 Fair Value, Measurements, Nonrecurring [Member] | Dec. 31, 2012 Fair Value, Measurements, Nonrecurring [Member] | Dec. 31, 2012 Fair Value, Measurements, Nonrecurring [Member] Construction in Progress [Member] | Dec. 31, 2012 Fair Value, Measurements, Nonrecurring [Member] Retail [Member] | Dec. 31, 2012 Fair Value, Measurements, Nonrecurring [Member] Fair Value, Inputs, Level 1 [Member] Construction in Progress [Member] | Dec. 31, 2012 Fair Value, Measurements, Nonrecurring [Member] Fair Value, Inputs, Level 1 [Member] Retail [Member] | Dec. 31, 2012 Fair Value, Measurements, Nonrecurring [Member] Fair Value, Inputs, Level 2 [Member] Construction in Progress [Member] | Dec. 31, 2012 Fair Value, Measurements, Nonrecurring [Member] Fair Value, Inputs, Level 2 [Member] Retail [Member] | Mar. 31, 2012 Fair Value, Measurements, Nonrecurring [Member] Fair Value, Inputs, Level 3 [Member] Aruba Refinery [Member] | Dec. 31, 2012 Fair Value, Measurements, Nonrecurring [Member] Fair Value, Inputs, Level 3 [Member] Construction in Progress [Member] | Dec. 31, 2012 Fair Value, Measurements, Nonrecurring [Member] Fair Value, Inputs, Level 3 [Member] Retail [Member] | Sep. 30, 2012 Fair Value, Measurements, Nonrecurring [Member] Fair Value, Inputs, Level 3 [Member] Retail [Member]
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-lived assets, fair value |  |  |  |  |  |  |  |  |  |  |  | $ 5 | $ 5 |  |  |  |  | $ 2 | $ 8 | $ 0 | $ 0 | $ 0 | $ 0 | $ 350 | $ 2 | $ 8 | $ 5
Fair Value Measurements (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets measured at fair value, nonrecurring |  |  |  |  |  |  |  |  |  |  |  |  |  | 138 | 124 | 0 |  |  |  |  |  |  |  |  |  |  |
Liabilities measured at fair value, nonrecurring |  |  |  |  |  |  |  |  |  |  |  |  |  | 30 | 17 | 0 | 0 |  |  |  |  |  |  |  |  |  |
Asset impairment losses | 0 | 345 | 0 | 956 |  | 333 | 595 | 333 | 928 | 16 | 16 | 12 | 12 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-lived assets, carrying value | $ 25,642 |  | $ 25,642 |  | $ 26,300 |  | $ 945 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2420-110228 + Details
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