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Discontinued Operations (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013
Liabilities and Expenses Related to the Aruba Refinery (Textual) |  |  |  |
Asset retirement obligation charged to accretion expense |  |  | $ 63 | $ 0
Aruba Refinery [Member] |  |  |  |
Selected Results of Operations of the Aruba Refinery |  |  |  |
Operating revenues | 0 | 0 | 0 | 0
Income (loss) before income taxes | (63) | 3 | (64) | 6
Liabilities and Expenses Related to the Aruba Refinery (Textual) |  |  |  |
Asset retirement obligation recognized | 59 |  | 59 |
Asset retirement obligation charged to accretion expense | 59 |  | 59 |
Liabilities recognized for obligations under certain contracts | 4 |  | 4 |
Total liabilities recorded | 63 |  | 63 |
Liabilities classified as current liability | 30 |  | 30 |
Liabilities classified as long-term liability | $ 33 |  | $ 33 |
Required dismantlement period | 3 years |  |  |

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- Definition The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Asset Retirement Obligation -URI http://asc.fasb.org/extlink&oid=6505190 + Details
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