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Acquisitions (Details) (USD $) | 12 Months Ended | 0 Months Ended | 3 Months Ended | 0 Months Ended | 3 Months Ended |  | 0 Months Ended | 3 Months Ended |  | 1 Months Ended |  | 1 Months Ended |
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2012 Variable Interest Entity, Primary Beneficiary [Member] | Aug. 01, 2011 Interest Percentage - Initial [Member] | Dec. 31, 2011 Interest Percentage - Addition [Member] | Oct. 02, 2011 Meraux Acquisition [Member] | Dec. 31, 2012 Meraux Acquisition [Member] | Dec. 31, 2011 Meraux Acquisition [Member] | Aug. 01, 2011 Pembroke Acquisition [Member] | Sep. 30, 2012 Pembroke Acquisition [Member] | Dec. 31, 2011 Pembroke Acquisition [Member] | Dec. 31, 2009 ASA Acquisition [Member] | Jan. 31, 2010 ASA Acquisition [Member] plants | Dec. 31, 2009 Renew Acquisition [Member] | Feb. 28, 2010 Renew Acquisition [Member] plants
Purchase Price Allocation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current assets, net of cash acquired |  |  |  |  |  |  |  |  |  |  | $ 2,215,000,000 |  |  |  |  |
Inventories |  |  |  |  |  |  |  | 227,000,000 |  |  |  |  |  |  |  |
Property, plant and equipment |  |  |  |  |  |  |  | 293,000,000 |  |  | 947,000,000 |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  |  |  |  | 22,000,000 |  |  |  |  |
Deferred charges and other assets, net |  |  |  |  |  |  |  | 28,000,000 |  |  | 37,000,000 |  |  |  |  |
Current liabilities, less current portion of debt and capital lease obligations |  |  |  |  |  |  |  |  |  |  | (1,294,000,000) |  |  |  |  |
Debt and capital leases assumed, including current portion |  |  |  |  |  |  |  |  |  |  | (12,000,000) |  |  |  |  |
Deferred income taxes |  |  |  |  |  |  |  |  |  |  | (159,000,000) |  |  |  |  |
Other long-term liabilities |  |  |  |  |  |  |  | (1,000,000) |  |  | (60,000,000) |  |  |  |  |
Noncontrolling interest |  |  |  |  |  |  |  |  |  |  | (5,000,000) |  |  |  |  |
Purchase price |  |  |  |  |  |  |  | 547,000,000 |  |  |  |  |  |  |  |
Purchase price, net of cash acquired |  |  |  |  |  |  |  |  |  |  | 1,691,000,000 |  |  |  |  |
Acquisitions (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective date of acquisition |  |  |  |  |  |  | Oct. 01, 2011 |  |  | Aug. 01, 2011 |  |  |  |  |  |
Purchase price of acquired entity |  |  |  |  |  |  | 586,000,000 |  | 547,000,000 | 1,800,000,000 |  | 1,700,000,000 |  | 202,000,000 |  | 79,000,000
Purchase price allocation adjustment to inventory |  |  |  |  |  |  |  | 8,000,000 |  |  |  |  |  |  |  |
Purchase price allocation adjustment to property, plant, and equipment |  |  |  |  |  |  |  | (27,000,000) |  |  | 143,000,000 |  |  |  |  |
Purchase price allocation adjustment to deferred charges and other assets |  |  |  |  |  |  |  | 19,000,000 |  |  |  |  |  |  |  |
Throughput capacity of petroleum refining |  |  |  |  |  |  | 135,000 |  |  | 270,000 |  |  |  |  |  |
Percentage of outstanding shares acquired |  |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  |
Purchase price of working capital |  |  |  |  |  |  |  |  |  | 1,100,000,000 |  |  |  |  |  |
Purchase price allocation adjustment increase to deferred tax liabilities |  |  |  |  |  |  |  |  |  |  | 124,000,000 |  |  |  |  |
Purchase price allocation adjustment increase to other long-term liabilities |  |  |  |  |  |  |  |  |  |  | 17,000,000 |  |  |  |  |
Depreciation expense true-up | 1,574,000,000 | 1,534,000,000 | 1,405,000,000 |  |  |  |  |  |  |  | 6,000,000 |  |  |  |  |
Joint venture ownership percentage |  |  |  | 50.00% | 85.00% | 15.00% |  |  |  |  |  |  |  |  |  |
Number of plants purchased |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  | 1
Other payments to acquire businesses |  |  |  |  |  |  |  |  |  |  |  |  | $ 20,000,000 |  | $ 1,000,000 |

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- Definition The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph e -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 52 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The total purchase price of the acquired entity. This includes cash paid to equity interest holders of the acquired entity, fair value of debt and equity securities issued to equity holders of the acquired entity, and transaction costs paid to third parties to consummate the acquisition. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 35 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The amount of acquisition cost of a business combination allocated to property, plant and equipment to be used in ongoing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph e -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 37 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to inventory acquired in connection with a business combination for which the initial accounting was incomplete. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1500-128463 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 55 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 72 -Subparagraph a(3) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. + 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=6943989&loc=d3e3602-108585 + Details
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- Definition The cash outflow associated with other payments to acquire businesses including deposit on pending acquisitions and preacquisition costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3213-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 15, 17 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 5A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=7880789&loc=SL6759159-111685 + Details
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- Definition Number of plants, pipelines, or facilities purchased. + References No definition available. + Details
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