v2.4.0.6

Separation of Downstream Business - Additional Information (Detail) (USD $) | 12 Months Ended | 3 Months Ended
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Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009 | Dec. 31, 2011 Phillips 66 [Member] | Dec. 31, 2010 Phillips 66 [Member] | Dec. 31, 2009 Phillips 66 [Member] | Apr. 30, 2012 Planned Separation of Downstream Business [Member] | Apr. 30, 2012 Planned Separation of Downstream Business [Member] Sourced From Senior Notes [Member] | Apr. 30, 2012 Planned Separation of Downstream Business [Member] Sourced From Term Loan [Member] | Apr. 30, 2012 Planned Separation of Downstream Business [Member] Sourced From Cash On Hand [Member]
Assets Held For Sale [Line Items] |  |  |  |  |  |  |  |  |  |
Special cash distribution from Phillips 66 |  |  |  |  |  |  | $ 7,800,000,000 | $ 5,800,000,000 | $ 2,000,000,000 | $ 1,600,000,000
Cash transferred to Phillips 66 at separation |  |  |  |  |  |  | 3,600,000,000 |  |  |
Restricted cash |  |  |  |  |  |  | 2,468,000,000 |  |  |
Separation costs incurred | 17,000,000 |  |  |  |  |  |  |  |  |
Sales and other operating revenues | 65,756,000,000 | 57,296,000,000 | 48,828,000,000 | 15,822,000,000 | 13,412,000,000 | 11,424,000,000 |  |  |  |
Purchased commodities | $ 29,975,000,000 | $ 24,969,000,000 | $ 21,349,000,000 | $ 516,000,000 | $ 479,000,000 | $ 606,000,000 |  |  |  |

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- Definition The cash inflow from the special cash distribution related to the separation of our downstream business. + References No definition available. + Details
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- Definition Cost of oil and gas purchased during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62136-109447 + Details
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- Definition The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. This element is for unclassified presentations; for classified presentations there is a separate and distinct element. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Audit and Accounting Guide (AAG) -Number AAG-BRD -Paragraph 80 -Subparagraph Exhibit 4-8, 3 -IssueDate 2006-05-01 -Chapter 4 -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 Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 + Details
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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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