2.2.0.25falsefalse1100 - Disclosure - Divestitures and Othertruefalsefalse1falsefalseUSDfalsefalse1/1/2010 - 12/31/2010 USD ($) / shares USD ($) $FROM_Jan01_2010_TO_Dec31_2010http://www.sec.gov/CIK0000773910duration2010-01-01T00:00:002010-12-31T00:00:00usdPerShrDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0MMboeStandardhttp://www.anadarko.com/20101231MMboeapc0USDUSD$4false0apc_DivestituresAndOtherTextBlockapcfalsenadurationDisclosure related to divestitures and other.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse003.  Divestitures and Other Gains (Losses) on Divestitures and Other   In 2010, proceeds from divestitures, and net gains on such divestitures, of $70 million and $29 million, respectively, are primarily related to onshore United States oil and gas properties. During 2009 and 2008, the Company closed several unrelated property divestiture transactions, realizing proceeds of $176 million and $2.5 billion before income taxes, respectively, and net gains on divestitures of $44 million and $1.2 billion, respectively. The 2009 gains included $29 million related to divestitures of certain oil and gas properties in Qatar.       During 2008, the Company entered into an agreement to divest its 50% interest in the Peregrino field, offshore Brazil, and certain related assets. The Peregrino divestiture closed in December 2008. Anadarko received approximately $1.4 billion in net after-tax cash proceeds from the sale, recognizing a gain of approximately $800 million. In connection with the sale of its interest in the Peregrino field, Anadarko may receive up to $300 million of contingent consideration in future periods based on the value of oil produced from properties subject to the sale transaction. The Company has not recorded any amounts for this contingent consideration. Additionally, the Company has cash on deposit with the Brazilian federal court pending a decision regarding the rate of tax applicable to the sale of the Peregrino field.        The 2008 gains (losses) on divestitures and other, net include a net $82 million ($52 million after tax) reduction related to corrections resulting from analysis of property records after the adoption of the successful efforts method of accounting. This net amount includes a reduction of $163 million related to 2007. Management concluded that this misstatement was not material relative to 2007 interim and annual results, or to the 2008 periods, and corrected the error in the first quarter of 2008.3.  Divestitures and Other Gains (Losses) on Divestitures and Other   In 2010, proceeds from divestitures, and net gains on suchfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclosure related to divestitures and other.No authoritative reference available.falsefalseDivestitures and Other11Divestitures and OtherUnKnownUnKnownUnKnownUnKnownfalsetrue