2.2.0.25falsefalse1350 - Disclosure - Asset Retirement Obligations (Tables)truefalsefalse1falsefalseUSDfalsefalse1/1/2010 - 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_AssetRetirementObligationsTableTextBlockapcfalsenadurationAsset Retirement Obligations Tablefalsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel| 1falsefalsefalse00<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 1px"><td style="width: 530px; text-align:left;border-color:#000000;min-width:530px;"> <sup></sup></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 54px; text-align:left;border-color:#000000;min-width:54px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 54px; text-align:left;border-color:#000000;min-width:54px;"> </td></tr><tr style="height: 18px"><td style="width: 530px; text-align:left;border-color:#000000;min-width:530px;"><font style="FONT-STYLE: italic;FONT-FAMILY: Times New Roman;FONT-SIZE: 10.5pt;COLOR: #000000;">millions</font><sup></sup></td><td colspan="2" style="width: 64px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:64px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 10.5pt;COLOR: #000000;TEXT-ALIGN: center;">2010</font></td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 64px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:64px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10.5pt;COLOR: #000000;TEXT-ALIGN: center;">2009</font></td></tr><tr style="height: 18px"><td style="width: 530px; text-align:left;border-color:#000000;min-width:530px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10.5pt;COLOR: #000000;">Carrying amount of asset retirement obligations at January 1</font><sup></sup></td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:10px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 10.5pt;COLOR: #000000;TEXT-ALIGN: center;">$</font></td><td style="width: 54px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:54px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 10.5pt;COLOR: #000000;TEXT-ALIGN: right;">1,446</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:10px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10.5pt;COLOR: #000000;TEXT-ALIGN: center;">$</font></td><td style="width: 54px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:54px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10.5pt;COLOR: #000000;TEXT-ALIGN: right;">1,368</font></td></tr><tr style="height: 18px"><td style="width: 530px; text-align:left;border-color:#000000;min-width:530px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10.5pt;COLOR: #000000;">Liabilities incurred</font><sup></sup></td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 54px; text-align:right;border-color:#000000;min-width:54px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 10.5pt;COLOR: #000000;TEXT-ALIGN: right;">88</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 54px; text-align:right;border-color:#000000;min-width:54px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10.5pt;COLOR: #000000;TEXT-ALIGN: right;">46</font></td></tr><tr style="height: 18px"><td style="width: 530px; text-align:left;border-color:#000000;min-width:530px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10.5pt;COLOR: #000000;">Liabilities settled</font><sup></sup></td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 54px; text-align:right;border-color:#000000;min-width:54px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 10.5pt;COLOR: #000000;TEXT-ALIGN: right;">(36)</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 54px; text-align:right;border-color:#000000;min-width:54px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10.5pt;COLOR: #000000;TEXT-ALIGN: right;">(54)</font></td></tr><tr style="height: 18px"><td style="width: 530px; text-align:left;border-color:#000000;min-width:530px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10.5pt;COLOR: #000000;">Accretion expense</font><sup></sup></td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 54px; text-align:right;border-color:#000000;min-width:54px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 10.5pt;COLOR: #000000;TEXT-ALIGN: right;">92</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 54px; text-align:right;border-color:#000000;min-width:54px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10.5pt;COLOR: #000000;TEXT-ALIGN: right;">89</font></td></tr><tr style="height: 18px"><td style="width: 530px; text-align:left;border-color:#000000;min-width:530px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10.5pt;COLOR: #000000;">Revisions in estimated liabilities</font><sup></sup></td><td style="width: 10px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 54px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:54px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 10.5pt;COLOR: #000000;TEXT-ALIGN: right;">(19)</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 54px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:54px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10.5pt;COLOR: #000000;TEXT-ALIGN: right;">(3)</font></td></tr><tr style="height: 18px"><td style="width: 530px; text-align:left;border-color:#000000;min-width:530px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10.5pt;COLOR: #000000;">Carrying amount of asset retirement obligations at December 31</font><sup> (1)</sup></td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:10px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 10.5pt;COLOR: #000000;TEXT-ALIGN: center;">$</font></td><td style="width: 54px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:54px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 10.5pt;COLOR: #000000;TEXT-ALIGN: right;">1,571</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:10px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10.5pt;COLOR: #000000;TEXT-ALIGN: center;">$</font></td><td style="width: 54px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:54px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10.5pt;COLOR: #000000;TEXT-ALIGN: right;">1,446</font></td></tr><tr style="height: 1px"><td style="width: 530px; text-align:left;border-color:#000000;min-width:530px;"> <sup></sup></td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 54px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:54px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 54px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:54px;"> </td></tr></table></div>      millions2010 2009Carrying amount of asset retirement obligations at January 1$1,446 $1,368Liabilitiesfalsefalsefalsefalsefalse | Otherus-types:textBlockItemTypestringAsset Retirement Obligations TableNo authoritative reference available.falsefalse
11Asset Retirement Obligations (Tables)UnKnownUnKnownUnKnownUnKnownfalsetrue