1.0.0.3 false General Accounting Description false 1 $ false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 USDEPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 2 General Accounting Description [Abstract] 0 apa_GeneralAccountingDescriptionAbstract apa false na duration string General Accounting Description. false false false false false true false false false 1 false false 0 0 false false General Accounting Description. false 3 General Accounting Description 1 apa_GeneralAccountingDescriptionTextBlock apa false na duration string General Accounting Description Text Block. false false false false false false false false false 1 false false 0 0    <div style="font-family: 'Times New Roman',Times,serif"> <div align="center" style="font-size: 10pt; margin-top: 0pt"><b> </b> </div> <div style="display: none">0. General Accounting Description </div> <div align="left" style="font-size: 10pt; margin-top: 6pt">     These financial statements have been prepared by Apache Corporation (Apache or the Company) without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (SEC). They reflect all adjustments that are, in the opinion of management, necessary for a fair statement of the results for the interim periods, on a basis consistent with the annual audited financial statements. All such adjustments are of a normal recurring nature. Certain information, accounting policies and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States (U.S. GAAP) have been omitted pursuant to such rules and regulations, although the Company believes that the disclosures are adequate to make the information presented not misleading. This Quarterly Report on Form 10-Q should be read along with the Annual Report on Form 10-K for the fiscal year ended December 31, 2008, which contains a summary of the Company’s significant accounting policies and other disclosures. Additionally, the Company’s financial statements for prior periods include reclassifications that were made to conform to the current period presentation. </div> </div>  <!-- Begin Block Tagged Note false false General Accounting Description Text Block. No authoritative reference available. false false 1 2 false UnKnown UnKnown UnKnown false true