XML 153 R101.htm IDEA: XBRL DOCUMENT v2.4.1.9
Income Taxes - Tax Carryforwards Table (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Foreign Tax Credits [Member]  
Tax Carryforwards [Line Items]  
Tax credit carryforward 167us-gaap_TaxCreditCarryforwardAmount
/ us-gaap_TaxCreditCarryforwardAxis
= apc_ForeignTaxCreditsMember
Foreign Tax Credits [Member] | Earliest Tax Year [Member]  
Tax Carryforwards [Line Items]  
Tax credit carryforward, expiration date Dec. 31, 2022
Foreign Tax Credits [Member] | Latest Tax Year [Member]  
Tax Carryforwards [Line Items]  
Tax credit carryforward, expiration date Dec. 31, 2023
Texas Margins Tax Credit [Member]  
Tax Carryforwards [Line Items]  
Tax credit carryforward 34us-gaap_TaxCreditCarryforwardAmount
/ us-gaap_TaxCreditCarryforwardAxis
= apc_TexasMarginTaxMember
Tax credit carryforward, expiration date Dec. 31, 2026
Foreign [Member]  
Tax Carryforwards [Line Items]  
Net operating loss carryforward 1,165us-gaap_OperatingLossCarryforwards
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_ForeignCountryMember
Foreign [Member] | Earliest Tax Year [Member]  
Tax Carryforwards [Line Items]  
Net operating loss carryforwards, expiration date Dec. 31, 2015
State [Member]  
Tax Carryforwards [Line Items]  
Net operating loss carryforward 4,477us-gaap_OperatingLossCarryforwards
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_StateAndLocalJurisdictionMember
State [Member] | Earliest Tax Year [Member]  
Tax Carryforwards [Line Items]  
Net operating loss carryforwards, expiration date Dec. 31, 2015
State [Member] | Latest Tax Year [Member]  
Tax Carryforwards [Line Items]  
Net operating loss carryforwards, expiration date Dec. 31, 2034