XML 163 R115.htm IDEA: XBRL DOCUMENT v2.4.1.9
SUPPLEMENTARY OIL AND GAS INFORMATION (UNAUDITED) (Schedule of Standardized Measure of Future Net Cash Flows) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Line Items]        
Fair Value Inputs, Discount Rate 10.00%us-gaap_FairValueInputsDiscountRate      
Future cash inflows $ 29,504us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesCashInflows $ 38,901us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesCashInflows    
Future production expense (10,991)us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts (12,774)us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts    
Future development costs (6,448)us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts [1] (6,480)us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts [1]    
Future income tax expense (2,487)us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesIncomeTaxExpense (4,935)us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesIncomeTaxExpense    
Future net cash flows 9,578us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows 14,712us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows    
Discounted at 10% per year (3,157)us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesTenPercentAnnualDiscountForEstimatedTimingOfCashFlows (5,295)us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesTenPercentAnnualDiscountForEstimatedTimingOfCashFlows    
Standardized Measure 6,421us-gaap_StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves 9,417us-gaap_StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves [2] 0us-gaap_StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves [2]  
Asset Retirement Obligation 2,769us-gaap_AssetRetirementObligation 2,328us-gaap_AssetRetirementObligation 1,146us-gaap_AssetRetirementObligation 921us-gaap_AssetRetirementObligation
Oil and Gas Operations Segment [Member]        
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Line Items]        
Asset Retirement Obligation $ 1,800us-gaap_AssetRetirementObligation
/ us-gaap_StatementBusinessSegmentsAxis
= fcx_OilAndGasOperationsSegmentMember
$ 1,800us-gaap_AssetRetirementObligation
/ us-gaap_StatementBusinessSegmentsAxis
= fcx_OilAndGasOperationsSegmentMember
   
Crude Oil and NGL [Member]        
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Line Items]        
Realized Sales Prices Used in Reserve Reports 93.20fcx_RealizedSalesPricesUsedinReserveReports
/ us-gaap_AverageSalesPriceAndProductionCostsPerUnitOfProductionProductionTypeAxis
= us-gaap_CrudeOilAndNGLPerBarrelMember
     
Natural Gas [Member]        
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Line Items]        
Realized Sales Prices Used in Reserve Reports 4.35fcx_RealizedSalesPricesUsedinReserveReports
/ us-gaap_AverageSalesPriceAndProductionCostsPerUnitOfProductionProductionTypeAxis
= us-gaap_NaturalGasReservesMember
     
[1] Includes estimated asset retirement costs of $1.8 billion at December 31, 2014 and 2013.
[2] Includes the results of FM O&G beginning June 1, 2013.