XML 45 R32.htm IDEA: XBRL DOCUMENT v2.4.1.9
General Organization (Details) (USD $)
0 Months Ended 3 Months Ended 11 Months Ended
Nov. 25, 2014
Mar. 31, 2015
Mar. 31, 2014
Nov. 25, 2014
General [Line Items]        
Loss on impairments of equity investments   $ 26,000,000us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment $ 0us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment  
Enterprise Market Value   130,000,000,000kmi_EnterpriseMarketValue    
Miles Of Pipeline   84,000kmi_MilesOfPipeline    
Number Of Pipeline Terminals Owned Interest In And Or Operated   180kmi_NumberOfPipelineTerminalsOwnedInterestInAndOrOperated    
Loss on impairments of long-lived assets and equity investments   77,000,000us-gaap_AssetImpairmentCharges 0us-gaap_AssetImpairmentCharges  
Other Significant Noncash Transaction, Value of Consideration Given 77,000,000,000us-gaap_OtherSignificantNoncashTransactionValueOfConsiderationGiven1      
KMP [Member]        
General [Line Items]        
Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest       10.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= kmi_KMPMember
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest       2.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= kmi_KMPMember
EPB [Member]        
General [Line Items]        
Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest       39.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= kmi_EpbMember
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest       2.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= kmi_EpbMember
Natural Gas Pipelines [Member]        
General [Line Items]        
Loss on impairments of long-lived assets and equity investments   77,000,000us-gaap_AssetImpairmentCharges
/ us-gaap_StatementBusinessSegmentsAxis
= kmi_NaturalGasPipelinesMember
   
Natural Gas Pipelines [Member] | Fort Union Gas Gathering L.L.C. and Bighorn Gas Gathering L.L.C. [Member]        
General [Line Items]        
Loss on impairments of equity investments   $ 26,000,000us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= kmi_FortUnionGasGatheringL.L.C.andBighornGasGatheringL.L.C.Member
/ us-gaap_StatementBusinessSegmentsAxis
= kmi_NaturalGasPipelinesMember