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General (Details) (USD $)
In Billions, unless otherwise specified
6 Months Ended 6 Months Ended
Jun. 30, 2014
segment
mi
Mar. 01, 2013
EPNG and EP Midstream [Member]
Mar. 01, 2013
EPNG [Member]
Aug. 01, 2012
El Paso Natural Gas Company and El Paso Midstream Investment Company LLC [Member]
Jun. 30, 2014
El Paso LLC [Member]
Jun. 30, 2014
Kinder Morgan Management, LLC [Member]
Jun. 30, 2014
Kinder Morgan Energy Partners, L.P. [Member]
Kinder Morgan, Inc. [Member]
Schedule of Equity Method Investments [Line Items]              
Miles of pipe 52,000            
Number of pipeline terminals owned interest in and or operated 180            
Number of Reportable Segments 5            
Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest           28.40% 11.40%
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest         39.60%    
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest         2.00%    
Business Acquisition, Percent Acquired   50.00%          
Business Acquisition, Transaction Costs     $ 1.7        
Ownership interest       50.00%