Related Party (Details) (USD $)	6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Aug. 01, 2012 El Paso Natural Gas Company [Member]	Aug. 01, 2012 El Paso Natural Gas Company and El Paso Midstream Investment Company LLC [Member]	Jun. 30, 2014 Kinder Morgan Energy Partners, L.P. [Member]
Related Party Transaction [Line Items]
Equity Method Investment, Ownership Percentage			50.00%	50.00%
Subsidiary debt indemnified by KMI	$ 5,900,000,000
Contingent Debt Obligations	79,000,000	74,000,000
Long-term Debt	20,947,000,000	19,914,000,000
Indemnified by parent of subsidiary debt					$ 175,000,000