v2.4.0.6

Acquisitions and Divestitures KMI Acquisition of El Paso Corporation (Details) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	3 Months Ended				1 Months Ended
	Mar. 31, 2012	Mar. 31, 2012 Common Class A [Member]	Mar. 31, 2012 Class P [Member]	May 25, 2012 KMI's Acquisition of El Paso Corporation [Member]	May 25, 2012 KMI's Acquisition of El Paso Corporation [Member] Class P [Member]	May 24, 2012 KMI's Acquisition of El Paso Corporation [Member] Class P [Member]
Business Acquisition [Line Items]
Business Acquisition, Cost of Acquired Entity, Equity Interests Issued and Issuable						$ 10,600,000,000
Revenue from continuing operations	2,625,000,000
(Loss) income from continuing operations	424,000,000
Income from discontinued operations	(357,000,000)
Net income attributable to Kinder Morgan, Inc.	95,000,000
Basic and diluted net income from continuing operations per share		$ 0.07	$ 0.09
Loss on remeasurement of assets of disposal group to fair value, net of tax	(428,000,000)
Business Acquisition, Cost of Acquired Entity, Cash Paid, Excluding Debt Assumed				23,000,000,000
Business Acquisition, Cost of Acquired Entity, Cash Paid				11,600,000,000
Share issued (in shares)					330
Class of Warrant or Right, Number of Securities Called by Warrants or Rights				505
Class of Warrant or Right, Term				5 years
Warrants and Rights Outstanding				$ 863,000,000

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