Acquisitions and Discontinued Operations Acquisitions (Details) (USD $)	6 Months Ended				0 Months Ended		0 Months Ended		0 Months Ended	6 Months Ended		0 Months Ended		0 Months Ended		0 Months Ended			0 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Jun. 30, 2014 Copano Energy, LLC [Member]	Jan. 17, 2014 Kinder Morgan Energy Partners, L.P. [Member] American Petroleum Tankers and State Class Tankers [Member]	Jun. 30, 2014 Kinder Morgan Energy Partners, L.P. [Member] American Petroleum Tankers and State Class Tankers [Member]	Jan. 17, 2014 Kinder Morgan Energy Partners, L.P. [Member] American Petroleum Tankers [Member] MMBbls	Jun. 30, 2014 Kinder Morgan Energy Partners, L.P. [Member] American Petroleum Tankers [Member]	May 03, 2013 Kinder Morgan Energy Partners, L.P. [Member] Copano Energy, LLC [Member]	Jun. 30, 2014 Kinder Morgan Energy Partners, L.P. [Member] Copano Energy, LLC [Member]	May 01, 2013 Kinder Morgan Energy Partners, L.P. [Member] Copano Energy, LLC [Member]	Jan. 17, 2014 Kinder Morgan Energy Partners, L.P. [Member] Dynamics NASSCO shipyard [Member] State Class Tankers [Member] MMBbls	Jun. 30, 2014 Kinder Morgan Energy Partners, L.P. [Member] Dynamics NASSCO shipyard [Member] State Class Tankers [Member]	Jun. 02, 2013 Kinder Morgan Energy Partners, L.P. [Member] Legado Resources [Member] Goldsmith-Landreth Field Unit [Member]	May 31, 2013 Kinder Morgan Energy Partners, L.P. [Member] Legado Resources [Member] Goldsmith-Landreth Field Unit [Member]	May 03, 2013 Common Units [Member] Kinder Morgan Energy Partners, L.P. [Member] Copano Energy, LLC [Member]	May 01, 2013 Common Units [Member] Kinder Morgan Energy Partners, L.P. [Member] Copano Energy, LLC [Member]	May 01, 2013 Eagle Ford Gathering LLC [Member] Kinder Morgan Energy Partners, L.P. [Member] Copano Energy, LLC [Member]	May 03, 2013 Other Income (Expense) [Member] Eagle Ford Gathering LLC [Member] Kinder Morgan Energy Partners, L.P. [Member] Copano Energy, LLC [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross					$ 961,000,000									$ 280,000,000
Business Acquisition, Cost of Acquired Entity, percent unit for unit											100.00%
Number of Vessels								5					4
Tanker Capacity							330,000,000					330,000,000
Capital expenditures	(1,658,000,000)	(1,268,000,000)										(214,000,000)
Business Combination, Consideration Transferred									5,200,000,000
Business acquisition, unit exchange ratio																	0.4563
Common Units Issued																43,371,210
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned																3,733,000,000
Business Acquisition, Share Price																	$ 86.08
Business Acquisition, Percentage of Voting Interests Acquired																		50.00%
Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage																		50.00%
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain (Loss), Net																			558,000,000
(Gain) loss from the remeasurement of of net assets to fair value																		704,000,000
Equity Method Investments																		146,000,000
Current assets						6,000,000				218,000,000
Property, plant and equipment						951,000,000				2,788,000,000					298,000,000
Investments										300,000,000
Goodwill	6,721,000,000		6,547,000,000			67,000,000				1,248,000,000
Other intangibles										1,375,000,000
Other assets						3,000,000				13,000,000
Total assets						1,027,000,000				5,942,000,000
Less: Fair value of previously held 50% interest in Eagle Ford Gathering LLC									(704,000,000)
Total assets acquired										5,238,000,000
Current liabilities				(208,000,000)		(5,000,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other						(61,000,000)
Other liabilities										28,000,000
Long-term debt										(1,252,000,000)
Noncontrolling interests										(17,000,000)
Asset at Fair Value, Changes in Fair Value Resulting from Changes in Assumptions										87,000,000
Property, Plant and Equipment, Transfers and Changes										17,000,000
Increase (Decrease) in Other Current Assets										3,000,000
Finite-Lived Intangible Asset, Useful Life																25 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities															18,000,000
Asset Retirement Obligations, Noncurrent															$ 12,000,000