Related Party Transactions Asset Acquisitions and Non-cash Compensation Expenses (Details) (USD $)	9 Months Ended	12 Months Ended				0 Months Ended			9 Months Ended	12 Months Ended		12 Months Ended				1 Months Ended		3 Months Ended
	Sep. 30, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Kinder Morgan, Inc. [Member]	Dec. 31, 2012 Kinder Morgan, Inc. [Member]	Mar. 03, 2013 EPNG [Member]	Feb. 28, 2013 EPNG [Member]	Mar. 03, 2013 Bear Creek Storage Company LLC [Member]	Sep. 30, 2012 Rockies Express Pipeline LLC [Member]	Dec. 31, 2013 Tennessee Gas natural gas pipeline [Member]	Mar. 14, 2013 Kinder Morgan Energy Partners, L.P. [Member] Express Pipeline System [Member]	Dec. 31, 2013 Partner Capital Components [Domain] Kinder Morgan, Inc. [Member]	Dec. 31, 2012 Partner Capital Components [Domain] Kinder Morgan, Inc. [Member]	Dec. 31, 2011 Private Placement [Member] Kinder Morgan, Inc. [Member]	Dec. 31, 2011 Special bonus payment [Member] Kinder Morgan, Inc. [Member]	Apr. 30, 2009 Greens Bayou Fleeting, LLC. [Member] Kirby Inland Marine, L.P. [Member] Non-managment director on KMPGP board and Charman Emeritus of the Board of Kirby Corporation [Member] Boat fleeting business [Member] Kinder Morgan Energy Partners, L.P. [Member] Boat fleeting business aquired from Megafleet Towing Co. [Member] Mr. C. Berdon Lawrence [Member]	Apr. 30, 2009 Greens Bayou Fleeting, LLC. [Member] Kirby Inland Marine, L.P. [Member] Non-managment director on KMPGP board and Charman Emeritus of the Board of Kirby Corporation [Member] Boat fleeting business [Member] Boat fleeting business aquired from Megafleet Towing Co. [Member] Mr. C. Berdon Lawrence [Member]	Mar. 31, 2011 Partnership [Member] Greens Bayou Fleeting, LLC. [Member] Kirby Inland Marine, L.P. [Member] Non-managment director on KMPGP board and Charman Emeritus of the Board of Kirby Corporation [Member] Boat fleeting business [Member] Kinder Morgan Energy Partners, L.P. [Member] Boat fleeting business aquired from Megafleet Towing Co. [Member] Mr. C. Berdon Lawrence [Member]
Related Party Transaction [Line Items]
Management fee charged to related party as a percentage of operating income									1.00%
Equity Method Investment, Ownership Percentage											33.33%
Subsidiary debt indemnified by KMI										$ 5,900,000,000
Proceeds from Sale of Equity Method Investments																4,000,000
Interest in joint venture received as consideration in sale of business to related party																49.00%	51.00%
Gain (Loss) on Disposition of Assets																		2,000,000
Related Party Transaction, Allocation of Non-cash Compensation Expenses				11,000,000	9,000,000							10,000,000	7,000,000	3,000,000	87,000,000
Related party, equity interest recieved in transaction, percent ownership						100.00%	50.00%	50.00%
Percent of distributions paid that were received by parent	51.00%	49.00%
Percent of distributions paid that were received by parent related to its general partner interest		43.00%	45.00%
Percent of distributions paid that were received by parent related to its limited partner interests		6.00%	6.00%
Goodwill, Written off Related to Sale of Business Unit			$ 85,000,000															$ 11,000,000