Capitalization (Details) (USD $)	12 Months Ended			0 Months Ended		3 Months Ended				3 Months Ended	12 Months Ended				0 Months Ended	12 Months Ended			0 Months Ended		3 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Jan. 15, 2014 Dividend Paid [Member]	Jan. 28, 2014 Dividend Paid [Member]	Dec. 31, 2013 Dividend Paid [Member]	Dec. 31, 2013 Voting Shares [Member]	Dec. 31, 2012 Voting Shares [Member]	Apr. 30, 2001 Voting Shares [Member]	Sep. 30, 2012 Listed Shares [Member]	Dec. 31, 2013 Listed Shares [Member]	Dec. 31, 2012 Listed Shares [Member]	Sep. 28, 2012 Listed Shares [Member]	May 04, 2012 Common Stock [Member]	Dec. 31, 2013 Parent [Member]	Dec. 31, 2013 KMP [Member]	Dec. 31, 2012 KMP [Member]	Dec. 31, 2011 KMP [Member]	Jan. 15, 2014 KMP [Member] Dividend Paid [Member]	May 01, 2013 Copano Energy LLC [Member] KMP [Member]	Jun. 30, 2013 KMP Acquisition of Copano [Member] KMP [Member]	Dec. 31, 2013 KMP's Drop Down Transaction with KMI [Member]	Dec. 31, 2012 KMP's Drop Down Transaction with KMI [Member]	Dec. 31, 2013 KMP's Drop Down Transaction with KMI [Member] KMP [Member]	Dec. 31, 2012 KMP's Drop Down Transaction with KMI [Member] KMP [Member]	Dec. 31, 2013 Equity Method Investee [Member] KMP [Member]	Dec. 31, 2012 Equity Method Investee [Member] KMP [Member]
Class of Stock [Line Items]
Accounts receivable - affiliated party	$ 10,000,000	$ 12,000,000																								$ 10,000,000	$ 12,000,000
Common Stock, Value, Issued							0	0	100,000		6,113,000,000	5,201,000,000
Shares, Issued									2
Shares, Outstanding															16,000,000
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest															12.70%
Shares issued (in shares)										10,120,000	2,640,196
Sale of Stock, Price Per Share													$ 73.50
Proceeds from Issuance of Common Stock	210,000,000	727,000,000	0								210,000,000
Value of units available for sale under Equity Distribution Agreement														500,000,000
Business acquisition, unit exchange ratio																				0.4563
Non-deductable goodwill																					1,100,000,000
Tax impact of KMI drop-down to KMP																								91,000,000	235,000,000
Stockholders' Equity, Period Increase (Decrease)																						$ 91,000,000	$ 235,000,000
Equivalent distribution value per share delcared																$ 5.33	$ 4.98	$ 4.61	$ 1.36
Number of additional share distributions declared in the period	7,997,862	6,829,396	6,466,991			2,237,258
Distribution made to limited liability company LLC member unit distribution per unit	$ 5.26	$ 4.85	$ 4.58
Distribution Made to Limited Liability Company (LLC) Member, Unit Distribution	7,565,200	6,488,946	6,601,402
Fractional shares to be issued				0.017841
Average ten day closing market price, amount per share					$ 76.230