v2.4.0.8

Stockholders' Equity Common Equity (Details) (USD $) In Millions, except Share data, unless otherwise specified | 0 Months Ended | 3 Months Ended |  |  | 3 Months Ended |  |  | 3 Months Ended | 0 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 04, 2014 | Oct. 17, 2013 | Mar. 31, 2014 | Mar. 31, 2013 | Dec. 31, 2013 | Dec. 31, 2012 | Mar. 31, 2014 Class P [Member] | Mar. 31, 2013 Class P [Member] | Dec. 31, 2013 Class P [Member] | Dec. 31, 2012 Class P [Member] | Mar. 31, 2014 KMI EP Capital Trust I, due 2028 [Member] Class P [Member] | Mar. 31, 2013 KMI EP Capital Trust I, due 2028 [Member] Class P [Member] | Mar. 31, 2014 Conversion of EP Trust I Preferred Securities [Member] | Mar. 31, 2013 Conversion of EP Trust I Preferred Securities [Member] | Apr. 17, 2014 Subsequent Event [Member] | Mar. 31, 2014 Kinder Morgan, Inc. [Member] Warrant [Member]
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock and or Warrant Repurchase Program, Authorized Amount | $ 100 | $ 250 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares, Outstanding |  |  |  |  |  |  | 1,027,904,172 | 1,035,731,820 | 1,030,677,076 | 1,035,668,596 |  |  |  |  |  |
Stock Repurchased and Retired During Period, Shares |  |  |  |  |  |  | (2,780,337) | 0 |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Conversion of Convertible Securities |  |  |  |  |  |  |  |  |  |  | 933 | 55,319 |  |  |  |
Restriced shares vested (in shares) |  |  |  |  |  |  | 6,500 | 7,905 |  |  |  |  |  |  |  |
Dividends Per Common Share Declared for the Period |  |  | $ 0.42 | $ 0.38 |  |  | $ 0.42 | $ 0.38 |  |  |  |  |  |  | $ 0.42 |
Common Stock, Dividends, Per Share, Cash Paid |  |  | $ 0.41 | $ 0.37 |  |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Outstanding |  |  | 316,889,310 | 422,924,637 | 347,933,107 | 439,809,442 |  |  |  |  |  |  |  |  |  |
Number of Warrants Repurchased |  |  | (31,045,227) | (16,969,361) |  |  |  |  |  |  |  |  |  |  |  |
Stock and Warrants Issued During Period Number of Warrants |  |  |  |  |  |  |  |  |  |  |  |  | 1,430 | 84,556 |  |
Debt Instrument, Convertible, Conversion Ratio |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Repurchase Program, Remaining Authorized Repurchase Amount |  |  | $ 45 |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 40

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