Debt Kinder Morgan G.P., Inc. Preferred Shares (Details) (USD $)	12 Months Ended		0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Jan. 21, 2015
Debt Instrument [Line Items]
Preferred stock, shares outstanding (in shares)	0	0
Kinder Morgan G.P., Inc. [Member]
Debt Instrument [Line Items]
Preferred stock, shares outstanding (in shares)	100,000
Preferred Stock, Dividends Per Share, Declared	$ 41.860	$ 42.101
Preferred Stock, Dividends, Per Share, Cash Paid	$ 41.877	$ 42.169
Subsequent Event [Member] | Kinder Morgan G.P., Inc. [Member]
Debt Instrument [Line Items]
Preferred Stock, Dividends Per Share, Declared			$ 10.553