Risk Management Interest Rate Risk Managment (Details) (USD $)	12 Months Ended		1 Months Ended		12 Months Ended					12 Months Ended						12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Kinder Morgan Energy Partners, L.P. [Member]	Jun. 30, 2013 Kinder Morgan Energy Partners, L.P. [Member]	Dec. 31, 2013 Kinder Morgan Energy Partners, L.P. [Member] notches	Aug. 05, 2013 Senior notes due February 15, 2023 [Member]	Aug. 05, 2013 Senior notes due February 15, 2023 [Member] Kinder Morgan Energy Partners, L.P. [Member]	Aug. 05, 2013 4.15% Senior Notes due February 1, 2024 [Member] [Member]	Aug. 05, 2013 4.15% Senior Notes due February 1, 2024 [Member] [Member] Kinder Morgan Energy Partners, L.P. [Member]	Dec. 31, 2013 Scenario Number One [Member] notches	Dec. 31, 2013 fixed-to-variable interest rate swap agreement [Member] Kinder Morgan Energy Partners, L.P. [Member]	Aug. 31, 2013 fixed-to-variable interest rate swap agreement [Member] Kinder Morgan Energy Partners, L.P. [Member]	Dec. 31, 2012 fixed-to-variable interest rate swap agreement [Member] Kinder Morgan Energy Partners, L.P. [Member]	Dec. 31, 2013 Termination of Swap Agreement [Member] fixed-to-variable interest rate swap agreement [Member] Kinder Morgan Energy Partners, L.P. [Member]	Jun. 30, 2013 Termination of Swap Agreement [Member] fixed-to-variable interest rate swap agreement [Member] Kinder Morgan Energy Partners, L.P. [Member]	Dec. 31, 2013 OCI before Reclassifications [Member]	Dec. 31, 2013 Amounts reclassified from AOCI [Member]	Dec. 31, 2013 Two notch credit downgrade [Member] Kinder Morgan Energy Partners, L.P. [Member]
Derivative [Line Items]
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	$ 24,000,000	$ 66,000,000
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	(4,000,000)	132,000,000														(136,000,000)	0
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	13,000,000	(30,000,000)														43,000,000	0
Accumulated Other Comprehensive Income (Loss), Net of Tax	33,000,000	168,000,000														(153,000,000)	18,000,000
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax, Portion Attributable to Parent	(42,000,000)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent	(136,000,000)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax	43,000,000
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(135,000,000)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax																(60,000,000)	18,000,000
Number of Credit Rating Notches					2					1
Debt Instrument, Interest Rate, Stated Percentage						2.65%	2.65%	4.15%	4.15%
Proceeds from early termination of swaps				96,000,000
Derivative, Notional Amount											4,675,000,000	500,000,000	5,525,000,000	375,000,000	975,000,000
Number of Fixed-to-Variable Interest Rate Swap Agreements Terminated			3
Additional Collateral, Aggregate Fair Value																		$ 8,000,000