Reportable Segments Reportable Segments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Segment Reporting, Revenue Reconciling Item [Line Items]
Total Revenues	$ 3,577	$ 3,017	$ 7,229	$ 5,678
Depreciation, depletion and amortization	(406)	(357)	(807)	(685)
Natural Gas Pipelines [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Segment Earnings Before Depreciation Depletion And Amortization	639	1,123	1,358	1,680
Total Revenues	2,111	1,696	4,286	3,065
CO2 [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Segment Earnings Before Depreciation Depletion And Amortization	332	358	695	700
Total Revenues	454	460	937	889
Products Pipelines [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Segment Earnings Before Depreciation Depletion And Amortization	203	12	411	197
Total Revenues	524	443	1,058	897
Terminals [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Segment Earnings Before Depreciation Depletion And Amortization	233	207	447	393
Total Revenues	420	343	811	680
Kinder Morgan Canada [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Segment Earnings Before Depreciation Depletion And Amortization	40	50	88	243
Total Revenues	68	75	137	147
Operating Segments [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Segment Earnings Before Depreciation Depletion And Amortization	1,447	1,750	2,999	3,213
Total Revenues	3,579	3,018	7,232	5,679
Intersegment Eliminations [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total Revenues	(2)	(1)	(3)	(1)
Intersegment Revenues [Member] | Natural Gas Pipelines [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total Revenues	1	0	2	0
Intersegment Revenues [Member] | Terminals [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total Revenues	$ 1	$ 1	$ 1	$ 1