Reportable Segments Reportable Segments (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Segment Reporting, Asset Reconciling Item [Line Items]
(Gain) loss from the remeasurement of of net assets to fair value		$ 0	$ 558
Rate Reparations Refunds And Other Litigation and Environmental Reserve Adjustment, Expense Portion	162		177
Assets		44,551		42,764
Natural Gas Pipelines [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets		25,704		25,721
CO2 [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets		3,039		2,954
Products Pipelines [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets		5,782		5,488
Terminals [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets		7,592		6,124
Kinder Morgan Canada [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets		1,690		1,678
Operating Segments [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets		43,807		41,965
Corporate Segment [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets		$ 744		$ 799