Reportable Segments Reportable Segment (Details 1) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	$ 3,933	$ 3,381	$ 11,162	$ 9,059
Segment Earnings Before Depreciation Depletion And Amortization	1,161	867	2,949	2,252
Depreciation, Depletion and Amortization	(427)	(377)	(1,234)	(1,062)
Amortization of excess cost of equity investments	(3)	(3)	(11)	(7)
General and Administrative Expense	(126)	(136)	(411)	(433)
Income Tax Expense (Benefit)	24	20	64	147
Loss from Discontinued Operations	0	0	0	(2)
Net Income	976	697	2,399	2,499
Natural Gas Pipelines [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	2,399	2,023	6,685	5,088
Segment Earnings Before Depreciation Depletion And Amortization	863	635	2,221	2,315
CO2 [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	508	456	1,445	1,345
Segment Earnings Before Depreciation Depletion And Amortization	388	340	1,083	1,040
Products Pipelines [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	520	474	1,578	1,371
Segment Earnings Before Depreciation Depletion And Amortization	222	202	633	399
Terminals [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	433	354	1,244	1,034
Segment Earnings Before Depreciation Depletion And Amortization	249	217	696	610
Kinder Morgan Canada [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	73	74	210	221
Segment Earnings Before Depreciation Depletion And Amortization	50	43	138	286
Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	3,933	3,381	11,165	9,060
Segment Earnings Before Depreciation Depletion And Amortization	1,772	1,437	4,771	4,650
Corporate Segment [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Interest Expense	238	220	708	637
Income Tax Expense (Benefit)	$ 2	$ 4	$ 8	$ 10