CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Revenues
Natural gas sales	$ 2,514	$ 3,305	$ 3,571
Services	3,637	2,942	2,837
Product sales and other	2,491	1,642	1,331
Total Revenues	8,642	7,889	7,739
Operating Costs, Expenses and Other
Gas purchases and other costs of sales	2,990	3,278	3,499
Operations and maintenance	1,531	1,490	1,366
Depreciation, depletion and amortization	1,093	928	879
General and administrative	493	473	375
Taxes, other than income taxes	223	174	160
Other expense (income)	(28)	(11)	0
Total Operating Costs, Expenses and Other	6,302	6,332	6,279
Operating Income	2,340	1,557	1,460
Other Income (Expense)
Earnings from equity investments	339	224	136
Amortization of excess cost of equity investments	(7)	(7)	(6)
Interest expense	(658)	(534)	(508)
Interest income	23	21	20
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain (Loss), Net	0	(167)	0
Other, net	18	18	24
Total Other Income (Expense)	(285)	(445)	(334)
Income from Continuing Operations Before Income Taxes	2,055	1,112	1,126
Income Tax (Expense) Benefit	(30)	(45)	(34)
Income from Continuing Operations	2,025	1,067	1,092
Discontinued operations (Note 2)
Income from operations of FTC Natural Gas Pipelines disposal group	160	201	235
Loss on remeasurement of FTC Natural Gas Pipelines disposal group to fair value	(829)	0	0
Income (Loss) from Discontinued Operations	(669)	201	235
Net Income	1,356	1,268	1,327
Net Income Attributable to Noncontrolling Interests	(17)	(10)	(11)
Net Income Attributable to Kinder Morgan Energy Partners, L.P.	1,339	1,258	1,316
Attributable to Kinder Morgan Energy Partners, L.P.:
Income from Continuing Operations	2,001	1,059	1,083
Pre-acquisition income from operations of drop-down asset group allocated to General Partner	(23)	0	0
Drop-down severance expenses allocated to General Partner	9	0	0
Less: General Partner’s Interest	(1,410)	(1,173)	(883)
Limited Partners’ Interest	577	(114)	200
Add: Limited Partners’ Interest in Discontinued Operations	(655)	197	231
Limited Partners’ Interest in Net Loss	$ (78)	$ 83	$ 431
Limited Partners’ Net Income (Loss) per Unit:
Income (Loss) from Continuing Operations	1.64	(0.35)	0.65
Income (Loss) from Discontinued Operations	(1.86)	0.60	0.75
Net Loss	(0.22)	0.25	1.40
Weighted Average Number of Units Used in Computation of Limited Partners’ Net Income (Loss) per Unit	351	326	307
Per Unit Cash Distribution Declared (usd per share)	$ 4.98	$ 4.61	$ 4.40