CONSOLIDATED STATEMENTS OF INCOME (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues
Natural gas sales	$ 3,567	$ 2,535	$ 3,305
Services	5,239	4,135	3,050
Product sales and other	3,724	2,365	1,534
Total Revenues	12,530	9,035	7,889
Operating Costs, Expenses and Other
Costs of sales	5,207	3,029	3,278
Operations and maintenance	1,921	1,605	1,490
Depreciation, depletion and amortization	1,446	1,159	928
General and administrative	560	547	473
Taxes, other than income taxes	296	239	174
Other income, net	129	28	11
Total Operating Costs, Expenses and Other	9,301	6,551	6,332
Operating Income	3,229	2,484	1,557
Other Income (Expense)
Earnings from equity investments	297	295	224
Amortization of excess cost of equity investments	(10)	(7)	(7)
Interest, net	(855)	(683)	(513)
Gain (loss) on remeasurement of previously held equity investments to fair value (Note 3)	558	0	(167)
Gain on sale of investments in Express pipeline system (Note 3)	224	0	0
Other, net	42	20	18
Total Other Income (Expense)	256	(375)	(445)
Income from Continuing Operations Before Income Taxes	3,485	2,109	1,112
Income Tax Expense	(164)	(39)	(45)
Income from Continuing Operations	3,321	2,070	1,067
Discontinued Operations (Note 3)
Income from operations of FTC Natural Gas Pipelines disposal group	0	160	201
Loss on sale and the remeasurement of FTC Natural Gas Pipelines disposal group to fair value	4	829	0
(Loss) Income from Discontinued Operations	(4)	(669)	201
Net Income	3,317	1,401	1,268
Net Income Attributable to Noncontrolling Interests	(36)	(18)	(10)
Net Income Attributable to KMEP	3,281	1,383	1,258
Calculation of Limited Partners’ Interest in Net Income (Loss) Attributable to KMEP:
Income from Continuing Operations attributable to KMEP	3,285	2,045	1,059
Less: Pre-acquisition income from operations of drop-down asset groups allocated to General Partner	(19)	(67)	0
Add: Drop-down asset groups’ severance expense allocated to General Partner	11	9	0
Less: General Partner's remaining Interest	(1,708)	(1,410)	(1,173)
Limited Partners’ Interest	1,569	577	(114)
Add: Limited Partners’ Interest in Discontinued Operations			197
Add: Limited Partners' Interest in Discontinued Operations	(4)	(655)
Limited Partners’ Interest in Net Income (Loss)	$ 1,565	$ (78)	$ 83
Limited Partners’ Net Income (Loss) per Unit:
Income (Loss) from Continuing Operations	$ 3.77	$ 1.64	$ (0.35)
(Loss) Income from Discontinued Operations	$ (0.01)	$ (1.86)	$ 0.60
Net Income (Loss)	$ 3.76	$ (0.22)	$ 0.25
Weighted Average Number of Units Used in Computation of Limited Partners’ Net Income per Unit	416	351	326
Per Unit Cash Distribution Declared for the Period	$ 5.33	$ 4.98	$ 4.61