CONSOLIDATED STATEMENTS OF PARTNERS' CAPITAL Statement (USD $) In Millions, except Share data, unless otherwise specified	Total	Accumulated other comprehensive income (loss)	Noncontrolling interests	Common units	Class B units	i-units	General partner
Beginning Balance at Dec. 31, 2012	$ 168	$ 168
Beginning Balance, Amount at Dec. 31, 2012			267	4,723	14	3,564	4,026
Beginning Balance, Units at Dec. 31, 2012				252,756,425	5,313,400	115,118,338
Net income, Amount	2,472			841	16	345	1,270
Net Income, Noncontrolling interests Amount	27		27
Units issued as consideration in the acquisition of assets, Units				44,620,662
Units issued as consideration in the acquisition of assets, Amount				3,841
Units issued for cash, Units				12,847,743		1,757,300
Units issued for cash, Amount				1,080		145
Contributions, Amount							38
Contributions, Noncontrolling interests	128		128
Distribution, Units						5,411,720
Distributions, Amount	(2,332)			(1,068)	(21)	0	(1,213)
Distributions, Noncontrolling interests Amount			(30)
Acquisitions, Amount			(7)				(1,057)
Reimbursed severance expense allocated from KMI, Amount							7
Accumulated other comprehensive income (loss):
Other comprehensive Ioss		(97)	(1)
Other, Amount			0	(1)		0	2
Total Partners' Capital, Amount at Sep. 30, 2013	17,021
Ending Balance, Amount at Sep. 30, 2013	16,623		398	9,416	9	4,054	3,073
Ending Balance at Sep. 30, 2013	71	71
Ending Balance, Units at Sep. 30, 2013	437,825,588			310,224,830	5,313,400	122,287,358
Beginning Balance at Dec. 31, 2013	33	33
Beginning Balance, Amount at Dec. 31, 2013	16,801		420	9,459	6	4,222	3,081
Beginning Balance, Units at Dec. 31, 2013				312,791,561	5,313,400	125,323,734
Net income, Amount	2,370			690	12	280	1,388
Net Income, Noncontrolling interests Amount	29		29
Units issued as consideration in the acquisition of assets, Units				0
Units issued as consideration in the acquisition of assets, Amount				0
Units issued for cash, Units				13,448,424		1,734,513
Units issued for cash, Amount				1,044		134
Contributions, Amount							0
Contributions, Noncontrolling interests	94		94
Distribution, Units						6,907,981
Distributions, Amount	(2,757)			(1,321)	(22)	0	(1,375)
Distributions, Noncontrolling interests Amount			(39)
Acquisitions, Amount			0				0
Reimbursed severance expense allocated from KMI, Amount							5
Accumulated other comprehensive income (loss):
Other comprehensive Ioss		(86)	(1)
Other, Amount			(7)	4		1	0
Total Partners' Capital, Amount at Sep. 30, 2014	18,051
Ending Balance, Amount at Sep. 30, 2014	17,555		496	9,876	(4)	4,637	3,099
Ending Balance at Sep. 30, 2014	$ (53)	$ (53)
Ending Balance, Units at Sep. 30, 2014	465,519,613			326,239,985	5,313,400	133,966,228