CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash Flows From Operating Activities
Net income	$ 737	$ 789
Adjustments to reconcile net income to net cash provided by operating activities
Loss on remeasurement of FTC Natural Gas Pipelines disposal group to fair value	827	0
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain	0	167
Depreciation, depletion, and amortization	803	705
Amortization of excess cost of equity investments	5	5
Noncash compensation expense allocated from parent (Note 8)	0	90
Earnings from equity investments	(289)	(214)
Distributions from equity investments	277	201
Proceeds from termination of interest rate swap agreements	53	73
Changes in components of working capital
Accounts receivable	(40)	28
Inventories	(98)	9
Other current assets	13	(2)
Accounts payable	41	(9)
Cash book overdrafts	42	9
Accrued interest	(138)	(143)
Accrued taxes	74	47
Accrued liabilities	49	(2)
Rate reparations, refunds and other litigation reserve adjustments	(42)	161
Other, net	0	70
Net Cash Provided by Operating Activities	2,314	1,984
Cash Flows From Investing Activities
Payment to parent as consideration for assets dropped down	(3,482)	0
Acquisitions of assets and investments	(72)	(945)
Repayments from related party	42	29
Capital expenditures	(1,273)	(838)
Sale or casualty of property, plant and equipment, and other net assets, net of removal costs	36	29
(Investments in) Net proceeds from margin and restricted deposits	(16)	56
Contributions to equity investments	(155)	(297)
Distributions from equity investments in excess of cumulative earnings	120	165
Refined products, natural gas liquids and transmix line-fill	14	3
Payments for (Proceeds from) Other Investing Activities	0	1
Net Cash Used in Investing Activities	(4,786)	(1,797)
Cash Flows From Financing Activities
Issuance of debt	8,378	6,356
Payment of debt	(5,074)	(5,538)
Debt issue costs	(16)	(17)
Proceeds from issuance of common units	387	813
Proceeds from issuance of i-units	727	0
Contributions from noncontrolling interests	40	15
Common units	(847)	(762)
Class B units	(19)	(18)
General Partner	(970)	(859)
Noncontrolling interests	(23)	(20)
Proceeds from (Payments for) Other Financing Activities	(1)	0
Net Cash Used in Financing Activities	2,582	(30)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	13	(15)
Net increase in Cash and Cash Equivalents	123	142
Cash and Cash Equivalents, beginning of period	409	129
Cash and Cash Equivalents, end of period	532	271
Noncash Investing and Financing Activities
Net assets acquired in asset drop down	6,371	0
Assets acquired or liabilities settled by the issuance of common units	686	24
Assets acquired by the assumption or incurrence of liabilities	0	180
Contribution of net assets to investments	0	8
Sale of investment ownership interest in exchange for note	0	4
Supplemental Disclosures of Cash Flow Information
Cash paid during the period for interest (net of capitalized interest)	586	510
Net cash paid during the period for income taxes	$ 16	$ 9