Condensed Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current Assets:
Cash and cash equivalents	$ 17	$ 53
Trade accounts receivable, net	99	115
Accrued revenues	141	107
Related party receivables	20	8
Derivative assets	10	4
Other current assets	58	53
Total current assets	345	340
Property, plant and equipment:
Property, plant and equipment	4,587	4,086
Less accumulated depreciation	(514)	(400)
Property, plant and equipment, net	4,073	3,686
Other Assets:
Investment in unconsolidated affiliates	2,224	2,214
Long-term derivative assets	3	1
Other, net of accumulated amortization of debt issuance costs of $20 and $17	52	42
Total other assets	2,279	2,257
Intangible assets, net of accumulated amortization of $91 and $74	696	712
Goodwill	1,128	1,128
TOTAL ASSETS	8,521	8,123
Current Liabilities:
Drafts payable	17	10
Trade accounts payable	140	122
Accrued cost of gas and liquids	135	133
Related party payables	43	95
Deferred revenues	16	17
Derivative liabilities	1	6
Other current liabilities	57	106
Total current liabilities	409	489
Long-term derivative liabilities	47	25
Other long-term liabilities	38	39
Long-term debt, net	2,935	2,157
Commitments and contingencies
Series A Preferred Units, redemption amount of $86 and $85	73	73
Partners’ capital and noncontrolling interest:
Common units	3,988	3,207
Common Stock, Other Value, Outstanding	143	0
General partner interest	798	326
Predecessor Equity	0	1,733
Accumulated other comprehensive loss	0	(3)
Total partners’ capital	4,929	5,263
Noncontrolling interest	90	77
Total partners’ capital and noncontrolling interest	5,019	5,340
TOTAL LIABILITIES AND PARTNERS’ CAPITAL AND NONCONTROLLING INTEREST	8,521	8,123
Class F Units [Member]
Partners’ capital and noncontrolling interest:
Total partners’ capital and noncontrolling interest	$ 143	$ 0