Condensed Consolidated Statements Of Operations (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
REVENUES
Gas sales, including related party amounts of $8 and $13	$ 374	$ 335
NGL sales, including related party amounts of $123 and $50	254	331
Gathering, transportation and other fees, including related party amounts of $5 and $6	315	172
Net realized and unrealized gain (loss) from derivatives	11	(13)
Other	45	38
Total revenues	999	863
OPERATING COSTS AND EXPENSES
Cost of sales, including related party amounts of $19 and $10	641	638
Operation and maintenance	133	78
General and administrative	36	33
Gain on asset sales, net	0	(2)
Depreciation, depletion and amortization	158	94
Total operating costs and expenses	968	841
OPERATING INCOME	31	22
Income from unconsolidated affiliates	50	43
Interest expense, net	(82)	(56)
Other income and deductions, net	3	2
INCOME BEFORE INCOME TAXES	2	11
Income tax expense (benefit)	5	(1)
NET (LOSS) INCOME	(3)	12
Net income attributable to noncontrolling interest	(4)	(3)
NET (LOSS) INCOME ATTRIBUTABLE TO REGENCY ENERGY PARTNERS LP	(7)	9
Amounts attributable to Series A Preferred Units	1	1
General partner’s interest, including IDRs	0	5
Beneficial conversion feature for Class F units	2	2
Limited partners’ interest in net (loss) income	(10)	1
Basic and diluted net (loss) income per common unit:
Weighted average number of common units outstanding	410,670,934	226,046,232
Basic (loss) income per common unit	$ (0.02)	$ 0.00
Diluted (loss) income per common unit	$ (0.02)	$ 0.00
Distributions per common unit	$ 0.00	$ 0.48
Amount allocated to Class F units due to beneficial conversion feature	$ 2	$ 2
Income per Class F unit due to beneficial conversion feature	$ 0.27	$ 0.27
SUGS [Member]
Basic and diluted net (loss) income per common unit:
Total number of Class F units outstanding	6,274,483	6,274,483