Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands		3 Months Ended			6 Months Ended
		Jun. 30, 2016	Jun. 30, 2015		Jun. 30, 2016	Jun. 30, 2015
Revenues and Other
Total revenues and other		$ 428,664	$ 465,993	[1]	$ 811,805	$ 902,999	[1]
Equity income, net – affiliates	[2]	19,693	18,941	[1]	36,507	37,161	[1]
Operating expenses
Cost of product	[3]	104,849	147,216	[1]	181,316	286,624	[1]
Operation and maintenance	[3]	75,173	77,837	[1]	151,386	154,022	[1]
General and administrative	[3]	11,887	10,183	[1]	24,402	22,099	[1]
Property and other taxes		12,093	9,612	[1]	22,443	18,892	[1]
Depreciation and amortization		67,305	68,554	[1]	132,400	137,529	[1]
Impairments		2,403	1,620	[1]	8,921	274,244	[1]
Total operating expenses		273,710	315,022	[1]	520,868	893,410	[1]
Gain (loss) on divestiture and other, net		(1,907)	0	[1]	(2,539)	(6)	[1]
Proceeds from business interruption insurance claims		2,603	0	[1]	2,603	0	[1]
Operating income (loss)		175,343	169,912	[1]	327,508	46,744	[1]
Interest income – affiliates	[4]	4,225	4,225	[1]	8,450	8,450	[1]
Interest expense	[5]	(13,429)	(27,604)	[1]	(45,568)	(50,566)	[1]
Other income (expense), net		(36)	80	[1]	105	160	[1]
Income (loss) before income taxes		166,103	146,613	[1]	290,495	4,788	[1]
Income tax (benefit) expense		326	12,246	[1]	6,959	24,516	[1]
Net income (loss)		165,777	134,367	[1]	283,536	(19,728)	[1]
Net income (loss) attributable to noncontrolling interests		76,914	46,716	[1]	112,857	(91,007)	[1]
Net income (loss) attributable to Western Gas Equity Partners, LP		88,863	87,651	[1]	170,679	71,279	[1]
Limited partners' interest in net income (loss):
Pre-acquisition net (income) loss allocated to Anadarko		0	(18,719)	[1]	(11,326)	(43,758)	[1]
Limited partners' interest in net income (loss)	[6]	88,863	68,932	[1]	159,353	27,521	[1]
Affiliates [Member]
Revenues and Other
Gathering, processing and transportation		186,733	199,666	[1]	374,451	387,684	[1]
Natural gas and natural gas liquids sales		115,672	121,613	[1]	200,538	240,353	[1]
Other		0	132	[1]	0	302	[1]
Total revenues and other	[2]	302,405	321,411	[1]	574,989	628,339	[1]
Operating expenses
Cost of product	[2]	22,145	53,062		46,725	96,957
Operation and maintenance	[7]	17,661	19,854		35,636	36,671
General and administrative	[8]	9,374	8,254		18,524	16,589
Total operating expenses		49,180	81,170		100,885	150,217
Interest expense	[9]	15,461	(4,190)		10,924	(5,612)
Third Parties [Member]
Revenues and Other
Gathering, processing and transportation		114,403	91,234	[1]	220,689	173,484	[1]
Natural gas and natural gas liquids sales		11,321	52,589	[1]	15,011	99,521	[1]
Other		535	759	[1]	1,116	1,655	[1]
Total revenues and other		126,259	144,582	[1]	236,816	274,660	[1]
Operating expenses
Interest expense		$ (28,890)	$ (23,414)		$ (56,492)	$ (44,954)
Limited Partner [Member]
Limited partners' interest in net income (loss):
Net income (loss) per common unit - basic and diluted		$ 0.41	$ 0.31	[1]	$ 0.73	$ 0.13	[1]
Weighted-average common units outstanding - basic and diluted		218,921	218,912	[1]	218,920	218,911	[1]

[1] Financial information has been recast to include the financial position and results attributable to the Springfield interest. See Note 1 and Note 2.

[2] Represents amounts earned or incurred on and subsequent to the date of acquisition of WES assets, as well as amounts earned or incurred by Anadarko on a historical basis related to WES assets prior to the acquisition of such assets by WES, recognized under gathering, treating or processing agreements, and purchase and sale agreements.

[3] Cost of product includes product purchases from Anadarko (as defined in Note 1) of $22.1 million and $46.7 million for the three and six months ended June 30, 2016, respectively, and $53.1 million and $97.0 million for the three and six months ended June 30, 2015, respectively. Operation and maintenance includes charges from Anadarko of $17.7 million and $35.6 million for the three and six months ended June 30, 2016, respectively, and $19.9 million and $36.7 million for the three and six months ended June 30, 2015, respectively. General and administrative includes charges from Anadarko of $9.4 million and $18.5 million for the three and six months ended June 30, 2016, respectively, and $8.3 million and $16.6 million for the three and six months ended June 30, 2015, respectively. See Note 5.

[4] Represents interest income recognized on the note receivable from Anadarko.

[5] Includes affiliate (as defined in Note 1) amounts of $(15.5) million and $(10.9) million for the three and six months ended June 30, 2016, respectively, and $4.2 million and $5.6 million for the three and six months ended June 30, 2015, respectively. See Note 2 and Note 9.

[6] Represents net income (loss) earned on and subsequent to the date of acquisition of WES assets (as defined in Note 1). See Note 4.

[7] Represents expenses incurred on and subsequent to the date of the acquisition of WES assets, as well as expenses incurred by Anadarko on a historical basis related to WES assets prior to the acquisition of such assets by WES.

[8] Represents general and administrative expense incurred on and subsequent to the date of WES’s acquisition of WES assets, as well as a management services fee for reimbursement of expenses incurred by Anadarko for periods prior to the acquisition of WES assets by WES. These amounts include equity-based compensation expense allocated to WES and WGP by Anadarko (see WES LTIP and WGP LTIP and Anadarko Incentive Plans within this Note 5) and amounts charged by Anadarko under the WGP omnibus agreement.

[9] For the three and six months ended June 30, 2016, includes WES’s accretion revisions to the Deferred purchase price obligation - Anadarko (see Note 2 and Note 9) and for the three and six months ended June 30, 2015, includes interest expense recognized on the WGP WCF (see Note 9).