Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands		3 Months Ended			9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014		Sep. 30, 2015		Sep. 30, 2014
Revenues and Other
Total revenues and other		$ 385,101	$ 357,521	[1]	$ 1,190,082		$ 1,016,151	[1]
Equity income, net	[2],[3]	21,976	19,063	[1]	59,137	[4]	41,322	[1],[4]
Operating expenses
Cost of product	[5]	127,721	113,217	[1]	414,378		330,926	[1]
Operation and maintenance	[5]	80,633	67,489	[1]	218,640		184,023	[1]
General and administrative	[5]	10,059	9,116	[1]	30,848		28,193	[1]
Property and other taxes		8,355	6,793	[1]	25,679		21,343	[1]
Depreciation, amortization and impairments		65,688	47,277	[1]	201,941		134,667	[1]
Total operating expenses		292,456	243,892	[1]	891,486		699,152	[1]
Gain on divestiture, net		77,244	0		77,244		0	[1]
Operating income		191,865	132,692	[1]	434,977		358,321	[1]
Interest income – affiliates	[6]	4,225	4,225	[1]	12,675		12,675	[1]
Interest expense	[7]	(31,773)	(20,878)	[1]	(82,339)		(55,703)	[1]
Other income (expense), net		96	118	[1]	256		849	[1]
Income before income taxes		164,413	116,157	[1]	365,569		316,142	[1]
Income tax (benefit) expense		1,661	3,891	[1]	4,305		8,199	[1]
Net income		162,752	112,266	[1]	361,264		307,943	[1]
Net income attributable to noncontrolling interests		74,468	45,832	[1]	148,156		128,958	[1]
Net income attributable to Western Gas Equity Partners, LP		88,284	66,434	[1]	213,108		178,985	[1]
Limited partners' interest in net income:
Pre-acquisition net (income) loss allocated to Anadarko		0	(6,482)	[1]	(1,742)		(13,282)	[1]
Limited partners' interest in net income	[8]	88,284	59,952	[1]	211,366		165,703	[1]
Affiliates [Member]
Revenues and Other
Gathering, processing and transportation of natural gas and natural gas liquids		141,556	124,829	[1]	431,182		340,775	[1]
Natural gas, natural gas liquids and drip condensate sales		105,032	142,025	[1]	345,385		424,207	[1]
Other		870	2,778	[1]	1,172		4,349	[1]
Total revenues and other	[3]	247,458	269,632	[1]	777,739		769,331	[1]
Operating expenses
Cost of product	[3]	35,673	27,034		132,663		85,071
Operation and maintenance	[9]	17,662	15,583		50,534		44,961
General and administrative	[10]	7,875	7,214		23,154		21,786
Total operating expenses		61,210	49,831		206,351		151,818
Interest expense	[11]	(4,310)	0		(9,922)		0
Third Parties [Member]
Revenues and Other
Gathering, processing and transportation of natural gas and natural gas liquids		94,082	70,996	[1]	267,566		201,985	[1]
Natural gas, natural gas liquids and drip condensate sales		41,968	11,647	[1]	141,489		37,533	[1]
Other		1,593	5,246	[1]	3,288		7,302	[1]
Total revenues and other		137,643	87,889	[1]	412,343		246,820	[1]
Operating expenses
Interest expense		$ (27,463)	$ (20,878)		$ (72,417)		$ (55,703)
Limited Partner [Member]
Limited partners' interest in net income:
Net income per common unit - basic and diluted		$ 0.40	$ 0.27	[1]	$ 0.97		$ 0.76	[1]
Weighted-average common units outstanding - basic and diluted		218,914	218,903	[1]	218,912		218,903	[1]

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

[2] Income earned from equity investments is classified as affiliate. See Note 1.

[3] 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.

[4] Income earned on, distributions from and contributions to equity investments are classified as affiliate. See Note 1.

[5] Cost of product includes product purchases from Anadarko (as defined in Note 1) of $35.7 million and $132.7 million for the three and nine months ended September 30, 2015, respectively, and $27.0 million and $85.1 million for the three and nine months ended September 30, 2014, respectively. Operation and maintenance includes charges from Anadarko of $17.7 million and $50.5 million for the three and nine months ended September 30, 2015, respectively, and $15.6 million and $45.0 million for the three and nine months ended September 30, 2014, respectively. General and administrative includes charges from Anadarko of $7.9 million and $23.2 million for the three and nine months ended September 30, 2015, respectively, and $7.2 million and $21.8 million for the three and nine months ended September 30, 2014, respectively. See Note 5.

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

[7] Includes affiliate (as defined in Note 1) interest expense of $4.3 million and $9.9 million for the three and nine months ended September 30, 2015, respectively, and zero for each of the three and nine months ended September 30, 2014. See Note 2 and Note 9.

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

[9] 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.

[10] 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.

[11] For the three and nine months ended September 30, 2015, includes WES’s accretion expense recognized on the Deferred purchase price obligation - Anadarko for the acquisition of DBJV (see Note 2 and Note 9) and for the nine months ended September 30, 2015, includes interest expense recognized on the WGP working capital facility (see Note 9).