Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands		3 Months Ended			9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015		Sep. 30, 2016	Sep. 30, 2015
Revenues and Other
Total revenues and other		$ 481,645	$ 432,515	[1]	$ 1,293,450	$ 1,335,514	[1]
Equity income, net – affiliates	[2]	20,294	21,976	[1]	56,801	59,137	[1]
Operating expenses
Cost of product	[3]	145,643	127,704	[1]	326,959	414,328	[1]
Operation and maintenance	[3]	74,755	88,722	[1]	226,141	242,744	[1]
General and administrative	[3]	12,112	10,884	[1]	36,514	32,983	[1]
Property and other taxes		10,670	9,054	[1]	33,113	27,946	[1]
Depreciation and amortization		67,246	67,367	[1]	199,646	204,896	[1]
Impairments		2,392	2,335	[1]	11,313	276,579	[1]
Total operating expenses		312,818	306,066	[1]	833,686	1,199,476	[1]
Gain (loss) on divestiture and other, net		(6,230)	77,254	[1]	(8,769)	77,248	[1]
Proceeds from business interruption insurance claims		13,667	0	[1]	16,270	0	[1]
Operating income (loss)		196,558	225,679	[1]	524,066	272,423	[1]
Interest income – affiliates	[4]	4,225	4,225	[1]	12,675	12,675	[1]
Interest expense	[5]	(31,301)	(31,773)	[1]	(76,869)	(82,339)	[1]
Other income (expense), net		165	96	[1]	270	256	[1]
Income (loss) before income taxes		169,647	198,227	[1]	460,142	203,015	[1]
Income tax (benefit) expense		472	12,644	[1]	7,431	37,160	[1]
Net income (loss)		169,175	185,583	[1]	452,711	165,855	[1]
Net income (loss) attributable to noncontrolling interests		77,778	76,364	[1]	190,635	(14,643)	[1]
Net income (loss) attributable to Western Gas Equity Partners, LP		91,397	109,219	[1]	262,076	180,498	[1]
Limited partners' interest in net income (loss):
Pre-acquisition net (income) loss allocated to Anadarko		0	(19,848)	[1]	(11,326)	(63,606)	[1]
Limited partners' interest in net income (loss)	[6]	91,397	89,371	[1]	250,750	116,892	[1]
Affiliates [Member]
Revenues and Other
Gathering, processing and transportation		189,465	188,947	[1]	563,916	576,631	[1]
Natural gas and natural gas liquids sales		135,847	105,032	[1]	336,385	345,385	[1]
Other		0	870	[1]	0	1,172	[1]
Total revenues and other	[2]	325,312	294,849	[1]	900,301	923,188	[1]
Operating expenses
Cost of product	[2]	21,254	35,656		67,979	132,613
Operation and maintenance	[7]	15,052	19,394		50,688	56,065
General and administrative	[8]	9,655	8,700		28,179	25,289
Total operating expenses		45,961	63,750		146,846	213,967
Interest expense	[9]	1,173	(4,310)		12,097	(9,922)
Third Parties [Member]
Revenues and Other
Gathering, processing and transportation		125,727	94,082	[1]	346,416	267,566	[1]
Natural gas and natural gas liquids sales		28,189	41,968	[1]	43,200	141,489	[1]
Other		2,417	1,616	[1]	3,533	3,271	[1]
Total revenues and other		156,333	137,666	[1]	393,149	412,326	[1]
Operating expenses
Interest expense		$ (32,474)	$ (27,463)		$ (88,966)	$ (72,417)
Limited Partner [Member]
Limited partners' interest in net income (loss):
Net income (loss) per common unit - basic and diluted		$ 0.42	$ 0.41	[1]	$ 1.15	$ 0.53	[1]
Weighted-average common units outstanding - basic and diluted		218,922	218,914	[1]	218,921	218,912	[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 $21.3 million and $68.0 million for the three and nine months ended September 30, 2016, respectively, and $35.7 million and $132.6 million for the three and nine months ended September 30, 2015, respectively. Operation and maintenance includes charges from Anadarko of $15.1 million and $50.7 million for the three and nine months ended September 30, 2016, respectively, and $19.4 million and $56.1 million for the three and nine months ended September 30, 2015, respectively. General and administrative includes charges from Anadarko of $9.7 million and $28.2 million for the three and nine months ended September 30, 2016, respectively, and $8.7 million and $25.3 million for the three and nine months ended September 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 $1.2 million and $12.1 million for the three and nine months ended September 30, 2016, respectively, and $(4.3) million and $(9.9) million for the three and nine months ended September 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 nine months ended September 30, 2016, includes WES’s accretion revisions to the Deferred purchase price obligation - Anadarko (see Note 2 and Note 9) and for the nine months ended September 30, 2015, includes interest expense recognized on the WGP WCF (see Note 9).