Consolidated Statement of Equity and Partners' Capital (Parenthetical) (USD $)	6 Months Ended
	Jun. 30, 2013
WES equity transactions, net	$ 416,119,000	[1]
Common Units [Member]
WES equity transactions, net	116,232,000	[1]
Partners' Capital
Combined change in Partners' Capital from WES equity transactions, net and net income attributable to Western Gas Equity Partners, LP	$ 183,300,000

[1] Includes the impact of Western Gas Partners, LP’s May 2013 public equity offering and common units issued in connection with the acquisition of the Non-Operated Marcellus Interest as described in Note 4 and Note 2. The $116.2 million increase to partners’ capital, together with net income attributable to Western Gas Equity Partners, LP, totaled $183.3 million for the six months ended June 30, 2013.