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Consolidated Statement of Equity and Partners' Capital (Parenthetical) (USD $)	9 Months Ended
	Sep. 30, 2014
Deferred taxes on capitalized interest	$ (38,160,000)
Capital Units [Member]
Combined change in Partners' Capital from WES equity transactions, net and net income attributable to Western Gas Equity Partners, LP	184,200,000
Net Investment by Anadarko [Member]
Deferred taxes on capitalized interest	(38,160,000)
Capitalized Interest [Member] \| Net Investment by Anadarko [Member]
Deferred taxes on capitalized interest	$ 300,000

Amount of other deferred income tax expense (benefit) pertaining to income (loss) from continuing operations. For example, but not limited to, acquisition-date income tax benefits or expenses recognized from changes in the acquirer's valuation allowance for its previously existing deferred tax assets resulting from a business combination and adjustments to beginning-of-year balance of a valuation allowance because of a change in circumstance causing a change in judgment about the realizability of the related deferred tax asset in future periods.

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