Property, Plant and Equipment - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2015		Jun. 30, 2014	[2]	Jun. 30, 2015		Jun. 30, 2014	[2],[4]
Property, Plant and Equipment [Line Items]
Impairments	$ 1,268	[1]	$ 343		$ 273,892	[1],[3]	$ 1,533
Western Gas Partners, LP [Member]
Property, Plant and Equipment [Line Items]
Impairments					273,900
Western Gas Partners, LP [Member] | Red Desert Complex [Member]
Property, Plant and Equipment [Line Items]
Impairments					264,400
Western Gas Partners, LP [Member] | Red Desert Complex [Member] | Fair Value Measurements Nonrecurring [Member] | Level 3 Inputs [Member] | Income Approach Valuation Technique [Member]
Property, Plant and Equipment [Line Items]
Estimated fair value	$ 23,200				23,200
Western Gas Partners, LP [Member] | Other [Member]
Property, Plant and Equipment [Line Items]
Impairments					$ 9,500

[1] “As Reported” amounts previously included as a component of Depreciation, amortization and impairments in WGP’s Original Filing.

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

[3] “As Reported” amounts previously included as a component of Depreciation, amortization and impairments in WGP’s Original Filing.

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