Property, Plant and Equipment Table (details) (USD $) In Thousands, unless otherwise specified								6 Months Ended				6 Months Ended						6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013		Jun. 30, 2014 Western Gas Partners [Member] Land [Member]	Dec. 31, 2013 Western Gas Partners [Member] Land [Member]	Jun. 30, 2014 Western Gas Partners [Member] Gathering Systems [Member]	Dec. 31, 2013 Western Gas Partners [Member] Gathering Systems [Member]	Jun. 30, 2014 Western Gas Partners [Member] Gathering Systems [Member] Minimum [Member]	Jun. 30, 2014 Western Gas Partners [Member] Gathering Systems [Member] Maximum [Member]	Jun. 30, 2014 Western Gas Partners [Member] Pipelines And Equipment [Member]	Dec. 31, 2013 Western Gas Partners [Member] Pipelines And Equipment [Member]	Jun. 30, 2014 Western Gas Partners [Member] Pipelines And Equipment [Member] Minimum [Member]	Jun. 30, 2014 Western Gas Partners [Member] Pipelines And Equipment [Member] Maximum [Member]	Jun. 30, 2014 Western Gas Partners [Member] Assets Under Construction [Member]	Dec. 31, 2013 Western Gas Partners [Member] Assets Under Construction [Member]	Jun. 30, 2014 Western Gas Partners [Member] Other [Member]	Dec. 31, 2013 Western Gas Partners [Member] Other [Member]	Jun. 30, 2014 Western Gas Partners [Member] Other [Member] Minimum [Member]	Jun. 30, 2014 Western Gas Partners [Member] Other [Member] Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 4,591,935	$ 4,239,100	[1]	$ 2,584	$ 2,584	$ 4,123,786	$ 3,673,008			$ 145,799	$ 146,008			$ 304,854	$ 405,633	$ 14,912	$ 11,867
Accumulated depreciation	936,568	855,845	[1]
Net property, plant and equipment	$ 3,655,367	$ 3,383,255	[1]
Estimated useful life								3 years	47 years			15 years	45 years					3 years	40 years

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