Property, Plant and Equipment - Additional Information (details) (USD $)				3 Months Ended
	Jun. 30, 2014	Dec. 31, 2013		Jun. 30, 2014 Western Gas Partners [Member]	Mar. 31, 2014 Western Gas Partners [Member]	Jun. 30, 2014 Western Gas Partners [Member] Natural Gas Processing Plant [Member]	Mar. 31, 2014 Western Gas Partners [Member] Equipment [Member]
Property, Plant and Equipment [Line Items]
Unguaranteed residual value		$ 4,600,000
Property, plant and equipment	4,591,935,000	4,239,100,000	[1]			4,600,000
Impairment				300,000	1,200,000
Estimated Fair Value							$ 2,400,000

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