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Property, Plant and Equipment Table (details) (USD $)
In Thousands, unless otherwise specified
9 Months Ended 9 Months Ended 9 Months Ended
Sep. 30, 2014
Dec. 31, 2013
Sep. 30, 2014
Western Gas Partners [Member]
Land [Member]
Dec. 31, 2013
Western Gas Partners [Member]
Land [Member]
Sep. 30, 2014
Western Gas Partners [Member]
Gathering Systems [Member]
Dec. 31, 2013
Western Gas Partners [Member]
Gathering Systems [Member]
Sep. 30, 2014
Western Gas Partners [Member]
Gathering Systems [Member]
Minimum [Member]
Sep. 30, 2014
Western Gas Partners [Member]
Gathering Systems [Member]
Maximum [Member]
Sep. 30, 2014
Western Gas Partners [Member]
Pipelines And Equipment [Member]
Dec. 31, 2013
Western Gas Partners [Member]
Pipelines And Equipment [Member]
Sep. 30, 2014
Western Gas Partners [Member]
Pipelines And Equipment [Member]
Minimum [Member]
Sep. 30, 2014
Western Gas Partners [Member]
Pipelines And Equipment [Member]
Maximum [Member]
Sep. 30, 2014
Western Gas Partners [Member]
Assets Under Construction [Member]
Dec. 31, 2013
Western Gas Partners [Member]
Assets Under Construction [Member]
Sep. 30, 2014
Western Gas Partners [Member]
Other [Member]
Dec. 31, 2013
Western Gas Partners [Member]
Other [Member]
Sep. 30, 2014
Western Gas Partners [Member]
Other [Member]
Minimum [Member]
Sep. 30, 2014
Western Gas Partners [Member]
Other [Member]
Maximum [Member]
Property, Plant and Equipment [Line Items]                                    
Property, plant and equipment $ 4,754,279 $ 4,239,100 [1] $ 2,584 $ 2,584 $ 4,244,640 $ 3,673,008     $ 145,851 $ 146,008     $ 345,799 $ 405,633 $ 15,405 $ 11,867    
Accumulated depreciation 986,692 855,845 [1]                                
Net property, plant and equipment $ 3,767,587 $ 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.