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Partnership Distributions - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended 9 Months Ended
Mar. 14, 2016
Apr. 30, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2016
Distribution Made to Limited Partner [Line Items]              
Partnership agreement day requirement of distribution of available cash             55 days
Western Gas Partners, LP [Member]              
Distribution Made to Limited Partner [Line Items]              
Partnership agreement day requirement of distribution of available cash             45 days
Units issued             748,562
Western Gas Partners, LP [Member] | Private Investor [Member] | Over-Allotment Option [Member]              
Distribution Made to Limited Partner [Line Items]              
Units issued             7,892,220
Western Gas Partners, LP [Member] | Class C Units [Member]              
Distribution Made to Limited Partner [Line Items]              
Discount rate percentage             6.00%
PIK Class C units       214,416 210,562 323,584  
Units issued             748,562
Western Gas Partners, LP [Member] | Series A Preferred Units [Member]              
Distribution Made to Limited Partner [Line Items]              
Series A Preferred units quarterly distribution per unit             $ 0.68
Series A Preferred units quarterly cash distribution     $ 14.9 $ 14.1 $ 1.9    
Number of days in prorated period       77 days 18 days    
Western Gas Partners, LP [Member] | Series A Preferred Units [Member] | Private Investor [Member]              
Distribution Made to Limited Partner [Line Items]              
Units issued 14,030,611       14,030,611    
Western Gas Partners, LP [Member] | Series A Preferred Units [Member] | Private Investor [Member] | Over-Allotment Option [Member]              
Distribution Made to Limited Partner [Line Items]              
Units issued   7,892,220   7,892,220     7,892,220