Equity and Partners' Capital (Tables)

9 Months Ended

Sep. 30, 2017

Partners' Capital Notes [Abstract]

Partnership Interests Table

The following table summarizes WES’s common, Class C, Series A Preferred and general partner units issued during the nine months ended September 30, 2017:

	WES Common Units	WES Class C Units	WES Series A Preferred Units		WES General Partner Units	Total
Balance at December 31, 2016	130,671,970	12,358,123	21,922,831		2,583,068	167,535,992
PIK Class C units	—	619,510	—		—	619,510
Conversion of Series A Preferred units	21,922,831	—	(21,922,831	)	—	—
Long-Term Incentive Plan award vestings	7,304	—	—		—	7,304
Balance at September 30, 2017	152,602,105	12,977,633	—		2,583,068	168,162,806