Consolidated Statements of Equity and Partners' Capital (Parenthetical) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
WES Operating equity transactions, net	[1]	$ 0	$ 0	$ (183)
Combined change in Partners' Capital from WES Operating equity transactions, net and net income (loss) attributable to Western Midstream Partners, LP		(58,000)	532,000	547,400
Common Units [Member]
WES Operating equity transactions, net	[1]	$ (755,197)	$ (19,577)	$ 6,615

[1] For the years ended December 31, 2019, 2018, and 2017, the $(755.2) million, $(19.6) million, and $6.6 million increase (decrease) to partners’ capital, respectively, together with net income (loss) attributable to Western Midstream Partners, LP, totaled $(58.0) million, $532.0 million, and $547.4 million, respectively.