Consolidated Statements of Operations - WES Operating - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenues and other
Revenues and other	[1]	$ 763,840	$ 679,044	$ 2,157,945	$ 2,125,112
Equity income, net – related parties		48,506	61,026	159,337	176,788
Operating expenses
Cost of product		83,232	31,739	250,245	153,611
Operation and maintenance		140,838	132,293	434,198	436,670
General and administrative		50,409	41,578	139,973	118,466
Property and other taxes		13,641	19,392	45,992	57,263
Depreciation and amortization		139,002	132,564	407,404	384,688
Long-lived asset and other impairments		1,594	34,640	29,198	200,575
Goodwill impairment		0	0	0	441,017
Total operating expenses	[2]	428,716	392,206	1,307,010	1,792,290
Gain (loss) on divestiture and other, net		(364)	(768)	278	(3,651)
Operating income (loss)		383,266	347,096	1,010,550	505,959
Interest income – Anadarko note receivable		0	3,286	0	11,736
Interest expense		(93,257)	(95,571)	(287,040)	(278,811)
Gain (loss) on early extinguishment of debt		(24,655)	1,632	(24,944)	10,372
Other income (expense), net		110	720	(1,013)	612
Income (loss) before income taxes		265,464	257,163	697,553	249,868
Income tax expense (benefit)		1,826	3,028	4,403	3,792
Net income (loss)		263,638	254,135	693,150	246,076
Net income (loss) attributable to noncontrolling interest		7,913	7,524	20,375	(17,045)
Net income (loss) attributable to Western Midstream Operating, LP		255,725	246,611	672,775	263,121
Service Revenues - Fee Based [Member]
Revenues and other
Revenues and other		650,482	636,522	1,841,742	1,980,546
Service Revenues - Product Based [Member]
Revenues and other
Revenues and other		28,812	12,316	88,267	35,237
Product Sales [Member]
Revenues and other
Revenues and other		84,298	30,106	227,359	108,491
Other [Member]
Revenues and other
Revenues and other		248	100	577	838
WES Operating [Member]
Revenues and other
Revenues and other	[3]	763,840	679,044	2,157,945	2,125,112
Equity income, net – related parties		48,506	61,026	159,337	176,788
Operating expenses
Cost of product		83,232	31,739	250,245	153,611
Operation and maintenance		140,838	132,293	434,198	436,670
General and administrative		50,689	41,483	137,767	115,783
Property and other taxes		13,641	19,392	45,992	57,263
Depreciation and amortization		139,002	132,564	407,404	384,688
Long-lived asset and other impairments		1,594	34,640	29,198	200,575
Goodwill impairment		0	0	0	441,017
Total operating expenses	[4]	428,996	392,111	1,304,804	1,789,607
Gain (loss) on divestiture and other, net		(364)	(768)	278	(3,651)
Operating income (loss)		382,986	347,191	1,012,756	508,642
Interest income – Anadarko note receivable		0	3,286	0	11,736
Interest expense		(93,257)	(95,571)	(287,040)	(278,811)
Gain (loss) on early extinguishment of debt		(24,655)	1,632	(24,944)	10,372
Other income (expense), net		106	718	(1,022)	606
Income (loss) before income taxes		265,180	257,256	699,750	252,545
Income tax expense (benefit)		1,823	3,028	4,400	3,792
Net income (loss)		263,357	254,228	695,350	248,753
Net income (loss) attributable to noncontrolling interest		2,699	2,488	6,596	(22,471)
Net income (loss) attributable to Western Midstream Operating, LP		260,658	251,740	688,754	271,224
WES Operating [Member] | Service Revenues - Fee Based [Member]
Revenues and other
Revenues and other		650,482	636,522	1,841,742	1,980,546
WES Operating [Member] | Service Revenues - Product Based [Member]
Revenues and other
Revenues and other		28,812	12,316	88,267	35,237
WES Operating [Member] | Product Sales [Member]
Revenues and other
Revenues and other		84,298	30,106	227,359	108,491
WES Operating [Member] | Other [Member]
Revenues and other
Revenues and other		$ 248	$ 100	$ 577	$ 838

[1] Total revenues and other includes related-party amounts of $431.7 million and $1.2 billion for the three and nine months ended September 30, 2021, respectively, and $455.6 million and $1.4 billion for the three and nine months ended September 30, 2020, respectively. See Note 6.

[2] Total operating expenses includes related-party amounts of $22.7 million and $91.5 million for the three and nine months ended September 30, 2021, respectively, and $10.4 million and $161.5 million for the three and nine months ended September 30, 2020, respectively. See Note 6.

[3] Total revenues and other includes related-party amounts of $431.7 million and $1.2 billion for the three and nine months ended September 30, 2021, respectively, and $455.6 million and $1.4 billion for the three and nine months ended September 30, 2020, respectively. See Note 6.

[4] Total operating expenses includes related-party amounts of $23.7 million and $93.6 million for the three and nine months ended September 30, 2021, respectively, and $11.1 million and $162.2 million for the three and nine months ended September 30, 2020, respectively. See Note 6.