Consolidated Statements of Operations - WES Operating - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues and other
Revenues and other	[1]	$ 719,131	$ 671,755	$ 1,394,105	$ 1,446,068
Equity income, net – related parties		58,666	54,415	110,831	115,762
Operating expenses
Cost of product		78,044	18,602	167,013	121,872
Operation and maintenance		153,028	145,186	293,360	304,377
General and administrative		44,448	36,423	89,564	76,888
Property and other taxes		17,967	19,395	32,351	37,871
Depreciation and amortization		137,849	119,805	268,402	252,124
Long-lived asset and other impairments		12,738	10,150	27,604	165,935
Goodwill impairment		0	0	0	441,017
Total operating expenses	[2]	444,074	349,561	878,294	1,400,084
Gain (loss) on divestiture and other, net		1,225	(2,843)	642	(2,883)
Operating income (loss)		334,948	373,766	627,284	158,863
Interest income – Anadarko note receivable		0	4,225	0	8,450
Interest expense		(95,290)	(94,654)	(193,783)	(183,240)
Gain (loss) on early extinguishment of debt		0	1,395	(289)	8,740
Other income (expense), net		84	1,653	(1,123)	(108)
Income (loss) before income taxes		239,742	286,385	432,089	(7,295)
Income tax expense (benefit)		1,465	5,044	2,577	764
Net income (loss)		238,277	281,341	429,512	(8,059)
Net income (loss) attributable to noncontrolling interest		7,018	8,304	12,462	(24,569)
Net income (loss) attributable to Western Midstream Operating, LP		231,259	273,037	417,050	16,510
Service Revenues - Fee Based [Member]
Revenues and other
Revenues and other		618,985	642,628	1,191,260	1,344,024
Service Revenues - Product Based [Member]
Revenues and other
Revenues and other		27,803	7,000	59,455	22,921
Product Sales [Member]
Revenues and other
Revenues and other		72,256	21,736	143,061	78,385
Other [Member]
Revenues and other
Revenues and other		87	391	329	738
WES Operating [Member]
Revenues and other
Revenues and other	[3]	719,131	671,755	1,394,105	1,446,068
Equity income, net – related parties		58,666	54,415	110,831	115,762
Operating expenses
Cost of product		78,044	18,602	167,013	121,872
Operation and maintenance		153,028	145,186	293,360	304,377
General and administrative		42,848	35,242	87,078	74,300
Property and other taxes		17,967	19,395	32,351	37,871
Depreciation and amortization		137,849	119,805	268,402	252,124
Long-lived asset and other impairments		12,738	10,150	27,604	165,935
Goodwill impairment		0	0	0	441,017
Total operating expenses	[4]	442,474	348,380	875,808	1,397,496
Gain (loss) on divestiture and other, net		1,225	(2,843)	642	(2,883)
Operating income (loss)		336,548	374,947	629,770	161,451
Interest income – Anadarko note receivable		0	4,225	0	8,450
Interest expense		(95,290)	(94,654)	(193,783)	(183,240)
Gain (loss) on early extinguishment of debt		0	1,395	(289)	8,740
Other income (expense), net		82	1,651	(1,128)	(112)
Income (loss) before income taxes		241,340	287,564	434,570	(4,711)
Income tax expense (benefit)		1,465	5,044	2,577	764
Net income (loss)		239,875	282,520	431,993	(5,475)
Net income (loss) attributable to noncontrolling interest		2,264	2,706	3,897	(24,959)
Net income (loss) attributable to Western Midstream Operating, LP		237,611	279,814	428,096	19,484
WES Operating [Member] | Service Revenues - Fee Based [Member]
Revenues and other
Revenues and other		618,985	642,628	1,191,260	1,344,024
WES Operating [Member] | Service Revenues - Product Based [Member]
Revenues and other
Revenues and other		27,803	7,000	59,455	22,921
WES Operating [Member] | Product Sales [Member]
Revenues and other
Revenues and other		72,256	21,736	143,061	78,385
WES Operating [Member] | Other [Member]
Revenues and other
Revenues and other		$ 87	$ 391	$ 329	$ 738

[1] Total revenues and other includes related-party amounts of $415.4 million and $793.7 million for the three and six months ended June 30, 2021, respectively, and $473.4 million and $955.8 million for the three and six months ended June 30, 2020, respectively. See Note 6.

[2] Total operating expenses includes related-party amounts of $29.0 million and $68.8 million for the three and six months ended June 30, 2021, respectively, and $18.5 million and $151.1 million for the three and six months ended June 30, 2020, respectively. See Note 6.

[3] Total revenues and other includes related-party amounts of $415.4 million and $793.7 million for the three and six months ended June 30, 2021, respectively, and $473.4 million and $955.8 million for the three and six months ended June 30, 2020, respectively. See Note 6.

[4] Total operating expenses includes related-party amounts of $29.6 million and $69.9 million for the three and six months ended June 30, 2021, respectively, and $18.7 million and $151.1 million for the three and six months ended June 30, 2020, respectively. See Note 6.