Consolidated Statements of Operations - WES Operating - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2021	Mar. 31, 2020
Revenues and Other
Revenues and other	[1]	$ 674,974	$ 774,313
Equity income, net – related parties		52,165	61,347
Operating expenses
Cost of product		88,969	103,270
Operation and maintenance		140,332	159,191
General and administrative		45,116	40,465
Property and other taxes		14,384	18,476
Depreciation and amortization		130,553	132,319
Long-lived asset and other impairments		14,866	155,785
Goodwill impairment		0	441,017
Total operating expenses	[2]	434,220	1,050,523
Gain (loss) on divestiture and other, net		(583)	(40)
Operating income (loss)		292,336	(214,903)
Interest income – Anadarko note receivable		0	4,225
Interest expense		(98,493)	(88,586)
Gain (loss) on early extinguishment of debt		(289)	7,345
Other income (expense), net		(1,207)	(1,761)
Income (loss) before income taxes		192,347	(293,680)
Income tax expense (benefit)		1,112	(4,280)
Net income (loss)		191,235	(289,400)
Net income (loss) attributable to noncontrolling interest		5,444	(32,873)
Net income (loss) attributable to Western Midstream Operating, LP		185,791	(256,527)
Service Revenues - Fee Based [Member]
Revenues and Other
Revenues and other		572,275	701,396
Service Revenues - Product Based [Member]
Revenues and Other
Revenues and other		31,652	15,921
Product Sales [Member]
Revenues and Other
Revenues and other		70,805	56,649
Other [Member]
Revenues and Other
Revenues and other		242	347
WES Operating [Member]
Revenues and Other
Revenues and other	[3]	674,974	774,313
Equity income, net – related parties		52,165	61,347
Operating expenses
Cost of product		88,969	103,270
Operation and maintenance		140,332	159,191
General and administrative		44,230	39,058
Property and other taxes		14,384	18,476
Depreciation and amortization		130,553	132,319
Long-lived asset and other impairments		14,866	155,785
Goodwill impairment		0	441,017
Total operating expenses	[4]	433,334	1,049,116
Gain (loss) on divestiture and other, net		(583)	(40)
Operating income (loss)		293,222	(213,496)
Interest income – Anadarko note receivable		0	4,225
Interest expense		(98,493)	(88,586)
Gain (loss) on early extinguishment of debt		(289)	7,345
Other income (expense), net		(1,210)	(1,763)
Income (loss) before income taxes		193,230	(292,275)
Income tax expense (benefit)		1,112	(4,280)
Net income (loss)		192,118	(287,995)
Net income (loss) attributable to noncontrolling interest		1,633	(27,665)
Net income (loss) attributable to Western Midstream Operating, LP		190,485	(260,330)
WES Operating [Member] | Service Revenues - Fee Based [Member]
Revenues and Other
Revenues and other		572,275	701,396
WES Operating [Member] | Service Revenues - Product Based [Member]
Revenues and Other
Revenues and other		31,652	15,921
WES Operating [Member] | Product Sales [Member]
Revenues and Other
Revenues and other		70,805	56,649
WES Operating [Member] | Other [Member]
Revenues and Other
Revenues and other		$ 242	$ 347

[1] Total revenues and other includes related-party amounts of $378.3 million and $482.4 million for the three months ended March 31, 2021 and 2020, respectively. See Note 6.

[2] Total operating expenses includes related-party amounts of $39.9 million and $132.6 million for the three months ended March 31, 2021 and 2020, respectively. See Note 6.

[3] Total revenues and other includes related-party amounts of $378.3 million and $482.4 million for the three months ended March 31, 2021 and 2020, respectively. See Note 6.

[4] Total operating expenses includes related-party amounts of $40.4 million and $132.5 million for the three months ended March 31, 2021 and 2020, respectively. See Note 6.