Consolidated Statements of Operations - WES Operating - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues and other
Revenues and other	[1]	$ 2,877,155	$ 2,772,592	$ 2,746,174
Equity income, net – related parties		204,645	226,750	237,518
Operating expenses
Cost of product		322,285	188,088	444,247
Operation and maintenance		581,300	580,874	641,219
General and administrative		195,549	155,769	114,591
Property and other taxes		64,267	68,340	61,352
Depreciation and amortization		551,629	491,086	483,255
Long-lived asset and other impairments		30,543	203,889	6,279
Goodwill impairment		0	441,017	0
Total operating expenses	[2]	1,745,573	2,129,063	1,750,943
Gain (loss) on divestiture and other, net		44	8,634	(1,406)
Operating income (loss)		1,336,271	878,913	1,231,343
Interest income – Anadarko note receivable		0	11,736	16,900
Interest expense		(376,512)	(380,058)	(303,286)
Gain (loss) on early extinguishment of debt		(24,944)	11,234	0
Other income (expense), net	[3]	(623)	1,025	(123,785)
Income (loss) before income taxes		934,192	522,850	821,172
Income tax expense (benefit)		(9,807)	5,998	13,472
Net income (loss)		943,999	516,852	807,700
Net income (loss) attributable to noncontrolling interest		27,707	(10,160)	110,459
Net income (loss) attributable to Western Midstream Operating, LP		916,292	527,012	697,241
Pre-acquisition net (income) loss allocated to Anadarko		0	0	(29,279)
Limited partners' interest in net income (loss)	[4]	896,477	515,908	662,325
Service Revenues - Fee Based [Member]
Revenues and other
Revenues and other		2,462,835	2,584,323	2,388,191
Service Revenues - Product Based [Member]
Revenues and other
Revenues and other		122,584	48,369	70,127
Product Sales [Member]
Revenues and other
Revenues and other		290,947	138,559	286,388
Other [Member]
Revenues and other
Revenues and other		789	1,341	1,468
WES Operating [Member]
Revenues and other
Revenues and other	[5]	2,877,155	2,772,592	2,746,174
Equity income, net – related parties		204,645	226,750	237,518
Operating expenses
Cost of product		322,285	188,088	444,247
Operation and maintenance		581,300	580,874	641,219
General and administrative		192,617	152,217	107,772
Property and other taxes		64,267	68,340	61,352
Depreciation and amortization		551,629	491,086	483,255
Long-lived asset and other impairments		30,543	203,889	6,279
Goodwill impairment		0	441,017	0
Total operating expenses	[6]	1,742,641	2,125,511	1,744,124
Gain (loss) on divestiture and other, net		44	8,634	(1,406)
Operating income (loss)		1,339,203	882,465	1,238,162
Interest income – Anadarko note receivable		0	11,736	16,900
Interest expense		(376,512)	(380,058)	(303,041)
Gain (loss) on early extinguishment of debt		(24,944)	11,234	0
Other income (expense), net	[7]	(634)	1,008	(123,864)
Income (loss) before income taxes		937,113	526,385	828,157
Income tax expense (benefit)		(9,816)	5,998	13,472
Net income (loss)		946,929	520,387	814,685
Net income (loss) attributable to noncontrolling interest		8,942	(20,990)	7,095
Net income (loss) attributable to Western Midstream Operating, LP		937,987	541,377	807,590
Pre-acquisition net (income) loss allocated to Anadarko		0	0	(29,279)
Limited partners' interest in net income (loss)		937,987	541,377	778,311
WES Operating [Member] | Service Revenues - Fee Based [Member]
Revenues and other
Revenues and other		2,462,835	2,584,323	2,388,191
WES Operating [Member] | Service Revenues - Product Based [Member]
Revenues and other
Revenues and other		122,584	48,369	70,127
WES Operating [Member] | Product Sales [Member]
Revenues and other
Revenues and other		290,947	138,559	286,388
WES Operating [Member] | Other [Member]
Revenues and other
Revenues and other		$ 789	$ 1,341	$ 1,468

[1] Total revenues and other includes related-party amounts of $1.6 billion, $1.8 billion, and $1.6 billion for the years ended December 31, 2021, 2020, and 2019, respectively. See Note 6.

[2] Total operating expenses includes related-party amounts of $86.2 million, $182.7 million, and $503.2 million for the years ended December 31, 2021, 2020, and 2019, respectively. See Note 6.

[3] Other income (expense), net includes losses associated with the interest-rate swap agreements for the year ended December 31, 2019. See Note 13.

[4] See Note 5.

[5] Total revenues and other includes related-party amounts of $1.6 billion, $1.8 billion, and $1.6 billion for the years ended December 31, 2021, 2020, and 2019, respectively. See Note 6.

[6] Total operating expenses includes related-party amounts of $89.0 million, $184.0 million, and $501.4 million for the years ended December 31, 2021, 2020, and 2019, respectively. See Note 6.

[7] Other income (expense), net includes losses associated with the interest-rate swap agreements for the year ended December 31, 2019. See Note 13.