Western Midstream Partners 10-Q 3 Aug 22 2022 Q2 Quarterly report Financial data

Cover Page

Cover Page - shares	6 Months Ended
	Jun. 30, 2022	Jul. 29, 2022
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2022
Document Transition Report	false
Entity Registrant Name	WESTERN MIDSTREAM PARTNERS, LP
Entity File Number	001-35753
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	46-0967367
Entity Address, Address Line One	9950 Woodloch Forest Drive, Suite 2800
Entity Address, City or Town	The Woodlands,
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77380
City Area Code	(346)
Local Phone Number	786-5000
Title of 12(b) Security	Common units
Trading Symbol	WES
Security Exchange Name	NYSE
Entity Common Units Outstanding		386,450,080
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0001423902
Amendment Flag	false
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--12-31
WES Operating [Member]
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2022
Document Transition Report	false
Entity Registrant Name	WESTERN MIDSTREAM OPERATING, LP
Entity File Number	001-34046
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	26-1075808
Entity Address, Address Line One	9950 Woodloch Forest Drive, Suite 2800
Entity Address, City or Town	The Woodlands,
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77380
City Area Code	(346)
Local Phone Number	786-5000
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0001414475
Amendment Flag	false
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--12-31

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenues and other
Revenues and other	[1]	$ 876,419	$ 719,131	$ 1,634,716	$ 1,394,105
Equity income, net – related parties		48,464	58,666	98,071	110,831
Operating expenses
Cost of product		148,556	78,044	221,404	167,013
Operation and maintenance		168,153	153,028	297,129	293,360
General and administrative		47,848	44,448	96,450	89,564
Property and other taxes		22,662	17,967	41,104	32,351
Depreciation and amortization		139,036	137,849	273,618	268,402
Long-lived asset and other impairments		90	12,738	90	27,604
Total operating expenses	[2]	526,345	444,074	929,795	878,294
Gain (loss) on divestiture and other, net		(1,150)	1,225	(780)	642
Operating income (loss)		397,388	334,948	802,212	627,284
Interest expense		(80,772)	(95,290)	(166,227)	(193,783)
Gain (loss) on early extinguishment of debt		91	0	91	(289)
Other income (expense), net		(45)	84	61	(1,123)
Income (loss) before income taxes		316,662	239,742	636,137	432,089
Income tax expense (benefit)		1,491	1,465	3,296	2,577
Net income (loss)		315,171	238,277	632,841	429,512
Net income (loss) attributable to noncontrolling interests		8,854	7,018	17,807	12,462
Net income (loss) attributable to Western Midstream Partners, LP		306,317	231,259	615,034	417,050
Limited partners' interest in net income (loss):
Net income (loss) attributable to Western Midstream Partners, LP		306,317	231,259	615,034	417,050
General partner interest in net (income) loss		(6,767)	(4,964)	(13,550)	(8,957)
Limited partners' interest in net income (loss)	[3]	$ 299,550	$ 226,295	$ 601,484	$ 408,093
Net income (loss) per common unit - basic	[3]	$ 0.74	$ 0.55	$ 1.49	$ 0.99
Net income (loss) per common unit - diluted	[3]	$ 0.74	$ 0.55	$ 1.49	$ 0.99
Weighted-average common units outstanding - basic	[3]	403,027	413,070	403,140	413,087
Weighted-average common units outstanding - diluted	[3]	404,162	413,720	404,280	413,557
Service Revenues - Fee Based [Member]
Revenues and other
Revenues and other		$ 655,952	$ 618,985	$ 1,287,550	$ 1,191,260
Service Revenues - Product Based [Member]
Revenues and other
Revenues and other		70,498	27,803	111,365	59,455
Product Sales [Member]
Revenues and other
Revenues and other		149,736	72,256	235,325	143,061
Other [Member]
Revenues and other
Revenues and other		$ 233	$ 87	$ 476	$ 329
[1] Total revenues and other includes related-party amounts of $456.8 million and $885.5 million for the three and six months ended June 30, 2022, respectively, and $415.4 million and $793.7 million for the three and six months ended June 30, 2021, respectively. See Note 6 . Total operating expenses includes related-party amounts of $(11.2) million and $(28.8) million for the three and six months ended June 30, 2022, respectively, and $29.0 million and $68.8 million for the three and six months ended June 30, 2021, respectively. See Note 6 . See Note 5.

Consolidated Statements of Op_2

Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Total revenues and other	[1]	$ 876,419	$ 719,131	$ 1,634,716	$ 1,394,105
Total operating expenses	[2]	526,345	444,074	929,795	878,294
Related Parties [Member]
Total revenues and other		456,781	415,443	885,490	793,694
Total operating expenses		$ (11,213)	$ 28,954	$ (28,840)	$ 68,816
[1] Total revenues and other includes related-party amounts of $456.8 million and $885.5 million for the three and six months ended June 30, 2022, respectively, and $415.4 million and $793.7 million for the three and six months ended June 30, 2021, respectively. See Note 6 . Total operating expenses includes related-party amounts of $(11.2) million and $(28.8) million for the three and six months ended June 30, 2022, respectively, and $29.0 million and $68.8 million for the three and six months ended June 30, 2021, respectively. See Note 6 .

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands		Jun. 30, 2022	Dec. 31, 2021
Current assets
Cash and cash equivalents		$ 97,434	$ 201,999
Accounts receivable, net		716,343	436,513
Other current assets		49,666	46,252
Total current assets		863,443	684,764
Property, plant, and equipment
Cost		13,058,689	12,846,078
Less accumulated depreciation		4,581,122	4,333,171
Net property, plant, and equipment		8,477,567	8,512,907
Goodwill		4,783	4,783
Other intangible assets		728,908	744,742
Equity investments		1,148,487	1,167,187
Other assets	[1]	165,671	158,696
Total assets	[2]	11,388,859	11,273,079
Current liabilities
Accounts and imbalance payables		492,979	326,061
Short-term debt		2,613	505,932
Accrued ad valorem taxes		41,268	44,955
Accrued liabilities		217,817	263,249
Total current liabilities		754,677	1,140,197
Long-term liabilities
Long-term debt		6,656,123	6,400,616
Deferred income taxes		14,345	12,425
Asset retirement obligations		303,548	298,275
Other liabilities		355,163	325,806
Total long-term liabilities		7,329,179	7,037,122
Total liabilities	[3]	8,083,856	8,177,319
Equity and partners' capital
Common units (400,248,341 and 402,993,919 units issued and outstanding at June 30, 2022, and December 31, 2021, respectively)		3,164,328	2,966,955
General partner units (9,060,641 units issued and outstanding at June 30, 2022, and December 31, 2021)		(2,825)	(8,882)
Total partners' capital		3,161,503	2,958,073
Noncontrolling interests		143,500	137,687
Total equity and partners' capital		3,305,003	3,095,760
Total liabilities, equity, and partners' capital		$ 11,388,859	$ 11,273,079
Common units issued		400,248,341	402,993,919
Common units outstanding		400,248,341	402,993,919
General partner units issued		9,060,641	9,060,641
General partner units outstanding		9,060,641	9,060,641
[1] Other assets includes $12.2 million and $9.8 million of NGLs line - fill inventory as of June 30, 2022, and December 31, 2021, respectively. Other assets also includes $55.3 million and $56.2 million of materials and supplies inventory as of June 30, 2022, and December 31, 2021, respectively. Total assets includes related - party amounts of $1.5 billion and $1.4 billion as of June 30, 2022, and December 31, 2021, respectively, which includes related - party Accounts receivable, net of $322.7 million and $180.2 million as of June 30, 2022, and December 31, 2021, respectively. See Note 6 . Total liabilities includes related - party amounts of $288.3 million and $270.5 million as of June 30, 2022, and December 31, 2021, respectively. See Note 6 .

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands		Jun. 30, 2022	Dec. 31, 2021
Materials and supplies inventory		$ 55,300	$ 56,200
Total assets	[1]	11,388,859	11,273,079
Accounts receivable, net		716,343	436,513
Total liabilities	[2]	8,083,856	8,177,319
Related Parties [Member]
Total assets		1,531,714	1,405,376
Accounts receivable, net		322,715	180,205
Total liabilities		288,319	270,521
Natural-Gas Liquids [Member]
NGLs line-fill inventory		$ 12,200	$ 9,800
[1] Total assets includes related - party amounts of $1.5 billion and $1.4 billion as of June 30, 2022, and December 31, 2021, respectively, which includes related - party Accounts receivable, net of $322.7 million and $180.2 million as of June 30, 2022, and December 31, 2021, respectively. See Note 6 . Total liabilities includes related - party amounts of $288.3 million and $270.5 million as of June 30, 2022, and December 31, 2021, respectively. See Note 6 .

Consolidated Statements of Equi

Consolidated Statements of Equity and Partners' Capital - USD ($) $ in Thousands		Total	Occidental [Member]	Chipeta [Member]	WES Operating [Member]	Common Units [Member]	Common Units [Member] Occidental [Member]	General Partner [Member]	Noncontrolling Interests [Member]	Noncontrolling Interests [Member] Chipeta [Member]	Noncontrolling Interests [Member] WES Operating [Member]
Balance at Dec. 31, 2020		$ 2,895,212				$ 2,778,339		$ (17,208)	$ 134,081
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)		191,235				181,798		3,993	5,444
Distributions to noncontrolling interest owners				$ (276)	$ (2,551)					$ (276)	$ (2,551)
Distributions to Partnership unitholders		(131,265)				(128,447)		(2,818)
Unit repurchases	[1]	(16,241)				(16,241)
Contributions of equity-based compensation from related parties			$ 3,210				$ 3,210
Equity-based compensation expense		3,524				3,524
Net contributions from (distributions to) related parties		1,627				1,627
Other		(2,355)				(2,355)
Balance at Mar. 31, 2021		2,942,120				2,821,455		(16,033)	136,698
Balance at Dec. 31, 2020		2,895,212				2,778,339		(17,208)	134,081
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)		429,512
Balance at Jun. 30, 2021		3,052,873				2,927,066		(13,923)	139,730
Balance at Mar. 31, 2021		2,942,120				2,821,455		(16,033)	136,698
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)		238,277				226,295		4,964	7,018
Distributions to noncontrolling interest owners				(1,245)	(2,741)					(1,245)	(2,741)
Distributions to Partnership unitholders		(132,969)				(130,115)		(2,854)
Contributions of equity-based compensation from related parties			2,375				2,375
Equity-based compensation expense		4,746				4,746
Net contributions from (distributions to) related parties		2,881				2,881
Other		(571)				(571)
Balance at Jun. 30, 2021		3,052,873				2,927,066		(13,923)	139,730
Balance at Dec. 31, 2021		3,095,760				2,966,955		(8,882)	137,687
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)		317,670				301,934		6,783	8,953
Distributions to noncontrolling interest owners				(1,984)	(2,805)					(1,984)	(2,805)
Distributions to Partnership unitholders		(134,749)				(131,786)		(2,963)
Unit repurchases	[1]	(5,149)				(5,149)
Contributions of equity-based compensation from related parties			1,949				1,949
Equity-based compensation expense		5,794				5,794
Net contributions from (distributions to) related parties		409				409
Other		(6,088)				(6,088)
Balance at Mar. 31, 2022		3,270,807				3,134,018		(5,062)	141,851
Balance at Dec. 31, 2021		3,095,760				2,966,955		(8,882)	137,687
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)		632,841
Balance at Jun. 30, 2022		3,305,003				3,164,328		(2,825)	143,500
Balance at Mar. 31, 2022		3,270,807				3,134,018		(5,062)	141,851
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)		315,171				299,550		6,767	8,854
Distributions to noncontrolling interest owners				$ (1,198)	$ (6,007)					$ (1,198)	$ (6,007)
Distributions to Partnership unitholders		(206,197)				(201,667)		(4,530)
Unit repurchases		(74,068)				(74,068)
Contributions of equity-based compensation from related parties			$ 241				$ 241
Equity-based compensation expense		6,797				6,797
Net contributions from (distributions to) related parties		375				375
Other		(918)				(918)
Balance at Jun. 30, 2022		$ 3,305,003				$ 3,164,328		$ (2,825)	$ 143,500
[1] See Note 5 .

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities
Net income (loss)		$ 632,841	$ 429,512
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization		273,618	268,402
Long-lived asset and other impairments		90	27,604
Non-cash equity-based compensation expense		14,781	13,855
Deferred income taxes		1,920	1,273
Accretion and amortization of long-term obligations, net		3,586	4,002
Equity income, net – related parties		(98,071)	(110,831)
Distributions from equity-investment earnings – related parties		96,404	110,763
(Gain) loss on divestiture and other, net		780	(642)
(Gain) loss on early extinguishment of debt		(91)	289
Other		136	41
Changes in assets and liabilities:
(Increase) decrease in accounts receivable, net		(279,830)	(69,164)
Increase (decrease) in accounts and imbalance payables and accrued liabilities, net		82,909	39,291
Change in other items, net		14,366	(734)
Net cash provided by operating activities		743,439	713,661
Cash flows from investing activities
Capital expenditures	[1]	(191,357)	(139,928)
Contributions to equity investments – related parties		(5,040)	(3,508)
Distributions from equity investments in excess of cumulative earnings – related parties		25,407	21,373
Proceeds from the sale of assets to third parties		1,096	8,003
(Increase) decrease in materials and supplies inventory and other		(1,053)	7,656
Net cash used in investing activities		(170,947)	(106,404)
Cash flows from financing activities
Borrowings, net of debt issuance costs		634,010	100,000
Repayments of debt		(883,548)	(531,085)
Increase (decrease) in outstanding checks		13,038	(29,102)
Distributions to Partnership unitholders	[2]	(340,946)	(264,234)
Net contributions from (distributions to) related parties		784	4,508
Unit repurchases		(79,217)	(16,241)
Other		(9,184)	(3,639)
Net cash provided by (used in) financing activities		(677,057)	(746,606)
Net increase (decrease) in cash and cash equivalents		(104,565)	(139,349)
Cash and cash equivalents at beginning of period		201,999	444,922
Cash and cash equivalents at end of period		97,434	305,573
Supplemental disclosures
Interest paid, net of capitalized interest		181,790	188,280
Income taxes paid (reimbursements received)		905	932
Accrued capital expenditures		51,878	27,592
Chipeta [Member]
Cash flows from financing activities
Distributions to Chipeta noncontrolling interest owner		(3,182)	(1,521)
WES Operating [Member]
Cash flows from financing activities
Distributions to noncontrolling interest owner of WES Operating		$ (8,812)	$ (5,292)
[1] Includes purchases from related parties of $2.0 million for the six months ended June 30, 2021. See Note 6 . See Note 6 .

Consolidated Statements of Ca_2

Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021
Capital expenditures	[1]	$ 191,357	$ 139,928
Related Parties [Member]
Capital expenditures		$ 0	$ 2,000
[1] Includes purchases from related parties of $2.0 million for the six months ended June 30, 2021. See Note 6 .

Consolidated Statements of Op_3

Consolidated Statements of Operations - WES Operating - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenues and other
Revenues and other	[1]	$ 876,419	$ 719,131	$ 1,634,716	$ 1,394,105
Equity income, net – related parties		48,464	58,666	98,071	110,831
Operating expenses
Cost of product		148,556	78,044	221,404	167,013
Operation and maintenance		168,153	153,028	297,129	293,360
General and administrative		47,848	44,448	96,450	89,564
Property and other taxes		22,662	17,967	41,104	32,351
Depreciation and amortization		139,036	137,849	273,618	268,402
Long-lived asset and other impairments		90	12,738	90	27,604
Total operating expenses	[2]	526,345	444,074	929,795	878,294
Gain (loss) on divestiture and other, net		(1,150)	1,225	(780)	642
Operating income (loss)		397,388	334,948	802,212	627,284
Interest expense		(80,772)	(95,290)	(166,227)	(193,783)
Gain (loss) on early extinguishment of debt		91	0	91	(289)
Other income (expense), net		(45)	84	61	(1,123)
Income (loss) before income taxes		316,662	239,742	636,137	432,089
Income tax expense (benefit)		1,491	1,465	3,296	2,577
Net income (loss)		315,171	238,277	632,841	429,512
Net income (loss) attributable to noncontrolling interest		8,854	7,018	17,807	12,462
Net income (loss) attributable to Western Midstream Operating, LP		306,317	231,259	615,034	417,050
Service Revenues - Fee Based [Member]
Revenues and other
Revenues and other		655,952	618,985	1,287,550	1,191,260
Service Revenues - Product Based [Member]
Revenues and other
Revenues and other		70,498	27,803	111,365	59,455
Product Sales [Member]
Revenues and other
Revenues and other		149,736	72,256	235,325	143,061
Other [Member]
Revenues and other
Revenues and other		233	87	476	329
WES Operating [Member]
Revenues and other
Revenues and other	[3]	876,419	719,131	1,634,716	1,394,105
Equity income, net – related parties		48,464	58,666	98,071	110,831
Operating expenses
Cost of product		148,556	78,044	221,404	167,013
Operation and maintenance		168,153	153,028	297,129	293,360
General and administrative		47,227	42,848	95,088	87,078
Property and other taxes		22,662	17,967	41,104	32,351
Depreciation and amortization		139,036	137,849	273,618	268,402
Long-lived asset and other impairments		90	12,738	90	27,604
Total operating expenses	[4]	525,724	442,474	928,433	875,808
Gain (loss) on divestiture and other, net		(1,150)	1,225	(780)	642
Operating income (loss)		398,009	336,548	803,574	629,770
Interest expense		(80,772)	(95,290)	(166,227)	(193,783)
Gain (loss) on early extinguishment of debt		91	0	91	(289)
Other income (expense), net		(49)	82	54	(1,128)
Income (loss) before income taxes		317,279	241,340	637,492	434,570
Income tax expense (benefit)		1,491	1,465	3,296	2,577
Net income (loss)		315,788	239,875	634,196	431,993
Net income (loss) attributable to noncontrolling interest		2,587	2,264	5,223	3,897
Net income (loss) attributable to Western Midstream Operating, LP		313,201	237,611	628,973	428,096
WES Operating [Member] | Service Revenues - Fee Based [Member]
Revenues and other
Revenues and other		655,952	618,985	1,287,550	1,191,260
WES Operating [Member] | Service Revenues - Product Based [Member]
Revenues and other
Revenues and other		70,498	27,803	111,365	59,455
WES Operating [Member] | Product Sales [Member]
Revenues and other
Revenues and other		149,736	72,256	235,325	143,061
WES Operating [Member] | Other [Member]
Revenues and other
Revenues and other		$ 233	$ 87	$ 476	$ 329
[1] Total revenues and other includes related-party amounts of $456.8 million and $885.5 million for the three and six months ended June 30, 2022, respectively, and $415.4 million and $793.7 million for the three and six months ended June 30, 2021, respectively. See Note 6 . Total operating expenses includes related-party amounts of $(11.2) million and $(28.8) million for the three and six months ended June 30, 2022, respectively, and $29.0 million and $68.8 million for the three and six months ended June 30, 2021, respectively. See Note 6 . Total revenues and other includes related-party amounts of $456.8 million and $885.5 million for the three and six months ended June 30, 2022, respectively, and $415.4 million and $793.7 million for the three and six months ended June 30, 2021, respectively. See Note 6 . Total operating expenses includes related-party amounts of $(10.5) million and $(27.2) million for the three and six months ended June 30, 2022, respectively, and $29.6 million and $69.9 million for the three and six months ended June 30, 2021, respectively. See Note 6 .

Consolidated Statements of Op_4

Consolidated Statements of Operations - WES Operating (Parenthetical) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Total revenues and other	[1]	$ 876,419	$ 719,131	$ 1,634,716	$ 1,394,105
Total operating expenses	[2]	526,345	444,074	929,795	878,294
Related Parties [Member]
Total revenues and other		456,781	415,443	885,490	793,694
Total operating expenses		(11,213)	28,954	(28,840)	68,816
WES Operating [Member]
Total revenues and other	[3]	876,419	719,131	1,634,716	1,394,105
Total operating expenses	[4]	525,724	442,474	928,433	875,808
WES Operating [Member] | Related Parties [Member]
Total revenues and other		456,800	415,400	885,500	793,700
Total operating expenses		$ (10,500)	$ 29,600	$ (27,200)	$ 69,900
[1] Total revenues and other includes related-party amounts of $456.8 million and $885.5 million for the three and six months ended June 30, 2022, respectively, and $415.4 million and $793.7 million for the three and six months ended June 30, 2021, respectively. See Note 6 . Total operating expenses includes related-party amounts of $(11.2) million and $(28.8) million for the three and six months ended June 30, 2022, respectively, and $29.0 million and $68.8 million for the three and six months ended June 30, 2021, respectively. See Note 6 . Total revenues and other includes related-party amounts of $456.8 million and $885.5 million for the three and six months ended June 30, 2022, respectively, and $415.4 million and $793.7 million for the three and six months ended June 30, 2021, respectively. See Note 6 . Total operating expenses includes related-party amounts of $(10.5) million and $(27.2) million for the three and six months ended June 30, 2022, respectively, and $29.6 million and $69.9 million for the three and six months ended June 30, 2021, respectively. See Note 6 .

Consolidated Balance Sheets - W

Consolidated Balance Sheets - WES Operating - USD ($) $ in Thousands		Jun. 30, 2022	Dec. 31, 2021
Current assets
Cash and cash equivalents		$ 97,434	$ 201,999
Accounts receivable, net		716,343	436,513
Other current assets		49,666	46,252
Total current assets		863,443	684,764
Property, plant, and equipment
Cost		13,058,689	12,846,078
Less accumulated depreciation		4,581,122	4,333,171
Net property, plant, and equipment		8,477,567	8,512,907
Goodwill		4,783	4,783
Other intangible assets		728,908	744,742
Equity investments		1,148,487	1,167,187
Other assets	[1]	165,671	158,696
Total assets	[2]	11,388,859	11,273,079
Current liabilities
Accounts and imbalance payables		492,979	326,061
Short-term debt		2,613	505,932
Accrued ad valorem taxes		41,268	44,955
Accrued liabilities		217,817	263,249
Total current liabilities		754,677	1,140,197
Long-term liabilities
Long-term debt		6,656,123	6,400,616
Deferred income taxes		14,345	12,425
Asset retirement obligations		303,548	298,275
Other liabilities		355,163	325,806
Total long-term liabilities		7,329,179	7,037,122
Total liabilities	[3]	8,083,856	8,177,319
Equity and partners' capital
Common units (318,675,578 units issued and outstanding at June 30, 2022, and December 31, 2021)		3,164,328	2,966,955
Total partners' capital		3,161,503	2,958,073
Noncontrolling interest		143,500	137,687
Total equity and partners' capital		3,305,003	3,095,760
Total liabilities, equity, and partners' capital		$ 11,388,859	$ 11,273,079
Common units issued		400,248,341	402,993,919
Common units outstanding		400,248,341	402,993,919
WES Operating [Member]
Current assets
Cash and cash equivalents		$ 79,898	$ 195,598
Accounts receivable, net		716,343	436,513
Other current assets		48,276	44,421
Total current assets		844,517	676,532
Property, plant, and equipment
Cost		13,058,689	12,846,078
Less accumulated depreciation		4,581,122	4,333,171
Net property, plant, and equipment		8,477,567	8,512,907
Goodwill		4,783	4,783
Other intangible assets		728,908	744,742
Equity investments		1,148,487	1,167,187
Other assets	[4]	164,985	158,696
Total assets	[5]	11,369,247	11,264,847
Current liabilities
Accounts and imbalance payables		519,125	374,443
Short-term debt		2,613	505,932
Accrued ad valorem taxes		41,268	44,955
Accrued liabilities		179,243	210,693
Total current liabilities		742,249	1,136,023
Long-term liabilities
Long-term debt		6,656,123	6,400,616
Deferred income taxes		14,345	12,425
Asset retirement obligations		303,548	298,275
Other liabilities		354,478	324,842
Total long-term liabilities		7,328,494	7,036,158
Total liabilities	[6]	8,070,743	8,172,181
Equity and partners' capital
Common units (318,675,578 units issued and outstanding at June 30, 2022, and December 31, 2021)		3,267,086	3,063,289
Total partners' capital		3,267,086	3,063,289
Noncontrolling interest		31,418	29,377
Total equity and partners' capital		3,298,504	3,092,666
Total liabilities, equity, and partners' capital		$ 11,369,247	$ 11,264,847
Common units issued		318,675,578	318,675,578
Common units outstanding		318,675,578	318,675,578
[1] Other assets includes $12.2 million and $9.8 million of NGLs line - fill inventory as of June 30, 2022, and December 31, 2021, respectively. Other assets also includes $55.3 million and $56.2 million of materials and supplies inventory as of June 30, 2022, and December 31, 2021, respectively. Total assets includes related - party amounts of $1.5 billion and $1.4 billion as of June 30, 2022, and December 31, 2021, respectively, which includes related - party Accounts receivable, net of $322.7 million and $180.2 million as of June 30, 2022, and December 31, 2021, respectively. See Note 6 . Total liabilities includes related - party amounts of $288.3 million and $270.5 million as of June 30, 2022, and December 31, 2021, respectively. See Note 6 . Other assets includes $12.2 million and $9.8 million of NGLs line - fill inventory as of June 30, 2022, and December 31, 2021, respectively. Other assets also includes $55.3 million and $56.2 million of materials and supplies inventory as of June 30, 2022, and December 31, 2021, respectively. Total assets includes related - party amounts of $1.5 billion and $1.4 billion as of June 30, 2022, and December 31, 2021, respectively, which includes related - party Accounts receivable, net of $322.7 million and $180.2 million as of June 30, 2022, and December 31, 2021, respectively. See Note 6 . Total liabilities includes related - party amounts of $314.2 million and $318.7 million as of June 30, 2022, and December 31, 2021, respectively. See Note 6 .

Consolidated Balance Sheets -_2

Consolidated Balance Sheets - WES Operating (Parenthetical) - USD ($) $ in Thousands		Jun. 30, 2022	Dec. 31, 2021
Materials and supplies inventory		$ 55,300	$ 56,200
Total assets	[1]	11,388,859	11,273,079
Accounts receivable, net		716,343	436,513
Total liabilities	[2]	8,083,856	8,177,319
Related Parties [Member]
Total assets		1,531,714	1,405,376
Accounts receivable, net		322,715	180,205
Total liabilities		288,319	270,521
Natural-Gas Liquids [Member]
NGLs line-fill inventory		12,200	9,800
WES Operating [Member]
Materials and supplies inventory		55,300	56,200
Total assets	[3]	11,369,247	11,264,847
Accounts receivable, net		716,343	436,513
Total liabilities	[4]	8,070,743	8,172,181
WES Operating [Member] | Related Parties [Member]
Total assets		1,500,000	1,400,000
Accounts receivable, net		322,700	180,200
Total liabilities		314,200	318,700
WES Operating [Member] | Natural-Gas Liquids [Member]
NGLs line-fill inventory		$ 12,200	$ 9,800
[1] Total assets includes related - party amounts of $1.5 billion and $1.4 billion as of June 30, 2022, and December 31, 2021, respectively, which includes related - party Accounts receivable, net of $322.7 million and $180.2 million as of June 30, 2022, and December 31, 2021, respectively. See Note 6 . Total liabilities includes related - party amounts of $288.3 million and $270.5 million as of June 30, 2022, and December 31, 2021, respectively. See Note 6 . Total assets includes related - party amounts of $1.5 billion and $1.4 billion as of June 30, 2022, and December 31, 2021, respectively, which includes related - party Accounts receivable, net of $322.7 million and $180.2 million as of June 30, 2022, and December 31, 2021, respectively. See Note 6 . Total liabilities includes related - party amounts of $314.2 million and $318.7 million as of June 30, 2022, and December 31, 2021, respectively. See Note 6 .

Consolidated Statements of Eq_2

Consolidated Statements of Equity and Partners' Capital - WES Operating - USD ($) $ in Thousands	Total	Occidental [Member]	Chipeta [Member]	Common Units [Member]	Common Units [Member] Occidental [Member]	Noncontrolling Interest [Member]	Noncontrolling Interest [Member] Chipeta [Member]	WES Operating [Member]	WES Operating [Member] Occidental [Member]	WES Operating [Member] WES [Member]	WES Operating [Member] Chipeta [Member]	WES Operating [Member] Common Units [Member]	WES Operating [Member] Common Units [Member] Occidental [Member]	WES Operating [Member] Common Units [Member] WES [Member]	WES Operating [Member] Noncontrolling Interest [Member]	WES Operating [Member] Noncontrolling Interest [Member] Chipeta [Member]
Balance at Dec. 31, 2020	$ 2,895,212			$ 2,778,339		$ 134,081		$ 2,860,751				$ 2,831,199			$ 29,552
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)	191,235			181,798		5,444		192,118				190,485			1,633
Distributions to noncontrolling interest owners			$ (276)				$ (276)				$ (276)					$ (276)
Distributions to WES Operating unitholders	(131,265)			(128,447)				(127,470)				(127,470)
Contributions of equity-based compensation from related parties		$ 3,210			$ 3,210				$ 3,210	$ 10,826			$ 3,210	$ 10,826
Net contributions from (distributions to) related parties	1,627			1,627				1,627				1,627
Balance at Mar. 31, 2021	2,942,120			2,821,455		136,698		2,940,786				2,909,877			30,909
Balance at Dec. 31, 2020	2,895,212			2,778,339		134,081		2,860,751				2,831,199			29,552
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)	429,512							431,993
Balance at Jun. 30, 2021	3,052,873			2,927,066		139,730		3,052,255				3,020,327			31,928
Balance at Mar. 31, 2021	2,942,120			2,821,455		136,698		2,940,786				2,909,877			30,909
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)	238,277			226,295		7,018		239,875				237,611			2,264
Distributions to noncontrolling interest owners			(1,245)				(1,245)				(1,245)					(1,245)
Distributions to WES Operating unitholders	(132,969)			(130,115)				(137,030)				(137,030)
Contributions of equity-based compensation from related parties		2,375			2,375				2,375	4,613			2,375	4,613
Net contributions from (distributions to) related parties	2,881			2,881				2,881				2,881
Balance at Jun. 30, 2021	3,052,873			2,927,066		139,730		3,052,255				3,020,327			31,928
Balance at Dec. 31, 2021	3,095,760			2,966,955		137,687		3,092,666				3,063,289			29,377
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)	317,670			301,934		8,953		318,408				315,772			2,636
Distributions to noncontrolling interest owners			(1,984)				(1,984)				(1,984)					(1,984)
Distributions to WES Operating unitholders	(134,749)			(131,786)				(140,217)				(140,217)
Contributions of equity-based compensation from related parties		1,949			1,949				1,949	5,663			1,949	5,663
Net contributions from (distributions to) related parties	409			409				409				409
Balance at Mar. 31, 2022	3,270,807			3,134,018		141,851		3,276,894				3,246,865			30,029
Balance at Dec. 31, 2021	3,095,760			2,966,955		137,687		3,092,666				3,063,289			29,377
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)	632,841							634,196
Balance at Jun. 30, 2022	3,305,003			3,164,328		143,500		3,298,504				3,267,086			31,418
Balance at Mar. 31, 2022	3,270,807			3,134,018		141,851		3,276,894				3,246,865			30,029
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)	315,171			299,550		8,854		315,788				313,201			2,587
Distributions to noncontrolling interest owners			$ (1,198)				$ (1,198)				$ (1,198)					$ (1,198)
Distributions to WES Operating unitholders	(206,197)			(201,667)				(300,248)				(300,248)
Contributions of equity-based compensation from related parties		$ 241			$ 241				$ 241	$ 6,652			$ 241	$ 6,652
Net contributions from (distributions to) related parties	375			375				375				375
Balance at Jun. 30, 2022	$ 3,305,003			$ 3,164,328		$ 143,500		$ 3,298,504				$ 3,267,086			$ 31,418

Consolidated Statements of Ca_3

Consolidated Statements of Cash Flows - WES Operating - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities
Net income (loss)		$ 632,841	$ 429,512
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization		273,618	268,402
Long-lived asset and other impairments		90	27,604
Non-cash equity-based compensation expense		14,781	13,855
Deferred income taxes		1,920	1,273
Accretion and amortization of long-term obligations, net		3,586	4,002
Equity income, net – related parties		(98,071)	(110,831)
Distributions from equity-investment earnings – related parties		96,404	110,763
(Gain) loss on divestiture and other, net		780	(642)
(Gain) loss on early extinguishment of debt		(91)	289
Other		136	41
Changes in assets and liabilities:
(Increase) decrease in accounts receivable, net		(279,830)	(69,164)
Increase (decrease) in accounts and imbalance payables and accrued liabilities, net		82,909	39,291
Change in other items, net		14,366	(734)
Net cash provided by operating activities		743,439	713,661
Cash flows from investing activities
Capital expenditures	[1]	(191,357)	(139,928)
Contributions to equity investments – related parties		(5,040)	(3,508)
Distributions from equity investments in excess of cumulative earnings – related parties		25,407	21,373
Proceeds from the sale of assets to third parties		1,096	8,003
(Increase) decrease in materials and supplies inventory and other		(1,053)	7,656
Net cash used in investing activities		(170,947)	(106,404)
Cash flows from financing activities
Borrowings, net of debt issuance costs		634,010	100,000
Repayments of debt		(883,548)	(531,085)
Increase (decrease) in outstanding checks		13,038	(29,102)
Distributions to WES Operating unitholders	[2]	(340,946)	(264,234)
Net contributions from (distributions to) related parties		784	4,508
Other		(9,184)	(3,639)
Net cash provided by (used in) financing activities		(677,057)	(746,606)
Net increase (decrease) in cash and cash equivalents		(104,565)	(139,349)
Cash and cash equivalents at beginning of period		201,999	444,922
Cash and cash equivalents at end of period		97,434	305,573
Supplemental disclosures
Interest paid, net of capitalized interest		181,790	188,280
Income taxes paid (reimbursements received)		905	932
Accrued capital expenditures		51,878	27,592
Chipeta [Member]
Cash flows from financing activities
Distributions to Chipeta noncontrolling interest owner		(3,182)	(1,521)
WES Operating [Member]
Cash flows from operating activities
Net income (loss)		634,196	431,993
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization		273,618	268,402
Long-lived asset and other impairments		90	27,604
Non-cash equity-based compensation expense		14,505	21,024
Deferred income taxes		1,920	1,273
Accretion and amortization of long-term obligations, net		3,586	4,002
Equity income, net – related parties		(98,071)	(110,831)
Distributions from equity-investment earnings – related parties		96,404	110,763
(Gain) loss on divestiture and other, net		780	(642)
(Gain) loss on early extinguishment of debt		(91)	289
Other		136	41
Changes in assets and liabilities:
(Increase) decrease in accounts receivable, net		(279,830)	(111,567)
Increase (decrease) in accounts and imbalance payables and accrued liabilities, net		74,551	73,215
Change in other items, net		14,889	(1,591)
Net cash provided by operating activities		736,683	713,975
Cash flows from investing activities
Capital expenditures	[3]	(191,357)	(139,928)
Contributions to equity investments – related parties		(5,040)	(3,508)
Distributions from equity investments in excess of cumulative earnings – related parties		25,407	21,373
Proceeds from the sale of assets to third parties		1,096	8,003
(Increase) decrease in materials and supplies inventory and other		(1,053)	7,656
Net cash used in investing activities		(170,947)	(106,404)
Cash flows from financing activities
Borrowings, net of debt issuance costs		634,010	100,000
Repayments of debt		(883,548)	(531,085)
Increase (decrease) in outstanding checks		13,142	(29,110)
Distributions to WES Operating unitholders	[2]	(440,465)	(264,500)
Net contributions from (distributions to) related parties		784	4,508
Other		(2,177)	(3,639)
Net cash provided by (used in) financing activities		(681,436)	(725,347)
Net increase (decrease) in cash and cash equivalents		(115,700)	(117,776)
Cash and cash equivalents at beginning of period		195,598	418,537
Cash and cash equivalents at end of period		79,898	300,761
Supplemental disclosures
Interest paid, net of capitalized interest		181,790	188,280
Income taxes paid (reimbursements received)		905	932
Accrued capital expenditures		51,878	27,592
WES Operating [Member] | Chipeta [Member]
Cash flows from financing activities
Distributions to Chipeta noncontrolling interest owner		$ (3,182)	$ (1,521)
[1] Includes purchases from related parties of $2.0 million for the six months ended June 30, 2021. See Note 6 . See Note 6 . Includes purchases from related parties of $2.0 million for the six months ended June 30, 2021. See Note 6 .

Consolidated Statements of Ca_4

Consolidated Statements of Cash Flows - WES Operating (Parenthetical) - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021
Capital expenditures	[1]	$ 191,357	$ 139,928
WES Operating [Member]
Capital expenditures	[2]	191,357	139,928
Related Parties [Member]
Capital expenditures		$ 0	2,000
Related Parties [Member] | WES Operating [Member]
Capital expenditures			$ 2,000
[1] Includes purchases from related parties of $2.0 million for the six months ended June 30, 2021. See Note 6 . Includes purchases from related parties of $2.0 million for the six months ended June 30, 2021. See Note 6 .

Description of Business and Bas

Description of Business and Basis of Presentation	6 Months Ended
	Jun. 30, 2022
Accounting Policies [Abstract]
Description of Business and Basis of Presentation	1. DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION General. Western Midstream Partners, LP is a Delaware master limited partnership formed in September 2012. Western Midstream Operating, LP (together with its subsidiaries, “WES Operating”) is a Delaware limited partnership formed in 2007 to acquire, own, develop, and operate midstream assets. Western Midstream Partners, LP owns, directly and indirectly, a 98.0% limited partner interest in WES Operating, and directly owns all of the outstanding equity interests of Western Midstream Operating GP, LLC, which holds the entire non - economic general partner interest in WES Operating. For purposes of these consolidated financial statements, the “Partnership” refers to Western Midstream Partners, LP in its individual capacity or to Western Midstream Partners, LP and its subsidiaries, including Western Midstream Operating GP, LLC and WES Operating, as the context requires. “WES Operating GP” refers to Western Midstream Operating GP, LLC, individually as the general partner of WES Operating. The Partnership’s general partner, Western Midstream Holdings, LLC (the “general partner”), is a wholly owned subsidiary of Occidental Petroleum Corporation. “Occidental” refers to Occidental Petroleum Corporation, as the context requires, and its subsidiaries, excluding the general partner. “Anadarko” refers to Anadarko Petroleum Corporation and its subsidiaries, excluding Western Midstream Holdings, LLC. Anadarko became a wholly owned subsidiary of Occidental as a result of Occidental’s acquisition by merger of Anadarko on August 8, 2019. “Related parties” refers to Occidental (see Note 6 ), the Partnership’s investments accounted for under the equity method of accounting (see Note 7 ), and the Partnership and WES Operating for transactions that eliminate upon consolidation (see Note 6 ). The Partnership is engaged in the business of gathering, compressing, treating, processing, and transporting natural gas; gathering, stabilizing, and transporting condensate, natural - gas liquids (“NGLs”), and crude oil; and gathering and disposing of produced water. In its capacity as a natural - gas processor, the Partnership also buys and sells natural gas, NGLs, and condensate on behalf of itself and as an agent for its customers under certain contracts. As of June 30, 2022, the Partnership’s assets and investments consisted of the following: Wholly Operated Non-Operated Equity Gathering systems (1) 17 2 3 1 Treating facilities 37 3 — — Natural - gas processing plants/trains 24 3 — 5 NGLs pipelines 2 — — 5 Natural - gas pipelines 5 — — 1 Crude - oil pipelines 3 1 — 4 _________________________________________________________________________________________ (1) Includes the DBM water systems. These assets and investments are located in Texas, New Mexico, the Rocky Mountains (Colorado, Utah, and Wyoming), and North - central Pennsylvania. 1. DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION Basis of presentation. The consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) and include the accounts of the Partnership and entities in which it holds a controlling financial interest, including WES Operating, WES Operating GP, proportionately consolidated interests, and equity investments (see table below). All significant intercompany transactions have been eliminated. The following table outlines the ownership interests and the accounting method of consolidation used in the consolidated financial statements for entities not wholly owned: Percentage Interest Full consolidation Chipeta (1) 75.00 % Proportionate consolidation (2) Springfield system 50.10 % Marcellus Interest systems 33.75 % Equity investments (3) Mi Vida JV LLC (“Mi Vida”) 50.00 % Ranch Westex JV LLC (“Ranch Westex”) 50.00 % Front Range Pipeline LLC (“FRP”) 33.33 % Red Bluff Express Pipeline, LLC (“Red Bluff Express”) 30.00 % Enterprise EF78 LLC (“Mont Belvieu JV”) 25.00 % Rendezvous Gas Services, LLC (“Rendezvous”) 22.00 % Texas Express Pipeline LLC (“TEP”) 20.00 % Texas Express Gathering LLC (“TEG”) 20.00 % Whitethorn Pipeline Company LLC (“Whitethorn LLC”) 20.00 % Saddlehorn Pipeline Company, LLC (“Saddlehorn”) 20.00 % Cactus II Pipeline LLC (“Cactus II”) 15.00 % Panola Pipeline Company, LLC (“Panola”) 15.00 % White Cliffs Pipeline, LLC (“White Cliffs”) 10.00 % _________________________________________________________________________________________ (1) The 25% third - party interest in Chipeta Processing LLC (“Chipeta”) is reflected within noncontrolling interests in the consolidated financial statements. See Noncontrolling interests below. (2) The Partnership proportionately consolidates its associated share of the assets, liabilities, revenues, and expenses attributable to these assets. (3) Investments in non - controlled entities over which the Partnership exercises significant influence are accounted for under the equity method of accounting. “Equity - investment throughput” refers to the Partnership’s share of average throughput for these investments. Certain information and note disclosures commonly included in annual financial statements have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Accordingly, the accompanying consolidated financial statements and notes should be read in conjunction with the Partnership’s 2021 Form 10-K, as filed with the SEC on February 23, 2022. Management believes that the disclosures made are adequate to make the information not misleading. 1. DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION The consolidated financial results of WES Operating are included in the Partnership’s consolidated financial statements. Throughout these notes to consolidated financial statements, and to the extent material, any differences between the consolidated financial results of the Partnership and WES Operating are discussed separately. The Partnership’s consolidated financial statements differ from those of WES Operating primarily as a result of (i) the presentation of noncontrolling interest ownership (see Noncontrolling interests below), (ii) the elimination of WES Operating GP’s investment in WES Operating with WES Operating GP’s underlying capital account, (iii) the general and administrative expenses incurred by the Partnership, which are separate from, and in addition to, those incurred by WES Operating, (iv) the inclusion of the impact of Partnership equity balances and Partnership distributions, and (v) transactions between the Partnership and WES Operating that eliminate upon consolidation. Presentation of the Partnership’s assets. The Partnership’s assets include assets owned and ownership interests accounted for by the Partnership under the equity method of accounting, through its 98.0% partnership interest in WES Operating, as of June 30, 2022 (see Note 7 ). The Partnership also owns and controls the entire non - economic general partner interest in WES Operating GP, and the Partnership’s general partner is owned by Occidental. Use of estimates. In preparing financial statements in accordance with GAAP, management makes informed judgments and estimates that affect the reported amounts of assets, liabilities, revenues, and expenses. Management evaluates its estimates and related assumptions regularly, using historical experience and other reasonable methods. Changes in facts and circumstances or additional information may result in revised estimates, and actual results may differ from these estimates. Effects on the business, financial condition, and results of operations resulting from revisions to estimates are recognized when the facts that give rise to the revisions become known. The information included herein reflects all normal recurring adjustments which are, in the opinion of management, necessary for a fair presentation of the consolidated financial statements, and certain prior-period amounts have been reclassified to conform to the current-year presentation. Noncontrolling interests. The Partnership’s noncontrolling interests in the consolidated financial statements consist of (i) the 25% third - party interest in Chipeta and (ii) the 2.0% Occidental subsidiary - owned limited partner interest in WES Operating. WES Operating’s noncontrolling interest in the consolidated financial statements consists of the 25% third - party interest in Chipeta. See Note 5. Segments. The Partnership’s operations continue to be organized into a single operating segment, the assets of which gather, compress, treat, process, and transport natural gas; gather, stabilize, and transport condensate, NGLs, and crude oil; and gather and dispose of produced water in the United States. Equity-based compensation. During the six months ended June 30, 2022, the Partnership issued 568,984 common units under its long-term incentive plans. Compensation expense was $6.8 million and $12.6 million for the three and six months ended June 30, 2022, respectively, and $4.7 million and $8.3 million for the three and six months ended June 30, 2021, respectively.

Revenue from Contracts with Cus

Revenue from Contracts with Customers	6 Months Ended
	Jun. 30, 2022
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customers	2. REVENUE FROM CONTRACTS WITH CUSTOMERS The following table summarizes revenue from contracts with customers: Three Months Ended Six Months Ended thousands 2022 2021 2022 2021 Revenue from customers Service revenues – fee based $ 655,952 $ 572,607 $ 1,287,550 $ 1,102,020 Service revenues – product based 70,498 27,803 111,365 59,455 Product sales 149,736 72,256 235,325 143,061 Total revenue from customers 876,186 672,666 1,634,240 1,304,536 Revenue from other than customers Lease revenue (1) — 46,378 — 89,240 Other 233 87 476 329 Total revenues and other $ 876,419 $ 719,131 $ 1,634,716 $ 1,394,105 _________________________________________________________________________________________ (1) Includes fixed - and variable - lease revenue from an operating and maintenance agreement entered into with Occidental. See Operating leases within Note 6. Contract balances. Receivables from customers, which are included in Accounts receivable, net on the consolidated balance sheets were $705.3 million and $424.6 million as of June 30, 2022, and December 31, 2021, respectively. Contract assets primarily relate to (i) revenue accrued but not yet billed under cost - of - service contracts with fixed and variable fees and (ii) accrued deficiency fees the Partnership expects to charge customers once the related performance periods are completed. The following table summarizes activity related to contract assets from contracts with customers: thousands Contract assets balance at December 31, 2021 $ 22,557 Amounts transferred to Accounts receivable, net that were included in the contract assets balance at the beginning of the period (1) (336) Additional estimated revenues recognized (2) 12,444 Contract assets balance at June 30, 2022 $ 34,665 Contract assets at June 30, 2022 Other current assets $ 16,512 Other assets 18,153 Total contract assets from contracts with customers $ 34,665 _________________________________________________________________________________________ (1) Includes $(0.1) million for the three months ended June 30, 2022. (2) Includes $5.9 million for the three months ended June 30, 2022. 2. REVENUE FROM CONTRACTS WITH CUSTOMERS Contract liabilities primarily relate to (i) fixed and variable fees under cost - of - service contracts that are received from customers for which revenue recognition is deferred, (ii) aid - in - construction payments received from customers that must be recognized over the expected period of customer benefit, and (iii) fees that are charged to customers for only a portion of the contract term and must be recognized as revenues over the expected period of customer benefit. The following table summarizes activity related to contract liabilities from contracts with customers: thousands Contract liabilities balance at December 31, 2021 $ 313,146 Cash received or receivable, excluding revenues recognized during the period (1) 28,036 Revenues recognized that were included in the contract liability balance at the beginning of the period (2) (13,932) Contract liabilities balance at June 30, 2022 $ 327,250 Contract liabilities at June 30, 2022 Accrued liabilities $ 9,142 Other liabilities 318,108 Total contract liabilities from contracts with customers $ 327,250 _________________________________________________________________________________________ (1) Includes $19.8 million for the three months ended June 30, 2022. (2) Includes $(2.7) million for the three months ended June 30, 2022. Transaction price allocated to remaining performance obligations. Revenues expected to be recognized from certain performance obligations that are unsatisfied (or partially unsatisfied) as of June 30, 2022, are presented in the following table. The Partnership applies the optional exemptions in Revenue from Contracts with Customers (Topic 606) and does not disclose consideration for remaining performance obligations with an original expected duration of one year or less or for variable consideration related to unsatisfied (or partially unsatisfied) performance obligations. Therefore, the following table represents only a portion of expected future revenues from existing contracts as most future revenues from customers are dependent on future variable customer volumes and, in some cases, variable commodity prices for those volumes. thousands Remainder of 2022 $ 550,444 2023 1,046,368 2024 1,020,299 2025 936,523 2026 808,712 Thereafter 2,176,400 Total $ 6,538,746

Acquisitions and Divestitures

Acquisitions and Divestitures	6 Months Ended
	Jun. 30, 2022
Property, Plant and Equipment [Abstract]
Acquisitions and Divestitures	3. ACQUISITIONS AND DIVESTITURES Bison facility. In October 2020, the Partnership entered into an option agreement to sell the Bison treating facility, located in Northeast Wyoming, to a third party. During the second quarter of 2021, the third party exercised its option to purchase the Bison treating facility and the sale closed. The Partnership received total proceeds of $8.0 million, $7.0 million in the fourth quarter of 2020 and $1.0 million when the sale closed in the second quarter of 2021, resulting in a net gain on sale of $5.4 million that was recorded as Gain (loss) on divestiture and other, net in the consolidated statements of operations.

Partnership Distributions

Partnership Distributions	3 Months Ended
	Jun. 30, 2022
Distributions Made to Members or Limited Partners [Abstract]
Partnership Distributions	4. PARTNERSHIP DISTRIBUTIONS Partnership distributions. Under its partnership agreement, the Partnership distributes all of its available cash (beyond proper reserves as defined in its partnership agreement) to unitholders of record on the applicable record date within 55 days following each quarter’s end. The Board of Directors of the general partner (the “Board”) declared the following cash distributions to the Partnership’s unitholders for the periods presented: thousands except per-unit amounts Quarters Ended Total Quarterly Total Quarterly Distribution Record 2021 March 31 $ 0.31500 $ 132,969 May 14, 2021 April 30, 2021 June 30 0.31900 134,662 August 13, 2021 July 30, 2021 September 30 0.32300 134,862 November 12, 2021 November 1, 2021 December 31 0.32700 134,749 February 14, 2022 January 31, 2022 2022 March 31 $ 0.50000 $ 206,197 May 13, 2022 May 2, 2022 June 30 0.50000 197,744 August 12, 2022 August 1, 2022 Available cash. The amount of available cash (beyond proper reserves as defined in the partnership agreement) generally is all cash on hand at the end of the quarter, plus, at the discretion of the general partner, working capital borrowings made subsequent to the end of such quarter, less the amount of cash reserves established by the general partner to provide for the proper conduct of the Partnership’s business, including (i) to fund future capital expenditures; (ii) to comply with applicable laws, debt instruments, or other agreements; or (iii) to provide funds for unitholder distributions for any one or more of the next four quarters. Working capital borrowings generally include borrowings made under a credit facility or similar financing arrangement and are intended to be repaid or refinanced within 12 months. In all cases, working capital borrowings are used solely for working capital purposes or to fund unitholder distributions. WES Operating partnership distributions. WES Operating makes quarterly cash distributions to the Partnership and WGR Asset Holding Company LLC (“WGRAH”), a subsidiary of Occidental, in proportion to their share of limited partner interests in WES Operating. See Note 5 . WES Operating made the following cash distributions to its limited partners for the periods presented: thousands Quarters Ended Total Quarterly Distribution 2021 March 31 $ 137,030 May 2021 June 30 140,217 August 2021 September 30 140,217 November 2021 December 31 140,217 February 2022 2022 March 31 $ 213,513 May 2022 June 30 213,513 August 2022 In addition to the distributions above, during the three months ended June 30, 2022, WES Operating made distributions of $86.7 million to the Partnership and WGRAH. The Partnership used its portion of the distribution to repurchase common units. See Note 5

Equity and Partners' Capital

Equity and Partners' Capital	6 Months Ended
	Jun. 30, 2022
Partners' Capital Notes [Abstract]
Equity and Partners' Capital	5. EQUITY AND PARTNERS’ CAPITAL Holdings of Partnership equity. The Partnership’s common units are listed on the New York Stock Exchange under the ticker symbol “WES.” As of June 30, 2022, Occidental held 200,281,578 common units, representing a 48.9% limited partner interest in the Partnership, and through its ownership of the general partner, Occidental indirectly held 9,060,641 general partner units, representing a 2.2% general partner interest in the Partnership. The public held 199,966,763 common units, representing a 48.9% limited partner interest in the Partnership. In March 2021, an affiliate of Occidental sold 11,500,000 of the Partnership’s common units it held through an underwritten offering, including 1,500,000 common units pursuant to the full exercise of the underwriters’ over - allotment option. The Partnership did not receive any proceeds from the public offering. Partnership equity repurchases. In February 2022, the Board authorized the Partnership to buy back up to $1.0 billion of the Partnership’s common units through December 31, 2024 (the “$1.0 billion Purchase Program”). The common units may be purchased from time to time in the open market at prevailing market prices or in privately negotiated transactions. During the six months ended June 30, 2022, the Partnership repurchased 3,314,562 common units on the open market for an aggregate purchase price of $79.2 million. From July 1, 2022, through July 29, 2022, the Partnership repurchased 13,800,805 common units, which includes 10,000,000 common units repurchased from Occidental, for an aggregate purchase price of $346.1 million. The units were canceled immediately upon receipt. As of July 29, 2022, Occidental held 190,281,578 common units and the public held 196,168,502 common units, representing a 48.1% and 49.6% limited partner interest in the Partnership, respectively. General partner units remained at 9,060,641, representing a 2.3% general partner interest in the Partnership. Inclusive of the unit repurchases through July 29, 2022, the Partnership had an authorized amount of $574.6 million remaining under the $1.0 billion Purchase Program. In November 2020, the Board authorized the Partnership to buy back up to $250.0 million of the Partnership’s common units through December 31, 2021 (the “$250.0 million Purchase Program”). The common units were purchased from time to time in the open market at prevailing market prices or in privately negotiated transactions. During the six months ended June 30, 2021, the Partnership repurchased 1,115,808 common units on the open market for an aggregate purchase price of $16.2 million. The units were canceled by the Partnership immediately upon receipt. As of December 31, 2021, the entire $250.0 million authorized program had been fulfilled. Holdings of WES Operating equity. As of June 30, 2022, (i) the Partnership, directly and indirectly through its ownership of WES Operating GP, owned a 98.0% limited partner interest and the entire non - economic general partner interest in WES Operating and (ii) Occidental, through its ownership of WGRAH, owned a 2.0% limited partner interest in WES Operating, which is reflected as a noncontrolling interest within the consolidated financial statements of the Partnership (see Note 1 ). Partnership’s net income (loss) per common unit. The common and general partner unitholders’ allocation of net income (loss) attributable to the Partnership was equal to their cash distributions plus their respective allocations of undistributed earnings or losses in accordance with their weighted - average ownership percentage during each period using the two - class method. The Partnership’s basic net income (loss) per common unit is calculated by dividing the limited partners’ interest in net income (loss) by the weighted - average number of common units outstanding during the period. Diluted net income (loss) per common unit includes the effect of outstanding units issued under the Partnership’s long-term incentive plans. 5. EQUITY AND PARTNERS’ CAPITAL The following table provides a reconciliation between basic and diluted net income (loss) per common unit: Three Months Ended Six Months Ended thousands except per-unit amounts 2022 2021 2022 2021 Net income (loss) Limited partners’ interest in net income (loss) $ 299,550 $ 226,295 $ 601,484 $ 408,093 Weighted-average common units outstanding Basic 403,027 413,070 403,140 413,087 Dilutive effect of non-vested phantom units 1,135 650 1,140 470 Diluted 404,162 413,720 404,280 413,557 Excluded due to anti-dilutive effect 618 240 731 333 Net income (loss) per common unit Basic $ 0.74 $ 0.55 $ 1.49 $ 0.99 Diluted $ 0.74 $ 0.55 $ 1.49 $ 0.99 WES Operating’s net income (loss) per common unit. Net income (loss) per common unit for WES Operating is not calculated because it has no publicly traded units.

Related-Party Transactions

Related-Party Transactions	6 Months Ended
	Jun. 30, 2022
Related Party Fees and Other Arrangements, Limited Liability Company (LLC) or Limited Partnership (LP) [Abstract]
Related-Party Transactions	6. RELATED-PARTY TRANSACTIONS Summary of related-party transactions. The following tables summarize material related - party transactions included in the Partnership’s consolidated financial statements: Consolidated statements of operations Three Months Ended Six Months Ended thousands 2022 2021 2022 2021 Revenues and other Service revenues – fee based $ 428,631 $ 402,684 $ 843,530 $ 770,159 Service revenues – product based 21,808 3,658 24,051 8,163 Product sales 6,342 9,101 17,909 15,372 Total revenues and other 456,781 415,443 885,490 793,694 Equity income, net – related parties (1) 48,464 58,666 98,071 110,831 Operating expenses Cost of product (2) (12,148) 18,937 (31,691) 36,584 Operation and maintenance 702 2,915 643 21,037 General and administrative (3) 233 7,102 2,208 11,195 Total operating expenses (11,213) 28,954 (28,840) 68,816 _________________________________________________________________________________________ (1) See Note 7 . (2) Includes related-party natural - gas and NGLs imbalances. (3) Includes (i) amounts charged by Occidental pursuant to the shared services agreement (see Services Agreement within this Note 6 ) and (ii) equity - based compensation expense allocated to the Partnership by Occidental, which is not reimbursed to Occidental and is reflected as a contribution to partners’ capital in the consolidated statements of equity and partners’ capital (see Incentive Plans within this Note 6 ). 6. RELATED-PARTY TRANSACTIONS Consolidated balance sheets thousands June 30, December 31, Assets Accounts receivable, net $ 322,715 $ 180,205 Other current assets 14,591 12,490 Equity investments (1) 1,148,487 1,167,187 Other assets 45,921 45,494 Total assets 1,531,714 1,405,376 Liabilities Accounts and imbalance payables 47,175 49,242 Accrued liabilities 4,136 13,914 Other liabilities 237,008 207,365 Total liabilities 288,319 270,521 _________________________________________________________________________________________ (1) See Note 7 . Consolidated statements of cash flows Six Months Ended thousands 2022 2021 Distributions from equity - investment earnings – related parties $ 96,404 $ 110,763 Capital expenditures — (2,000) Contributions to equity investments – related parties (5,040) (3,508) Distributions from equity investments in excess of cumulative earnings – related parties 25,407 21,373 Distributions to Partnership unitholders (1) (165,633) (130,518) Distributions to WES Operating unitholders (2) (8,812) (5,292) Net contributions from (distributions to) related parties 784 4,508 _________________________________________________________________________________________ (1) Represents distributions paid to Occidental pursuant to the partnership agreement of the Partnership (see Note 4 and Note 5 ). (2) Represents distributions paid to Occidental, through its ownership of WGRAH, pursuant to WES Operating’s partnership agreement (see Note 4 and Note 5 ). 6. RELATED-PARTY TRANSACTIONS The following tables summarize material related - party transactions for WES Operating (which are included in the Partnership’s consolidated financial statements) to the extent the amounts differ materially from the Partnership’s consolidated financial statements: Consolidated statements of operations Three Months Ended Six Months Ended thousands 2022 2021 2022 2021 General and administrative (1) $ 919 $ 7,699 $ 3,867 $ 12,286 _________________________________________________________________________________________ (1) Includes (i) amounts charged by Occidental pursuant to the shared services agreement (see Services Agreement within this Note 6 ), (ii) equity - based compensation expense allocated to WES Operating by Occidental, which is not reimbursed to Occidental and is reflected as a contribution to partners’ capital in the consolidated statements of equity and partners’ capital (see Incentive Plans within this Note 6 ), and (iii) an intercompany service fee between the Partnership and WES Operating. Consolidated balance sheets thousands June 30, December 31, Other current assets $ 14,475 $ 12,490 Other assets 45,235 45,494 Accounts and imbalance payables (1) 73,392 97,749 Accrued liabilities 3,819 13,597 _________________________________________________________________________________________ (1) Includes balances related to transactions between the Partnership and WES Operating. Consolidated statements of cash flows Six Months Ended thousands 2022 2021 Distributions to WES Operating unitholders (1) $ (440,465) $ (264,500) _________________________________________________________________________________________ (1) Represents distributions paid to the Partnership and Occidental, through its ownership of WGRAH, pursuant to WES Operating’s partnership agreement. See Note 4 and Note 5 . Related-party revenues. Related - party revenues include amounts earned by the Partnership from services provided to Occidental and from the sale of natural gas, condensate, and NGLs to Occidental. Gathering and processing agreements. The Partnership has significant gathering, processing, and produced-water disposal arrangements with affiliates of Occidental on most of its systems. While Occidental is the contracting counterparty of the Partnership, these arrangements with Occidental include not just Occidental - produced volumes, but also, in some instances, the volumes of other working - interest owners of Occidental who rely on the Partnership’s facilities and infrastructure to bring their volumes to market. Natural - gas throughput (excluding equity - investment throughput) attributable to production owned or controlled by Occidental was 35% and 36% for the three and six months ended June 30, 2022, respectively, and 36% and 35% for the three and six months ended June 30, 2021, respectively. Crude - oil and NGLs throughput (excluding equity - investment throughput) attributable to production owned or controlled by Occidental was 88% and 89% for the three and six months ended June 30, 2022, respectively, and 90% and 89% for the three and six months ended June 30, 2021, respectively. Produced - water throughput attributable to production owned or controlled by Occidental was 81% and 82% for the three and six months ended June 30, 2022, respectively, and 86% for the three and six months ended June 30, 2021. 6. RELATED-PARTY TRANSACTIONS The Partnership is currently involved in a dispute with Occidental regarding the calculation of the cost - of - service rates under an oil - gathering contract related to the Partnership’s DJ Basin oil - gathering system. If such dispute is resolved in a manner adverse to the Partnership, such resolution could have a negative impact on the Partnership’s financial condition and results of operations, including a reduction in rates and a non - cash charge to earnings. In connection with the sale of its Eagle Ford assets in 2017, Anadarko remained the primary counterparty to the Partnership’s Brasada gas processing agreement and entered into an agency relationship with Sanchez Energy Corporation (“Sanchez”), now Mesquite Energy, Inc. (“Mesquite”), that allows Mesquite to process gas under such agreement. In December 2021, the Brasada gas processing agreement was assigned from Anadarko to Mesquite effective July 1, 2023. For this reason, Anadarko continues to be liable under the Brasada gas processing agreement until June 30, 2023, to the extent Mesquite does not perform. For all periods presented, Mesquite has performed Anadarko’s obligations under the Brasada gas processing agreement pursuant to its agency arrangement with Anadarko. Further, in connection with the sale of its Uinta Basin assets in 2020, Kerr McGee Oil & Gas Onshore LP, a subsidiary of Occidental, retained the deficiency payment obligations under a gas processing agreement at the Chipeta plant. This contingent payment obligation extends through the earlier of October 1, 2022, or the termination of the processing agreement. Marketing Transition Services Agreement. Effective December 31, 2019, certain subsidiaries of Anadarko entered into a transition services agreement (the “Marketing Transition Services Agreement”) to provide marketing - related services to certain of the Partnership’s subsidiaries through December 31, 2020, subject to the option to extend such services for an additional six - month period. The Marketing Transition Services Agreement was terminated on December 31, 2020. While the Partnership still has some marketing agreements with affiliates of Occidental, the Partnership began marketing and selling substantially all of its natural gas and NGLs directly to third parties beginning on January 1, 2021. Operating leases. As a result of the surface - use and salt - water disposal agreements being amended under the CUA (see Related-party commercial agreement below), these agreements are now classified as operating leases and a $30.0 million right-of-use (“ROU”) asset, included in Other assets on the consolidated balance sheets, was recognized during the first quarter of 2021. The ROU asset is being amortized to Operation and maintenance expense over the remaining term of the agreements. Effective December 31, 2019, an affiliate of Occidental and a wholly owned subsidiary of the Partnership, the lessor, entered into an operating and maintenance agreement pursuant to which Occidental provided operational and maintenance services with respect to a crude - oil gathering system and associated treating facilities owned by the Partnership through December 31, 2021. The agreement and underlying contracts included (i) fixed consideration, which was measured as the minimum - volume commitment for both gathering and treating, and (ii) variable consideration, which consisted of all volumes above the minimum - volume commitment. In April 2021, the Partnership exercised its option to terminate the operating and maintenance agreement with Occidental effective December 31, 2021. For the three and six months ended June 30, 2021, the Partnership recognized fixed-lease revenue of $44.0 million and $87.9 million, respectively, and variable-lease revenue of $2.4 million and $1.3 million, respectively, related to these agreements, with such amounts included in Service revenues – fee based in the consolidated statements of operations. Related-party expenses. Operation and maintenance expense includes amounts accrued for or paid to related parties for field - related costs provided by related parties at certain of the Partnership’s assets. A portion of general and administrative expense is paid by Occidental, which results in related - party transactions pursuant to the reimbursement provisions of the Partnership’s and WES Operating’s agreements with Occidental. Cost of product expense includes amounts related to certain continuing marketing arrangements with affiliates of Occidental, related - party imbalances, and transactions with affiliates accounted for under the equity method of accounting. See Marketing Transition Services Agreement in the sections above. Related - party expenses do not bear a direct relationship to related - party revenues, and third - party expenses do not bear a direct relationship to third - party revenues. 6. RELATED-PARTY TRANSACTIONS Services Agreement. General and administrative expense includes costs incurred pursuant to the agreement dated as of December 31, 2019, by and among Occidental, Anadarko, and WES Operating GP, under which Occidental has performed certain centralized corporate functions for the Partnership and WES Operating (“Services Agreement”). Most of the administrative and operational services previously provided by Occidental fully transitioned to the Partnership by December 31, 2021, with certain limited transition services remaining in place pursuant to the terms of the Services Agreement. Incentive Plans. General and administrative expense includes non - cash equity - based compensation expense allocated to the Partnership by Occidental for awards granted to the executive officers of the general partner and to other employees prior to their employment with the Partnership under (i) the Anadarko Petroleum Corporation 2012 Omnibus Incentive Compensation Plan, as amended and restated, (ii) Occidental’s 2015 Long - Term Incentive Plan, and (iii) Occidental’s Phantom Share Unit Award Plan (collectively referred to as the “Incentive Plans”). General and administrative expense includes costs related to the Incentive Plans of $0.2 million and $2.2 million for the three and six months ended June 30, 2022, respectively, and $2.4 million and $5.6 million for the three and six months ended June 30, 2021, respectively. These amounts are reflected as contributions to partners’ capital in the consolidated statements of equity and partners’ capital. Construction reimbursement agreements and purchases from related parties . From time to time, the Partnership enters into construction reimbursement agreements with Occidental providing that the Partnership will manage the construction of certain midstream infrastructure for Occidental in the Partnership’s areas of operation. Such arrangements generally provide for a reimbursement of costs incurred by the Partnership on a cost or cost-plus basis. Additionally, from time to time, in support of the Partnership’s business, the Partnership purchases equipment, inventory, and other miscellaneous assets from Occidental or its affiliates. Related-party commercial agreement. During the first quarter of 2021, an affiliate of Occidental and certain wholly owned subsidiaries of the Partnership entered into a Commercial Understanding Agreement (“CUA”). Under the CUA, certain West Texas surface - use and salt - water disposal agreements were amended to reduce usage fees owed by the Partnership in exchange for the forgiveness of certain deficiency fees owed by Occidental and other unrelated contractual amendments. The present value of the reduced usage fees under the CUA was $30.0 million at the time the agreement was executed. Customer concentration. Occidental was the only customer from which revenues exceeded 10% of consolidated revenues for all periods presented in the consolidated statements of operations.

Equity Investments

Equity Investments	6 Months Ended
	Jun. 30, 2022
Equity Method Investments and Joint Ventures [Abstract]
Equity Investments	7. EQUITY INVESTMENTS The following table presents the financial statement impact of the Partnership’s equity investments for the six months ended June 30, 2022: thousands Balance at December 31, 2021 Equity Contributions Distributions Distributions in excess of cumulative earnings (1) Balance at June 30, 2022 White Cliffs $ 40,753 $ 438 $ — $ (147) $ (1,773) $ 39,271 Rendezvous 22,075 (1,304) — (326) (1,063) 19,382 Mont Belvieu JV 96,728 14,500 — (14,605) (3,288) 93,335 TEG 16,116 3,111 — (3,004) — 16,223 TEP 188,925 21,552 — (21,678) (1,457) 187,342 FRP 196,632 21,318 — (21,584) (2,195) 194,171 Whitethorn LLC 149,690 63 255 2,950 (1,565) 151,393 Cactus II 171,294 7,265 — (7,349) (6,563) 164,647 Saddlehorn 110,441 11,169 — (10,934) (815) 109,861 Panola 20,044 1,052 — (1,052) (864) 19,180 Mi Vida 51,763 7,156 — (7,209) (3,104) 48,606 Ranch Westex 979 4,688 — (4,688) (2,083) (1,104) Red Bluff Express 101,747 7,063 4,785 (6,778) (637) 106,180 Total $ 1,167,187 $ 98,071 $ 5,040 $ (96,404) $ (25,407) $ 1,148,487 _________________________________________________________________________________________ (1) Distributions in excess of cumulative earnings, classified as investing cash flows in the consolidated statements of cash flows, are calculated on an individual - investment basis. During the six months ended June 30, 2021, the Partnership recognized an impairment loss on its investment in Ranch Westex of $11.6 million that resulted from a decline in value below the carrying value, which was determined to be other than temporary in nature. This investment was impaired to its estimated fair value of $2.9 million, using the income approach and Level-3 fair value inputs, due to a reduction in estimated future cash flows resulting from lower forecasted producer throughput.

Property, Plant, and Equipment

Property, Plant, and Equipment	6 Months Ended
	Jun. 30, 2022
Property, Plant and Equipment [Abstract]
Property, Plant, and Equipment	8. PROPERTY, PLANT, AND EQUIPMENT A summary of the historical cost of property, plant, and equipment is as follows: thousands Estimated Useful Life June 30, December 31, Land N/A $ 10,955 $ 10,955 Gathering systems – pipelines 30 years 5,452,285 5,386,003 Gathering systems – compressors 15 years 2,241,600 2,172,953 Processing complexes and treating facilities 25 years 3,386,213 3,375,317 Transportation pipeline and equipment 6 to 45 years 169,365 169,356 Produced - water disposal systems 20 years 890,723 882,527 Assets under construction N/A 137,600 98,473 Other 3 to 40 years 769,948 750,494 Total property, plant, and equipment 13,058,689 12,846,078 Less accumulated depreciation 4,581,122 4,333,171 Net property, plant, and equipment $ 8,477,567 $ 8,512,907 The cost of property classified as “Assets under construction” is excluded from capitalized costs being depreciated. These amounts represent property that is not yet placed into productive service as of the respective balance sheet date. Long-lived asset and other impairments. During the six months ended June 30, 2021, the Partnership recognized impairments of $27.6 million, primarily attributable to (i) $14.0 million of impairments at the DJ Basin complex due to cancellation of projects and (ii) an $11.6 million other-than-temporary impairment of the Partnership’s investment in Ranch Westex (see Note 7 ).

Selected Components of Working

Selected Components of Working Capital	6 Months Ended
	Jun. 30, 2022
Selected Components Of Working Capital [Abstract]
Selected Components of Working Capital	9. SELECTED COMPONENTS OF WORKING CAPITAL A summary of accounts receivable, net is as follows: The Partnership WES Operating thousands June 30, December 31, June 30, December 31, Trade receivables, net $ 710,315 $ 431,649 $ 710,315 $ 431,649 Other receivables, net 6,028 4,864 6,028 4,864 Total accounts receivable, net $ 716,343 $ 436,513 $ 716,343 $ 436,513 A summary of other current assets is as follows: The Partnership WES Operating thousands June 30, December 31, June 30, December 31, NGLs inventory $ 1,514 $ 3,370 $ 1,514 $ 3,370 Imbalance receivables 25,894 25,309 25,894 25,309 Prepaid insurance 1,550 10,369 276 8,538 Contract assets 16,512 5,307 16,512 5,307 Other 4,196 1,897 4,080 1,897 Total other current assets $ 49,666 $ 46,252 $ 48,276 $ 44,421 A summary of accrued liabilities is as follows: The Partnership WES Operating thousands June 30, December 31, June 30, December 31, Accrued interest expense $ 112,028 $ 131,177 $ 112,028 $ 131,177 Short - term asset retirement obligations 9,541 9,934 9,541 9,934 Short - term remediation and reclamation obligations 7,147 7,454 7,147 7,454 Income taxes payable 2,892 1,516 2,892 1,516 Contract liabilities 9,142 27,763 9,142 27,763 Accrued payroll and benefits 34,072 41,311 — 20 Other 42,995 44,094 38,493 32,829 Total accrued liabilities $ 217,817 $ 263,249 $ 179,243 $ 210,693

Debt and Interest Expense

Debt and Interest Expense	6 Months Ended
	Jun. 30, 2022
Debt Instruments [Abstract]
Debt and Interest Expense	10. DEBT AND INTEREST EXPENSE WES Operating is the borrower for all outstanding debt and is expected to be the borrower for all future debt issuances. The following table presents the outstanding debt: June 30, 2022 December 31, 2021 thousands Principal Carrying Fair Value (1) Principal Carrying Fair Value (1) Short - term debt 4.000% Senior Notes due 2022 $ — $ — $ — $ 502,246 $ 502,138 $ 505,153 Finance lease liabilities 2,613 2,613 2,613 3,794 3,794 3,794 Total short - term debt $ 2,613 $ 2,613 $ 2,613 $ 506,040 $ 505,932 $ 508,947 Long - term debt Floating - Rate Senior Notes due 2023 $ 213,138 $ 212,879 $ 212,387 $ 213,138 $ 212,642 $ 213,072 3.100% Senior Notes due 2025 730,706 727,322 679,964 732,106 728,096 764,815 3.950% Senior Notes due 2025 399,163 396,372 377,181 399,163 395,928 418,506 4.650% Senior Notes due 2026 474,242 471,892 446,852 474,242 471,629 516,473 4.500% Senior Notes due 2028 400,000 396,418 362,556 400,000 396,145 437,673 4.750% Senior Notes due 2028 400,000 397,137 366,112 400,000 396,938 444,550 4.050% Senior Notes due 2030 1,200,000 1,190,835 1,043,296 1,200,000 1,190,339 1,323,595 5.450% Senior Notes due 2044 600,000 593,806 499,525 600,000 593,733 717,804 5.300% Senior Notes due 2048 700,000 687,378 566,236 700,000 687,265 844,223 5.500% Senior Notes due 2048 350,000 342,720 288,601 350,000 342,659 418,907 5.250% Senior Notes due 2050 1,000,000 983,824 809,805 1,000,000 983,709 1,183,514 RCF 255,000 255,000 255,000 — — — Finance lease liabilities 540 540 540 1,533 1,533 1,533 Total long - term debt $ 6,722,789 $ 6,656,123 $ 5,908,055 $ 6,470,182 $ 6,400,616 $ 7,284,665 _________________________________________________________________________________________ (1) Fair value is measured using the market approach and Level - 2 fair value inputs. 10. DEBT AND INTEREST EXPENSE Debt activity. The following table presents the debt activity for the six months ended June 30, 2022: thousands Carrying Value Balance at December 31, 2021 $ 6,906,548 RCF borrowings 635,000 Repayments of RCF borrowings (380,000) Repayment of 4.000% Senior Notes due 2022 (502,246) Repayment of 3.100% Senior Notes due 2025 (1,400) Finance lease liabilities (2,172) Other 3,006 Balance at June 30, 2022 $ 6,658,736 WES Operating Senior Notes. In mid - January 2020, WES Operating issued the Fixed - Rate 3.100% Senior Notes due 2025, 4.050% Senior Notes due 2030, and 5.250% Senior Notes due 2050 (collectively referred to as the “Fixed - Rate Senior Notes”) and the Floating - Rate Senior Notes due 2023 (the “Floating - Rate Senior Notes”). Including the effects of the issuance prices, underwriting discounts, and interest - rate adjustments, the effective interest rates of the Senior Notes due 2025, 2030, and 2050, were 3.790%, 4.671%, and 5.869%, respectively, at June 30, 2022, and were 4.542%, 5.424%, and 6.629%, respectively, at June 30, 2021. The interest rate on the Floating - Rate Senior Notes was 2.12% and 2.29% at June 30, 2022 and 2021, respectively. The effective interest rate of these notes is subject to adjustment from time to time due to a change in credit rating. During the second quarter of 2022, WES Operating (i) redeemed the total principal amount outstanding of the 4.000% Senior Notes due 2022 at par value and (ii) purchased and retired $1.4 million of the 3.100% Senior Notes due 2025 via open-market repurchases. During the first quarter of 2021, WES Operating redeemed the total principal amount outstanding of the 5.375% Senior Notes due 2021 at par value, pursuant to the optional redemption terms in WES Operating’s indenture. As of June 30, 2022, the Floating-Rate Senior Notes were classified as long-term debt on the consolidated balance sheet as WES Operating has the ability and intent to refinance these obligations using long-term debt. At June 30, 2022, WES Operating was in compliance with all covenants under the relevant governing indentures. Revolving credit facility. In June 2022, WES Operating entered into an amendment to its $2.0 billion senior unsecured revolving credit facility (“RCF”), which is expandable to a maximum of $2.5 billion, to, among other things, (i) extend the maturity date applicable to the loans and commitments of certain lenders totaling $1.6 billion to February 2026, (ii) provide for the ability of WES Operating to extend the maturity date by one year on up to two additional occasions, (iii) provide that loans under the RCF with a fixed interest rate for a specified period bear interest based on the Secured Overnight Financing Rate (“SOFR”) instead of the London Interbank Offered Rate (“LIBOR”), and (iv) include an additional level of pricing if WES Operating’s senior unsecured debt rating is less than or equal to BB/Ba2/BB (Standard and Poor’s / Moody’s Investors Service / Fitch Ratings). The non - extending lender’s commitments mature in February 2025 and represent $400.0 million out of $2.0 billion of total commitments from all lenders. As of June 30, 2022, there were $255.0 million of outstanding borrowings and $5.2 million of outstanding letters of credit, resulting in $1.7 billion of available borrowing capacity under the RCF. As of June 30, 2022 and 2021, the interest rate on any outstanding RCF borrowings was 3.12% and 1.60%, respectively. The facility - fee rate was 0.25% at June 30, 2022 and 2021. At June 30, 2022, WES Operating was in compliance with all covenants under the RCF. 10. DEBT AND INTEREST EXPENSE Interest expense. The following table summarizes the amounts included in interest expense: Three Months Ended Six Months Ended thousands 2022 2021 2022 2021 Long - term and short - term debt $ (78,577) $ (92,487) $ (162,005) $ (188,209) Finance lease liabilities (31) (292) (73) (590) Commitment fees and amortization of debt-related costs (3,068) (3,179) (6,100) (6,517) Capitalized interest 904 668 1,951 1,533 Interest expense $ (80,772) $ (95,290) $ (166,227) $ (193,783)

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	11. COMMITMENTS AND CONTINGENCIES Environmental obligations. The Partnership is subject to various environmental-remediation obligations arising from federal, state, and local regulations regarding air and water quality, hazardous and solid waste disposal, and other environmental matters. As of June 30, 2022 and December 31, 2021, the consolidated balance sheets included $9.0 million and $10.1 million, respectively, of liabilities for remediation and reclamation obligations. The current portion of these amounts is included in Accrued liabilities, and the long-term portion of these amounts is included in Other liabilities. The majority of payments related to these obligations are expected to be made over the next year. Litigation and legal proceedings. From time to time, the Partnership is involved in legal, tax, regulatory, and other proceedings in various forums regarding performance, contracts, and other matters that arise in the ordinary course of business. Management is not aware of any such proceeding for which the final disposition could have a material adverse effect on the Partnership’s financial condition, results of operations, or cash flows. Other commitments. The Partnership has payment obligations, or commitments, that include, among other things, a revolving credit facility, other third - party long - term debt, obligations related to the Partnership’s capital spending programs, pipeline and offload commitments, and various operating and finance leases. The payment obligations related to the Partnership’s capital spending programs, the majority of which is expected to be paid in the next 12 months, primarily relate to construction, expansion, and asset - integrity projects at the West Texas complex, DBM water systems, DBM oil system, and DJ Basin complex.

Description of Business and B_2

Description of Business and Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 2022
Accounting Policies [Abstract]
Consolidation policy	Basis of presentation. The consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) and include the accounts of the Partnership and entities in which it holds a controlling financial interest, including WES Operating, WES Operating GP, proportionately consolidated interests, and equity investments (see table below). All significant intercompany transactions have been eliminated. The following table outlines the ownership interests and the accounting method of consolidation used in the consolidated financial statements for entities not wholly owned: Percentage Interest Full consolidation Chipeta (1) 75.00 % Proportionate consolidation (2) Springfield system 50.10 % Marcellus Interest systems 33.75 % Equity investments (3) Mi Vida JV LLC (“Mi Vida”) 50.00 % Ranch Westex JV LLC (“Ranch Westex”) 50.00 % Front Range Pipeline LLC (“FRP”) 33.33 % Red Bluff Express Pipeline, LLC (“Red Bluff Express”) 30.00 % Enterprise EF78 LLC (“Mont Belvieu JV”) 25.00 % Rendezvous Gas Services, LLC (“Rendezvous”) 22.00 % Texas Express Pipeline LLC (“TEP”) 20.00 % Texas Express Gathering LLC (“TEG”) 20.00 % Whitethorn Pipeline Company LLC (“Whitethorn LLC”) 20.00 % Saddlehorn Pipeline Company, LLC (“Saddlehorn”) 20.00 % Cactus II Pipeline LLC (“Cactus II”) 15.00 % Panola Pipeline Company, LLC (“Panola”) 15.00 % White Cliffs Pipeline, LLC (“White Cliffs”) 10.00 % _________________________________________________________________________________________ (1) The 25% third - party interest in Chipeta Processing LLC (“Chipeta”) is reflected within noncontrolling interests in the consolidated financial statements. See Noncontrolling interests below. (2) The Partnership proportionately consolidates its associated share of the assets, liabilities, revenues, and expenses attributable to these assets. (3) Investments in non - controlled entities over which the Partnership exercises significant influence are accounted for under the equity method of accounting. “Equity - investment throughput” refers to the Partnership’s share of average throughput for these investments. Certain information and note disclosures commonly included in annual financial statements have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Accordingly, the accompanying consolidated financial statements and notes should be read in conjunction with the Partnership’s 2021 Form 10-K, as filed with the SEC on February 23, 2022. Management believes that the disclosures made are adequate to make the information not misleading. 1. DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION The consolidated financial results of WES Operating are included in the Partnership’s consolidated financial statements. Throughout these notes to consolidated financial statements, and to the extent material, any differences between the consolidated financial results of the Partnership and WES Operating are discussed separately. The Partnership’s consolidated financial statements differ from those of WES Operating primarily as a result of (i) the presentation of noncontrolling interest ownership (see Noncontrolling interests below), (ii) the elimination of WES Operating GP’s investment in WES Operating with WES Operating GP’s underlying capital account, (iii) the general and administrative expenses incurred by the Partnership, which are separate from, and in addition to, those incurred by WES Operating, (iv) the inclusion of the impact of Partnership equity balances and Partnership distributions, and (v) transactions between the Partnership and WES Operating that eliminate upon consolidation. Presentation of the Partnership’s assets. The Partnership’s assets include assets owned and ownership interests accounted for by the Partnership under the equity method of accounting, through its 98.0% partnership interest in WES Operating, as of June 30, 2022 (see Note 7 ). The Partnership also owns and controls the entire non - economic general partner interest in WES Operating GP, and the Partnership’s general partner is owned by Occidental. Noncontrolling interests. The Partnership’s noncontrolling interests in the consolidated financial statements consist of (i) the 25% third - party interest in Chipeta and (ii) the 2.0% Occidental subsidiary - owned limited partner interest in WES Operating. WES Operating’s noncontrolling interest in the consolidated financial statements consists of the 25% third - party interest in Chipeta. See Note 5.
Use of estimates policy	Use of estimates. In preparing financial statements in accordance with GAAP, management makes informed judgments and estimates that affect the reported amounts of assets, liabilities, revenues, and expenses. Management evaluates its estimates and related assumptions regularly, using historical experience and other reasonable methods. Changes in facts and circumstances or additional information may result in revised estimates, and actual results may differ from these estimates. Effects on the business, financial condition, and results of operations resulting from revisions to estimates are recognized when the facts that give rise to the revisions become known. The information included herein reflects all normal recurring adjustments which are, in the opinion of management, necessary for a fair presentation of the consolidated financial statements, and certain prior-period amounts have been reclassified to conform to the current-year presentation.
Segments policy	Segments. The Partnership’s operations continue to be organized into a single operating segment, the assets of which gather, compress, treat, process, and transport natural gas; gather, stabilize, and transport condensate, NGLs, and crude oil; and gather and dispose of produced water in the United States.
Net income (loss) per common unit policy	Partnership’s net income (loss) per common unit. The common and general partner unitholders’ allocation of net income (loss) attributable to the Partnership was equal to their cash distributions plus their respective allocations of undistributed earnings or losses in accordance with their weighted - average ownership percentage during each period using the two - class method. The Partnership’s basic net income (loss) per common unit is calculated by dividing the limited partners’ interest in net income (loss) by the weighted - average number of common units outstanding during the period. Diluted net income (loss) per common unit includes the effect of outstanding units issued under the Partnership’s long-term incentive plans. 5. EQUITY AND PARTNERS’ CAPITAL The following table provides a reconciliation between basic and diluted net income (loss) per common unit: Three Months Ended Six Months Ended thousands except per-unit amounts 2022 2021 2022 2021 Net income (loss) Limited partners’ interest in net income (loss) $ 299,550 $ 226,295 $ 601,484 $ 408,093 Weighted-average common units outstanding Basic 403,027 413,070 403,140 413,087 Dilutive effect of non-vested phantom units 1,135 650 1,140 470 Diluted 404,162 413,720 404,280 413,557 Excluded due to anti-dilutive effect 618 240 731 333 Net income (loss) per common unit Basic $ 0.74 $ 0.55 $ 1.49 $ 0.99 Diluted $ 0.74 $ 0.55 $ 1.49 $ 0.99 WES Operating’s net income (loss) per common unit. Net income (loss) per common unit for WES Operating is not calculated because it has no publicly traded units.

Description of Business and B_3

Description of Business and Basis of Presentation (Tables)	6 Months Ended
	Jun. 30, 2022
Accounting Policies [Abstract]
Assets and Investments Table	As of June 30, 2022, the Partnership’s assets and investments consisted of the following: Wholly Operated Non-Operated Equity Gathering systems (1) 17 2 3 1 Treating facilities 37 3 — — Natural - gas processing plants/trains 24 3 — 5 NGLs pipelines 2 — — 5 Natural - gas pipelines 5 — — 1 Crude - oil pipelines 3 1 — 4 _________________________________________________________________________________________ (1) Includes the DBM water systems.
Ownership Interests and Method of Consolidation Table	The following table outlines the ownership interests and the accounting method of consolidation used in the consolidated financial statements for entities not wholly owned: Percentage Interest Full consolidation Chipeta (1) 75.00 % Proportionate consolidation (2) Springfield system 50.10 % Marcellus Interest systems 33.75 % Equity investments (3) Mi Vida JV LLC (“Mi Vida”) 50.00 % Ranch Westex JV LLC (“Ranch Westex”) 50.00 % Front Range Pipeline LLC (“FRP”) 33.33 % Red Bluff Express Pipeline, LLC (“Red Bluff Express”) 30.00 % Enterprise EF78 LLC (“Mont Belvieu JV”) 25.00 % Rendezvous Gas Services, LLC (“Rendezvous”) 22.00 % Texas Express Pipeline LLC (“TEP”) 20.00 % Texas Express Gathering LLC (“TEG”) 20.00 % Whitethorn Pipeline Company LLC (“Whitethorn LLC”) 20.00 % Saddlehorn Pipeline Company, LLC (“Saddlehorn”) 20.00 % Cactus II Pipeline LLC (“Cactus II”) 15.00 % Panola Pipeline Company, LLC (“Panola”) 15.00 % White Cliffs Pipeline, LLC (“White Cliffs”) 10.00 % _________________________________________________________________________________________ (1) The 25% third - party interest in Chipeta Processing LLC (“Chipeta”) is reflected within noncontrolling interests in the consolidated financial statements. See Noncontrolling interests below. (2) The Partnership proportionately consolidates its associated share of the assets, liabilities, revenues, and expenses attributable to these assets. (3) Investments in non - controlled entities over which the Partnership exercises significant influence are accounted for under the equity method of accounting. “Equity - investment throughput” refers to the Partnership’s share of average throughput for these investments.

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	6 Months Ended
	Jun. 30, 2022
Revenue from Contract with Customer [Abstract]
Summary of Revenue from Contracts with Customers Table	The following table summarizes revenue from contracts with customers: Three Months Ended Six Months Ended thousands 2022 2021 2022 2021 Revenue from customers Service revenues – fee based $ 655,952 $ 572,607 $ 1,287,550 $ 1,102,020 Service revenues – product based 70,498 27,803 111,365 59,455 Product sales 149,736 72,256 235,325 143,061 Total revenue from customers 876,186 672,666 1,634,240 1,304,536 Revenue from other than customers Lease revenue (1) — 46,378 — 89,240 Other 233 87 476 329 Total revenues and other $ 876,419 $ 719,131 $ 1,634,716 $ 1,394,105 _________________________________________________________________________________________ (1) Includes fixed - and variable - lease revenue from an operating and maintenance agreement entered into with Occidental. See Operating leases within Note 6.
Contract Balances Tables	The following table summarizes activity related to contract assets from contracts with customers: thousands Contract assets balance at December 31, 2021 $ 22,557 Amounts transferred to Accounts receivable, net that were included in the contract assets balance at the beginning of the period (1) (336) Additional estimated revenues recognized (2) 12,444 Contract assets balance at June 30, 2022 $ 34,665 Contract assets at June 30, 2022 Other current assets $ 16,512 Other assets 18,153 Total contract assets from contracts with customers $ 34,665 _________________________________________________________________________________________ (1) Includes $(0.1) million for the three months ended June 30, 2022. (2) Includes $5.9 million for the three months ended June 30, 2022. thousands Contract liabilities balance at December 31, 2021 $ 313,146 Cash received or receivable, excluding revenues recognized during the period (1) 28,036 Revenues recognized that were included in the contract liability balance at the beginning of the period (2) (13,932) Contract liabilities balance at June 30, 2022 $ 327,250 Contract liabilities at June 30, 2022 Accrued liabilities $ 9,142 Other liabilities 318,108 Total contract liabilities from contracts with customers $ 327,250 _________________________________________________________________________________________ (1) Includes $19.8 million for the three months ended June 30, 2022. (2) Includes $(2.7) million for the three months ended June 30, 2022.
Expected Revenue Recognition from Satisfaction of Performance Obligations Table	Therefore, the following table represents only a portion of expected future revenues from existing contracts as most future revenues from customers are dependent on future variable customer volumes and, in some cases, variable commodity prices for those volumes. thousands Remainder of 2022 $ 550,444 2023 1,046,368 2024 1,020,299 2025 936,523 2026 808,712 Thereafter 2,176,400 Total $ 6,538,746

Partnership Distributions (Tabl

Partnership Distributions (Tables)	6 Months Ended
	Jun. 30, 2022
Distributions Made to Members or Limited Partners [Abstract]
Cash Distributions Tables	The Board of Directors of the general partner (the “Board”) declared the following cash distributions to the Partnership’s unitholders for the periods presented: thousands except per-unit amounts Quarters Ended Total Quarterly Total Quarterly Distribution Record 2021 March 31 $ 0.31500 $ 132,969 May 14, 2021 April 30, 2021 June 30 0.31900 134,662 August 13, 2021 July 30, 2021 September 30 0.32300 134,862 November 12, 2021 November 1, 2021 December 31 0.32700 134,749 February 14, 2022 January 31, 2022 2022 March 31 $ 0.50000 $ 206,197 May 13, 2022 May 2, 2022 June 30 0.50000 197,744 August 12, 2022 August 1, 2022 thousands Quarters Ended Total Quarterly Distribution 2021 March 31 $ 137,030 May 2021 June 30 140,217 August 2021 September 30 140,217 November 2021 December 31 140,217 February 2022 2022 March 31 $ 213,513 May 2022 June 30 213,513 August 2022

Equity and Partners' Capital (T

Equity and Partners' Capital (Tables)	6 Months Ended
	Jun. 30, 2022
Partners' Capital Notes [Abstract]
Calculation of Net Income (Loss) Per Unit Table	The following table provides a reconciliation between basic and diluted net income (loss) per common unit: Three Months Ended Six Months Ended thousands except per-unit amounts 2022 2021 2022 2021 Net income (loss) Limited partners’ interest in net income (loss) $ 299,550 $ 226,295 $ 601,484 $ 408,093 Weighted-average common units outstanding Basic 403,027 413,070 403,140 413,087 Dilutive effect of non-vested phantom units 1,135 650 1,140 470 Diluted 404,162 413,720 404,280 413,557 Excluded due to anti-dilutive effect 618 240 731 333 Net income (loss) per common unit Basic $ 0.74 $ 0.55 $ 1.49 $ 0.99 Diluted $ 0.74 $ 0.55 $ 1.49 $ 0.99

Related-Party Transactions (Tab

Related-Party Transactions (Tables)	6 Months Ended
	Jun. 30, 2022
Related Party Transaction [Line Items]
Related-Party Transactions Tables	The following tables summarize material related - party transactions included in the Partnership’s consolidated financial statements: Consolidated statements of operations Three Months Ended Six Months Ended thousands 2022 2021 2022 2021 Revenues and other Service revenues – fee based $ 428,631 $ 402,684 $ 843,530 $ 770,159 Service revenues – product based 21,808 3,658 24,051 8,163 Product sales 6,342 9,101 17,909 15,372 Total revenues and other 456,781 415,443 885,490 793,694 Equity income, net – related parties (1) 48,464 58,666 98,071 110,831 Operating expenses Cost of product (2) (12,148) 18,937 (31,691) 36,584 Operation and maintenance 702 2,915 643 21,037 General and administrative (3) 233 7,102 2,208 11,195 Total operating expenses (11,213) 28,954 (28,840) 68,816 _________________________________________________________________________________________ (1) See Note 7 . (2) Includes related-party natural - gas and NGLs imbalances. (3) Includes (i) amounts charged by Occidental pursuant to the shared services agreement (see Services Agreement within this Note 6 ) and (ii) equity - based compensation expense allocated to the Partnership by Occidental, which is not reimbursed to Occidental and is reflected as a contribution to partners’ capital in the consolidated statements of equity and partners’ capital (see Incentive Plans within this Note 6 ). 6. RELATED-PARTY TRANSACTIONS Consolidated balance sheets thousands June 30, December 31, Assets Accounts receivable, net $ 322,715 $ 180,205 Other current assets 14,591 12,490 Equity investments (1) 1,148,487 1,167,187 Other assets 45,921 45,494 Total assets 1,531,714 1,405,376 Liabilities Accounts and imbalance payables 47,175 49,242 Accrued liabilities 4,136 13,914 Other liabilities 237,008 207,365 Total liabilities 288,319 270,521 _________________________________________________________________________________________ (1) See Note 7 . Consolidated statements of cash flows Six Months Ended thousands 2022 2021 Distributions from equity - investment earnings – related parties $ 96,404 $ 110,763 Capital expenditures — (2,000) Contributions to equity investments – related parties (5,040) (3,508) Distributions from equity investments in excess of cumulative earnings – related parties 25,407 21,373 Distributions to Partnership unitholders (1) (165,633) (130,518) Distributions to WES Operating unitholders (2) (8,812) (5,292) Net contributions from (distributions to) related parties 784 4,508 _________________________________________________________________________________________ (1) Represents distributions paid to Occidental pursuant to the partnership agreement of the Partnership (see Note 4 and Note 5 ). (2) Represents distributions paid to Occidental, through its ownership of WGRAH, pursuant to WES Operating’s partnership agreement (see Note 4 and Note 5 ).
WES Operating [Member]
Related Party Transaction [Line Items]
Related-Party Transactions Tables	The following tables summarize material related - party transactions for WES Operating (which are included in the Partnership’s consolidated financial statements) to the extent the amounts differ materially from the Partnership’s consolidated financial statements: Consolidated statements of operations Three Months Ended Six Months Ended thousands 2022 2021 2022 2021 General and administrative (1) $ 919 $ 7,699 $ 3,867 $ 12,286 _________________________________________________________________________________________ (1) Includes (i) amounts charged by Occidental pursuant to the shared services agreement (see Services Agreement within this Note 6 ), (ii) equity - based compensation expense allocated to WES Operating by Occidental, which is not reimbursed to Occidental and is reflected as a contribution to partners’ capital in the consolidated statements of equity and partners’ capital (see Incentive Plans within this Note 6 ), and (iii) an intercompany service fee between the Partnership and WES Operating. Consolidated balance sheets thousands June 30, December 31, Other current assets $ 14,475 $ 12,490 Other assets 45,235 45,494 Accounts and imbalance payables (1) 73,392 97,749 Accrued liabilities 3,819 13,597 _________________________________________________________________________________________ (1) Includes balances related to transactions between the Partnership and WES Operating. Consolidated statements of cash flows Six Months Ended thousands 2022 2021 Distributions to WES Operating unitholders (1) $ (440,465) $ (264,500) _________________________________________________________________________________________ (1) Represents distributions paid to the Partnership and Occidental, through its ownership of WGRAH, pursuant to WES Operating’s partnership agreement. See Note 4 and Note 5 .

Equity Investments (Tables)

Equity Investments (Tables)	6 Months Ended
	Jun. 30, 2022
Equity Method Investments and Joint Ventures [Abstract]
Equity Investments Table	The following table presents the financial statement impact of the Partnership’s equity investments for the six months ended June 30, 2022: thousands Balance at December 31, 2021 Equity Contributions Distributions Distributions in excess of cumulative earnings (1) Balance at June 30, 2022 White Cliffs $ 40,753 $ 438 $ — $ (147) $ (1,773) $ 39,271 Rendezvous 22,075 (1,304) — (326) (1,063) 19,382 Mont Belvieu JV 96,728 14,500 — (14,605) (3,288) 93,335 TEG 16,116 3,111 — (3,004) — 16,223 TEP 188,925 21,552 — (21,678) (1,457) 187,342 FRP 196,632 21,318 — (21,584) (2,195) 194,171 Whitethorn LLC 149,690 63 255 2,950 (1,565) 151,393 Cactus II 171,294 7,265 — (7,349) (6,563) 164,647 Saddlehorn 110,441 11,169 — (10,934) (815) 109,861 Panola 20,044 1,052 — (1,052) (864) 19,180 Mi Vida 51,763 7,156 — (7,209) (3,104) 48,606 Ranch Westex 979 4,688 — (4,688) (2,083) (1,104) Red Bluff Express 101,747 7,063 4,785 (6,778) (637) 106,180 Total $ 1,167,187 $ 98,071 $ 5,040 $ (96,404) $ (25,407) $ 1,148,487 _________________________________________________________________________________________ (1) Distributions in excess of cumulative earnings, classified as investing cash flows in the consolidated statements of cash flows, are calculated on an individual - investment basis.

Property, Plant, and Equipment

Property, Plant, and Equipment (Tables)	6 Months Ended
	Jun. 30, 2022
Property, Plant and Equipment [Abstract]
Property, Plant, and Equipment Table	A summary of the historical cost of property, plant, and equipment is as follows: thousands Estimated Useful Life June 30, December 31, Land N/A $ 10,955 $ 10,955 Gathering systems – pipelines 30 years 5,452,285 5,386,003 Gathering systems – compressors 15 years 2,241,600 2,172,953 Processing complexes and treating facilities 25 years 3,386,213 3,375,317 Transportation pipeline and equipment 6 to 45 years 169,365 169,356 Produced - water disposal systems 20 years 890,723 882,527 Assets under construction N/A 137,600 98,473 Other 3 to 40 years 769,948 750,494 Total property, plant, and equipment 13,058,689 12,846,078 Less accumulated depreciation 4,581,122 4,333,171 Net property, plant, and equipment $ 8,477,567 $ 8,512,907

Selected Components of Workin_2

Selected Components of Working Capital (Tables)	6 Months Ended
	Jun. 30, 2022
Selected Components Of Working Capital [Abstract]
Accounts Receivable, Net Table	A summary of accounts receivable, net is as follows: The Partnership WES Operating thousands June 30, December 31, June 30, December 31, Trade receivables, net $ 710,315 $ 431,649 $ 710,315 $ 431,649 Other receivables, net 6,028 4,864 6,028 4,864 Total accounts receivable, net $ 716,343 $ 436,513 $ 716,343 $ 436,513
Other Current Assets Table	A summary of other current assets is as follows: The Partnership WES Operating thousands June 30, December 31, June 30, December 31, NGLs inventory $ 1,514 $ 3,370 $ 1,514 $ 3,370 Imbalance receivables 25,894 25,309 25,894 25,309 Prepaid insurance 1,550 10,369 276 8,538 Contract assets 16,512 5,307 16,512 5,307 Other 4,196 1,897 4,080 1,897 Total other current assets $ 49,666 $ 46,252 $ 48,276 $ 44,421
Accrued Liabilities Table	A summary of accrued liabilities is as follows: The Partnership WES Operating thousands June 30, December 31, June 30, December 31, Accrued interest expense $ 112,028 $ 131,177 $ 112,028 $ 131,177 Short - term asset retirement obligations 9,541 9,934 9,541 9,934 Short - term remediation and reclamation obligations 7,147 7,454 7,147 7,454 Income taxes payable 2,892 1,516 2,892 1,516 Contract liabilities 9,142 27,763 9,142 27,763 Accrued payroll and benefits 34,072 41,311 — 20 Other 42,995 44,094 38,493 32,829 Total accrued liabilities $ 217,817 $ 263,249 $ 179,243 $ 210,693

Debt and Interest Expense (Tabl

Debt and Interest Expense (Tables)	6 Months Ended
	Jun. 30, 2022
Debt Instruments [Abstract]
Debt Outstanding and Debt Activity Tables	The following table presents the outstanding debt: June 30, 2022 December 31, 2021 thousands Principal Carrying Fair Value (1) Principal Carrying Fair Value (1) Short - term debt 4.000% Senior Notes due 2022 $ — $ — $ — $ 502,246 $ 502,138 $ 505,153 Finance lease liabilities 2,613 2,613 2,613 3,794 3,794 3,794 Total short - term debt $ 2,613 $ 2,613 $ 2,613 $ 506,040 $ 505,932 $ 508,947 Long - term debt Floating - Rate Senior Notes due 2023 $ 213,138 $ 212,879 $ 212,387 $ 213,138 $ 212,642 $ 213,072 3.100% Senior Notes due 2025 730,706 727,322 679,964 732,106 728,096 764,815 3.950% Senior Notes due 2025 399,163 396,372 377,181 399,163 395,928 418,506 4.650% Senior Notes due 2026 474,242 471,892 446,852 474,242 471,629 516,473 4.500% Senior Notes due 2028 400,000 396,418 362,556 400,000 396,145 437,673 4.750% Senior Notes due 2028 400,000 397,137 366,112 400,000 396,938 444,550 4.050% Senior Notes due 2030 1,200,000 1,190,835 1,043,296 1,200,000 1,190,339 1,323,595 5.450% Senior Notes due 2044 600,000 593,806 499,525 600,000 593,733 717,804 5.300% Senior Notes due 2048 700,000 687,378 566,236 700,000 687,265 844,223 5.500% Senior Notes due 2048 350,000 342,720 288,601 350,000 342,659 418,907 5.250% Senior Notes due 2050 1,000,000 983,824 809,805 1,000,000 983,709 1,183,514 RCF 255,000 255,000 255,000 — — — Finance lease liabilities 540 540 540 1,533 1,533 1,533 Total long - term debt $ 6,722,789 $ 6,656,123 $ 5,908,055 $ 6,470,182 $ 6,400,616 $ 7,284,665 _________________________________________________________________________________________ (1) Fair value is measured using the market approach and Level - 2 fair value inputs. 10. DEBT AND INTEREST EXPENSE Debt activity. The following table presents the debt activity for the six months ended June 30, 2022: thousands Carrying Value Balance at December 31, 2021 $ 6,906,548 RCF borrowings 635,000 Repayments of RCF borrowings (380,000) Repayment of 4.000% Senior Notes due 2022 (502,246) Repayment of 3.100% Senior Notes due 2025 (1,400) Finance lease liabilities (2,172) Other 3,006 Balance at June 30, 2022 $ 6,658,736
Interest Expense Table	The following table summarizes the amounts included in interest expense: Three Months Ended Six Months Ended thousands 2022 2021 2022 2021 Long - term and short - term debt $ (78,577) $ (92,487) $ (162,005) $ (188,209) Finance lease liabilities (31) (292) (73) (590) Commitment fees and amortization of debt-related costs (3,068) (3,179) (6,100) (6,517) Capitalized interest 904 668 1,951 1,533 Interest expense $ (80,772) $ (95,290) $ (166,227) $ (193,783)

Description of Business and B_4

Description of Business and Basis of Presentation - Assets and Investments Table (Details)	Jun. 30, 2022 unit
Wholly Owned and Operated [Member] | Gathering Systems [Member]
Assets [Line Items]
Assets, number of units	17
Wholly Owned and Operated [Member] | Treating Facilities [Member]
Assets [Line Items]
Assets, number of units	37
Wholly Owned and Operated [Member] | Natural-Gas Processing Plants/Trains [Member]
Assets [Line Items]
Assets, number of units	24
Wholly Owned and Operated [Member] | Natural-Gas Liquids Pipelines [Member]
Assets [Line Items]
Assets, number of units	2
Wholly Owned and Operated [Member] | Natural-Gas Pipelines [Member]
Assets [Line Items]
Assets, number of units	5
Wholly Owned and Operated [Member] | Crude-Oil Pipelines [Member]
Assets [Line Items]
Assets, number of units	3
Operated Interests [Member] | Gathering Systems [Member]
Assets [Line Items]
Assets, number of units	2
Operated Interests [Member] | Treating Facilities [Member]
Assets [Line Items]
Assets, number of units	3
Operated Interests [Member] | Natural-Gas Processing Plants/Trains [Member]
Assets [Line Items]
Assets, number of units	3
Operated Interests [Member] | Crude-Oil Pipelines [Member]
Assets [Line Items]
Assets, number of units	1
Non-Operated Interests [Member] | Gathering Systems [Member]
Assets [Line Items]
Assets, number of units	3
Equity Interests [Member] | Gathering Systems [Member]
Assets [Line Items]
Assets, number of units	1
Equity Interests [Member] | Natural-Gas Processing Plants/Trains [Member]
Assets [Line Items]
Assets, number of units	5
Equity Interests [Member] | Natural-Gas Liquids Pipelines [Member]
Assets [Line Items]
Assets, number of units	5
Equity Interests [Member] | Natural-Gas Pipelines [Member]
Assets [Line Items]
Assets, number of units	1
Equity Interests [Member] | Crude-Oil Pipelines [Member]
Assets [Line Items]
Assets, number of units	4

Description of Business and B_5

Description of Business and Basis of Presentation - Ownership Interests and Method of Consolidation Table (Details)	6 Months Ended
	Jun. 30, 2022
Chipeta [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Ownership interest by noncontrolling interest owner	25%
Full Consolidation [Member] | Chipeta [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Percentage ownership interest	75%
Proportionate Consolidation [Member] | Springfield System [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Percentage ownership interest	50.10%
Proportionate Consolidation [Member] | Marcellus Interest Systems [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Percentage ownership interest	33.75%
Equity Investments [Member] | Mi Vida [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Equity-investment ownership percentage	50%
Equity Investments [Member] | Ranch Westex [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Equity-investment ownership percentage	50%
Equity Investments [Member] | Front Range Pipeline [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Equity-investment ownership percentage	33.33%
Equity Investments [Member] | Red Bluff Express [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Equity-investment ownership percentage	30%
Equity Investments [Member] | Mont Belvieu JV [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Equity-investment ownership percentage	25%
Equity Investments [Member] | Rendezvous [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Equity-investment ownership percentage	22%
Equity Investments [Member] | Texas Express Pipeline [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Equity-investment ownership percentage	20%
Equity Investments [Member] | Texas Express Gathering [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Equity-investment ownership percentage	20%
Equity Investments [Member] | Whitethorn LLC [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Equity-investment ownership percentage	20%
Equity Investments [Member] | Saddlehorn [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Equity-investment ownership percentage	20%
Equity Investments [Member] | Cactus II [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Equity-investment ownership percentage	15%
Equity Investments [Member] | Panola [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Equity-investment ownership percentage	15%
Equity Investments [Member] | White Cliffs [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Equity-investment ownership percentage	10%

Description of Business and B_6

Description of Business and Basis of Presentation - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Long-Term Incentive Plans [Member]
Equity-based compensation, number of units issued			568,984
Equity-based compensation, expense	$ 6.8	$ 4.7	$ 12.6	$ 8.3
WES Operating [Member]
Ownership interest by noncontrolling interest owner	2%		2%
Chipeta [Member]
Ownership interest by noncontrolling interest owner	25%		25%
WES [Member] | WES Operating [Member]
Ownership interest			98%

Revenue from Contracts with C_3

Revenue from Contracts with Customers - Revenue From Contracts With Customers Table (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation of Revenue [Line Items]
Revenue from customers		$ 876,186	$ 672,666	$ 1,634,240	$ 1,304,536
Revenue from other than customers, other		233	87	476	329
Total revenues and other	[1]	876,419	719,131	1,634,716	1,394,105
Service Revenues - Fee Based [Member]
Disaggregation of Revenue [Line Items]
Revenue from customers		655,952	572,607	1,287,550	1,102,020
Total revenues and other		655,952	618,985	1,287,550	1,191,260
Service Revenues - Product Based [Member]
Disaggregation of Revenue [Line Items]
Revenue from customers		70,498	27,803	111,365	59,455
Total revenues and other		70,498	27,803	111,365	59,455
Product Sales [Member]
Disaggregation of Revenue [Line Items]
Revenue from customers		149,736	72,256	235,325	143,061
Total revenues and other		149,736	72,256	235,325	143,061
Lease Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from other than customers		$ 0	$ 46,378	$ 0	$ 89,240
[1] Total revenues and other includes related-party amounts of $456.8 million and $885.5 million for the three and six months ended June 30, 2022, respectively, and $415.4 million and $793.7 million for the three and six months ended June 30, 2021, respectively. See Note 6 .

Revenue from Contracts with C_4

Revenue from Contracts with Customers - Contract Assets Table (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Change in Contracts with Customer, Asset [Roll Forward]
Contract assets balance at beginning of year		$ 22,557
Amounts transferred to Accounts receivable, net that were included in the contract assets balance at the beginning of the period	$ (100)	(336)
Additional estimated revenues recognized	5,900	12,444
Contract assets balance at end of period	34,665	34,665
Contract Assets [Abstract]
Other current assets	16,512	16,512	$ 5,307
Other assets	18,153	18,153
Total contract assets from contracts with customers	$ 34,665	$ 34,665	$ 22,557

Revenue from Contracts with C_5

Revenue from Contracts with Customers - Contract Liabilities Table (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Change in Contracts with Customer, Liability [Roll Forward]
Contract liabilities balance at begining of year		$ 313,146
Cash received or receivable, excluding revenues recognized during the period	$ 19,800	28,036
Revenues recognized that were included in the contract liability balance at the beginning of the period	(2,700)	(13,932)
Contract liabilities balance at end of period	327,250	327,250
Contract Liabilities [Abstract]
Accrued liabilities	9,142	9,142	$ 27,763
Other liabilities	318,108	318,108
Total contract liabilities from contracts with customers	$ 327,250	$ 327,250	$ 313,146

Revenue from Contracts with C_6

Revenue from Contracts with Customers - Expected Revenues Table (Details) $ in Thousands	Jun. 30, 2022 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligation expected to be satisfied	$ 6,538,746
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligation expected to be satisfied	$ 550,444
Performance obligation expected to be satisfied, expected timing	6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligation expected to be satisfied	$ 1,046,368
Performance obligation expected to be satisfied, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligation expected to be satisfied	$ 1,020,299
Performance obligation expected to be satisfied, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligation expected to be satisfied	$ 936,523
Performance obligation expected to be satisfied, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligation expected to be satisfied	$ 808,712
Performance obligation expected to be satisfied, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligation expected to be satisfied	$ 2,176,400
Performance obligation expected to be satisfied, expected timing

Revenue from Contracts with C_7

Revenue from Contracts with Customers - Additional Information (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Revenue from Contracts with Customer [Line Items]
Accounts receivable, net	$ 716,343	$ 436,513
Customers [Member]
Revenue from Contracts with Customer [Line Items]
Accounts receivable, net	$ 705,300	$ 424,600

Acquisitions and Divestitures -

Acquisitions and Divestitures - Additional Information (Details) - Bison [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2021
Property, Plant and Equipment [Line Items]
Proceeds from sale of assets	$ 1	$ 7	$ 8
Net gain on sale of assets	$ 5.4

Partnership Distributions - Cas

Partnership Distributions - Cash Distributions Tables (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021
Distribution Made to Limited Partner [Line Items]
Total quarterly per-unit distribution	$ 0.50000	$ 0.50000	$ 0.32700	$ 0.32300	$ 0.31900	$ 0.31500
Total quarterly cash distribution	$ 197,744	$ 206,197	$ 134,749	$ 134,862	$ 134,662	$ 132,969
WES Operating [Member]
Distribution Made to Limited Partner [Line Items]
Total quarterly cash distribution	$ 213,513	$ 213,513	$ 140,217	$ 140,217	$ 140,217	$ 137,030

Partnership Distributions - Add

Partnership Distributions - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2022
WES [Member]
Distribution Made to Limited Partner [Line Items]
Partnership agreement day requirement of distribution of available cash		55 days
WES Operating [Member]
Distribution Made to Limited Partner [Line Items]
Additional quarterly cash distribution	$ 86.7

Equity and Partners' Capital -

Equity and Partners' Capital - Calculation of Net Income (Loss) Per Unit Table (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Equity [Abstract]
Limited partners' interest in net income (loss)	[1]	$ 299,550	$ 226,295	$ 601,484	$ 408,093
Weighted-average common units outstanding
Basic	[1]	403,027	413,070	403,140	413,087
Dilutive effect of non-vested phantom units		1,135	650	1,140	470
Diluted	[1]	404,162	413,720	404,280	413,557
Excluded due to anti-dilutive effect		618	240	731	333
Net income (loss) per common unit
Basic	[1]	$ 0.74	$ 0.55	$ 1.49	$ 0.99
Diluted	[1]	$ 0.74	$ 0.55	$ 1.49	$ 0.99
[1] See Note 5.

Equity and Partners' Capital _2

Equity and Partners' Capital - Additional Information (Details) - USD ($)	1 Months Ended		6 Months Ended
	Jul. 29, 2022	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021	Nov. 30, 2020
Schedule of Investments [Line Items]
Common units outstanding			400,248,341		402,993,919
General partner units outstanding			9,060,641		9,060,641
Unit repurchases, authorized amount			$ 1,000,000,000			$ 250,000,000
Unit repurchases, amount			$ 79,217,000	$ 16,241,000
Subsequent Event [Member]
Schedule of Investments [Line Items]
Unit repurchases, number of units	13,800,805
Unit repurchases, amount	$ 346,100,000
Unit repurchases, remaining authorized amount	$ 574,600,000
Public [Member]
Schedule of Investments [Line Items]
Unit repurchases, number of units			3,314,562	1,115,808
Unit repurchases, amount			$ 79,200,000	$ 16,200,000
Occidental [Member] | Subsequent Event [Member]
Schedule of Investments [Line Items]
Unit repurchases, number of units	10,000,000
WES [Member] | Public [Member]
Schedule of Investments [Line Items]
Common units outstanding			199,966,763
Limited partner's interest			48.90%
WES [Member] | Public [Member] | Subsequent Event [Member]
Schedule of Investments [Line Items]
Common units outstanding	196,168,502
Limited partner's interest	49.60%
WES [Member] | WES Operating [Member]
Schedule of Investments [Line Items]
Limited partner's interest			98%
Occidental [Member] | Limited Partner [Member]
Schedule of Investments [Line Items]
Units sold by a related party		11,500,000
Units sold by a related party, over-allotment		1,500,000
Occidental [Member] | WES [Member]
Schedule of Investments [Line Items]
Common units outstanding			200,281,578
Limited partner's interest			48.90%
General partner units outstanding			9,060,641
General partner's interest			2.20%
Occidental [Member] | WES [Member] | Subsequent Event [Member]
Schedule of Investments [Line Items]
Common units outstanding	190,281,578
Limited partner's interest	48.10%
General partner units outstanding	9,060,641
General partner's interest	2.30%
Occidental [Member] | WES Operating [Member]
Schedule of Investments [Line Items]
Limited partner's interest			2%

Related-Party Transactions - Su

Related-Party Transactions - Summary of WES Related-Party Transactions Tables (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Consolidated statements of operations [Abstract]
Revenues and other	[1]	$ 876,419	$ 719,131	$ 1,634,716	$ 1,394,105
Equity income, net – related parties		48,464	58,666	98,071	110,831
Cost of product		148,556	78,044	221,404	167,013
Operation and maintenance		168,153	153,028	297,129	293,360
General and administrative		47,848	44,448	96,450	89,564
Operating expenses	[2]	526,345	444,074	929,795	878,294
Consolidated balance sheets [Abstract]
Accounts receivable, net		716,343		716,343		$ 436,513
Other current assets		49,666		49,666		46,252
Equity investments		1,148,487		1,148,487		1,167,187
Other assets	[3]	165,671		165,671		158,696
Total assets	[4]	11,388,859		11,388,859		11,273,079
Accounts and imbalance payables		492,979		492,979		326,061
Accrued liabilities		217,817		217,817		263,249
Other liabilities		355,163		355,163		325,806
Total liabilities	[5]	8,083,856		8,083,856		8,177,319
Consolidated statements of cash flows [Abstract]
Distributions from equity-investment earnings – related parties				96,404	110,763
Capital expenditures	[6]			(191,357)	(139,928)
Contributions to equity investments – related parties				(5,040)	(3,508)
Distributions from equity investments in excess of cumulative earnings – related parties				25,407	21,373
Distributions to Partnership unitholders	[7]			(340,946)	(264,234)
Net contributions from (distributions to) related parties				784	4,508
Service Revenues - Fee Based [Member]
Consolidated statements of operations [Abstract]
Revenues and other		655,952	618,985	1,287,550	1,191,260
Service Revenues - Product Based [Member]
Consolidated statements of operations [Abstract]
Revenues and other		70,498	27,803	111,365	59,455
Product Sales [Member]
Consolidated statements of operations [Abstract]
Revenues and other		149,736	72,256	235,325	143,061
Related Parties [Member]
Consolidated statements of operations [Abstract]
Revenues and other		456,781	415,443	885,490	793,694
Cost of product		(12,148)	18,937	(31,691)	36,584
Operation and maintenance		702	2,915	643	21,037
General and administrative		233	7,102	2,208	11,195
Operating expenses		(11,213)	28,954	(28,840)	68,816
Consolidated balance sheets [Abstract]
Accounts receivable, net		322,715		322,715		180,205
Other current assets		14,591		14,591		12,490
Other assets		45,921		45,921		45,494
Total assets		1,531,714		1,531,714		1,405,376
Accounts and imbalance payables		47,175		47,175		49,242
Accrued liabilities		4,136		4,136		13,914
Other liabilities		237,008		237,008		207,365
Total liabilities		288,319		288,319		$ 270,521
Consolidated statements of cash flows [Abstract]
Capital expenditures				0	(2,000)
Distributions to Partnership unitholders				(165,633)	(130,518)
Related Parties [Member] | WES Operating [Member]
Consolidated statements of cash flows [Abstract]
Distributions to Partnership unitholders				(8,812)	(5,292)
Related Parties [Member] | Service Revenues - Fee Based [Member]
Consolidated statements of operations [Abstract]
Revenues and other		428,631	402,684	843,530	770,159
Related Parties [Member] | Service Revenues - Product Based [Member]
Consolidated statements of operations [Abstract]
Revenues and other		21,808	3,658	24,051	8,163
Related Parties [Member] | Product Sales [Member]
Consolidated statements of operations [Abstract]
Revenues and other		$ 6,342	$ 9,101	$ 17,909	$ 15,372
[1] Total revenues and other includes related-party amounts of $456.8 million and $885.5 million for the three and six months ended June 30, 2022, respectively, and $415.4 million and $793.7 million for the three and six months ended June 30, 2021, respectively. See Note 6 . Total operating expenses includes related-party amounts of $(11.2) million and $(28.8) million for the three and six months ended June 30, 2022, respectively, and $29.0 million and $68.8 million for the three and six months ended June 30, 2021, respectively. See Note 6 . Other assets includes $12.2 million and $9.8 million of NGLs line - fill inventory as of June 30, 2022, and December 31, 2021, respectively. Other assets also includes $55.3 million and $56.2 million of materials and supplies inventory as of June 30, 2022, and December 31, 2021, respectively. Total assets includes related - party amounts of $1.5 billion and $1.4 billion as of June 30, 2022, and December 31, 2021, respectively, which includes related - party Accounts receivable, net of $322.7 million and $180.2 million as of June 30, 2022, and December 31, 2021, respectively. See Note 6 . Total liabilities includes related - party amounts of $288.3 million and $270.5 million as of June 30, 2022, and December 31, 2021, respectively. See Note 6 . Includes purchases from related parties of $2.0 million for the six months ended June 30, 2021. See Note 6 . See Note 6 .

Related-Party Transactions - _2

Related-Party Transactions - Summary of WES Operating Related-Party Transactions Tables (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Consolidated statements of operations [Abstract]
General and administrative		$ 47,848	$ 44,448	$ 96,450	$ 89,564
Consolidated balance sheets [Abstract]
Other current assets		49,666		49,666		$ 46,252
Other assets	[1]	165,671		165,671		158,696
Accounts and imbalance payables		492,979		492,979		326,061
Accrued liabilities		217,817		217,817		263,249
Consolidated statements of cash flows [Abstract]
Distributions to WES Operating unitholders	[2]			(340,946)	(264,234)
Related Parties [Member]
Consolidated statements of operations [Abstract]
General and administrative		233	7,102	2,208	11,195
Consolidated balance sheets [Abstract]
Other current assets		14,591		14,591		12,490
Other assets		45,921		45,921		45,494
Accounts and imbalance payables		47,175		47,175		49,242
Accrued liabilities		4,136		4,136		13,914
Consolidated statements of cash flows [Abstract]
Distributions to WES Operating unitholders				(165,633)	(130,518)
WES Operating [Member]
Consolidated statements of operations [Abstract]
General and administrative		47,227	42,848	95,088	87,078
Consolidated balance sheets [Abstract]
Other current assets		48,276		48,276		44,421
Other assets	[3]	164,985		164,985		158,696
Accounts and imbalance payables		519,125		519,125		374,443
Accrued liabilities		179,243		179,243		210,693
Consolidated statements of cash flows [Abstract]
Distributions to WES Operating unitholders	[2]			(440,465)	(264,500)
WES Operating [Member] | Related Parties [Member]
Consolidated statements of operations [Abstract]
General and administrative		919	$ 7,699	3,867	12,286
Consolidated balance sheets [Abstract]
Other current assets		14,475		14,475		12,490
Other assets		45,235		45,235		45,494
Accounts and imbalance payables		73,392		73,392		97,749
Accrued liabilities		$ 3,819		3,819		$ 13,597
Consolidated statements of cash flows [Abstract]
Distributions to WES Operating unitholders				$ (440,465)	$ (264,500)
[1] Other assets includes $12.2 million and $9.8 million of NGLs line - fill inventory as of June 30, 2022, and December 31, 2021, respectively. Other assets also includes $55.3 million and $56.2 million of materials and supplies inventory as of June 30, 2022, and December 31, 2021, respectively. See Note 6 . Other assets includes $12.2 million and $9.8 million of NGLs line - fill inventory as of June 30, 2022, and December 31, 2021, respectively. Other assets also includes $55.3 million and $56.2 million of materials and supplies inventory as of June 30, 2022, and December 31, 2021, respectively.

Related-Party Transactions - Ad

Related-Party Transactions - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Related Party Transaction [Line Items]
Operating lease, fixed-lease revenue		$ 44			$ 87.9
Operating lease, variable-lease revenue		2.4			1.3
Related Parties [Member]
Related Party Transaction [Line Items]
Right-of-use asset recognized			$ 30
Related Parties [Member] | Incentive Plans [Member]
Related Party Transaction [Line Items]
Allocated equity-based compensation expense	$ 0.2	$ 2.4		$ 2.2	$ 5.6
Occidental [Member]
Related Party Transaction [Line Items]
Present value of reduced usage fees			$ 30
Natural Gas [Member]
Related Party Transaction [Line Items]
Related-party throughput percentage	35%	36%		36%	35%
Crude Oil and NGLs Member]
Related Party Transaction [Line Items]
Related-party throughput percentage	88%	90%		89%	89%
Produced water [Member]
Related Party Transaction [Line Items]
Related-party throughput percentage	81%	86%		82%	86%

Equity Investments - Equity Inv

Equity Investments - Equity Investments Table (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			$ 1,167,187
Equity income, net	$ 48,464	$ 58,666	98,071	$ 110,831
Contributions			5,040	3,508
Distributions			(96,404)	(110,763)
Distributions in excess of cumulative earnings			(25,407)	(21,373)
Balance at end of period	1,148,487		1,148,487
White Cliffs [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			40,753
Equity income, net			438
Contributions			0
Distributions			(147)
Distributions in excess of cumulative earnings			(1,773)
Balance at end of period	39,271		39,271
Rendezvous [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			22,075
Equity income, net			(1,304)
Contributions			0
Distributions			(326)
Distributions in excess of cumulative earnings			(1,063)
Balance at end of period	19,382		19,382
Mont Belvieu JV [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			96,728
Equity income, net			14,500
Contributions			0
Distributions			(14,605)
Distributions in excess of cumulative earnings			(3,288)
Balance at end of period	93,335		93,335
Texas Express Gathering [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			16,116
Equity income, net			3,111
Contributions			0
Distributions			(3,004)
Distributions in excess of cumulative earnings			0
Balance at end of period	16,223		16,223
Texas Express Pipeline [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			188,925
Equity income, net			21,552
Contributions			0
Distributions			(21,678)
Distributions in excess of cumulative earnings			(1,457)
Balance at end of period	187,342		187,342
Front Range Pipeline [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			196,632
Equity income, net			21,318
Contributions			0
Distributions			(21,584)
Distributions in excess of cumulative earnings			(2,195)
Balance at end of period	194,171		194,171
Whitethorn LLC [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			149,690
Equity income, net			63
Contributions			255
Distributions			2,950
Distributions in excess of cumulative earnings			(1,565)
Balance at end of period	151,393		151,393
Cactus II [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			171,294
Equity income, net			7,265
Contributions			0
Distributions			(7,349)
Distributions in excess of cumulative earnings			(6,563)
Balance at end of period	164,647		164,647
Saddlehorn [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			110,441
Equity income, net			11,169
Contributions			0
Distributions			(10,934)
Distributions in excess of cumulative earnings			(815)
Balance at end of period	109,861		109,861
Panola [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			20,044
Equity income, net			1,052
Contributions			0
Distributions			(1,052)
Distributions in excess of cumulative earnings			(864)
Balance at end of period	19,180		19,180
Mi Vida [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			51,763
Equity income, net			7,156
Contributions			0
Distributions			(7,209)
Distributions in excess of cumulative earnings			(3,104)
Balance at end of period	48,606		48,606
Ranch Westex [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			979
Equity income, net			4,688
Contributions			0
Distributions			(4,688)
Distributions in excess of cumulative earnings			(2,083)
Balance at end of period	(1,104)	$ 2,900	(1,104)	$ 2,900
Red Bluff Express [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			101,747
Equity income, net			7,063
Contributions			4,785
Distributions			(6,778)
Distributions in excess of cumulative earnings			(637)
Balance at end of period	$ 106,180		$ 106,180

Equity Investments - Additional

Equity Investments - Additional Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2022	Dec. 31, 2021
Schedule of Equity Method Investments [Line Items]
Equity-investment balance		$ 1,148,487	$ 1,167,187
Ranch Westex [Member]
Schedule of Equity Method Investments [Line Items]
Equity investment impairment loss	$ 11,600
Equity-investment balance	$ 2,900	$ (1,104)	$ 979

Property, Plant, and Equipmen_2

Property, Plant, and Equipment - Historical Cost Table (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	$ 13,058,689	$ 12,846,078
Less accumulated depreciation	4,581,122	4,333,171
Net property, plant, and equipment	8,477,567	8,512,907
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	10,955	10,955
Gathering Systems – Pipelines [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	$ 5,452,285	5,386,003
Estimated useful life	30 years
Gathering Systems – Compressors [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	$ 2,241,600	2,172,953
Estimated useful life	15 years
Processing Complexes And Treating Facilities [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	$ 3,386,213	3,375,317
Estimated useful life	25 years
Transportation Pipeline And Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	$ 169,365	169,356
Transportation Pipeline And Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	6 years
Transportation Pipeline And Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	45 years
Produced-Water Disposal Systems [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	$ 890,723	882,527
Estimated useful life	20 years
Assets Under Construction [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	$ 137,600	98,473
Other [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	$ 769,948	$ 750,494
Other [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	3 years
Other [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	40 years

Property, Plant, and Equipmen_3

Property, Plant, and Equipment - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Property, Plant and Equipment [Line Items]
Long-lived asset and other impairments	$ 90	$ 12,738	$ 90	$ 27,604
Ranch Westex [Member]
Property, Plant and Equipment [Line Items]
Equity investment impairment loss				11,600
DJ Basin Complex [Member]
Property, Plant and Equipment [Line Items]
Long-lived asset and other impairments				$ 14,000

Selected Components of Workin_3

Selected Components of Working Capital - Accounts Receivable, Net Table (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Trade receivables, net	$ 710,315	$ 431,649
Other receivables, net	6,028	4,864
Total accounts receivable, net	716,343	436,513
WES Operating [Member]
Trade receivables, net	710,315	431,649
Other receivables, net	6,028	4,864
Total accounts receivable, net	$ 716,343	$ 436,513

Selected Components of Workin_4

Selected Components of Working Capital - Other Current Assets Table (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
NGLs inventory	$ 1,514	$ 3,370
Imbalance receivables	25,894	25,309
Prepaid insurance	1,550	10,369
Contract assets	16,512	5,307
Other	4,196	1,897
Total other current assets	49,666	46,252
WES Operating [Member]
NGLs inventory	1,514	3,370
Imbalance receivables	25,894	25,309
Prepaid insurance	276	8,538
Contract assets	16,512	5,307
Other	4,080	1,897
Total other current assets	$ 48,276	$ 44,421

Selected Components of Workin_5

Selected Components of Working Capital - Accrued Liabilities Table (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Accrued interest expense	$ 112,028	$ 131,177
Short-term asset retirement obligations	9,541	9,934
Short-term remediation and reclamation obligations	7,147	7,454
Income taxes payable	2,892	1,516
Contract liabilities	9,142	27,763
Accrued payroll and benefits	34,072	41,311
Other	42,995	44,094
Total accrued liabilities	217,817	263,249
WES Operating [Member]
Accrued interest expense	112,028	131,177
Short-term asset retirement obligations	9,541	9,934
Short-term remediation and reclamation obligations	7,147	7,454
Income taxes payable	2,892	1,516
Contract liabilities	9,142	27,763
Accrued payroll and benefits	0	20
Other	38,493	32,829
Total accrued liabilities	$ 179,243	$ 210,693

Debt and Interest Expense - Deb

Debt and Interest Expense - Debt Outstanding Table (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Total short-term debt, principal	$ 2,613	$ 506,040
Total short-term debt, carrying value	2,613	505,932
Total long-term debt, carrying value	6,656,123	6,400,616
Valuation, Market Approach [Member] | Level-2 Inputs [Member]
Debt Instrument [Line Items]
Short-term debt, fair value	2,613	508,947
Long-Term Debt Obligations [Member]
Debt Instrument [Line Items]
Total long-term debt, principal	6,722,789	6,470,182
Total long-term debt, carrying value	6,656,123	6,400,616
Long-Term Debt Obligations [Member] | Valuation, Market Approach [Member] | Level-2 Inputs [Member]
Debt Instrument [Line Items]
Long-term debt, fair value	5,908,055	7,284,665
WES Operating [Member]
Debt Instrument [Line Items]
Total short-term debt, carrying value	2,613	505,932
Total long-term debt, carrying value	6,656,123	6,400,616
WES Operating [Member] | Finance Lease Liability, Short Term [Member]
Debt Instrument [Line Items]
Finance leases - short-term debt	2,613	3,794
WES Operating [Member] | Finance Lease Liability, Short Term [Member] | Valuation, Market Approach [Member] | Level-2 Inputs [Member]
Debt Instrument [Line Items]
Finance leases - short-term debt	2,613	3,794
WES Operating [Member] | RCF [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Principal	255,000	0
Long-term debt, carrying value	255,000	0
WES Operating [Member] | RCF [Member] | Valuation, Market Approach [Member] | Level-2 Inputs [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term debt, fair value	255,000	0
WES Operating [Member] | Finance Lease Liability, Long Term [Member]
Debt Instrument [Line Items]
Finance leases - long-term debt	540	1,533
WES Operating [Member] | Finance Lease Liability, Long Term [Member] | Valuation, Market Approach [Member] | Level-2 Inputs [Member]
Debt Instrument [Line Items]
Finance leases - long-term debt	$ 540	1,533
WES Operating [Member] | Senior Notes [Member] | 4.000% Senior Notes due 2022 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	4%
Principal	$ 0	502,246
Short-term debt, carrying value	0	502,138
WES Operating [Member] | Senior Notes [Member] | 4.000% Senior Notes due 2022 [Member] | Valuation, Market Approach [Member] | Level-2 Inputs [Member]
Debt Instrument [Line Items]
Short-term debt, fair value	0	505,153
WES Operating [Member] | Senior Notes [Member] | Floating-Rate Senior Notes due 2023 [Member]
Debt Instrument [Line Items]
Principal	213,138	213,138
Long-term debt, carrying value	212,879	212,642
WES Operating [Member] | Senior Notes [Member] | Floating-Rate Senior Notes due 2023 [Member] | Valuation, Market Approach [Member] | Level-2 Inputs [Member]
Debt Instrument [Line Items]
Long-term debt, fair value	$ 212,387	213,072
WES Operating [Member] | Senior Notes [Member] | 3.100% Senior Notes due 2025 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	3.10%
Principal	$ 730,706	732,106
Long-term debt, carrying value	727,322	728,096
WES Operating [Member] | Senior Notes [Member] | 3.100% Senior Notes due 2025 [Member] | Valuation, Market Approach [Member] | Level-2 Inputs [Member]
Debt Instrument [Line Items]
Long-term debt, fair value	$ 679,964	764,815
WES Operating [Member] | Senior Notes [Member] | 3.950% Senior Notes due 2025 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	3.95%
Principal	$ 399,163	399,163
Long-term debt, carrying value	396,372	395,928
WES Operating [Member] | Senior Notes [Member] | 3.950% Senior Notes due 2025 [Member] | Valuation, Market Approach [Member] | Level-2 Inputs [Member]
Debt Instrument [Line Items]
Long-term debt, fair value	$ 377,181	418,506
WES Operating [Member] | Senior Notes [Member] | 4.650% Senior Notes due 2026 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	4.65%
Principal	$ 474,242	474,242
Long-term debt, carrying value	471,892	471,629
WES Operating [Member] | Senior Notes [Member] | 4.650% Senior Notes due 2026 [Member] | Valuation, Market Approach [Member] | Level-2 Inputs [Member]
Debt Instrument [Line Items]
Long-term debt, fair value	$ 446,852	516,473
WES Operating [Member] | Senior Notes [Member] | 4.500% Senior Notes due 2028 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	4.50%
Principal	$ 400,000	400,000
Long-term debt, carrying value	396,418	396,145
WES Operating [Member] | Senior Notes [Member] | 4.500% Senior Notes due 2028 [Member] | Valuation, Market Approach [Member] | Level-2 Inputs [Member]
Debt Instrument [Line Items]
Long-term debt, fair value	$ 362,556	437,673
WES Operating [Member] | Senior Notes [Member] | 4.750% Senior Notes due 2028 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	4.75%
Principal	$ 400,000	400,000
Long-term debt, carrying value	397,137	396,938
WES Operating [Member] | Senior Notes [Member] | 4.750% Senior Notes due 2028 [Member] | Valuation, Market Approach [Member] | Level-2 Inputs [Member]
Debt Instrument [Line Items]
Long-term debt, fair value	$ 366,112	444,550
WES Operating [Member] | Senior Notes [Member] | 4.050% Senior Notes due 2030 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	4.05%
Principal	$ 1,200,000	1,200,000
Long-term debt, carrying value	1,190,835	1,190,339
WES Operating [Member] | Senior Notes [Member] | 4.050% Senior Notes due 2030 [Member] | Valuation, Market Approach [Member] | Level-2 Inputs [Member]
Debt Instrument [Line Items]
Long-term debt, fair value	$ 1,043,296	1,323,595
WES Operating [Member] | Senior Notes [Member] | 5.450% Senior Notes due 2044 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	5.45%
Principal	$ 600,000	600,000
Long-term debt, carrying value	593,806	593,733
WES Operating [Member] | Senior Notes [Member] | 5.450% Senior Notes due 2044 [Member] | Valuation, Market Approach [Member] | Level-2 Inputs [Member]
Debt Instrument [Line Items]
Long-term debt, fair value	$ 499,525	717,804
WES Operating [Member] | Senior Notes [Member] | 5.300% Senior Notes due 2048 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	5.30%
Principal	$ 700,000	700,000
Long-term debt, carrying value	687,378	687,265
WES Operating [Member] | Senior Notes [Member] | 5.300% Senior Notes due 2048 [Member] | Valuation, Market Approach [Member] | Level-2 Inputs [Member]
Debt Instrument [Line Items]
Long-term debt, fair value	$ 566,236	844,223
WES Operating [Member] | Senior Notes [Member] | 5.500% Senior Notes due 2048 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	5.50%
Principal	$ 350,000	350,000
Long-term debt, carrying value	342,720	342,659
WES Operating [Member] | Senior Notes [Member] | 5.500% Senior Notes due 2048 [Member] | Valuation, Market Approach [Member] | Level-2 Inputs [Member]
Debt Instrument [Line Items]
Long-term debt, fair value	$ 288,601	418,907
WES Operating [Member] | Senior Notes [Member] | 5.250% Senior Notes due 2050 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	5.25%
Principal	$ 1,000,000	1,000,000
Long-term debt, carrying value	983,824	983,709
WES Operating [Member] | Senior Notes [Member] | 5.250% Senior Notes due 2050 [Member] | Valuation, Market Approach [Member] | Level-2 Inputs [Member]
Debt Instrument [Line Items]
Long-term debt, fair value	$ 809,805	$ 1,183,514

Debt and Interest Expense - D_2

Debt and Interest Expense - Debt Activity Table (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2022 USD ($)
Changes in Debt Outstanding [Roll Forward]
Beginning balance	$ 6,906,548
Ending balance	6,658,736
WES Operating [Member]
Changes in Debt Outstanding [Roll Forward]
Other	3,006
WES Operating [Member] | RCF [Member] | Revolving Credit Facility [Member]
Changes in Debt Outstanding [Roll Forward]
RCF borrowings	635,000
Repayments of RCF borrowings	(380,000)
WES Operating [Member] | 4.000% Senior Notes due 2022 [Member] | Senior Notes [Member]
Changes in Debt Outstanding [Roll Forward]
Repayments of senior notes	$ (502,246)
Senior note, interest rate	4%
WES Operating [Member] | 3.100% Senior Notes due 2025 [Member] | Senior Notes [Member]
Changes in Debt Outstanding [Roll Forward]
Repayments of senior notes	$ (1,400)
Senior note, interest rate	3.10%
WES Operating [Member] | Finance Lease Liability [Member]
Changes in Debt Outstanding [Roll Forward]
Finance lease liabilities	$ (2,172)

Debt and Interest Expense - Int

Debt and Interest Expense - Interest Expense Table (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Debt Instruments [Abstract]
Long-term and short-term debt	$ (78,577)	$ (92,487)	$ (162,005)	$ (188,209)
Finance lease liabilities	(31)	(292)	(73)	(590)
Commitment fees and amortization of debt-related costs	(3,068)	(3,179)	(6,100)	(6,517)
Capitalized interest	904	668	1,951	1,533
Interest expense	$ (80,772)	$ (95,290)	$ (166,227)	$ (193,783)

Debt and Interest Expense - Add

Debt and Interest Expense - Additional Information (Details) - WES Operating [Member] - USD ($)	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Mar. 31, 2021
3.100% Senior Notes due 2025 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Senior note, interest rate	3.10%
Senior note, effective interest rate	3.79%	4.542%
Repayments of senior notes	$ 1,400,000
4.050% Senior Notes due 2030 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Senior note, interest rate	4.05%
Senior note, effective interest rate	4.671%	5.424%
5.250% Senior Notes due 2050 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Senior note, interest rate	5.25%
Senior note, effective interest rate	5.869%	6.629%
Floating-Rate Senior Notes due 2023 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Senior note, effective interest rate	2.12%	2.29%
4.000% Senior Notes due 2022 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Senior note, interest rate	4%
Repayments of senior notes	$ 502,246,000
5.375% Senior Notes due 2021 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Senior note, interest rate			5.375%
RCF [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Facility, maximum borrowing capacity	2,000,000,000
Facility, expandable maximum borrowing capacity	2,500,000,000
Facility, outstanding borrowings	255,000,000
Facility, outstanding letters of credit	5,200,000
Facility, available borrowing capacity	$ 1,700,000,000
Facility, interest rate at period end	3.12%	1.60%
Facility, fee rate	0.25%	0.25%
RCF [Member] | Revolving Credit Facility [Member] | Extending Lenders [Member]
Debt Instrument [Line Items]
Facility, borrowing capacity for extending and non-extending lender	$ 1,600,000,000
RCF [Member] | Revolving Credit Facility [Member] | Non-Extending Lenders [Member]
Debt Instrument [Line Items]
Facility, borrowing capacity for extending and non-extending lender	$ 400,000,000

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Liability for remediation and reclamation obligations	$ 9	$ 10.1