Western Midstream Partners (WES) 10-Q 3 May 23 2023 Q1 Quarterly report Financial data

Cover Page

Cover Page - shares	3 Months Ended
	Mar. 31, 2023	Apr. 27, 2023
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2023
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		384,615,443
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	2023
Document Fiscal Period Focus	Q1
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	Mar. 31, 2023
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	2023
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Revenues and other
Revenues and other	[1]	$ 733,982	$ 758,297
Equity income, net – related parties		39,021	49,607
Operating expenses
Cost of product		51,459	72,848
Operation and maintenance		174,239	128,976
General and administrative		51,117	48,602
Property and other taxes		6,831	18,442
Depreciation and amortization		144,626	134,582
Long-lived asset and other impairments	[2]	52,401	0
Total operating expenses	[3]	480,673	403,450
Gain (loss) on divestiture and other, net		(2,118)	370
Operating income (loss)		290,212	404,824
Interest expense		(81,670)	(85,455)
Other income (expense), net		1,215	106
Income (loss) before income taxes		209,757	319,475
Income tax expense (benefit)		1,416	1,805
Net income (loss)		208,341	317,670
Net income (loss) attributable to noncontrolling interests		4,696	8,953
Net income (loss) attributable to Western Midstream Partners, LP		203,645	308,717
Limited partners' interest in net income (loss):
Net income (loss) attributable to Western Midstream Partners, LP		203,645	308,717
General partner interest in net (income) loss		(4,686)	(6,783)
Limited partners' interest in net income (loss)	[4]	$ 198,959	$ 301,934
Net income (loss) per common unit - basic	[4]	$ 0.52	$ 0.75
Net income (loss) per common unit - diluted	[4]	$ 0.52	$ 0.75
Weighted-average common units outstanding - basic	[4]	384,468	403,254
Weighted-average common units outstanding - diluted	[4]	385,750	404,460
Service Revenues - Fee Based [Member]
Revenues and other
Revenues and other		$ 647,867	$ 631,598
Service Revenues - Product Based [Member]
Revenues and other
Revenues and other		46,810	40,867
Product Sales [Member]
Revenues and other
Revenues and other		39,025	85,589
Other [Member]
Revenues and other
Revenues and other		$ 280	$ 243
[1] Total revenues and other includes related-party amounts of $448.8 million and $428.7 million for the three months ended March 31, 2023 and 2022, respectively. See Note 5 . See Note 7 . Total operating expenses includes related-party amounts of $(3.1) million and $(17.6) million for the three months ended March 31, 2023 and 2022, respectively. See Note 5 . See Note 4.

Consolidated Statements of Op_2

Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Total revenues and other	[1]	$ 733,982	$ 758,297
Total operating expenses	[2]	480,673	403,450
Related Parties [Member]
Total revenues and other		448,785	428,709
Total operating expenses		$ (3,133)	$ (17,627)
[1] Total revenues and other includes related-party amounts of $448.8 million and $428.7 million for the three months ended March 31, 2023 and 2022, respectively. See Note 5 . Total operating expenses includes related-party amounts of $(3.1) million and $(17.6) million for the three months ended March 31, 2023 and 2022, respectively. See Note 5 .

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands		Mar. 31, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents		$ 112,645	$ 286,656
Accounts receivable, net		558,300	554,263
Other current assets		64,353	59,506
Total current assets		735,298	900,425
Property, plant, and equipment
Cost		13,550,060	13,365,593
Less accumulated depreciation		5,008,838	4,823,993
Net property, plant, and equipment		8,541,222	8,541,600
Goodwill		4,783	4,783
Other intangible assets		705,158	713,075
Equity investments		931,852	944,696
Other assets	[1]	194,175	167,049
Total assets	[2]	11,112,488	11,271,628
Current liabilities
Accounts and imbalance payables		362,398	360,562
Short-term debt		2,714	215,780
Accrued ad valorem taxes		52,717	72,875
Accrued liabilities		163,498	254,640
Total current liabilities		581,327	903,857
Long-term liabilities
Long-term debt		6,693,941	6,569,582
Deferred income taxes		15,348	14,424
Asset retirement obligations		293,718	290,021
Other liabilities		426,590	385,629
Total long-term liabilities		7,429,597	7,259,656
Total liabilities	[3]	8,010,924	8,163,513
Equity and partners' capital
Common units (384,615,227 and 384,070,984 units issued and outstanding at March 31, 2023, and December 31, 2022, respectively)		2,964,712	2,969,604
General partner units (9,060,641 units issued and outstanding at March 31, 2023, and December 31, 2022)		2,261	2,105
Total partners' capital		2,966,973	2,971,709
Noncontrolling interests		134,591	136,406
Total equity and partners' capital		3,101,564	3,108,115
Total liabilities, equity, and partners' capital		$ 11,112,488	$ 11,271,628
Common units issued		384,615,227	384,070,984
Common units outstanding		384,615,227	384,070,984
General partner units issued		9,060,641	9,060,641
General partner units outstanding		9,060,641	9,060,641
[1] Other assets includes $6.3 million and $6.5 million of NGLs line - fill inventory as of March 31, 2023, and December 31, 2022, respectively. Other assets also includes $77.4 million and $60.4 million of materials and supplies inventory as of March 31, 2023, and December 31, 2022, respectively. Total assets includes related - party amounts of $1.3 billion as of March 31, 2023, and December 31, 2022, which includes related - party Accounts receivable, net of $307.6 million and $313.9 million as of March 31, 2023, and December 31, 2022, respectively. See Note 5 . Total liabilities includes related - party amounts of $318.7 million and $312.3 million as of March 31, 2023, and December 31, 2022, respectively. See Note 5 .

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands		Mar. 31, 2023	Dec. 31, 2022
Materials and supplies inventory		$ 77,400	$ 60,400
Total assets	[1]	11,112,488	11,271,628
Accounts receivable, net		558,300	554,263
Total liabilities	[2]	8,010,924	8,163,513
Related Parties [Member]
Total assets		1,279,755	1,289,269
Accounts receivable, net		307,570	313,937
Total liabilities		318,676	312,305
Natural-Gas Liquids [Member]
NGLs line-fill inventory		$ 6,300	$ 6,500
[1] Total assets includes related - party amounts of $1.3 billion as of March 31, 2023, and December 31, 2022, which includes related - party Accounts receivable, net of $307.6 million and $313.9 million as of March 31, 2023, and December 31, 2022, respectively. See Note 5 . Total liabilities includes related - party amounts of $318.7 million and $312.3 million as of March 31, 2023, and December 31, 2022, respectively. See Note 5 .

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, 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, 2022		3,108,115				2,969,604		2,105	136,406
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)		208,341				198,959		4,686	4,696
Distributions to noncontrolling interest owners				$ (2,240)	$ (4,271)					$ (2,240)	$ (4,271)
Distributions to Partnership unitholders		(196,569)				(192,039)		(4,530)
Unit repurchases	[1]	(7,061)				(7,061)
Equity-based compensation expense		7,199				7,199
Other		(11,950)				(11,950)
Balance at Mar. 31, 2023		$ 3,101,564				$ 2,964,712		$ 2,261	$ 134,591
[1] See Note 4 .

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities
Net income (loss)		$ 208,341	$ 317,670
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization		144,626	134,582
Long-lived asset and other impairments	[1]	52,401	0
Non-cash equity-based compensation expense		7,199	7,743
Deferred income taxes		924	1,132
Accretion and amortization of long-term obligations, net		1,692	1,782
Equity income, net – related parties		(39,021)	(49,607)
Distributions from equity-investment earnings – related parties		39,609	45,870
(Gain) loss on divestiture and other, net		2,118	(370)
Other		200	0
Changes in assets and liabilities:
(Increase) decrease in accounts receivable, net		(4,037)	(165,134)
Increase (decrease) in accounts and imbalance payables and accrued liabilities, net		(136,460)	(14,292)
Change in other items, net		24,832	(2,918)
Net cash provided by operating activities		302,424	276,458
Cash flows from investing activities
Capital expenditures		(173,088)	(83,971)
Contributions to equity investments – related parties		(110)	(2,070)
Distributions from equity investments in excess of cumulative earnings – related parties		12,366	9,925
(Increase) decrease in materials and supplies inventory and other		(18,346)	4,116
Net cash used in investing activities		(179,178)	(71,617)
Cash flows from financing activities
Borrowings, net of debt issuance costs		220,000	0
Repayments of debt		(313,138)	0
Increase (decrease) in outstanding checks		18,768	(7,088)
Distributions to Partnership unitholders	[2]	(196,569)	(134,749)
Net contributions from (distributions to) related parties		0	409
Unit repurchases		(7,061)	(5,149)
Other		(12,746)	(7,225)
Net cash provided by (used in) financing activities		(297,257)	(158,591)
Net increase (decrease) in cash and cash equivalents		(174,011)	46,250
Cash and cash equivalents at beginning of period		286,656	201,999
Cash and cash equivalents at end of period		112,645	248,249
Supplemental disclosures
Interest paid, net of capitalized interest		133,245	149,289
Income taxes paid (reimbursements received)		1,270	905
Accrued capital expenditures		91,067	36,821
Third Parties [Member]
Cash flows from investing activities
Proceeds from the sale of assets to third parties		0	383
Chipeta [Member]
Cash flows from financing activities
Distributions to Chipeta noncontrolling interest owner		(2,240)	(1,984)
WES Operating [Member]
Cash flows from financing activities
Distributions to noncontrolling interest owner of WES Operating		$ (4,271)	$ (2,805)
[1] See Note 7 . Includes related-party amounts. See Note 5 .

Consolidated Statements of Op_3

Consolidated Statements of Operations - WES Operating - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Revenues and other
Revenues and other	[1]	$ 733,982	$ 758,297
Equity income, net – related parties		39,021	49,607
Operating expenses
Cost of product		51,459	72,848
Operation and maintenance		174,239	128,976
General and administrative		51,117	48,602
Property and other taxes		6,831	18,442
Depreciation and amortization		144,626	134,582
Long-lived asset and other impairments	[2]	52,401	0
Total operating expenses	[3]	480,673	403,450
Gain (loss) on divestiture and other, net		(2,118)	370
Operating income (loss)		290,212	404,824
Interest expense		(81,670)	(85,455)
Other income (expense), net		1,215	106
Income (loss) before income taxes		209,757	319,475
Income tax expense (benefit)		1,416	1,805
Net income (loss)		208,341	317,670
Net income (loss) attributable to noncontrolling interest		4,696	8,953
Net income (loss) attributable to Western Midstream Operating, LP		203,645	308,717
Service Revenues - Fee Based [Member]
Revenues and other
Revenues and other		647,867	631,598
Service Revenues - Product Based [Member]
Revenues and other
Revenues and other		46,810	40,867
Product Sales [Member]
Revenues and other
Revenues and other		39,025	85,589
Other [Member]
Revenues and other
Revenues and other		280	243
WES Operating [Member]
Revenues and other
Revenues and other	[4]	733,982	758,297
Equity income, net – related parties		39,021	49,607
Operating expenses
Cost of product		51,459	72,848
Operation and maintenance		174,239	128,976
General and administrative		50,885	47,861
Property and other taxes		6,831	18,442
Depreciation and amortization		144,626	134,582
Long-lived asset and other impairments	[5]	52,401	0
Total operating expenses	[6]	480,441	402,709
Gain (loss) on divestiture and other, net		(2,118)	370
Operating income (loss)		290,444	405,565
Interest expense		(81,670)	(85,455)
Other income (expense), net		1,190	103
Income (loss) before income taxes		209,964	320,213
Income tax expense (benefit)		1,416	1,805
Net income (loss)		208,548	318,408
Net income (loss) attributable to noncontrolling interest		535	2,636
Net income (loss) attributable to Western Midstream Operating, LP		208,013	315,772
WES Operating [Member] | Service Revenues - Fee Based [Member]
Revenues and other
Revenues and other		647,867	631,598
WES Operating [Member] | Service Revenues - Product Based [Member]
Revenues and other
Revenues and other		46,810	40,867
WES Operating [Member] | Product Sales [Member]
Revenues and other
Revenues and other		39,025	85,589
WES Operating [Member] | Other [Member]
Revenues and other
Revenues and other		$ 280	$ 243
[1] Total revenues and other includes related-party amounts of $448.8 million and $428.7 million for the three months ended March 31, 2023 and 2022, respectively. See Note 5 . See Note 7 . Total operating expenses includes related-party amounts of $(3.1) million and $(17.6) million for the three months ended March 31, 2023 and 2022, respectively. See Note 5 . Total revenues and other includes related-party amounts of $448.8 million and $428.7 million for the three months ended March 31, 2023 and 2022, respectively. See Note 5 . See Note 7 . Total operating expenses includes related-party amounts of $(1.9) million and $(16.7) million for the three months ended March 31, 2023 and 2022, respectively. See Note 5 .

Consolidated Statements of Op_4

Consolidated Statements of Operations - WES Operating (Parenthetical) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Total revenues and other	[1]	$ 733,982	$ 758,297
Total operating expenses	[2]	480,673	403,450
Related Parties [Member]
Total revenues and other		448,785	428,709
Total operating expenses		(3,133)	(17,627)
WES Operating [Member]
Total revenues and other	[3]	733,982	758,297
Total operating expenses	[4]	480,441	402,709
WES Operating [Member] | Related Parties [Member]
Total revenues and other		448,800	428,700
Total operating expenses		$ (1,900)	$ (16,700)
[1] Total revenues and other includes related-party amounts of $448.8 million and $428.7 million for the three months ended March 31, 2023 and 2022, respectively. See Note 5 . Total operating expenses includes related-party amounts of $(3.1) million and $(17.6) million for the three months ended March 31, 2023 and 2022, respectively. See Note 5 . Total revenues and other includes related-party amounts of $448.8 million and $428.7 million for the three months ended March 31, 2023 and 2022, respectively. See Note 5 . Total operating expenses includes related-party amounts of $(1.9) million and $(16.7) million for the three months ended March 31, 2023 and 2022, respectively. See Note 5 .

Consolidated Balance Sheets - W

Consolidated Balance Sheets - WES Operating - USD ($) $ in Thousands		Mar. 31, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents		$ 112,645	$ 286,656
Accounts receivable, net		558,300	554,263
Other current assets		64,353	59,506
Total current assets		735,298	900,425
Property, plant, and equipment
Cost		13,550,060	13,365,593
Less accumulated depreciation		5,008,838	4,823,993
Net property, plant, and equipment		8,541,222	8,541,600
Goodwill		4,783	4,783
Other intangible assets		705,158	713,075
Equity investments		931,852	944,696
Other assets	[1]	194,175	167,049
Total assets	[2]	11,112,488	11,271,628
Current liabilities
Accounts and imbalance payables		362,398	360,562
Short-term debt		2,714	215,780
Accrued ad valorem taxes		52,717	72,875
Accrued liabilities		163,498	254,640
Total current liabilities		581,327	903,857
Long-term liabilities
Long-term debt		6,693,941	6,569,582
Deferred income taxes		15,348	14,424
Asset retirement obligations		293,718	290,021
Other liabilities		426,590	385,629
Total long-term liabilities		7,429,597	7,259,656
Total liabilities	[3]	8,010,924	8,163,513
Equity and partners' capital
Common units (318,675,578 units issued and outstanding at March 31, 2023, and December 31, 2022)		2,964,712	2,969,604
Total partners' capital		2,966,973	2,971,709
Noncontrolling interest		134,591	136,406
Total equity and partners' capital		3,101,564	3,108,115
Total liabilities, equity, and partners' capital		$ 11,112,488	$ 11,271,628
Common units issued		384,615,227	384,070,984
Common units outstanding		384,615,227	384,070,984
WES Operating [Member]
Current assets
Cash and cash equivalents		$ 106,930	$ 286,101
Accounts receivable, net		559,311	554,263
Other current assets		62,277	57,291
Total current assets		728,518	897,655
Property, plant, and equipment
Cost		13,550,060	13,365,593
Less accumulated depreciation		5,008,838	4,823,993
Net property, plant, and equipment		8,541,222	8,541,600
Goodwill		4,783	4,783
Other intangible assets		705,158	713,075
Equity investments		931,852	944,696
Other assets	[4]	192,459	166,450
Total assets	[5]	11,103,992	11,268,259
Current liabilities
Accounts and imbalance payables		362,347	404,468
Short-term debt		2,714	215,780
Accrued ad valorem taxes		52,717	72,875
Accrued liabilities		138,373	197,289
Total current liabilities		556,151	890,412
Long-term liabilities
Long-term debt		6,693,941	6,569,582
Deferred income taxes		15,348	14,424
Asset retirement obligations		293,718	290,021
Other liabilities		424,874	383,713
Total long-term liabilities		7,427,881	7,257,740
Total liabilities	[6]	7,984,032	8,148,152
Equity and partners' capital
Common units (318,675,578 units issued and outstanding at March 31, 2023, and December 31, 2022)		3,093,570	3,092,012
Total partners' capital		3,093,570	3,092,012
Noncontrolling interest		26,390	28,095
Total equity and partners' capital		3,119,960	3,120,107
Total liabilities, equity, and partners' capital		$ 11,103,992	$ 11,268,259
Common units issued		318,675,578	318,675,578
Common units outstanding		318,675,578	318,675,578
[1] Other assets includes $6.3 million and $6.5 million of NGLs line - fill inventory as of March 31, 2023, and December 31, 2022, respectively. Other assets also includes $77.4 million and $60.4 million of materials and supplies inventory as of March 31, 2023, and December 31, 2022, respectively. Total assets includes related - party amounts of $1.3 billion as of March 31, 2023, and December 31, 2022, which includes related - party Accounts receivable, net of $307.6 million and $313.9 million as of March 31, 2023, and December 31, 2022, respectively. See Note 5 . Total liabilities includes related - party amounts of $318.7 million and $312.3 million as of March 31, 2023, and December 31, 2022, respectively. See Note 5 . Other assets includes $6.3 million and $6.5 million of NGLs line - fill inventory as of March 31, 2023, and December 31, 2022, respectively. Other assets also includes $77.4 million and $60.4 million of materials and supplies inventory as of March 31, 2023, and December 31, 2022, respectively. Total assets includes related - party amounts of $1.3 billion as of March 31, 2023, and December 31, 2022, which includes related - party Accounts receivable, net of $308.6 million and $313.9 million as of March 31, 2023, and December 31, 2022, respectively. See Note 5 . Total liabilities includes related - party amounts of $318.4 million and $356.0 million as of March 31, 2023, and December 31, 2022, respectively. See Note 5 .

Consolidated Balance Sheets -_2

Consolidated Balance Sheets - WES Operating (Parenthetical) - USD ($) $ in Thousands		Mar. 31, 2023	Dec. 31, 2022
Materials and supplies inventory		$ 77,400	$ 60,400
Total assets	[1]	11,112,488	11,271,628
Accounts receivable, net		558,300	554,263
Total liabilities	[2]	8,010,924	8,163,513
Related Parties [Member]
Total assets		1,279,755	1,289,269
Accounts receivable, net		307,570	313,937
Total liabilities		318,676	312,305
Natural-Gas Liquids [Member]
NGLs line-fill inventory		6,300	6,500
WES Operating [Member]
Materials and supplies inventory		77,400	60,400
Total assets	[3]	11,103,992	11,268,259
Accounts receivable, net		559,311	554,263
Total liabilities	[4]	7,984,032	8,148,152
WES Operating [Member] | Related Parties [Member]
Total assets		1,300,000	1,300,000
Accounts receivable, net		308,581	313,937
Total liabilities		318,400	356,000
WES Operating [Member] | Natural-Gas Liquids [Member]
NGLs line-fill inventory		$ 6,300	$ 6,500
[1] Total assets includes related - party amounts of $1.3 billion as of March 31, 2023, and December 31, 2022, which includes related - party Accounts receivable, net of $307.6 million and $313.9 million as of March 31, 2023, and December 31, 2022, respectively. See Note 5 . Total liabilities includes related - party amounts of $318.7 million and $312.3 million as of March 31, 2023, and December 31, 2022, respectively. See Note 5 . Total assets includes related - party amounts of $1.3 billion as of March 31, 2023, and December 31, 2022, which includes related - party Accounts receivable, net of $308.6 million and $313.9 million as of March 31, 2023, and December 31, 2022, respectively. See Note 5 . Total liabilities includes related - party amounts of $318.4 million and $356.0 million as of March 31, 2023, and December 31, 2022, respectively. See Note 5 .

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, 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, 2022	3,108,115			2,969,604		136,406		3,120,107				3,092,012			28,095
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)	208,341			198,959		4,696		208,548				208,013			535
Distributions to noncontrolling interest owners			$ (2,240)				$ (2,240)				$ (2,240)					$ (2,240)
Distributions to WES Operating unitholders	(196,569)			(192,039)				(213,513)				(213,513)
Contributions of equity-based compensation from related parties										$ 7,058				$ 7,058
Balance at Mar. 31, 2023	$ 3,101,564			$ 2,964,712		$ 134,591		$ 3,119,960				$ 3,093,570			$ 26,390

Consolidated Statements of Ca_2

Consolidated Statements of Cash Flows - WES Operating - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities
Net income (loss)		$ 208,341	$ 317,670
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization		144,626	134,582
Long-lived asset and other impairments	[1]	52,401	0
Non-cash equity-based compensation expense		7,199	7,743
Deferred income taxes		924	1,132
Accretion and amortization of long-term obligations, net		1,692	1,782
Equity income, net – related parties		(39,021)	(49,607)
Distributions from equity-investment earnings – related parties		39,609	45,870
(Gain) loss on divestiture and other, net		2,118	(370)
Other		200	0
Changes in assets and liabilities:
(Increase) decrease in accounts receivable, net		(4,037)	(165,134)
Increase (decrease) in accounts and imbalance payables and accrued liabilities, net		(136,460)	(14,292)
Change in other items, net		24,832	(2,918)
Net cash provided by operating activities		302,424	276,458
Cash flows from investing activities
Capital expenditures		(173,088)	(83,971)
Contributions to equity investments – related parties		(110)	(2,070)
Distributions from equity investments in excess of cumulative earnings – related parties		12,366	9,925
(Increase) decrease in materials and supplies inventory and other		(18,346)	4,116
Net cash used in investing activities		(179,178)	(71,617)
Cash flows from financing activities
Borrowings, net of debt issuance costs		220,000	0
Repayments of debt		(313,138)	0
Increase (decrease) in outstanding checks		18,768	(7,088)
Distributions to WES Operating unitholders	[2]	(196,569)	(134,749)
Net contributions from (distributions to) related parties		0	409
Other		(12,746)	(7,225)
Net cash provided by (used in) financing activities		(297,257)	(158,591)
Net increase (decrease) in cash and cash equivalents		(174,011)	46,250
Cash and cash equivalents at beginning of period		286,656	201,999
Cash and cash equivalents at end of period		112,645	248,249
Supplemental disclosures
Interest paid, net of capitalized interest		133,245	149,289
Income taxes paid (reimbursements received)		1,270	905
Accrued capital expenditures		91,067	36,821
Third Parties [Member]
Cash flows from investing activities
Proceeds from the sale of assets to third parties		0	383
Chipeta [Member]
Cash flows from financing activities
Distributions to Chipeta noncontrolling interest owner		(2,240)	(1,984)
WES Operating [Member]
Cash flows from operating activities
Net income (loss)		208,548	318,408
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization		144,626	134,582
Long-lived asset and other impairments	[3]	52,401	0
Non-cash equity-based compensation expense		7,058	7,612
Deferred income taxes		924	1,132
Accretion and amortization of long-term obligations, net		1,692	1,782
Equity income, net – related parties		(39,021)	(49,607)
Distributions from equity-investment earnings – related parties		39,609	45,870
(Gain) loss on divestiture and other, net		2,118	(370)
Other		200	0
Changes in assets and liabilities:
(Increase) decrease in accounts receivable, net		(5,048)	(165,134)
Increase (decrease) in accounts and imbalance payables and accrued liabilities, net		(148,148)	(21,864)
Change in other items, net		26,009	(2,294)
Net cash provided by operating activities		290,968	270,117
Cash flows from investing activities
Capital expenditures		(173,088)	(83,971)
Contributions to equity investments – related parties		(110)	(2,070)
Distributions from equity investments in excess of cumulative earnings – related parties		12,366	9,925
(Increase) decrease in materials and supplies inventory and other		(18,346)	4,116
Net cash used in investing activities		(179,178)	(71,617)
Cash flows from financing activities
Borrowings, net of debt issuance costs		220,000	0
Repayments of debt		(313,138)	0
Increase (decrease) in outstanding checks		18,726	(6,953)
Distributions to WES Operating unitholders	[4]	(213,513)	(140,217)
Net contributions from (distributions to) related parties		0	409
Other		(796)	(1,140)
Net cash provided by (used in) financing activities		(290,961)	(149,885)
Net increase (decrease) in cash and cash equivalents		(179,171)	48,615
Cash and cash equivalents at beginning of period		286,101	195,598
Cash and cash equivalents at end of period		106,930	244,213
Supplemental disclosures
Interest paid, net of capitalized interest		133,245	149,289
Income taxes paid (reimbursements received)		1,270	905
Accrued capital expenditures		91,067	36,821
WES Operating [Member] | Third Parties [Member]
Cash flows from investing activities
Proceeds from the sale of assets to third parties		0	383
WES Operating [Member] | Chipeta [Member]
Cash flows from financing activities
Distributions to Chipeta noncontrolling interest owner		$ (2,240)	$ (1,984)
[1] See Note 7 . Includes related-party amounts. See Note 5 . See Note 7 .

Description of Business and Bas

Description of Business and Basis of Presentation	3 Months Ended
	Mar. 31, 2023
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 5 ), the Partnership’s investments accounted for under the equity method of accounting (see Note 6 ), and the Partnership and WES Operating for transactions that eliminate upon consolidation (see Note 5 ). 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 March 31, 2023, 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 25 3 — 3 NGLs pipelines 2 — — 5 Natural - gas pipelines 6 — — 1 Crude - oil pipelines 3 1 — 3 _________________________________________________________________________________________ (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 (see Note 6) : 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 % 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 % 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 2022 Form 10-K, as filed with the SEC on February 22, 2023. Management believes that the disclosures made are adequate to make the information not misleading. 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. 1. DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION 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 March 31, 2023 (see Note 6 ). 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. 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% limited partner interest in WES Operating owned by an Occidental subsidiary. WES Operating’s noncontrolling interest in the consolidated financial statements consists of the 25% third - party interest in Chipeta. See Note 4. 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 three months ended March 31, 2023, the Partnership issued 829,931 common units under its long-term incentive plans. Compensation expense was $7.2 million and $5.8 million for the three months ended March 31, 2023 and 2022, respectively.

Revenue from Contracts with Cus

Revenue from Contracts with Customers	3 Months Ended
	Mar. 31, 2023
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 thousands 2023 2022 Revenue from customers Service revenues – fee based $ 647,867 $ 631,598 Service revenues – product based 46,810 40,867 Product sales 39,025 85,589 Total revenue from customers 733,702 758,054 Revenue from other than customers Other 280 243 Total revenues and other $ 733,982 $ 758,297 Contract balances. Receivables from customers, which are included in Accounts receivable, net on the consolidated balance sheets were $555.3 million and $545.0 million as of March 31, 2023, and December 31, 2022, 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, 2022 $ 22,561 Amounts transferred to Accounts receivable, net that were included in the contract assets balance at the beginning of the period (1,307) Additional estimated revenues recognized 5,231 Contract assets balance at March 31, 2023 $ 26,485 Contract assets at March 31, 2023 Other current assets $ 7,937 Other assets 18,548 Total contract assets from contracts with customers $ 26,485 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, 2022 $ 369,285 Cash received or receivable, excluding revenues recognized during the period 23,738 Revenues recognized that were included in the contract liability balance at the beginning of the period (10,179) Contract liabilities balance at March 31, 2023 $ 382,844 Contract liabilities at March 31, 2023 Accrued liabilities $ 14,307 Other liabilities 368,537 Total contract liabilities from contracts with customers $ 382,844 Transaction price allocated to remaining performance obligations. Revenues expected to be recognized from certain performance obligations that are unsatisfied (or partially unsatisfied) as of March 31, 2023, 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 2023 $ 826,454 2024 1,138,601 2025 1,078,564 2026 923,013 2027 832,803 Thereafter 1,915,544 Total $ 6,714,979

Partnership Distributions

Partnership Distributions	3 Months Ended
	Mar. 31, 2023
Distributions Made to Members or Limited Partners [Abstract]
Partnership Distributions	3. 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 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. 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 2022 March 31 $ 0.500 $ 206,197 May 13, 2022 May 2, 2022 June 30 0.500 197,744 August 12, 2022 August 1, 2022 September 30 0.500 197,065 November 14, 2022 October 31, 2022 December 31 0.500 196,569 February 13, 2023 February 1, 2023 2023 March 31 (1) $ 0.856 $ 336,987 May 15, 2023 May 1, 2023 _________________________________________________________________________________________ (1) Includes the regular quarterly distribution of $0.500 per unit, or $196.8 million, as well as the Enhanced Distribution of $0.356 per unit discussed below. To facilitate the distribution of available cash, during 2022 the Partnership adopted a financial policy that provided for an additional distribution (“Enhanced Distribution”) to be paid in conjunction with the regular first-quarter distribution of the following year (beginning in 2023), in a target amount equal to Free cash flow generated in the prior year after subtracting Free cash flow used for the prior year’s debt repayments, regular-quarter distributions, and unit repurchases. This Enhanced Distribution is subject to Board discretion, the establishment of cash reserves for the proper conduct of the Partnership’s business and is also contingent on the attainment of prior year-end net leverage thresholds (the ratio of total principal debt outstanding less total cash on hand as of the end of such period, as compared to trailing-twelve-months Adjusted EBITDA), after taking the Enhanced Distribution for such prior year into effect. Free cash flow and Adjusted EBITDA are defined under the caption Reconciliation of Non-GAAP Financial Measures within Part I, Item 2 of this Form 10-Q. In April 2023, the Board approved an Enhanced Distribution of $0.356 per unit, or $140.1 million, related to the Partnership’s 2022 performance. 3. PARTNERSHIP 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 4 . WES Operating made the following cash distributions to its limited partners for the periods presented: thousands Quarters Ended Total Quarterly Distribution 2022 March 31 $ 213,513 May 2022 June 30 213,513 August 2022 September 30 213,513 November 2022 December 31 213,513 February 2023 2023 March 31 (1) $ 342,895 May 2023 _________________________________________________________________________________________ (1) Includes amounts related to the Enhanced Distribution discussed above.

Equity and Partners' Capital

Equity and Partners' Capital	3 Months Ended
	Mar. 31, 2023
Partners' Capital Notes [Abstract]
Equity and Partners' Capital	4. 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 March 31, 2023, Occidental held 190,281,578 common units, representing a 48.3% 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 2.3% general partner interest in the Partnership. The public held 194,333,649 common units, representing a 49.4% limited partner interest in the Partnership. Partnership equity repurchases. In 2022, the Board authorized the Partnership to buy back up to $1.25 billion of the Partnership’s common units through December 31, 2024 (the “$1.25 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 three months ended March 31, 2023, the Partnership repurchased 285,688 common units for an aggregate purchase price of $7.1 million. During the three months ended March 31, 2022, the Partnership repurchased 225,355 common units on the open market for an aggregate purchase price of $5.1 million. The units were canceled immediately upon receipt. As of March 31, 2023, the Partnership had an authorized amount of $755.3 million remaining under the program. Holdings of WES Operating equity. As of March 31, 2023, (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. The following table provides a reconciliation between basic and diluted net income (loss) per common unit: Three Months Ended thousands except per-unit amounts 2023 2022 Net income (loss) Limited partners’ interest in net income (loss) $ 198,959 $ 301,934 Weighted-average common units outstanding Basic 384,468 403,254 Dilutive effect of non-vested phantom units 1,282 1,206 Diluted 385,750 404,460 Excluded due to anti-dilutive effect 663 469 Net income (loss) per common unit Basic $ 0.52 $ 0.75 Diluted $ 0.52 $ 0.75 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	3 Months Ended
	Mar. 31, 2023
Related Party Fees and Other Arrangements, Limited Liability Company (LLC) or Limited Partnership (LP) [Abstract]
Related-Party Transactions	5. 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 thousands 2023 2022 Revenues and other Service revenues – fee based $ 423,501 $ 414,899 Service revenues – product based 8,116 2,243 Product sales 17,168 11,567 Total revenues and other 448,785 428,709 Equity income, net – related parties (1) 39,021 49,607 Operating expenses Cost of product (2) (3,947) (19,543) Operation and maintenance 747 (59) General and administrative (3) 67 1,975 Total operating expenses (3,133) (17,627) _________________________________________________________________________________________ (1) See Note 6 . (2) Includes related-party natural - gas and NGLs imbalances. (3) Includes 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. Consolidated balance sheets thousands March 31, December 31, Assets Accounts receivable, net $ 307,570 $ 313,937 Other current assets 4,175 1,578 Equity investments (1) 931,852 944,696 Other assets 36,158 29,058 Total assets 1,279,755 1,289,269 Liabilities Accounts and imbalance payables 19,490 32,150 Accrued liabilities 6,109 11,756 Other liabilities (2) 293,077 268,399 Total liabilities 318,676 312,305 _________________________________________________________________________________________ (1) See Note 6 . (2) Includes contract liabilities from contracts with customers. See Note 2 . 5. RELATED-PARTY TRANSACTIONS Consolidated statements of cash flows Three Months Ended thousands 2023 2022 Distributions from equity - investment earnings – related parties $ 39,609 $ 45,870 Contributions to equity investments – related parties (110) (2,070) Distributions from equity investments in excess of cumulative earnings – related parties 12,366 9,925 Distributions to Partnership unitholders (1) (99,671) (68,455) Distributions to WES Operating unitholders (2) (4,271) (2,805) Net contributions from (distributions to) related parties — 409 _________________________________________________________________________________________ (1) Represents common and general partner unit distributions paid to Occidental pursuant to the partnership agreement of the Partnership (see Note 3 and Note 4 ). (2) Represents distributions paid to Occidental, through its ownership of WGRAH, pursuant to WES Operating’s partnership agreement (see Note 3 and Note 4 ). 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 thousands 2023 2022 General and administrative (1) $ 1,281 $ 2,948 _________________________________________________________________________________________ (1) Includes (i) an intercompany service fee between the Partnership and WES Operating and (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. Consolidated balance sheets thousands March 31, December 31, Accounts receivable, net $ 308,581 $ 313,937 Other current assets 3,720 1,487 Other assets 34,442 28,459 Accounts and imbalance payables (1) 19,490 76,131 Accrued liabilities 5,792 11,439 _________________________________________________________________________________________ (1) Includes balances related to transactions between the Partnership and WES Operating. 5. RELATED-PARTY TRANSACTIONS Consolidated statements of cash flows Three Months Ended thousands 2023 2022 Distributions to WES Operating unitholders (1) $ (213,513) $ (140,217) _________________________________________________________________________________________ (1) Represents distributions paid to the Partnership and Occidental, through its ownership of WGRAH, pursuant to WES Operating’s partnership agreement. See Note 3 and Note 4 . 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 (see also Part II, Item 5 of this Form 10-Q). 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 months ended March 31, 2023 and 2022, 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 months ended March 31, 2023 and 2022, respectively. Produced-water throughput attributable to production owned or controlled by Occidental was 80% and 84% for the three months ended March 31, 2023 and 2022, respectively. The Partnership is currently discussing varying interpretations of certain contractual provisions 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 discussions are 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 ended as of September 30, 2022. Marketing Transition Services Agreement. During the year ended December 31, 2020, Occidental provided marketing-related services to certain of the Partnership’s subsidiaries (the “Marketing Transition Services Agreement”). While the Partnership still has some marketing agreements with affiliates of Occidental, on January 1, 2021, the Partnership began marketing and selling substantially all of its crude oil and residue gas, and a majority of its NGLs, directly to third parties. 5. RELATED-PARTY TRANSACTIONS Operating leases. The Partnership has entered into operating leases with Occidental for corporate offices, shared field offices, and easements supporting the Partnership’s operations. Also, 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 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 through 2038, the remaining term of the agreements. 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 section above. Related - party expenses bear no direct relationship to related - party revenues, and third - party expenses bear no direct relationship to third - party revenues. 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. Construction reimbursement agreements and purchases and sales with 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 and sells equipment, inventory, and other miscellaneous assets from or to 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	3 Months Ended
	Mar. 31, 2023
Equity Method Investments and Joint Ventures [Abstract]
Equity Investments	6. EQUITY INVESTMENTS The following table presents the financial statement impact of the Partnership’s equity investments for the three months ended March 31, 2023: thousands Balance at December 31, 2022 Equity Contributions Distributions Distributions in excess of cumulative earnings (1) Balance at March 31, 2023 White Cliffs $ 16,095 $ 538 $ — $ (164) $ (858) $ 15,611 Rendezvous 16,114 (715) — (100) (476) 14,823 Mont Belvieu JV 91,310 6,884 — (6,893) (382) 90,919 TEG 15,856 1,655 — (1,661) (74) 15,776 TEP 184,687 10,079 — (10,141) (3,069) 181,556 FRP 192,716 9,963 — (10,007) (3,353) 189,319 Whitethorn LLC 146,595 (184) 110 509 — 147,030 Saddlehorn 104,191 5,238 — (5,123) (394) 103,912 Panola 19,311 567 — (698) (59) 19,121 Mi Vida 48,862 1,477 — (1,812) (2,956) 45,571 Red Bluff Express 108,959 3,519 — (3,519) (745) 108,214 Total $ 944,696 $ 39,021 $ 110 $ (39,609) $ (12,366) $ 931,852 _________________________________________________________________________________________ (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	3 Months Ended
	Mar. 31, 2023
Property, Plant and Equipment [Abstract]
Property, Plant, and Equipment	7. PROPERTY, PLANT, AND EQUIPMENT A summary of the historical cost of property, plant, and equipment is as follows: thousands Estimated Useful Life March 31, December 31, Land N/A $ 10,982 $ 10,982 Gathering systems – pipelines 30 years 5,555,746 5,519,592 Gathering systems – compressors 15 years 2,331,782 2,266,410 Processing complexes and treating facilities 25 years 3,437,494 3,419,201 Transportation pipeline and equipment 4 to 48 years 175,394 174,241 Produced - water disposal systems 20 years 976,958 932,627 Assets under construction N/A 270,503 263,353 Other 3 to 40 years 791,201 779,187 Total property, plant, and equipment 13,550,060 13,365,593 Less accumulated depreciation 5,008,838 4,823,993 Net property, plant, and equipment $ 8,541,222 $ 8,541,600 “Assets under construction” represents property that is not yet placed into productive service as of the respective balance sheet date and is excluded from capitalized costs being depreciated.

Selected Components of Working

Selected Components of Working Capital	3 Months Ended
	Mar. 31, 2023
Selected Components Of Working Capital [Abstract]
Selected Components of Working Capital	8. SELECTED COMPONENTS OF WORKING CAPITAL A summary of accounts receivable, net is as follows: The Partnership WES Operating thousands March 31, 2023 December 31, 2022 March 31, 2023 December 31, 2022 Trade receivables, net $ 558,300 $ 548,859 $ 559,311 $ 548,859 Other receivables, net — 5,404 — 5,404 Total accounts receivable, net $ 558,300 $ 554,263 $ 559,311 $ 554,263 A summary of other current assets is as follows: The Partnership WES Operating thousands March 31, 2023 December 31, 2022 March 31, 2023 December 31, 2022 NGLs inventory $ 2,792 $ 3,797 $ 2,792 $ 3,797 Imbalance receivables 34,146 32,658 34,146 32,658 Prepaid insurance 10,975 13,262 9,355 11,139 Contract assets 7,937 3,381 7,937 3,381 Other 8,503 6,408 8,047 6,316 Total other current assets $ 64,353 $ 59,506 $ 62,277 $ 57,291 A summary of accrued liabilities is as follows: The Partnership WES Operating thousands March 31, 2023 December 31, 2022 March 31, 2023 December 31, 2022 Accrued interest expense $ 58,541 $ 110,486 $ 58,541 $ 110,486 Short - term asset retirement obligations 6,159 10,493 6,159 10,493 Short - term remediation and reclamation obligations 6,648 5,383 6,648 5,383 Income taxes payable 2,920 2,428 2,920 2,428 Contract liabilities 14,307 20,903 14,307 20,903 Accrued payroll and benefits 24,914 44,855 — — Other 50,009 60,092 49,798 47,596 Total accrued liabilities $ 163,498 $ 254,640 $ 138,373 $ 197,289

Debt and Interest Expense

Debt and Interest Expense	3 Months Ended
	Mar. 31, 2023
Debt Instruments [Abstract]
Debt and Interest Expense	9. 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: March 31, 2023 December 31, 2022 thousands Principal Carrying Fair Value (1) Principal Carrying Fair Value (1) Short - term debt Floating - Rate Senior Notes due 2023 $ — $ — $ — $ 213,138 $ 213,121 $ 214,823 Finance lease liabilities 2,714 2,714 2,714 2,659 2,659 2,659 Total short - term debt $ 2,714 $ 2,714 $ 2,714 $ 215,797 $ 215,780 $ 217,482 Long - term debt 3.100% Senior Notes due 2025 $ 730,706 $ 728,273 $ 703,032 $ 730,706 $ 727,953 $ 692,491 3.950% Senior Notes due 2025 399,163 397,056 383,140 399,163 396,825 379,107 4.650% Senior Notes due 2026 474,242 472,299 459,488 474,242 472,161 452,201 4.500% Senior Notes due 2028 400,000 396,840 378,827 400,000 396,698 368,346 4.750% Senior Notes due 2028 400,000 397,443 381,273 400,000 397,340 368,141 4.050% Senior Notes due 2030 1,200,000 1,191,606 1,101,320 1,200,000 1,191,345 1,053,038 5.450% Senior Notes due 2044 600,000 593,915 524,661 600,000 593,878 503,742 5.300% Senior Notes due 2048 700,000 687,553 598,444 700,000 687,494 580,570 5.500% Senior Notes due 2048 350,000 342,815 302,297 350,000 342,783 291,194 5.250% Senior Notes due 2050 1,000,000 984,006 859,814 1,000,000 983,945 829,804 RCF 495,000 495,000 495,000 375,000 375,000 375,000 Finance lease liabilities 7,135 7,135 7,135 4,160 4,160 4,160 Total long - term debt $ 6,756,246 $ 6,693,941 $ 6,194,431 $ 6,633,271 $ 6,569,582 $ 5,897,794 _________________________________________________________________________________________ (1) Fair value is measured using the market approach and Level - 2 fair value inputs. Debt activity. The following table presents the debt activity for the three months ended March 31, 2023: thousands Carrying Value Balance at December 31, 2022 $ 6,785,362 RCF borrowings 220,000 Repayments of RCF borrowings (100,000) Repayment of Floating-Rate Senior Notes due 2023 (213,138) Finance lease liabilities 3,030 Other 1,401 Balance at March 31, 2023 $ 6,696,655 9. DEBT AND INTEREST EXPENSE 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, 5.250% Senior Notes due 2050, and the Floating - Rate Senior Notes due 2023. 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 March 31, 2023 and 2022. The effective interest rate of these notes is subject to adjustment from time to time due to a change in credit rating. During the first quarter of 2023, WES Operating redeemed the total principal amount outstanding on the Floating-Rate Senior Notes due 2023 at par value with cash on hand. In April 2023, WES Operating completed the public offering of $750.0 million in aggregate principal amount of 6.150% Senior Notes due 2033. Interest will be payable semi-annually on April 1st and October 1st of each year, with the initial interest payment being due on October 1, 2023. Net proceeds from the offering were used to repay borrowings under the RCF and for general partnership purposes. 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. As of March 31, 2023, WES Operating was in compliance with all covenants under the relevant governing indentures. Revolving credit facility. WES Operating’s $2.0 billion senior unsecured revolving credit facility (“RCF”), which is expandable to a maximum of $2.5 billion, matures in February 2026 for each extending lender. 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 March 31, 2023, there were $495.0 million of outstanding borrowings and $5.1 million of outstanding letters of credit, resulting in $1.5 billion of available borrowing capacity under the RCF. As of March 31, 2023 and 2022, the interest rate on any outstanding RCF borrowings was 6.21% and 1.95%, respectively. The facility - fee rate was 0.20% and 0.25% at March 31, 2023 and 2022, respectively. As of March 31, 2023, the outstanding borrowings under the RCF were classified as long-term debt on the consolidated balance sheet and WES Operating was in compliance with all covenants under the RCF. In April 2023, WES Operating (i) repaid all outstanding borrowings under the RCF with proceeds from the senior note offering, and (ii) entered into an amendment to its RCF to, among other things, extend the maturity date to April 2028 and provide for a maximum borrowing capacity up to $2.0 billion through the maturity date. Interest expense. The following table summarizes the amounts included in interest expense: Three Months Ended thousands 2023 2022 Long - term and short - term debt $ (81,151) $ (83,428) Finance lease liabilities (163) (42) Commitment fees and amortization of debt-related costs (2,881) (3,032) Capitalized interest 2,525 1,047 Interest expense $ (81,670) $ (85,455)

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	10. 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 March 31, 2023, and December 31, 2022, the consolidated balance sheets included $9.2 million and $7.4 million, respectively, of liabilities for remediation and reclamation obligations. The current portion of these amounts is included in Accrued liabilities Note 8 . 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)	3 Months Ended
	Mar. 31, 2023
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 (see Note 6) : 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 % 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 % 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 2022 Form 10-K, as filed with the SEC on February 22, 2023. Management believes that the disclosures made are adequate to make the information not misleading. 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. 1. DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION 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 March 31, 2023 (see Note 6 ). 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% limited partner interest in WES Operating owned by an Occidental subsidiary. WES Operating’s noncontrolling interest in the consolidated financial statements consists of the 25% third - party interest in Chipeta. See Note 4.
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.
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. The following table provides a reconciliation between basic and diluted net income (loss) per common unit: Three Months Ended thousands except per-unit amounts 2023 2022 Net income (loss) Limited partners’ interest in net income (loss) $ 198,959 $ 301,934 Weighted-average common units outstanding Basic 384,468 403,254 Dilutive effect of non-vested phantom units 1,282 1,206 Diluted 385,750 404,460 Excluded due to anti-dilutive effect 663 469 Net income (loss) per common unit Basic $ 0.52 $ 0.75 Diluted $ 0.52 $ 0.75 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)	3 Months Ended
	Mar. 31, 2023
Accounting Policies [Abstract]
Assets and Investments Table	As of March 31, 2023, 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 25 3 — 3 NGLs pipelines 2 — — 5 Natural - gas pipelines 6 — — 1 Crude - oil pipelines 3 1 — 3 _________________________________________________________________________________________ (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 (see Note 6) : 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 % 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 % 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)	3 Months Ended
	Mar. 31, 2023
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 thousands 2023 2022 Revenue from customers Service revenues – fee based $ 647,867 $ 631,598 Service revenues – product based 46,810 40,867 Product sales 39,025 85,589 Total revenue from customers 733,702 758,054 Revenue from other than customers Other 280 243 Total revenues and other $ 733,982 $ 758,297
Contract Balances Tables	The following table summarizes activity related to contract assets from contracts with customers: thousands Contract assets balance at December 31, 2022 $ 22,561 Amounts transferred to Accounts receivable, net that were included in the contract assets balance at the beginning of the period (1,307) Additional estimated revenues recognized 5,231 Contract assets balance at March 31, 2023 $ 26,485 Contract assets at March 31, 2023 Other current assets $ 7,937 Other assets 18,548 Total contract assets from contracts with customers $ 26,485 thousands Contract liabilities balance at December 31, 2022 $ 369,285 Cash received or receivable, excluding revenues recognized during the period 23,738 Revenues recognized that were included in the contract liability balance at the beginning of the period (10,179) Contract liabilities balance at March 31, 2023 $ 382,844 Contract liabilities at March 31, 2023 Accrued liabilities $ 14,307 Other liabilities 368,537 Total contract liabilities from contracts with customers $ 382,844
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 2023 $ 826,454 2024 1,138,601 2025 1,078,564 2026 923,013 2027 832,803 Thereafter 1,915,544 Total $ 6,714,979

Partnership Distributions (Tabl

Partnership Distributions (Tables)	3 Months Ended
	Mar. 31, 2023
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 2022 March 31 $ 0.500 $ 206,197 May 13, 2022 May 2, 2022 June 30 0.500 197,744 August 12, 2022 August 1, 2022 September 30 0.500 197,065 November 14, 2022 October 31, 2022 December 31 0.500 196,569 February 13, 2023 February 1, 2023 2023 March 31 (1) $ 0.856 $ 336,987 May 15, 2023 May 1, 2023 _________________________________________________________________________________________ (1) Includes the regular quarterly distribution of $0.500 per unit, or $196.8 million, as well as the Enhanced Distribution of $0.356 per unit discussed below. thousands Quarters Ended Total Quarterly Distribution 2022 March 31 $ 213,513 May 2022 June 30 213,513 August 2022 September 30 213,513 November 2022 December 31 213,513 February 2023 2023 March 31 (1) $ 342,895 May 2023 _________________________________________________________________________________________ (1) Includes amounts related to the Enhanced Distribution discussed above.

Equity and Partners' Capital (T

Equity and Partners' Capital (Tables)	3 Months Ended
	Mar. 31, 2023
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 thousands except per-unit amounts 2023 2022 Net income (loss) Limited partners’ interest in net income (loss) $ 198,959 $ 301,934 Weighted-average common units outstanding Basic 384,468 403,254 Dilutive effect of non-vested phantom units 1,282 1,206 Diluted 385,750 404,460 Excluded due to anti-dilutive effect 663 469 Net income (loss) per common unit Basic $ 0.52 $ 0.75 Diluted $ 0.52 $ 0.75

Related-Party Transactions (Tab

Related-Party Transactions (Tables)	3 Months Ended
	Mar. 31, 2023
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 thousands 2023 2022 Revenues and other Service revenues – fee based $ 423,501 $ 414,899 Service revenues – product based 8,116 2,243 Product sales 17,168 11,567 Total revenues and other 448,785 428,709 Equity income, net – related parties (1) 39,021 49,607 Operating expenses Cost of product (2) (3,947) (19,543) Operation and maintenance 747 (59) General and administrative (3) 67 1,975 Total operating expenses (3,133) (17,627) _________________________________________________________________________________________ (1) See Note 6 . (2) Includes related-party natural - gas and NGLs imbalances. (3) Includes 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. Consolidated balance sheets thousands March 31, December 31, Assets Accounts receivable, net $ 307,570 $ 313,937 Other current assets 4,175 1,578 Equity investments (1) 931,852 944,696 Other assets 36,158 29,058 Total assets 1,279,755 1,289,269 Liabilities Accounts and imbalance payables 19,490 32,150 Accrued liabilities 6,109 11,756 Other liabilities (2) 293,077 268,399 Total liabilities 318,676 312,305 _________________________________________________________________________________________ (1) See Note 6 . (2) Includes contract liabilities from contracts with customers. See Note 2 . 5. RELATED-PARTY TRANSACTIONS Consolidated statements of cash flows Three Months Ended thousands 2023 2022 Distributions from equity - investment earnings – related parties $ 39,609 $ 45,870 Contributions to equity investments – related parties (110) (2,070) Distributions from equity investments in excess of cumulative earnings – related parties 12,366 9,925 Distributions to Partnership unitholders (1) (99,671) (68,455) Distributions to WES Operating unitholders (2) (4,271) (2,805) Net contributions from (distributions to) related parties — 409 _________________________________________________________________________________________ (1) Represents common and general partner unit distributions paid to Occidental pursuant to the partnership agreement of the Partnership (see Note 3 and Note 4 ). (2) Represents distributions paid to Occidental, through its ownership of WGRAH, pursuant to WES Operating’s partnership agreement (see Note 3 and Note 4 ).
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 thousands 2023 2022 General and administrative (1) $ 1,281 $ 2,948 _________________________________________________________________________________________ (1) Includes (i) an intercompany service fee between the Partnership and WES Operating and (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. Consolidated balance sheets thousands March 31, December 31, Accounts receivable, net $ 308,581 $ 313,937 Other current assets 3,720 1,487 Other assets 34,442 28,459 Accounts and imbalance payables (1) 19,490 76,131 Accrued liabilities 5,792 11,439 _________________________________________________________________________________________ (1) Includes balances related to transactions between the Partnership and WES Operating. 5. RELATED-PARTY TRANSACTIONS Consolidated statements of cash flows Three Months Ended thousands 2023 2022 Distributions to WES Operating unitholders (1) $ (213,513) $ (140,217) _________________________________________________________________________________________ (1) Represents distributions paid to the Partnership and Occidental, through its ownership of WGRAH, pursuant to WES Operating’s partnership agreement. See Note 3 and Note 4

Equity Investments (Tables)

Equity Investments (Tables)	3 Months Ended
	Mar. 31, 2023
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 three months ended March 31, 2023: thousands Balance at December 31, 2022 Equity Contributions Distributions Distributions in excess of cumulative earnings (1) Balance at March 31, 2023 White Cliffs $ 16,095 $ 538 $ — $ (164) $ (858) $ 15,611 Rendezvous 16,114 (715) — (100) (476) 14,823 Mont Belvieu JV 91,310 6,884 — (6,893) (382) 90,919 TEG 15,856 1,655 — (1,661) (74) 15,776 TEP 184,687 10,079 — (10,141) (3,069) 181,556 FRP 192,716 9,963 — (10,007) (3,353) 189,319 Whitethorn LLC 146,595 (184) 110 509 — 147,030 Saddlehorn 104,191 5,238 — (5,123) (394) 103,912 Panola 19,311 567 — (698) (59) 19,121 Mi Vida 48,862 1,477 — (1,812) (2,956) 45,571 Red Bluff Express 108,959 3,519 — (3,519) (745) 108,214 Total $ 944,696 $ 39,021 $ 110 $ (39,609) $ (12,366) $ 931,852 _________________________________________________________________________________________ (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)	3 Months Ended
	Mar. 31, 2023
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 March 31, December 31, Land N/A $ 10,982 $ 10,982 Gathering systems – pipelines 30 years 5,555,746 5,519,592 Gathering systems – compressors 15 years 2,331,782 2,266,410 Processing complexes and treating facilities 25 years 3,437,494 3,419,201 Transportation pipeline and equipment 4 to 48 years 175,394 174,241 Produced - water disposal systems 20 years 976,958 932,627 Assets under construction N/A 270,503 263,353 Other 3 to 40 years 791,201 779,187 Total property, plant, and equipment 13,550,060 13,365,593 Less accumulated depreciation 5,008,838 4,823,993 Net property, plant, and equipment $ 8,541,222 $ 8,541,600

Selected Components of Workin_2

Selected Components of Working Capital (Tables)	3 Months Ended
	Mar. 31, 2023
Selected Components Of Working Capital [Abstract]
Accounts Receivable, Net Table	A summary of accounts receivable, net is as follows: The Partnership WES Operating thousands March 31, 2023 December 31, 2022 March 31, 2023 December 31, 2022 Trade receivables, net $ 558,300 $ 548,859 $ 559,311 $ 548,859 Other receivables, net — 5,404 — 5,404 Total accounts receivable, net $ 558,300 $ 554,263 $ 559,311 $ 554,263
Other Current Assets Table	A summary of other current assets is as follows: The Partnership WES Operating thousands March 31, 2023 December 31, 2022 March 31, 2023 December 31, 2022 NGLs inventory $ 2,792 $ 3,797 $ 2,792 $ 3,797 Imbalance receivables 34,146 32,658 34,146 32,658 Prepaid insurance 10,975 13,262 9,355 11,139 Contract assets 7,937 3,381 7,937 3,381 Other 8,503 6,408 8,047 6,316 Total other current assets $ 64,353 $ 59,506 $ 62,277 $ 57,291
Accrued Liabilities Table	A summary of accrued liabilities is as follows: The Partnership WES Operating thousands March 31, 2023 December 31, 2022 March 31, 2023 December 31, 2022 Accrued interest expense $ 58,541 $ 110,486 $ 58,541 $ 110,486 Short - term asset retirement obligations 6,159 10,493 6,159 10,493 Short - term remediation and reclamation obligations 6,648 5,383 6,648 5,383 Income taxes payable 2,920 2,428 2,920 2,428 Contract liabilities 14,307 20,903 14,307 20,903 Accrued payroll and benefits 24,914 44,855 — — Other 50,009 60,092 49,798 47,596 Total accrued liabilities $ 163,498 $ 254,640 $ 138,373 $ 197,289

Debt and Interest Expense (Tabl

Debt and Interest Expense (Tables)	3 Months Ended
	Mar. 31, 2023
Debt Instruments [Abstract]
Debt Outstanding and Debt Activity Tables	The following table presents the outstanding debt: March 31, 2023 December 31, 2022 thousands Principal Carrying Fair Value (1) Principal Carrying Fair Value (1) Short - term debt Floating - Rate Senior Notes due 2023 $ — $ — $ — $ 213,138 $ 213,121 $ 214,823 Finance lease liabilities 2,714 2,714 2,714 2,659 2,659 2,659 Total short - term debt $ 2,714 $ 2,714 $ 2,714 $ 215,797 $ 215,780 $ 217,482 Long - term debt 3.100% Senior Notes due 2025 $ 730,706 $ 728,273 $ 703,032 $ 730,706 $ 727,953 $ 692,491 3.950% Senior Notes due 2025 399,163 397,056 383,140 399,163 396,825 379,107 4.650% Senior Notes due 2026 474,242 472,299 459,488 474,242 472,161 452,201 4.500% Senior Notes due 2028 400,000 396,840 378,827 400,000 396,698 368,346 4.750% Senior Notes due 2028 400,000 397,443 381,273 400,000 397,340 368,141 4.050% Senior Notes due 2030 1,200,000 1,191,606 1,101,320 1,200,000 1,191,345 1,053,038 5.450% Senior Notes due 2044 600,000 593,915 524,661 600,000 593,878 503,742 5.300% Senior Notes due 2048 700,000 687,553 598,444 700,000 687,494 580,570 5.500% Senior Notes due 2048 350,000 342,815 302,297 350,000 342,783 291,194 5.250% Senior Notes due 2050 1,000,000 984,006 859,814 1,000,000 983,945 829,804 RCF 495,000 495,000 495,000 375,000 375,000 375,000 Finance lease liabilities 7,135 7,135 7,135 4,160 4,160 4,160 Total long - term debt $ 6,756,246 $ 6,693,941 $ 6,194,431 $ 6,633,271 $ 6,569,582 $ 5,897,794 _________________________________________________________________________________________ (1) Fair value is measured using the market approach and Level - 2 fair value inputs. Debt activity. The following table presents the debt activity for the three months ended March 31, 2023: thousands Carrying Value Balance at December 31, 2022 $ 6,785,362 RCF borrowings 220,000 Repayments of RCF borrowings (100,000) Repayment of Floating-Rate Senior Notes due 2023 (213,138) Finance lease liabilities 3,030 Other 1,401 Balance at March 31, 2023 $ 6,696,655
Interest Expense Table	The following table summarizes the amounts included in interest expense: Three Months Ended thousands 2023 2022 Long - term and short - term debt $ (81,151) $ (83,428) Finance lease liabilities (163) (42) Commitment fees and amortization of debt-related costs (2,881) (3,032) Capitalized interest 2,525 1,047 Interest expense $ (81,670) $ (85,455)

Description of Business and B_4

Description of Business and Basis of Presentation - Assets and Investments Table (Details)	Mar. 31, 2023 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	25
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	6
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	3
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	3

Description of Business and B_5

Description of Business and Basis of Presentation - Ownership Interests and Method of Consolidation Table (Details)	3 Months Ended
	Mar. 31, 2023
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] | 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] | 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
	Mar. 31, 2023	Mar. 31, 2022
Long-Term Incentive Plans [Member]
Equity-based compensation, number of units issued	829,931
Equity-based compensation, expense	$ 7.2	$ 5.8
WES Operating [Member]
Ownership interest by noncontrolling interest owner	2%
Chipeta [Member]
Ownership interest by noncontrolling interest owner	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
		Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Revenue from customers		$ 733,702	$ 758,054
Revenue from other than customers, other		280	243
Total revenues and other	[1]	733,982	758,297
Service Revenues - Fee Based [Member]
Disaggregation of Revenue [Line Items]
Revenue from customers		647,867	631,598
Total revenues and other		647,867	631,598
Service Revenues - Product Based [Member]
Disaggregation of Revenue [Line Items]
Revenue from customers		46,810	40,867
Total revenues and other		46,810	40,867
Product Sales [Member]
Disaggregation of Revenue [Line Items]
Revenue from customers		39,025	85,589
Total revenues and other		$ 39,025	$ 85,589
[1] Total revenues and other includes related-party amounts of $448.8 million and $428.7 million for the three months ended March 31, 2023 and 2022, respectively. See Note 5 .

Revenue from Contracts with C_4

Revenue from Contracts with Customers - Contract Assets Table (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Change in Contracts with Customer, Asset [Roll Forward]
Contract assets balance at beginning of year	$ 22,561
Amounts transferred to Accounts receivable, net that were included in the contract assets balance at the beginning of the period	(1,307)
Additional estimated revenues recognized	5,231
Contract assets balance at end of period	26,485
Contract Assets [Abstract]
Other current assets	7,937	$ 3,381
Other assets	18,548
Total contract assets from contracts with customers	$ 26,485	$ 22,561

Revenue from Contracts with C_5

Revenue from Contracts with Customers - Contract Liabilities Table (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Change in Contracts with Customer, Liability [Roll Forward]
Contract liabilities balance at begining of year	$ 369,285
Cash received or receivable, excluding revenues recognized during the period	23,738
Revenues recognized that were included in the contract liability balance at the beginning of the period	(10,179)
Contract liabilities balance at end of period	382,844
Contract Liabilities [Abstract]
Accrued liabilities	14,307	$ 20,903
Other liabilities	368,537
Total contract liabilities from contracts with customers	$ 382,844	$ 369,285

Revenue from Contracts with C_6

Revenue from Contracts with Customers - Expected Revenues Table (Details) $ in Thousands	Mar. 31, 2023 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligation expected to be satisfied	$ 6,714,979
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligation expected to be satisfied	$ 826,454
Performance obligation expected to be satisfied, expected timing	9 months
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	$ 1,138,601
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	$ 1,078,564
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	$ 923,013
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	$ 832,803
Performance obligation expected to be satisfied, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligation expected to be satisfied	$ 1,915,544
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	Mar. 31, 2023	Dec. 31, 2022
Revenue from Contracts with Customer [Line Items]
Accounts receivable, net	$ 558,300	$ 554,263
Customers [Member]
Revenue from Contracts with Customer [Line Items]
Accounts receivable, net	$ 555,300	$ 545,000

Partnership Distributions - Cas

Partnership Distributions - Cash Distributions Tables (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022
Distribution Made to Limited Partner [Line Items]
Total quarterly per-unit distribution	$ 0.856	$ 0.500	$ 0.500	$ 0.500	$ 0.500
Total quarterly cash distribution	$ 336,987	$ 196,569	$ 197,065	$ 197,744	$ 206,197
Base quarterly per-unit distribution	$ 0.500
Base quarterly cash distribution	$ 196,800
Enhanced quarterly per-unit distribution	$ 0.356
WES Operating [Member]
Distribution Made to Limited Partner [Line Items]
Total quarterly cash distribution	$ 342,895	$ 213,513	$ 213,513	$ 213,513	$ 213,513

Partnership Distributions - Add

Partnership Distributions - Additional Information (Details) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($)
Distribution Made to Limited Partner [Line Items]
Enhanced quarterly cash distribution	$ 140.1
WES [Member]
Distribution Made to Limited Partner [Line Items]
Partnership agreement day requirement of distribution of available cash	55 days

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
		Mar. 31, 2023	Mar. 31, 2022
Equity [Abstract]
Limited partners' interest in net income (loss)	[1]	$ 198,959	$ 301,934
Weighted-average common units outstanding
Basic	[1]	384,468	403,254
Dilutive effect of non-vested phantom units		1,282	1,206
Diluted	[1]	385,750	404,460
Excluded due to anti-dilutive effect		663	469
Net income (loss) per common unit
Basic	[1]	$ 0.52	$ 0.75
Diluted	[1]	$ 0.52	$ 0.75
[1] See Note 4.

Equity and Partners' Capital _2

Equity and Partners' Capital - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Nov. 02, 2022
Schedule of Investments [Line Items]
Common units outstanding	384,615,227		384,070,984
General partner units outstanding	9,060,641		9,060,641
Unit repurchases, authorized amount				$ 1,250,000,000
Unit repurchases, amount	$ 7,061,000	$ 5,149,000
Unit repurchases, remaining authorized amount	$ 755,300,000
Public [Member]
Schedule of Investments [Line Items]
Unit repurchases, number of units	285,688	225,355
Unit repurchases, amount	$ 7,100,000	$ 5,100,000
WES [Member] | Public [Member]
Schedule of Investments [Line Items]
Common units outstanding	194,333,649
Limited partner's interest	49.40%
WES [Member] | WES Operating [Member]
Schedule of Investments [Line Items]
Limited partner's interest	98%
Occidental [Member] | WES [Member]
Schedule of Investments [Line Items]
Common units outstanding	190,281,578
Limited partner's interest	48.30%
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
		Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Consolidated statements of operations [Abstract]
Revenues and other	[1]	$ 733,982	$ 758,297
Equity income, net – related parties		39,021	49,607
Cost of product		51,459	72,848
Operation and maintenance		174,239	128,976
General and administrative		51,117	48,602
Total operating expenses	[2]	480,673	403,450
Consolidated balance sheets [Abstract]
Accounts receivable, net		558,300		$ 554,263
Other current assets		64,353		59,506
Equity investments		931,852		944,696
Other assets	[3]	194,175		167,049
Total assets	[4]	11,112,488		11,271,628
Accounts and imbalance payables		362,398		360,562
Accrued liabilities		163,498		254,640
Other liabilities		426,590		385,629
Total liabilities	[5]	8,010,924		8,163,513
Consolidated statements of cash flows [Abstract]
Distributions from equity-investment earnings – related parties		39,609	45,870
Contributions to equity investments – related parties		(110)	(2,070)
Distributions from equity investments in excess of cumulative earnings – related parties		12,366	9,925
Distributions to Partnership unitholders	[6]	(196,569)	(134,749)
Net contributions from (distributions to) related parties		0	409
Service Revenues - Fee Based [Member]
Consolidated statements of operations [Abstract]
Revenues and other		647,867	631,598
Service Revenues - Product Based [Member]
Consolidated statements of operations [Abstract]
Revenues and other		46,810	40,867
Product Sales [Member]
Consolidated statements of operations [Abstract]
Revenues and other		39,025	85,589
Related Parties [Member]
Consolidated statements of operations [Abstract]
Revenues and other		448,785	428,709
Cost of product		(3,947)	(19,543)
Operation and maintenance		747	(59)
General and administrative		67	1,975
Total operating expenses		(3,133)	(17,627)
Consolidated balance sheets [Abstract]
Accounts receivable, net		307,570		313,937
Other current assets		4,175		1,578
Other assets		36,158		29,058
Total assets		1,279,755		1,289,269
Accounts and imbalance payables		19,490		32,150
Accrued liabilities		6,109		11,756
Other liabilities		293,077		268,399
Total liabilities		318,676		$ 312,305
Consolidated statements of cash flows [Abstract]
Distributions to Partnership unitholders		(99,671)	(68,455)
Related Parties [Member] | WES Operating [Member]
Consolidated statements of cash flows [Abstract]
Distributions to Partnership unitholders		(4,271)	(2,805)
Related Parties [Member] | Service Revenues - Fee Based [Member]
Consolidated statements of operations [Abstract]
Revenues and other		423,501	414,899
Related Parties [Member] | Service Revenues - Product Based [Member]
Consolidated statements of operations [Abstract]
Revenues and other		8,116	2,243
Related Parties [Member] | Product Sales [Member]
Consolidated statements of operations [Abstract]
Revenues and other		$ 17,168	$ 11,567
[1] Total revenues and other includes related-party amounts of $448.8 million and $428.7 million for the three months ended March 31, 2023 and 2022, respectively. See Note 5 . Total operating expenses includes related-party amounts of $(3.1) million and $(17.6) million for the three months ended March 31, 2023 and 2022, respectively. See Note 5 . Other assets includes $6.3 million and $6.5 million of NGLs line - fill inventory as of March 31, 2023, and December 31, 2022, respectively. Other assets also includes $77.4 million and $60.4 million of materials and supplies inventory as of March 31, 2023, and December 31, 2022, respectively. Total assets includes related - party amounts of $1.3 billion as of March 31, 2023, and December 31, 2022, which includes related - party Accounts receivable, net of $307.6 million and $313.9 million as of March 31, 2023, and December 31, 2022, respectively. See Note 5 . Total liabilities includes related - party amounts of $318.7 million and $312.3 million as of March 31, 2023, and December 31, 2022, respectively. See Note 5 . Includes related-party amounts. See Note 5 .

Related-Party Transactions - _2

Related-Party Transactions - Summary of WES Operating Related-Party Transactions Tables (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Consolidated statements of operations [Abstract]
General and administrative		$ 51,117	$ 48,602
Consolidated balance sheets [Abstract]
Accounts receivable, net		558,300		$ 554,263
Other current assets		64,353		59,506
Other assets	[1]	194,175		167,049
Accounts and imbalance payables		362,398		360,562
Accrued liabilities		163,498		254,640
Consolidated statements of cash flows [Abstract]
Distributions to WES Operating unitholders	[2]	(196,569)	(134,749)
Related Parties [Member]
Consolidated statements of operations [Abstract]
General and administrative		67	1,975
Consolidated balance sheets [Abstract]
Accounts receivable, net		307,570		313,937
Other current assets		4,175		1,578
Other assets		36,158		29,058
Accounts and imbalance payables		19,490		32,150
Accrued liabilities		6,109		11,756
Consolidated statements of cash flows [Abstract]
Distributions to WES Operating unitholders		(99,671)	(68,455)
WES Operating [Member]
Consolidated statements of operations [Abstract]
General and administrative		50,885	47,861
Consolidated balance sheets [Abstract]
Accounts receivable, net		559,311		554,263
Other current assets		62,277		57,291
Other assets	[3]	192,459		166,450
Accounts and imbalance payables		362,347		404,468
Accrued liabilities		138,373		197,289
Consolidated statements of cash flows [Abstract]
Distributions to WES Operating unitholders	[4]	(213,513)	(140,217)
WES Operating [Member] | Related Parties [Member]
Consolidated statements of operations [Abstract]
General and administrative		1,281	2,948
Consolidated balance sheets [Abstract]
Accounts receivable, net		308,581		313,937
Other current assets		3,720		1,487
Other assets		34,442		28,459
Accounts and imbalance payables		19,490		76,131
Accrued liabilities		5,792		$ 11,439
Consolidated statements of cash flows [Abstract]
Distributions to WES Operating unitholders		$ (213,513)	$ (140,217)
[1] Other assets includes $6.3 million and $6.5 million of NGLs line - fill inventory as of March 31, 2023, and December 31, 2022, respectively. Other assets also includes $77.4 million and $60.4 million of materials and supplies inventory as of March 31, 2023, and December 31, 2022, respectively. Includes related-party amounts. See Note 5 . Other assets includes $6.3 million and $6.5 million of NGLs line - fill inventory as of March 31, 2023, and December 31, 2022, respectively. Other assets also includes $77.4 million and $60.4 million of materials and supplies inventory as of March 31, 2023, and December 31, 2022, respectively.

Related-Party Transactions - Ad

Related-Party Transactions - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Related Parties [Member]
Related Party Transaction [Line Items]
Right-of-use asset recognized			$ 30
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%
Crude Oil and NGLs Member]
Related Party Transaction [Line Items]
Related-party throughput percentage	88%	89%
Produced water [Member]
Related Party Transaction [Line Items]
Related-party throughput percentage	80%	84%

Equity Investments - Equity Inv

Equity Investments - Equity Investments Table (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year	$ 944,696
Equity income, net	39,021	$ 49,607
Contributions	110	2,070
Distributions	(39,609)	(45,870)
Distributions in excess of cumulative earnings	(12,366)	$ (9,925)
Balance at end of period	931,852
White Cliffs [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year	16,095
Equity income, net	538
Contributions	0
Distributions	(164)
Distributions in excess of cumulative earnings	(858)
Balance at end of period	15,611
Rendezvous [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year	16,114
Equity income, net	(715)
Contributions	0
Distributions	(100)
Distributions in excess of cumulative earnings	(476)
Balance at end of period	14,823
Mont Belvieu JV [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year	91,310
Equity income, net	6,884
Contributions	0
Distributions	(6,893)
Distributions in excess of cumulative earnings	(382)
Balance at end of period	90,919
Texas Express Gathering [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year	15,856
Equity income, net	1,655
Contributions	0
Distributions	(1,661)
Distributions in excess of cumulative earnings	(74)
Balance at end of period	15,776
Texas Express Pipeline [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year	184,687
Equity income, net	10,079
Contributions	0
Distributions	(10,141)
Distributions in excess of cumulative earnings	(3,069)
Balance at end of period	181,556
Front Range Pipeline [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year	192,716
Equity income, net	9,963
Contributions	0
Distributions	(10,007)
Distributions in excess of cumulative earnings	(3,353)
Balance at end of period	189,319
Whitethorn LLC [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year	146,595
Equity income, net	(184)
Contributions	110
Distributions	509
Distributions in excess of cumulative earnings	0
Balance at end of period	147,030
Saddlehorn [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year	104,191
Equity income, net	5,238
Contributions	0
Distributions	(5,123)
Distributions in excess of cumulative earnings	(394)
Balance at end of period	103,912
Panola [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year	19,311
Equity income, net	567
Contributions	0
Distributions	(698)
Distributions in excess of cumulative earnings	(59)
Balance at end of period	19,121
Mi Vida [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year	48,862
Equity income, net	1,477
Contributions	0
Distributions	(1,812)
Distributions in excess of cumulative earnings	(2,956)
Balance at end of period	45,571
Red Bluff Express [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year	108,959
Equity income, net	3,519
Contributions	0
Distributions	(3,519)
Distributions in excess of cumulative earnings	(745)
Balance at end of period	$ 108,214

Property, Plant, and Equipmen_2

Property, Plant, and Equipment - Historical Cost Table (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	$ 13,550,060	$ 13,365,593
Less accumulated depreciation	5,008,838	4,823,993
Net property, plant, and equipment	8,541,222	8,541,600
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	10,982	10,982
Gathering Systems – Pipelines [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	$ 5,555,746	5,519,592
Estimated useful life	30 years
Gathering Systems – Compressors [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	$ 2,331,782	2,266,410
Estimated useful life	15 years
Processing Complexes And Treating Facilities [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	$ 3,437,494	3,419,201
Estimated useful life	25 years
Transportation Pipeline And Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	$ 175,394	174,241
Transportation Pipeline And Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	4 years
Transportation Pipeline And Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	48 years
Produced-Water Disposal Systems [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	$ 976,958	932,627
Estimated useful life	20 years
Assets Under Construction [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	$ 270,503	263,353
Other [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	$ 791,201	$ 779,187
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
		Mar. 31, 2023	Mar. 31, 2022
Property, Plant and Equipment [Line Items]
Long-lived asset and other impairments	[1]	$ 52,401	$ 0
Rockies Assets
Property, Plant and Equipment [Line Items]
Long-lived asset and other impairments		52,100
Rockies Assets | Level-3 Inputs [Member] | Fair Value, Nonrecurring [Member] | Valuation, Income Approach [Member]
Property, Plant and Equipment [Line Items]
Estimated fair value		$ 22,800
[1] See Note 7 .

Selected Components of Workin_3

Selected Components of Working Capital - Accounts Receivable, Net Table (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Trade receivables, net	$ 558,300	$ 548,859
Other receivables, net	0	5,404
Total accounts receivable, net	558,300	554,263
WES Operating [Member]
Trade receivables, net	559,311	548,859
Other receivables, net	0	5,404
Total accounts receivable, net	$ 559,311	$ 554,263

Selected Components of Workin_4

Selected Components of Working Capital - Other Current Assets Table (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
NGLs inventory	$ 2,792	$ 3,797
Imbalance receivables	34,146	32,658
Prepaid insurance	10,975	13,262
Contract assets	7,937	3,381
Other	8,503	6,408
Total other current assets	64,353	59,506
WES Operating [Member]
NGLs inventory	2,792	3,797
Imbalance receivables	34,146	32,658
Prepaid insurance	9,355	11,139
Contract assets	7,937	3,381
Other	8,047	6,316
Total other current assets	$ 62,277	$ 57,291

Selected Components of Workin_5

Selected Components of Working Capital - Accrued Liabilities Table (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Accrued interest expense	$ 58,541	$ 110,486
Short-term asset retirement obligations	6,159	10,493
Short-term remediation and reclamation obligations	6,648	5,383
Income taxes payable	2,920	2,428
Contract liabilities	14,307	20,903
Accrued payroll and benefits	24,914	44,855
Other	50,009	60,092
Total accrued liabilities	163,498	254,640
WES Operating [Member]
Accrued interest expense	58,541	110,486
Short-term asset retirement obligations	6,159	10,493
Short-term remediation and reclamation obligations	6,648	5,383
Income taxes payable	2,920	2,428
Contract liabilities	14,307	20,903
Accrued payroll and benefits	0	0
Other	49,798	47,596
Total accrued liabilities	$ 138,373	$ 197,289

Debt and Interest Expense - Deb

Debt and Interest Expense - Debt Outstanding Table (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Total short-term debt, principal	$ 2,714	$ 215,797
Total short-term debt, carrying value	2,714	215,780
Total long-term debt, carrying value	6,693,941	6,569,582
Valuation, Market Approach [Member] | Level-2 Inputs [Member]
Debt Instrument [Line Items]
Short-term debt, fair value	2,714	217,482
Long-Term Debt Obligations [Member]
Debt Instrument [Line Items]
Total long-term debt, principal	6,756,246	6,633,271
Total long-term debt, carrying value	6,693,941	6,569,582
Long-Term Debt Obligations [Member] | Valuation, Market Approach [Member] | Level-2 Inputs [Member]
Debt Instrument [Line Items]
Long-term debt, fair value	6,194,431	5,897,794
WES Operating [Member]
Debt Instrument [Line Items]
Total short-term debt, carrying value	2,714	215,780
Total long-term debt, carrying value	6,693,941	6,569,582
WES Operating [Member] | Finance Lease Liability, Short Term [Member]
Debt Instrument [Line Items]
Finance leases - short-term debt	2,714	2,659
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	2,714	2,659
WES Operating [Member] | RCF [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Principal	495,000	375,000
Long-term debt, carrying value	495,000	375,000
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	495,000	375,000
WES Operating [Member] | Finance Lease Liability, Long Term [Member]
Debt Instrument [Line Items]
Finance leases - long-term debt	7,135	4,160
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	7,135	4,160
WES Operating [Member] | Senior Notes [Member] | Floating-Rate Senior Notes due 2023 [Member]
Debt Instrument [Line Items]
Principal	0	213,138
Short-term debt, carrying value	0	213,121
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]
Short-term debt, fair value	$ 0	214,823
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	730,706
Long-term debt, carrying value	728,273	727,953
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	$ 703,032	692,491
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	397,056	396,825
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	$ 383,140	379,107
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	472,299	472,161
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	$ 459,488	452,201
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	396,840	396,698
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	$ 378,827	368,346
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	397,443	397,340
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	$ 381,273	368,141
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	1,191,606	1,191,345
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	$ 1,101,320	1,053,038
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	593,915	593,878
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	$ 524,661	503,742
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	687,553	687,494
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	$ 598,444	580,570
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	342,815	342,783
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	$ 302,297	291,194
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	984,006	983,945
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	$ 859,814	$ 829,804

Debt and Interest Expense - D_2

Debt and Interest Expense - Debt Activity Table (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($)
Changes in Debt Outstanding [Roll Forward]
Beginning balance	$ 6,785,362
Ending balance	6,696,655
WES Operating [Member]
Changes in Debt Outstanding [Roll Forward]
Other	1,401
WES Operating [Member] | RCF [Member] | Revolving Credit Facility [Member]
Changes in Debt Outstanding [Roll Forward]
RCF borrowings	220,000
Repayments of RCF borrowings	(100,000)
WES Operating [Member] | Floating-Rate Senior Notes due 2023 [Member] | Senior Notes [Member]
Changes in Debt Outstanding [Roll Forward]
Repayments of senior notes	(213,138)
WES Operating [Member] | Finance Lease Liability [Member]
Changes in Debt Outstanding [Roll Forward]
Finance lease liabilities	$ 3,030

Debt and Interest Expense - Int

Debt and Interest Expense - Interest Expense Table (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Debt Instruments [Abstract]
Long-term and short-term debt	$ (81,151)	$ (83,428)
Finance lease liabilities	(163)	(42)
Commitment fees and amortization of debt-related costs	(2,881)	(3,032)
Capitalized interest	2,525	1,047
Interest expense	$ (81,670)	$ (85,455)

Debt and Interest Expense - Add

Debt and Interest Expense - Additional Information (Details) - WES Operating [Member] - USD ($)	3 Months Ended
	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Apr. 30, 2023	Dec. 31, 2022
RCF [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Principal amount	$ 495,000,000				$ 375,000,000
Facility, maximum borrowing capacity	2,000,000,000
Facility, expandable maximum borrowing capacity	2,500,000,000
Facility, outstanding borrowings	495,000,000
Facility, outstanding letters of credit	5,100,000
Facility, available borrowing capacity	$ 1,500,000,000
Facility, interest rate at period end	6.21%		1.95%
Facility, fee rate	0.20%		0.25%
RCF [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Facility, maximum borrowing capacity				$ 2,000,000,000
RCF [Member] | Revolving Credit Facility [Member] | Non-Extending Lenders [Member]
Debt Instrument [Line Items]
Facility, borrowing capacity for non-extending lender	$ 400,000,000
Senior Notes [Member] | 3.100% Senior Notes due 2025 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	3.10%
Senior note, effective interest rate	3.79%		3.79%
Principal amount	$ 730,706,000				730,706,000
Repayments of senior notes		$ 1,400,000
Senior Notes [Member] | 4.050% Senior Notes due 2030 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	4.05%
Senior note, effective interest rate	4.671%		4.671%
Principal amount	$ 1,200,000,000				1,200,000,000
Senior Notes [Member] | 5.250% Senior Notes due 2050 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	5.25%
Senior note, effective interest rate	5.869%		5.869%
Principal amount	$ 1,000,000,000				$ 1,000,000,000
Senior Notes [Member] | 6.150% Senior Notes due 2033 [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Senior note, interest rate				6.15%
Principal amount				$ 750,000,000
Senior Notes [Member] | 4.000% Senior Notes due 2022 [Member]
Debt Instrument [Line Items]
Senior note, interest rate		4%

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Liability for remediation and reclamation obligations	$ 9.2	$ 7.4
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]	Accrued Liabilities, Current, Other liabilities	Accrued Liabilities, Current, Other liabilities