Western Midstream Partners 10-Q6 Nov 242024 Q3 Quarterly reportFinancial data

Company Profile

Cover Page

Cover Page - shares	9 Months Ended
Cover Page - shares	Sep. 30, 2024	Nov. 01, 2024
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2024
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		380,555,427
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	2024
Document Fiscal Period Focus	Q3
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	Sep. 30, 2024
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	2024
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenues and other
Revenues and other	[1]	$ 883,362	$ 776,013	$ 2,676,720	$ 2,248,268
Equity income, net – related parties		23,977	35,494	84,227	116,839
Operating expenses
Cost of product		32,847	27,590	132,936	123,795
Operation and maintenance		231,066	204,434	649,324	562,104
General and administrative		64,726	55,050	195,498	159,572
Property and other taxes		12,635	14,583	43,984	39,961
Depreciation and amortization		166,015	147,363	487,438	435,481
Long-lived asset and other impairments	[2]	4,651	245	6,204	52,880
Total operating expenses	[3]	511,940	449,265	1,515,384	1,373,793
Gain (loss) on divestiture and other, net		467	(1,480)	299,426	(3,668)
Operating income (loss)		395,866	360,762	1,544,989	987,646
Interest expense		(94,149)	(82,754)	(279,177)	(250,606)
Gain (loss) on early extinguishment of debt		0	8,565	5,403	15,378
Other income (expense), net		9,565	(1,270)	16,124	2,817
Income (loss) before income taxes		311,282	285,303	1,287,339	755,235
Income tax expense (benefit)		15,390	905	17,667	2,980
Net income (loss)		295,892	284,398	1,269,672	752,255
Net income (loss) attributable to noncontrolling interests		7,412	7,102	29,714	18,393
Net income (loss) attributable to Western Midstream Partners, LP		288,480	277,296	1,239,958	733,862
Limited partners' interest in net income (loss):
Net income (loss) attributable to Western Midstream Partners, LP		288,480	277,296	1,239,958	733,862
General partner interest in net (income) loss		(6,708)	(6,453)	(28,845)	(16,960)
Limited partners' interest in net income (loss)	[4]	$ 281,772	$ 270,843	$ 1,211,113	$ 716,902
Net income (loss) per common unit - basic	[4]	$ 0.74	$ 0.71	$ 3.18	$ 1.87
Net income (loss) per common unit - diluted	[4]	$ 0.74	$ 0.70	$ 3.17	$ 1.86
Weighted-average common units outstanding - basic	[4]	380,513	383,561	380,343	384,211
Weighted-average common units outstanding - diluted	[4]	382,620	384,772	382,189	385,344
Service Revenues - Fee Based [Member]
Revenues and other
Revenues and other		$ 814,319	$ 695,547	$ 2,389,366	$ 2,004,920
Service Revenues - Product Based [Member]
Revenues and other
Revenues and other		49,115	48,446	177,321	142,212
Product Sales [Member]
Revenues and other
Revenues and other		19,673	31,652	109,076	100,336
Other [Member]
Revenues and other
Revenues and other		$ 255	$ 368	$ 957	$ 800

[1] Total revenues and other includes related-party amounts of $545.2 million and $1.6 billion for the three and nine months ended September 30, 2024, respectively, and $463.6 million and $1.4 billion for the three and nine months ended September 30, 2023, respectively. See Note 6 . See Note 8 . Total operating expenses includes related-party amounts of $(12.1) million and $(37.7) million for the three and nine months ended September 30, 2024, respectively, and $(35.8) million and $(53.0) million for the three and nine months ended September 30, 2023, respectively, all primarily related to changes in imbalance positions. See Note 6 . See Note 5.

Consolidated Statements of Op_2

Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Total revenues and other	[1]	$ 883,362	$ 776,013	$ 2,676,720	$ 2,248,268
Total operating expenses	[2]	511,940	449,265	1,515,384	1,373,793
Related Parties [Member]
Total revenues and other		545,207	463,623	1,579,107	1,353,991
Total operating expenses		$ (12,070)	$ (35,826)	$ (37,721)	$ (53,023)

[1] Total revenues and other includes related-party amounts of $545.2 million and $1.6 billion for the three and nine months ended September 30, 2024, respectively, and $463.6 million and $1.4 billion for the three and nine months ended September 30, 2023, respectively. See Note 6 . Total operating expenses includes related-party amounts of $(12.1) million and $(37.7) million for the three and nine months ended September 30, 2024, respectively, and $(35.8) million and $(53.0) million for the three and nine months ended September 30, 2023, respectively, all primarily related to changes in imbalance positions. See Note 6 .

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands		Sep. 30, 2024	Dec. 31, 2023
Current assets
Cash and cash equivalents		$ 1,124,737	$ 272,787
Accounts receivable, net		671,635	666,637
Other current assets		36,316	52,986
Total current assets		1,832,688	992,410
Property, plant, and equipment
Cost		15,342,193	14,945,431
Less accumulated depreciation		5,646,602	5,290,415
Net property, plant, and equipment		9,695,591	9,655,016
Goodwill		4,783	4,783
Other intangible assets		657,657	681,408
Equity investments		535,172	904,535
Other assets	[1]	255,333	233,455
Total assets	[2]	12,981,224	12,471,607
Current liabilities
Accounts and imbalance payables		387,158	362,451
Short-term debt		1,008,018	617,748
Accrued ad valorem taxes		47,298	61,285
Accrued liabilities		203,721	262,572
Total current liabilities		1,646,195	1,304,056
Long-term liabilities
Long-term debt		6,929,212	7,283,556
Deferred income taxes		29,646	15,468
Asset retirement obligations		374,646	359,185
Other liabilities		624,008	480,212
Total long-term liabilities		7,957,512	8,138,421
Total liabilities	[3]	9,603,707	9,442,477
Equity and partners' capital
Common units (380,555,427 and 379,519,983 units issued and outstanding at September 30, 2024, and December 31, 2023, respectively)		3,225,855	2,894,231
General partner units (9,060,641 units issued and outstanding at September 30, 2024, and December 31, 2023)		10,972	3,193
Total partners' capital		3,236,827	2,897,424
Noncontrolling interests		140,690	131,706
Total equity and partners' capital		3,377,517	3,029,130
Total liabilities, equity, and partners' capital		$ 12,981,224	$ 12,471,607
Common units issued		380,555,427	379,519,983
Common units outstanding		380,555,427	379,519,983
General partner units issued		9,060,641	9,060,641
General partner units outstanding		9,060,641	9,060,641

[1] Other assets includes $3.9 million and $5.7 million of NGLs line - fill inventory as of September 30, 2024, and December 31, 2023, respectively. Other assets also includes $128.9 million and $96.3 million of materials and supplies inventory as of September 30, 2024, and December 31, 2023, respectively. Total assets includes related - party amounts of $972.9 million and $1.3 billion as of September 30, 2024, and December 31, 2023, respectively, which includes related - party Accounts receivable, net of $393.7 million and $358.1 million as of September 30, 2024, and December 31, 2023, respectively. See Note 6 . Total liabilities includes related - party amounts of $534.5 million and $378.8 million as of September 30, 2024, and December 31, 2023, respectively. See Note 6 .

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands		Sep. 30, 2024	Dec. 31, 2023
Materials and supplies inventory		$ 128,900	$ 96,300
Total assets	[1]	12,981,224	12,471,607
Accounts receivable, net		671,635	666,637
Total liabilities	[2]	9,603,707	9,442,477
Related Parties [Member]
Total assets		972,923	1,307,152
Accounts receivable, net		393,740	358,141
Total liabilities		534,518	378,840
Natural-Gas Liquids [Member]
NGLs line-fill inventory		$ 3,900	$ 5,700

[1] Total assets includes related - party amounts of $972.9 million and $1.3 billion as of September 30, 2024, and December 31, 2023, respectively, which includes related - party Accounts receivable, net of $393.7 million and $358.1 million as of September 30, 2024, and December 31, 2023, respectively. See Note 6 . Total liabilities includes related - party amounts of $534.5 million and $378.8 million as of September 30, 2024, and December 31, 2023, respectively. See Note 6 .

Consolidated Statements of Equi

Consolidated Statements of Equity and Partners' Capital - USD ($) $ in Thousands		Total	Chipeta [Member]	WES Operating [Member]	Common Units [Member]	General Partner [Member]	Noncontrolling Interests [Member]	Noncontrolling Interests [Member] Chipeta [Member]	Noncontrolling Interests [Member] WES Operating [Member]
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
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)		752,255
Balance at Sep. 30, 2023		2,955,092			2,821,958	1,678	131,456
Balance at Mar. 31, 2023		3,101,564			2,964,712	2,261	134,591
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)		259,516			247,100	5,821	6,595
Distributions to noncontrolling interest owners			(1,230)	(6,860)				(1,230)	(6,860)
Distributions to Partnership unitholders		(336,987)			(329,227)	(7,760)
Unit repurchases	[1]	(41)			(41)
Equity-based compensation expense		7,665			7,665
Other		(1,464)			(1,464)
Balance at Jun. 30, 2023		3,022,163			2,888,745	322	133,096
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)		284,398			270,843	6,453	7,102
Distributions to noncontrolling interest owners			(1,613)	(7,129)				(1,613)	(7,129)
Distributions to Partnership unitholders		(221,442)			(216,345)	(5,097)
Unit repurchases	[1]	(127,500)			(127,500)
Equity-based compensation expense		7,171			7,171
Other		(956)			(956)
Balance at Sep. 30, 2023		2,955,092			2,821,958	1,678	131,456
Balance at Dec. 31, 2023		3,029,130			2,894,231	3,193	131,706
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)		586,216			559,500	13,330	13,386
Distributions to noncontrolling interest owners			(1,085)	(4,591)				(1,085)	(4,591)
Distributions to Partnership unitholders		(223,438)			(218,228)	(5,210)
Equity-based compensation expense		9,423			9,423
Other		(19,364)			(19,364)
Balance at Mar. 31, 2024		3,376,291			3,225,562	11,313	139,416
Balance at Dec. 31, 2023		3,029,130			2,894,231	3,193	131,706
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)		1,269,672
Balance at Sep. 30, 2024		3,377,517			3,225,855	10,972	140,690
Balance at Mar. 31, 2024		3,376,291			3,225,562	11,313	139,416
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)		387,564			369,841	8,807	8,916
Distributions to noncontrolling interest owners			(593)	(6,955)				(593)	(6,955)
Distributions to Partnership unitholders		(340,858)			(332,930)	(7,928)
Equity-based compensation expense		10,391			10,391
Other		(1,831)			(1,831)
Balance at Jun. 30, 2024		3,424,009			3,271,033	12,192	140,784
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)		295,892			281,772	6,708	7,412
Distributions to noncontrolling interest owners			$ (550)	$ (6,956)				$ (550)	$ (6,956)
Distributions to Partnership unitholders		(340,859)			(332,931)	(7,928)
Equity-based compensation expense		8,759			8,759
Other		(2,778)			(2,778)
Balance at Sep. 30, 2024		$ 3,377,517			$ 3,225,855	$ 10,972	$ 140,690

[1] See Note 5 .

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023
Cash flows from operating activities
Net income (loss)		$ 1,269,672	$ 752,255
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization		487,438	435,481
Long-lived asset and other impairments	[1]	6,204	52,880
Non-cash equity-based compensation expense		28,573	22,035
Deferred income taxes		14,178	954
Accretion and amortization of long-term obligations, net		6,884	5,977
Equity income, net – related parties		(84,227)	(116,839)
Distributions from equity-investment earnings – related parties		83,091	115,897
(Gain) loss on divestiture and other, net		(299,426)	3,668
(Gain) loss on early extinguishment of debt		(5,403)	(15,378)
Other		239	371
Changes in assets and liabilities:
(Increase) decrease in accounts receivable, net		(12,595)	(60,573)
Increase (decrease) in accounts and imbalance payables and accrued liabilities, net		(78,884)	(87,040)
Change in other items, net		166,670	78,346
Net cash provided by operating activities		1,582,414	1,188,034
Cash flows from investing activities
Capital expenditures		(595,087)	(536,427)
Contributions to equity investments – related parties		0	(1,153)
Distributions from equity investments in excess of cumulative earnings – related parties		27,560	31,715
(Increase) decrease in materials and supplies inventory and other		(33,118)	(32,659)
Net cash provided by (used in) investing activities		191,153	(538,584)
Cash flows from financing activities
Borrowings, net of debt issuance costs		789,193	1,801,011
Repayments of debt		(143,852)	(1,317,928)
Commercial paper borrowings (repayments), net		(610,312)	0
Increase (decrease) in outstanding checks		(2,282)	(241)
Distributions to Partnership unitholders	[2]	(905,155)	(754,998)
Unit repurchases	[2]	0	(134,602)
Other		(28,479)	(16,511)
Net cash provided by (used in) financing activities		(921,617)	(446,612)
Net increase (decrease) in cash and cash equivalents		851,950	202,838
Cash and cash equivalents at beginning of period		272,787	286,656
Cash and cash equivalents at end of period		1,124,737	489,494
Supplemental disclosures
Interest paid, net of capitalized interest		307,049	278,283
Income taxes paid (reimbursements received)		0	1,271
Accrued capital expenditures		128,508	112,150
Chipeta [Member]
Cash flows from financing activities
Distributions to Chipeta noncontrolling interest owner		(2,228)	(5,083)
WES Operating [Member]
Cash flows from financing activities
Distributions to noncontrolling interest owner of WES Operating		(18,502)	(18,260)
Third Parties [Member]
Cash flows from investing activities
Acquisitions from third parties		(443)	0
Proceeds from the sale of assets		$ 792,241	$ (60)

[1] See Note 8 . Includes related-party amounts. See Note 6 .

Consolidated Statements of Op_3

Consolidated Statements of Operations - WES Operating - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenues and other
Revenues and other	[1]	$ 883,362	$ 776,013	$ 2,676,720	$ 2,248,268
Equity income, net – related parties		23,977	35,494	84,227	116,839
Operating expenses
Cost of product		32,847	27,590	132,936	123,795
Operation and maintenance		231,066	204,434	649,324	562,104
General and administrative		64,726	55,050	195,498	159,572
Property and other taxes		12,635	14,583	43,984	39,961
Depreciation and amortization		166,015	147,363	487,438	435,481
Long-lived asset and other impairments	[2]	4,651	245	6,204	52,880
Total operating expenses	[3]	511,940	449,265	1,515,384	1,373,793
Gain (loss) on divestiture and other, net		467	(1,480)	299,426	(3,668)
Operating income (loss)		395,866	360,762	1,544,989	987,646
Interest expense		(94,149)	(82,754)	(279,177)	(250,606)
Gain (loss) on early extinguishment of debt		0	8,565	5,403	15,378
Other income (expense), net		9,565	(1,270)	16,124	2,817
Income (loss) before income taxes		311,282	285,303	1,287,339	755,235
Income tax expense (benefit)		15,390	905	17,667	2,980
Net income (loss)		295,892	284,398	1,269,672	752,255
Net income (loss) attributable to noncontrolling interest		7,412	7,102	29,714	18,393
Net income (loss) attributable to Western Midstream Operating, LP		288,480	277,296	1,239,958	733,862
Service Revenues - Fee Based [Member]
Revenues and other
Revenues and other		814,319	695,547	2,389,366	2,004,920
Service Revenues - Product Based [Member]
Revenues and other
Revenues and other		49,115	48,446	177,321	142,212
Product Sales [Member]
Revenues and other
Revenues and other		19,673	31,652	109,076	100,336
Other [Member]
Revenues and other
Revenues and other		255	368	957	800
WES Operating [Member]
Revenues and other
Revenues and other	[4]	883,362	776,013	2,676,720	2,248,268
Equity income, net – related parties		23,977	35,494	84,227	116,839
Operating expenses
Cost of product		32,847	27,590	132,936	123,795
Operation and maintenance		231,066	204,434	649,324	562,104
General and administrative		64,017	54,541	193,497	157,645
Property and other taxes		12,635	14,583	43,984	39,961
Depreciation and amortization		166,015	147,363	487,438	435,481
Long-lived asset and other impairments	[5]	4,651	245	6,204	52,880
Total operating expenses	[6]	511,231	448,756	1,513,383	1,371,866
Gain (loss) on divestiture and other, net		467	(1,480)	299,426	(3,668)
Operating income (loss)		396,575	361,271	1,546,990	989,573
Interest expense		(94,149)	(82,754)	(279,177)	(250,606)
Gain (loss) on early extinguishment of debt		0	8,565	5,403	15,378
Other income (expense), net		9,498	(1,330)	15,930	2,603
Income (loss) before income taxes		311,924	285,752	1,289,146	756,948
Income tax expense (benefit)		15,390	905	17,667	2,980
Net income (loss)		296,534	284,847	1,271,479	753,968
Net income (loss) attributable to noncontrolling interest		1,509	1,432	4,364	3,377
Net income (loss) attributable to Western Midstream Operating, LP		295,025	283,415	1,267,115	750,591
WES Operating [Member] \| Service Revenues - Fee Based [Member]
Revenues and other
Revenues and other		814,319	695,547	2,389,366	2,004,920
WES Operating [Member] \| Service Revenues - Product Based [Member]
Revenues and other
Revenues and other		49,115	48,446	177,321	142,212
WES Operating [Member] \| Product Sales [Member]
Revenues and other
Revenues and other		19,673	31,652	109,076	100,336
WES Operating [Member] \| Other [Member]
Revenues and other
Revenues and other		$ 255	$ 368	$ 957	$ 800

[1] Total revenues and other includes related-party amounts of $545.2 million and $1.6 billion for the three and nine months ended September 30, 2024, respectively, and $463.6 million and $1.4 billion for the three and nine months ended September 30, 2023, respectively. See Note 6 . See Note 8 . Total operating expenses includes related-party amounts of $(12.1) million and $(37.7) million for the three and nine months ended September 30, 2024, respectively, and $(35.8) million and $(53.0) million for the three and nine months ended September 30, 2023, respectively, all primarily related to changes in imbalance positions. See Note 6 . Total revenues and other includes related-party amounts of $545.2 million and $1.6 billion for the three and nine months ended September 30, 2024, respectively, and $463.6 million and $1.4 billion for the three and nine months ended September 30, 2023, respectively. See Note 6 . See Note 8 . Total operating expenses includes related-party amounts of $(11.2) million and $(34.7) million for the three and nine months ended September 30, 2024, respectively, and $(35.1) million and $(50.5) million for the three and nine months ended September 30, 2023, respectively, all primarily related to changes in imbalance positions. See Note 6 .

Consolidated Statements of Op_4

Consolidated Statements of Operations - WES Operating (Parenthetical) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Total revenues and other	[1]	$ 883,362	$ 776,013	$ 2,676,720	$ 2,248,268
Total operating expenses	[2]	511,940	449,265	1,515,384	1,373,793
Related Parties [Member]
Total revenues and other		545,207	463,623	1,579,107	1,353,991
Total operating expenses		(12,070)	(35,826)	(37,721)	(53,023)
WES Operating [Member]
Total revenues and other	[3]	883,362	776,013	2,676,720	2,248,268
Total operating expenses	[4]	511,231	448,756	1,513,383	1,371,866
WES Operating [Member] \| Related Parties [Member]
Total revenues and other		545,200	463,600	1,600,000	1,400,000
Total operating expenses		$ (11,200)	$ (35,100)	$ (34,700)	$ (50,500)

[1] Total revenues and other includes related-party amounts of $545.2 million and $1.6 billion for the three and nine months ended September 30, 2024, respectively, and $463.6 million and $1.4 billion for the three and nine months ended September 30, 2023, respectively. See Note 6 . Total operating expenses includes related-party amounts of $(12.1) million and $(37.7) million for the three and nine months ended September 30, 2024, respectively, and $(35.8) million and $(53.0) million for the three and nine months ended September 30, 2023, respectively, all primarily related to changes in imbalance positions. See Note 6 . Total revenues and other includes related-party amounts of $545.2 million and $1.6 billion for the three and nine months ended September 30, 2024, respectively, and $463.6 million and $1.4 billion for the three and nine months ended September 30, 2023, respectively. See Note 6 . Total operating expenses includes related-party amounts of $(11.2) million and $(34.7) million for the three and nine months ended September 30, 2024, respectively, and $(35.1) million and $(50.5) million for the three and nine months ended September 30, 2023, respectively, all primarily related to changes in imbalance positions. See Note 6 .

Consolidated Balance Sheets - W

Consolidated Balance Sheets - WES Operating - USD ($) $ in Thousands		Sep. 30, 2024	Dec. 31, 2023
Current assets
Cash and cash equivalents		$ 1,124,737	$ 272,787
Accounts receivable, net		671,635	666,637
Other current assets		36,316	52,986
Total current assets		1,832,688	992,410
Property, plant, and equipment
Cost		15,342,193	14,945,431
Less accumulated depreciation		5,646,602	5,290,415
Net property, plant, and equipment		9,695,591	9,655,016
Goodwill		4,783	4,783
Other intangible assets		657,657	681,408
Equity investments		535,172	904,535
Other assets	[1]	255,333	233,455
Total assets	[2]	12,981,224	12,471,607
Current liabilities
Accounts and imbalance payables		387,158	362,451
Short-term debt		1,008,018	617,748
Accrued ad valorem taxes		47,298	61,285
Accrued liabilities		203,721	262,572
Total current liabilities		1,646,195	1,304,056
Long-term liabilities
Long-term debt		6,929,212	7,283,556
Deferred income taxes		29,646	15,468
Asset retirement obligations		374,646	359,185
Other liabilities		624,008	480,212
Total long-term liabilities		7,957,512	8,138,421
Total liabilities	[3]	9,603,707	9,442,477
Equity and partners' capital
Common units (318,675,578 units issued and outstanding at September 30, 2024, and December 31, 2023)		3,225,855	2,894,231
Total partners' capital		3,236,827	2,897,424
Noncontrolling interest		140,690	131,706
Total equity and partners' capital		3,377,517	3,029,130
Total liabilities, equity, and partners' capital		$ 12,981,224	$ 12,471,607
Common units issued		380,555,427	379,519,983
Common units outstanding		380,555,427	379,519,983
WES Operating [Member]
Current assets
Cash and cash equivalents		$ 1,117,848	$ 268,184
Accounts receivable, net		674,798	666,615
Other current assets		35,477	50,468
Total current assets		1,828,123	985,267
Property, plant, and equipment
Cost		15,342,193	14,945,431
Less accumulated depreciation		5,646,602	5,290,415
Net property, plant, and equipment		9,695,591	9,655,016
Goodwill		4,783	4,783
Other intangible assets		657,657	681,408
Equity investments		535,172	904,535
Other assets	[4]	252,078	231,644
Total assets	[5]	12,973,404	12,462,653
Current liabilities
Accounts and imbalance payables		387,135	392,752
Short-term debt		1,008,018	617,748
Accrued ad valorem taxes		47,298	61,285
Accrued liabilities		151,750	203,461
Total current liabilities		1,594,201	1,275,246
Long-term liabilities
Long-term debt		6,929,212	7,283,556
Deferred income taxes		29,646	15,468
Asset retirement obligations		374,646	359,185
Other liabilities		620,752	476,844
Total long-term liabilities		7,954,256	8,135,053
Total liabilities	[6]	9,548,457	9,410,299
Equity and partners' capital
Common units (318,675,578 units issued and outstanding at September 30, 2024, and December 31, 2023)		3,397,488	3,027,031
Total partners' capital		3,397,488	3,027,031
Noncontrolling interest		27,459	25,323
Total equity and partners' capital		3,424,947	3,052,354
Total liabilities, equity, and partners' capital		$ 12,973,404	$ 12,462,653
Common units issued		318,675,578	318,675,578
Common units outstanding		318,675,578	318,675,578

[1] Other assets includes $3.9 million and $5.7 million of NGLs line - fill inventory as of September 30, 2024, and December 31, 2023, respectively. Other assets also includes $128.9 million and $96.3 million of materials and supplies inventory as of September 30, 2024, and December 31, 2023, respectively. Total assets includes related - party amounts of $972.9 million and $1.3 billion as of September 30, 2024, and December 31, 2023, respectively, which includes related - party Accounts receivable, net of $393.7 million and $358.1 million as of September 30, 2024, and December 31, 2023, respectively. See Note 6 . Total liabilities includes related - party amounts of $534.5 million and $378.8 million as of September 30, 2024, and December 31, 2023, respectively. See Note 6 . Other assets includes $3.9 million and $5.7 million of NGLs line - fill inventory as of September 30, 2024, and December 31, 2023, respectively. Other assets also includes $128.9 million and $96.3 million of materials and supplies inventory as of September 30, 2024, and December 31, 2023, respectively. Total assets includes related - party amounts of $972.5 million and $1.3 billion as of September 30, 2024, and December 31, 2023, respectively, which includes related - party Accounts receivable, net of $396.9 million and $358.1 million as of September 30, 2024, and December 31, 2023, respectively. See Note 6 . Total liabilities includes related - party amounts of $534.2 million and $409.5 million as of September 30, 2024, and December 31, 2023, respectively. See Note 6 .

Consolidated Balance Sheets -_2

Consolidated Balance Sheets - WES Operating (Parenthetical) - USD ($) $ in Thousands		Sep. 30, 2024	Dec. 31, 2023
Materials and supplies inventory		$ 128,900	$ 96,300
Total assets	[1]	12,981,224	12,471,607
Accounts receivable, net		671,635	666,637
Total liabilities	[2]	9,603,707	9,442,477
Related Parties [Member]
Total assets		972,923	1,307,152
Accounts receivable, net		393,740	358,141
Total liabilities		534,518	378,840
Natural-Gas Liquids [Member]
NGLs line-fill inventory		3,900	5,700
WES Operating [Member]
Materials and supplies inventory		128,900	96,300
Total assets	[3]	12,973,404	12,462,653
Accounts receivable, net		674,798	666,615
Total liabilities	[4]	9,548,457	9,410,299
WES Operating [Member] \| Related Parties [Member]
Total assets		972,500	1,300,000
Accounts receivable, net		396,943	358,141
Total liabilities		534,200	409,500
WES Operating [Member] \| Natural-Gas Liquids [Member]
NGLs line-fill inventory		$ 3,900	$ 5,700

[1] Total assets includes related - party amounts of $972.9 million and $1.3 billion as of September 30, 2024, and December 31, 2023, respectively, which includes related - party Accounts receivable, net of $393.7 million and $358.1 million as of September 30, 2024, and December 31, 2023, respectively. See Note 6 . Total liabilities includes related - party amounts of $534.5 million and $378.8 million as of September 30, 2024, and December 31, 2023, respectively. See Note 6 . Total assets includes related - party amounts of $972.5 million and $1.3 billion as of September 30, 2024, and December 31, 2023, respectively, which includes related - party Accounts receivable, net of $396.9 million and $358.1 million as of September 30, 2024, and December 31, 2023, respectively. See Note 6 . Total liabilities includes related - party amounts of $534.2 million and $409.5 million as of September 30, 2024, and December 31, 2023, respectively. See Note 6 .

Consolidated Statements of Eq_2

Consolidated Statements of Equity and Partners' Capital - WES Operating - USD ($) $ in Thousands	Total	Chipeta [Member]	Common Units [Member]	Noncontrolling Interest [Member]	Noncontrolling Interest [Member] Chipeta [Member]	WES Operating [Member]	WES Operating [Member] WES [Member]	WES Operating [Member] Chipeta [Member]	WES Operating [Member] Common Units [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, 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
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)	752,255					753,968
Balance at Sep. 30, 2023	2,955,092		2,821,958	131,456		2,977,823			2,951,434		26,389
Balance at Mar. 31, 2023	3,101,564		2,964,712	134,591		3,119,960			3,093,570		26,390
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)	259,516		247,100	6,595		260,573			259,163		1,410
Distributions to noncontrolling interest owners		(1,230)			(1,230)			(1,230)				(1,230)
Distributions to WES Operating unitholders	(336,987)		(329,227)			(342,895)			(342,895)
Contributions of equity-based compensation from related parties							7,519			7,519
Balance at Jun. 30, 2023	3,022,163		2,888,745	133,096		3,043,927			3,017,357		26,570
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)	284,398		270,843	7,102		284,847			283,415		1,432
Distributions to noncontrolling interest owners		(1,613)			(1,613)			(1,613)				(1,613)
Distributions to WES Operating unitholders	(221,442)		(216,345)			(356,362)			(356,362)
Contributions of equity-based compensation from related parties							7,024			7,024
Balance at Sep. 30, 2023	2,955,092		2,821,958	131,456		2,977,823			2,951,434		26,389
Balance at Dec. 31, 2023	3,029,130		2,894,231	131,706		3,052,354			3,027,031		25,323
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)	586,216		559,500	13,386		586,517			584,831		1,686
Distributions to noncontrolling interest owners		(1,085)			(1,085)			(1,085)				(1,085)
Distributions to WES Operating unitholders	(223,438)		(218,228)			(229,446)			(229,446)
Contributions of equity-based compensation from related parties							9,278			9,278
Balance at Mar. 31, 2024	3,376,291		3,225,562	139,416		3,417,618			3,391,694		25,924
Balance at Dec. 31, 2023	3,029,130		2,894,231	131,706		3,052,354			3,027,031		25,323
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)	1,269,672					1,271,479
Balance at Sep. 30, 2024	3,377,517		3,225,855	140,690		3,424,947			3,397,488		27,459
Balance at Mar. 31, 2024	3,376,291		3,225,562	139,416		3,417,618			3,391,694		25,924
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)	387,564		369,841	8,916		388,428			387,259		1,169
Distributions to noncontrolling interest owners		(593)			(593)			(593)				(593)
Distributions to WES Operating unitholders	(340,858)		(332,930)			(347,675)			(347,675)
Contributions of equity-based compensation from related parties							10,247			10,247
Balance at Jun. 30, 2024	3,424,009		3,271,033	140,784		3,468,025			3,441,525		26,500
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)	295,892		281,772	7,412		296,534			295,025		1,509
Distributions to noncontrolling interest owners		$ (550)			$ (550)			$ (550)				$ (550)
Distributions to WES Operating unitholders	(340,859)		(332,931)			(347,675)			(347,675)
Contributions of equity-based compensation from related parties							$ 8,613			$ 8,613
Balance at Sep. 30, 2024	$ 3,377,517		$ 3,225,855	$ 140,690		$ 3,424,947			$ 3,397,488		$ 27,459

Consolidated Statements of Ca_2

Consolidated Statements of Cash Flows - WES Operating - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023
Cash flows from operating activities
Net income (loss)		$ 1,269,672	$ 752,255
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization		487,438	435,481
Long-lived asset and other impairments	[1]	6,204	52,880
Non-cash equity-based compensation expense		28,573	22,035
Deferred income taxes		14,178	954
Accretion and amortization of long-term obligations, net		6,884	5,977
Equity income, net – related parties		(84,227)	(116,839)
Distributions from equity-investment earnings – related parties		83,091	115,897
(Gain) loss on divestiture and other, net		(299,426)	3,668
(Gain) loss on early extinguishment of debt		(5,403)	(15,378)
Other		239	371
Changes in assets and liabilities:
(Increase) decrease in accounts receivable, net		(12,595)	(60,573)
Increase (decrease) in accounts and imbalance payables and accrued liabilities, net		(78,884)	(87,040)
Change in other items, net		166,670	78,346
Net cash provided by operating activities		1,582,414	1,188,034
Cash flows from investing activities
Capital expenditures		(595,087)	(536,427)
Contributions to equity investments – related parties		0	(1,153)
Distributions from equity investments in excess of cumulative earnings – related parties		27,560	31,715
(Increase) decrease in materials and supplies inventory and other		(33,118)	(32,659)
Net cash provided by (used in) investing activities		191,153	(538,584)
Cash flows from financing activities
Borrowings, net of debt issuance costs		789,193	1,801,011
Repayments of debt		(143,852)	(1,317,928)
Commercial paper borrowings (repayments), net		(610,312)	0
Increase (decrease) in outstanding checks		(2,282)	(241)
Distributions to WES Operating unitholders	[2]	(905,155)	(754,998)
Other		(28,479)	(16,511)
Net cash provided by (used in) financing activities		(921,617)	(446,612)
Net increase (decrease) in cash and cash equivalents		851,950	202,838
Cash and cash equivalents at beginning of period		272,787	286,656
Cash and cash equivalents at end of period		1,124,737	489,494
Supplemental disclosures
Interest paid, net of capitalized interest		307,049	278,283
Income taxes paid (reimbursements received)		0	1,271
Accrued capital expenditures		128,508	112,150
Chipeta [Member]
Cash flows from financing activities
Distributions to Chipeta noncontrolling interest owner		(2,228)	(5,083)
Third Parties [Member]
Cash flows from investing activities
Acquisitions from third parties		(443)	0
Proceeds from the sale of assets		792,241	(60)
WES Operating [Member]
Cash flows from operating activities
Net income (loss)		1,271,479	753,968
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization		487,438	435,481
Long-lived asset and other impairments	[3]	6,204	52,880
Non-cash equity-based compensation expense		28,138	21,601
Deferred income taxes		14,178	954
Accretion and amortization of long-term obligations, net		6,884	5,977
Equity income, net – related parties		(84,227)	(116,839)
Distributions from equity-investment earnings – related parties		83,091	115,897
(Gain) loss on divestiture and other, net		(299,426)	3,668
(Gain) loss on early extinguishment of debt		(5,403)	(15,378)
Other		239	371
Changes in assets and liabilities:
(Increase) decrease in accounts receivable, net		(15,780)	(60,553)
Increase (decrease) in accounts and imbalance payables and accrued liabilities, net		(102,104)	(102,048)
Change in other items, net		166,545	78,111
Net cash provided by operating activities		1,557,256	1,174,090
Cash flows from investing activities
Capital expenditures		(595,087)	(536,427)
Contributions to equity investments – related parties		0	(1,153)
Distributions from equity investments in excess of cumulative earnings – related parties		27,560	31,715
(Increase) decrease in materials and supplies inventory and other		(33,118)	(32,659)
Net cash provided by (used in) investing activities		191,153	(538,584)
Cash flows from financing activities
Borrowings, net of debt issuance costs		789,193	1,801,011
Repayments of debt		(143,852)	(1,317,928)
Commercial paper borrowings (repayments), net		(610,312)	0
Increase (decrease) in outstanding checks		(2,245)	(244)
Distributions to WES Operating unitholders	[4]	(924,796)	(912,770)
Other		(4,505)	(2,140)
Net cash provided by (used in) financing activities		(898,745)	(437,154)
Net increase (decrease) in cash and cash equivalents		849,664	198,352
Cash and cash equivalents at beginning of period		268,184	286,101
Cash and cash equivalents at end of period		1,117,848	484,453
Supplemental disclosures
Interest paid, net of capitalized interest		307,049	278,283
Income taxes paid (reimbursements received)		0	1,271
Accrued capital expenditures		128,508	112,150
WES Operating [Member] \| Chipeta [Member]
Cash flows from financing activities
Distributions to Chipeta noncontrolling interest owner		(2,228)	(5,083)
WES Operating [Member] \| Third Parties [Member]
Cash flows from investing activities
Acquisitions from third parties		(443)	0
Proceeds from the sale of assets		$ 792,241	$ (60)

[1] See Note 8 . Includes related-party amounts. See Note 6 . See Note 8 . Includes related-party amounts. See Note 6.

Description of Business and Bas

Description of Business and Basis of Presentation	9 Months Ended
Description of Business and Basis of Presentation	Sep. 30, 2024
Accounting Policies [Abstract]
Description of Business and Basis of Presentation	1. DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION General. Western Midstream Partners, LP is a Delaware master limited partnership formed in September 2012. Western Midstream Operating, LP (together with its subsidiaries, “WES Operating”) is a Delaware limited partnership formed in 2007 to acquire, own, develop, and operate midstream assets. Western Midstream Partners, LP owns, directly and indirectly, a 98.0% limited partner interest in WES Operating, and directly owns all of the outstanding equity interests of Western Midstream Operating GP, LLC, which holds the entire non - economic general partner interest in WES Operating. For purposes of these consolidated financial statements, the “Partnership” refers to Western Midstream Partners, LP in its individual capacity or to Western Midstream Partners, LP and its subsidiaries, including Western Midstream Operating GP, LLC and WES Operating, as the context requires. “WES Operating GP” refers to Western Midstream Operating GP, LLC, individually as the general partner of WES Operating. The Partnership’s general partner, Western Midstream Holdings, LLC (the “general partner”), is a wholly owned subsidiary of Occidental Petroleum Corporation. “Occidental” refers to Occidental Petroleum Corporation, as the context requires, and its subsidiaries, excluding the general partner. “Anadarko” refers to Anadarko Petroleum Corporation and its subsidiaries, excluding Western Midstream Holdings, LLC. Anadarko became a wholly owned subsidiary of Occidental as a result of Occidental’s acquisition by merger of Anadarko on August 8, 2019. “Related parties” refers to Occidental (see Note 6 ), the Partnership’s investments accounted for under the equity method of accounting (see Note 7 ), and the Partnership and WES Operating for transactions that eliminate upon consolidation (see Note 6 ). The Partnership is engaged in the business of gathering, compressing, treating, processing, and transporting natural gas; gathering, stabilizing, and transporting condensate, natural - gas liquids (“NGLs”), and crude oil; and gathering and disposing of produced water. In its capacity as a natural - gas processor, the Partnership also buys and sells natural gas, NGLs, and condensate on behalf of itself and its customers under certain contracts. As of September 30, 2024, the Partnership’s assets and investments consisted of the following: Wholly Operated Equity Gathering systems (1) 18 2 1 Treating facilities 39 3 — Natural - gas processing plants/trains 26 3 1 NGLs pipelines 3 — 4 Natural - gas pipelines 6 — 1 Crude - oil pipelines 2 1 1 _________________________________________________________________________________________ (1) Includes the DBM water systems. These assets and investments are located in Texas, New Mexico, and the Rocky Mountains (Colorado, Utah, and Wyoming). 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 7) : Percentage Interest Full consolidation Chipeta (1) 75.00 % Proportionate consolidation (2) Springfield system 50.10 % 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 % Rendezvous Gas Services, LLC (“Rendezvous”) 22.00 % Texas Express Pipeline LLC (“TEP”) 20.00 % Texas Express Gathering LLC (“TEG”) 20.00 % 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 this asset. (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 2023 Form 10-K, as filed with the SEC on February 21, 2024. 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 September 30, 2024 (see Note 7 ). The Partnership also owns and controls the entire non - economic general partner interest in WES Operating GP, and the Partnership’s general partner is owned by Occidental. Use of estimates. In preparing financial statements in accordance with GAAP, management makes informed judgments and estimates that affect the reported amounts of assets, liabilities, revenues, and expenses. Management evaluates its estimates and related assumptions regularly, using historical experience and other reasonable methods. Changes in facts and circumstances or additional information may result in revised estimates, and actual results may differ from these estimates. Effects on the business, financial condition, and results of operations resulting from revisions to estimates are recognized when the facts that give rise to the revisions become known. The information included herein reflects all normal recurring adjustments which are, in the opinion of management, necessary for a fair presentation of the consolidated financial statements. 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 5. Segments. The Partnership’s operations continue to be organized into a single operating segment, the assets of which gather, compress, treat, process, and transport natural gas; gather, stabilize, and transport condensate, NGLs, and crude oil; and gather and dispose of produced water in the United States. In November 2023, the Financial Accounting Standards Board issued Accounting Standards Update 2023-07, “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures.” The standard improves reportable segment disclosure requirements for public business entities primarily through enhanced disclosures about significant segment expenses that are regularly provided to the chief operating decision maker and included within each reported measure of segment profit (referred to as the “significant expense principle”). The standard will become effective for the Partnership for the fiscal year 2024 annual financial statements and interim financial statements thereafter and will be applied retrospectively for all prior periods presented in the financial statements, with early adoption permitted. The Partnership plans to adopt the standard when it becomes effective beginning with the fiscal year 2024 annual financial statements. The Partnership is currently evaluating the impact this guidance will have on disclosures in the Notes to Consolidated Financial Statements. This standard will have no impact on the Partnership’s financial statements, but will result in additional disclosure. Equity-based compensation. During the nine months ended September 30, 2024 and 2023, the Partnership issued 1,035,444 and 832,707 common units, respectively, under its long-term incentive plans. Compensation expense was $8.8 million and $28.6 million for the three and nine months ended September 30, 2024, respectively, and $7.2 million and $22.0 million for the three and nine months ended September 30, 2023, respectively.

Revenue from Contracts with Cus

Revenue from Contracts with Customers	9 Months Ended
Revenue from Contracts with Customers	Sep. 30, 2024
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 Nine Months Ended thousands 2024 2023 2024 2023 Revenue from customers Service revenues – fee based $ 814,319 $ 695,547 $ 2,389,366 $ 2,004,920 Service revenues – product based 49,115 48,446 177,321 142,212 Product sales 19,673 31,652 109,076 100,336 Total revenue from customers 883,107 775,645 2,675,763 2,247,468 Revenue from other than customers Other 255 368 957 800 Total revenues and other $ 883,362 $ 776,013 $ 2,676,720 $ 2,248,268 Contract balances. Receivables from customers, which are included in Accounts receivable, net on the consolidated balance sheets were $664.0 million and $661.6 million as of September 30, 2024, and December 31, 2023, 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, 2023 $ 39,292 Amounts transferred to Accounts receivable, net that were included in the contract assets balance at the beginning of the period (1) (5,683) Additional estimated revenues recognized (2) 5,567 Contract assets balance at September 30, 2024 $ 39,176 Contract assets at September 30, 2024 Other current assets $ 11,931 Other assets 27,245 Total contract assets from contracts with customers $ 39,176 _________________________________________________________________________________________ (1) Includes $(1.8) million for the three months ended September 30, 2024. (2) Includes $1.8 million for the three months ended September 30, 2024. 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, 2023 $ 445,499 Cash received or receivable, excluding revenues recognized during the period (1) 158,282 Revenues recognized that were included in the contract liability balance at the beginning of the period (2) (22,388) Contract liabilities balance at September 30, 2024 $ 581,393 Contract liabilities at September 30, 2024 Accrued liabilities $ 10,076 Other liabilities 571,317 Total contract liabilities from contracts with customers $ 581,393 _________________________________________________________________________________________ (1) Includes $34.7 million for the three months ended September 30, 2024. (2) Includes $(6.5) million for the three months ended September 30, 2024. Transaction price allocated to remaining performance obligations. Revenues expected to be recognized from certain performance obligations that are unsatisfied (or partially unsatisfied) as of September 30, 2024, are presented in the table below. 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 2024 $ 296,754 2025 1,111,497 2026 1,049,918 2027 949,426 2028 773,160 Thereafter 2,076,819 Total $ 6,257,574

Acquisitions and Divestitures

Acquisitions and Divestitures	9 Months Ended
Acquisitions and Divestitures	Sep. 30, 2024
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]
Acquisitions and Divestitures	3. ACQUISITIONS AND DIVESTITURES Marcellus Interest systems. During the second quarter of 2024, the Partnership closed on the sale of its 33.75% interest in the Marcellus Interest systems for proceeds of $206.2 million, resulting in a net gain on sale of $63.9 million that was recorded as Gain (loss) on divestiture and other, net in the consolidated statement of operations. Mont Belvieu JV, Whitethorn LLC, Panola, and Saddlehorn. During the first quarter of 2024, the Partnership closed on the sale of the following equity investments to third parties: (i) the 25.00% interest in Enterprise EF78 LLC (the “Mont Belvieu JV”), (ii) the 20.00% interest in Whitethorn Pipeline Company LLC (“Whitethorn LLC”), (iii) the 15.00% interest in Panola Pipeline Company, LLC (“Panola”), and (iv) the 20.00% interest in Saddlehorn Pipeline Company, LLC (“Saddlehorn”). The combined proceeds received in the first quarter of 2024 of $588.6 million includes $5.9 million in pro-rata distributions through closing, resulting in a net gain on sale of $239.7 million that was recorded as Gain (loss) on divestiture and other, net in the consolidated statement of operations. Meritage. On October 13, 2023, the Partnership closed on the acquisition of Meritage Midstream Services II, LLC (“Meritage”) for $885.0 million (subject to certain customary post-closing adjustments) funded with cash, including proceeds from the Partnership’s $600.0 million senior note issuance in September 2023 (see Note 10) and borrowings on the senior unsecured revolving credit facility (“RCF”). The cash purchase price, adjusted for working capital and certain customary post-closing adjustments and reduced by the $38.4 million of cash acquired (as presented in the table below), was $878.2 million. The assets acquired, located in Converse, Campbell, and Johnson counties, Wyoming, include approximately 1,500 miles of high- and low-pressure natural-gas gathering pipelines, approximately 380 MMcf/d of natural-gas processing capacity, and the Thunder Creek NGL pipeline, which is a 120 mile, 38 MBbls/d FERC-regulated NGL pipeline that connects to the processing facility. The acquisition expands the Partnership’s existing Powder River Basin asset base, increasing total natural-gas processing capacity in that region to 440 MMcf/d. The Meritage acquisition has been accounted for under the acquisition method of accounting. The assets acquired and liabilities assumed in the Meritage acquisition were recorded in the consolidated balance sheet at their estimated fair values as of the acquisition date. Results of operations attributable to the Meritage acquisition were included in the Partnership’s consolidated statements of operations beginning on the acquisition date in the fourth quarter of 2023. 3. ACQUISITIONS AND DIVESTITURES The following is the final acquisition-date fair value for the assets acquired and liabilities assumed in the Meritage acquisition on October 13, 2023. thousands Assets acquired: Cash and cash equivalents $ 38,412 Accounts receivable, net 34,060 Other current assets 1,980 Property, plant, and equipment 926,347 Other assets 6,498 Total assets acquired 1,007,297 Liabilities assumed: Accounts payable and accrued liabilities 34,733 Other current liabilities 5,451 Asset retirement obligation 22,156 Other liabilities 28,356 Total liabilities assumed 90,696 Net assets acquired $ 916,601 The acquisition-date fair values are based on an assessment of the fair value of the assets acquired and liabilities assumed in the Meritage acquisition using inputs that are not observable in the market and thus represent Level 3 inputs. The fair values of the processing plants, gathering system, and related facilities and equipment are based on market and cost approaches.

Partnership Distributions

Partnership Distributions	9 Months Ended
Partnership Distributions	Sep. 30, 2024
Distributions Made to Members or Limited Partners [Abstract]
Partnership Distributions	4. PARTNERSHIP DISTRIBUTIONS Partnership distributions. Under its partnership agreement, the Partnership distributes all of its available cash 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. 4. PARTNERSHIP 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 2023 March 31 (1) $ 0.856 $ 336,987 May 15, 2023 May 1, 2023 June 30 0.5625 221,442 August 14, 2023 July 31, 2023 September 30 0.575 223,432 November 13, 2023 November 1, 2023 December 31 0.575 223,438 February 13, 2024 February 1, 2024 2024 March 31 $ 0.875 $ 340,858 May 15, 2024 May 1, 2024 June 30 0.875 340,859 August 14, 2024 August 1, 2024 September 30 0.875 340,914 November 14, 2024 November 1, 2024 _________________________________________________________________________________________ (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. 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, which was paid in conjunction with the regular first-quarter 2023 distribution on May 15, 2023. WES Operating partnership distributions. WES Operating makes quarterly cash distributions to the Partnership and WGR Asset Holding Company LLC (“WGRAH”), a subsidiary of Occidental, in proportion to their share of limited partner interests in WES Operating. See Note 5 . WES Operating made and/or declared the following cash distributions to its limited partners for the periods presented: thousands Quarters Ended Total Quarterly Distribution 2023 March 31 (1) $ 342,895 May 2023 June 30 226,260 August 2023 September 30 229,446 November 2023 December 31 229,446 February 2024 2024 March 31 $ 347,675 May 2024 June 30 347,675 August 2024 September 30 347,356 November 2024 _________________________________________________________________________________________ (1) Includes amounts related to the Enhanced Distribution discussed above.

Equity and Partners' Capital

Equity and Partners' Capital	9 Months Ended
Equity and Partners' Capital	Sep. 30, 2024
Partners' Capital Notes [Abstract]
Equity and Partners' Capital	5. EQUITY AND PARTNERS’ CAPITAL Holdings of Partnership equity. The Partnership’s common units are listed on the New York Stock Exchange under the ticker symbol “WES.” As of September 30, 2024, Occidental held 165,681,578 common units, representing a 42.5% 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 214,873,849 common units, representing a 55.2% limited partner interest in the Partnership. In August 2024, affiliates of Occidental sold 19,500,000 of the Partnership’s common units it held through an underwritten offering. The Partnership did not receive any proceeds from the public offering. 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 nine months ended September 30, 2024, there were no common units repurchased. During the nine months ended September 30, 2023, the Partnership repurchased 5,387,322 common units, which included 5,100,000 common units repurchased from Occidental, for an aggregate purchase price of $134.6 million. The units were canceled immediately upon receipt. As of September 30, 2024, the Partnership had an authorized amount of $627.8 million remaining under the program. Holdings of WES Operating equity. As of September 30, 2024, (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 Nine Months Ended thousands except per-unit amounts 2024 2023 2024 2023 Net income (loss) Limited partners’ interest in net income (loss) $ 281,772 $ 270,843 $ 1,211,113 $ 716,902 Weighted-average common units outstanding Basic 380,513 383,561 380,343 384,211 Dilutive effect of non-vested phantom units 2,107 1,211 1,846 1,133 Diluted 382,620 384,772 382,189 385,344 Excluded due to anti-dilutive effect — 143 2,054 123 Net income (loss) per common unit Basic $ 0.74 $ 0.71 $ 3.18 $ 1.87 Diluted $ 0.74 $ 0.70 $ 3.17 $ 1.86 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	9 Months Ended
Related-Party Transactions	Sep. 30, 2024
Related Party Fees and Other Arrangements, Limited Liability Company (LLC) or Limited Partnership (LP) [Abstract]
Related-Party Transactions	6. RELATED-PARTY TRANSACTIONS Summary of related-party transactions. The following tables summarize material related - party transactions included in the Partnership’s consolidated financial statements: Statements of operations Three Months Ended Nine Months Ended thousands 2024 2023 2024 2023 Revenues and other Service revenues – fee based $ 530,434 $ 454,039 $ 1,533,251 $ 1,300,870 Service revenues – product based 13,664 (234) 44,214 14,524 Product sales 1,109 9,818 1,642 38,597 Total revenues and other 545,207 463,623 1,579,107 1,353,991 Equity income, net – related parties (1) 23,977 35,494 84,227 116,839 Operating expenses Cost of product (2) (14,638) (37,083) (46,685) (56,214) Operation and maintenance 2,523 843 8,665 2,493 General and administrative 45 414 299 698 Total operating expenses (12,070) (35,826) (37,721) (53,023) _________________________________________________________________________________________ (1) See Note 7 . (2) Includes related-party natural - gas and NGLs imbalances. Balance sheets thousands September 30, December 31, Assets Accounts receivable, net $ 393,740 $ 358,141 Other current assets 3,140 1,260 Equity investments (1) 535,172 904,535 Other assets 40,871 43,216 Total assets 972,923 1,307,152 Liabilities Accounts and imbalance payables 57,414 38,541 Accrued liabilities 5,029 4,979 Other liabilities (2) 472,075 335,320 Total liabilities 534,518 378,840 _________________________________________________________________________________________ (1) See Note 7 . (2) Includes contract liabilities from contracts with customers. See Note 2 . 6. RELATED-PARTY TRANSACTIONS Statements of cash flows Nine Months Ended thousands 2024 2023 Distributions from equity - investment earnings – related parties $ 83,091 $ 115,897 Contributions to equity investments – related parties — (1,153) Distributions from equity investments in excess of cumulative earnings – related parties 27,560 31,715 Distributions to Partnership unitholders (1) (451,613) (382,438) Distributions to WES Operating unitholders (2) (18,502) (18,260) Unit repurchases from Occidental (3) — (127,500) _________________________________________________________________________________________ (1) Represents common and general partner unit distributions paid to Occidental pursuant to the partnership agreement of the Partnership. See Note 4 and Note 5 . (2) Represents distributions paid to Occidental, through its ownership of WGRAH, pursuant to WES Operating’s partnership agreement. See Note 4 and Note 5 . (3) Represents common units repurchased from Occidental. See Note 5. 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: Statements of operations Three Months Ended Nine Months Ended thousands 2024 2023 2024 2023 General and administrative (1) $ 944 $ 1,137 $ 3,292 $ 3,271 _________________________________________________________________________________________ (1) Includes an intercompany service fee between the Partnership and WES Operating. Balance sheets thousands September 30, December 31, Accounts receivable, net (1) $ 396,943 $ 358,141 Other current assets 2,722 1,235 Other assets 37,616 41,405 Accounts and imbalance payables (1) 57,414 69,472 Accrued liabilities 4,713 4,662 _________________________________________________________________________________________ (1) Includes balances related to transactions between the Partnership and WES Operating. Statements of cash flows Nine Months Ended thousands 2024 2023 Distributions to WES Operating unitholders (1) $ (924,796) $ (912,770) _________________________________________________________________________________________ (1) Represents distributions paid to the Partnership and Occidental, through its ownership of WGRAH, pursuant to WES Operating’s partnership agreement. See Note 4 and Note 5. 6. RELATED-PARTY TRANSACTIONS Related-party revenues. Related - party revenues include amounts earned by the Partnership from services provided to Occidental and from the sale of natural gas, condensate, and NGLs to Occidental. Gathering and processing agreements. The Partnership has significant gathering, processing, and produced-water disposal arrangements with affiliates of Occidental on most of its systems. While Occidental is the contracting counterparty of the Partnership, these arrangements with Occidental include not just Occidental - produced volumes, but also, in some instances, the volumes of other working - interest owners of Occidental who rely on the Partnership’s facilities and infrastructure to bring their volumes to market. Natural-gas throughput (excluding equity-investment throughput) attributable to production owned or controlled by Occidental was 36% and 34% for the three and nine months ended September 30, 2024, respectively, and 34% for both the three and nine months ended September 30, 2023. Crude-oil and NGLs throughput (excluding equity-investment throughput) attributable to production owned or controlled by Occidental was 92% and 90% for the three and nine months ended September 30, 2024, respectively, and 87% for both the three and nine months ended September 30, 2023. Produced-water throughput attributable to production owned or controlled by Occidental was 78% and 77% for the three and nine months ended September 30, 2024, respectively, and 77% and 78% for the three and nine months ended September 30, 2023, 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. Marketing Services. Prior to January 1, 2021, Occidental provided marketing-related services to certain of the Partnership’s subsidiaries. While the Partnership now markets and sells substantially all of its crude oil, residue gas, and NGLs directly to third parties, it does still have some marketing agreements with affiliates of Occidental, the activity for which is reflected in the related-party statements of operations above. Related-party expenses. Operation and maintenance expense includes amounts accrued for or paid to related parties for field - related costs, shared field offices, and easements (see Related-party commercial agreement below) supporting the Partnership’s operations at certain assets. General and administrative expense includes amounts accrued for or paid to Occidental for certain reimbursed expenses pursuant to the 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 Services 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. Occidental performed certain centralized corporate functions for the Partnership and WES Operating pursuant to the agreement dated as of December 31, 2019, by and among Occidental, Anadarko, and WES Operating GP (“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. 6. RELATED-PARTY TRANSACTIONS 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. Also, as a result of the amendments under the CUA, 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. 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	9 Months Ended
Equity Investments	Sep. 30, 2024
Equity Method Investments and Joint Ventures [Abstract]
Equity Investments	7. EQUITY INVESTMENTS The following table presents the financial statement impact of the Partnership’s equity investments for the nine months ended September 30, 2024: thousands Balance at December 31, 2023 Equity Distributions Distributions in excess of cumulative earnings (1) Acquisitions and Divestitures (2) Balance at September 30, 2024 White Cliffs $ 13,248 $ 3,256 $ (3,256) $ (2,558) $ — $ 10,690 Rendezvous 10,815 (1,682) (1,021) (1,240) — 6,872 Mont Belvieu JV 88,556 51 (442) (6,047) (82,118) — TEG 15,185 622 (639) (461) — 14,707 TEP 172,559 19,900 (20,089) (2,093) — 170,277 FRP 186,551 35,823 (34,996) (4,741) — 182,637 Whitethorn LLC 144,799 1,185 3,326 (4,924) (144,386) — Saddlehorn 101,760 4,200 (4,124) (3,096) (98,740) — Panola 18,716 74 (74) (1,021) (17,695) — Mi Vida 45,424 6,862 (7,840) — — 44,446 Red Bluff Express 106,922 13,936 (13,936) (1,379) — 105,543 Total $ 904,535 $ 84,227 $ (83,091) $ (27,560) $ (342,939) $ 535,172 _________________________________________________________________________________________ (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. (2) See Note 3 . During the first quarter of 2024, the Partnership closed on the sale of the following equity investments to third parties: (i) the 25.00% interest in Mont Belvieu JV, (ii) the 20.00% interest in Whitethorn LLC, (iii) the 15.00% interest in Panola, and (iv) the 20.00% interest in Saddlehorn. See Note 3 .

Property, Plant, and Equipment

Property, Plant, and Equipment	9 Months Ended
Property, Plant, and Equipment	Sep. 30, 2024
Property, Plant and Equipment [Abstract]
Property, Plant, and Equipment	8. PROPERTY, PLANT, AND EQUIPMENT A summary of the historical cost of property, plant, and equipment is as follows: thousands Estimated Useful Life September 30, December 31, Land N/A $ 12,550 $ 12,504 Gathering systems – pipelines 30 years 5,833,706 5,890,607 Gathering systems – compressors 15 years 2,645,117 2,553,602 Processing complexes and treating facilities 25 years 4,048,496 3,745,332 Transportation pipeline and equipment 3 to 48 years 257,936 259,314 Produced - water disposal systems 20 years 1,179,217 1,098,616 Assets under construction N/A 424,670 479,368 Other 3 to 40 years 940,501 906,088 Total property, plant, and equipment 15,342,193 14,945,431 Less accumulated depreciation 5,646,602 5,290,415 Net property, plant, and equipment $ 9,695,591 $ 9,655,016 “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. Long-lived asset impairments.

Selected Components of Working

Selected Components of Working Capital	9 Months Ended
Selected Components of Working Capital	Sep. 30, 2024
Selected Components Of Working Capital [Abstract]
Selected Components of Working Capital	9. SELECTED COMPONENTS OF WORKING CAPITAL A summary of accounts receivable, net is as follows: The Partnership WES Operating thousands September 30, December 31, September 30, December 31, Trade receivables, net $ 670,613 $ 665,892 $ 673,816 $ 665,892 Other receivables, net 1,022 745 982 723 Total accounts receivable, net $ 671,635 $ 666,637 $ 674,798 $ 666,615 A summary of other current assets is as follows: The Partnership WES Operating thousands September 30, December 31, September 30, December 31, NGLs inventory $ 1,892 $ 2,557 $ 1,892 $ 2,557 Imbalance receivables 5,341 5,056 5,341 5,056 Prepaid insurance 3,477 21,065 3,056 18,571 Contract assets 11,931 9,595 11,931 9,595 Other 13,675 14,713 13,257 14,689 Total other current assets $ 36,316 $ 52,986 $ 35,477 $ 50,468 A summary of accrued liabilities is as follows: The Partnership WES Operating thousands September 30, December 31, September 30, December 31, Accrued interest expense $ 90,181 $ 124,937 $ 90,181 $ 124,937 Short - term asset retirement obligations 9,864 7,606 9,864 7,606 Short - term remediation and reclamation obligations 1,243 5,490 1,243 5,490 Income taxes payable 6,397 2,908 6,397 2,908 Contract liabilities 10,076 16,866 10,076 16,866 Accrued payroll and benefits 50,721 55,237 — 2,243 Other 35,239 49,528 33,989 43,411 Total accrued liabilities $ 203,721 $ 262,572 $ 151,750 $ 203,461

Debt and Interest Expense

Debt and Interest Expense	9 Months Ended
Debt and Interest Expense	Sep. 30, 2024
Debt Instruments [Abstract]
Debt and Interest Expense	10. DEBT AND INTEREST EXPENSE WES Operating is the borrower for all outstanding debt and is expected to be the borrower for all future debt issuances. The following table presents the outstanding debt: September 30, 2024 December 31, 2023 thousands Principal Carrying Fair Value (1) Principal Carrying Fair Value (1) Short - term debt Commercial paper $ — $ — $ — $ 613,885 $ 610,312 $ 610,312 3.100% Senior Notes due 2025 663,831 663,418 658,879 — — — 3.950% Senior Notes due 2025 336,758 336,145 334,236 — — — Finance lease liabilities 8,455 8,455 8,455 7,436 7,436 7,436 Total short - term debt $ 1,009,044 $ 1,008,018 $ 1,001,570 $ 621,321 $ 617,748 $ 617,748 Long - term debt 3.100% Senior Notes due 2025 $ — $ — $ — $ 666,481 $ 665,145 $ 650,765 3.950% Senior Notes due 2025 — — — 349,163 347,938 341,415 4.650% Senior Notes due 2026 440,505 439,499 440,646 467,204 465,705 459,617 4.500% Senior Notes due 2028 342,935 340,991 339,955 357,094 354,665 346,121 4.750% Senior Notes due 2028 336,260 334,658 336,179 382,888 380,747 374,767 6.350% Senior Notes due 2029 600,000 593,964 637,500 600,000 593,069 626,994 4.050% Senior Notes due 2030 1,057,134 1,051,190 1,018,157 1,104,593 1,097,609 1,036,097 6.150% Senior Notes due 2033 750,000 741,668 793,103 750,000 741,125 780,203 5.450% Senior Notes due 2034 800,000 790,331 802,608 — — — 5.450% Senior Notes due 2044 600,000 594,151 568,686 600,000 594,031 545,154 5.300% Senior Notes due 2048 700,000 687,925 636,440 700,000 687,735 614,082 5.500% Senior Notes due 2048 350,000 343,016 325,073 350,000 342,913 312,365 5.250% Senior Notes due 2050 1,000,000 984,421 908,480 1,000,000 984,206 895,440 Finance lease liabilities 27,398 27,398 27,398 28,668 28,668 28,668 Total long - term debt $ 7,004,232 $ 6,929,212 $ 6,834,225 $ 7,356,091 $ 7,283,556 $ 7,011,688 _________________________________________________________________________________________ (1) Fair value is measured using the market approach and Level - 2 fair value inputs. 10. DEBT AND INTEREST EXPENSE Debt activity. The following table presents the debt activity for the nine months ended September 30, 2024: thousands Carrying Value Balance at December 31, 2023 $ 7,901,304 Commercial paper borrowings (repayments), net (1) (610,312) Issuance of 5.450% Senior Notes due 2034 800,000 Repayment of 3.100% Senior Notes due 2025 (2,650) Repayment of 3.950% Senior Notes due 2025 (12,405) Repayment of 4.650% Senior Notes due 2026 (26,699) Repayment of 4.500% Senior Notes due 2028 (14,159) Repayment of 4.750% Senior Notes due 2028 (46,628) Repayment of 4.050% Senior Notes due 2030 (47,459) Finance lease liabilities (251) Other (3,511) Balance at September 30, 2024 $ 7,937,230 ________________________________________________________________________________________ (1) Net of borrowings and repayments related to commercial paper notes with original maturities of 90 days or less. WES Operating Senior Notes. 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 in January 2020. 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 3.290%, 4.169%, and 5.363%, respectively, at September 30, 2024 and 2023. The effective interest rate of these notes is subject to adjustment from time to time due to a change in credit rating. During the third quarter of 2024, WES Operating completed the public offering of $800.0 million in aggregate principal amount of 5.450% Senior Notes due 2034. Interest is payable semi-annually on May 15th and November 15th of each year, with the initial interest payment being due on May 15, 2025. Net proceeds from the offering will be used to repay a portion of the maturing 3.100% Senior Notes due 2025 and 3.950% Senior Notes due 2025 and for general partnership purposes, including the funding of capital expenditures. During the nine months ended September 30, 2024, WES Operating purchased and retired $150.0 million of certain of its senior notes via open-market repurchases with cash from operations (see Debt activity above) and a gain of $5.4 million was recognized for the early retirement of portions of these notes. As of September 30, 2024, the 3.100% Senior Notes due 2025 and 3.950% Senior Notes due 2025 were classified as short-term debt on the consolidated balance sheet. During the third quarter of 2023, WES Operating completed the public offering of $600.0 million in aggregate principal amount of 6.350% Senior Notes due 2029. Net proceeds from the offering were used to fund a portion of the aggregate purchase price for the Meritage acquisition (see Note 3 ), to pay related costs and expenses, and for general partnership purposes. During the second quarter of 2023, WES Operating completed the public offering of $750.0 million in aggregate principal amount of 6.150% Senior Notes due 2033. Net proceeds from the offering were used to repay borrowings under the RCF and for general partnership purposes. In addition, during 2023, WES Operating purchased and retired $276.7 million of certain of its senior notes via open-market repurchases and redeemed the total principal amount outstanding on the Floating-Rate Senior Notes due 2023 at par value with cash on hand. For the three and nine months ended September 30, 2023, a gain of $8.6 million and $15.4 million, respectively, was recognized for the early retirement of portions of these notes. As of September 30, 2024, WES Operating was in compliance with all covenants under the relevant governing indentures. 10. DEBT AND INTEREST EXPENSE Revolving credit facility. In May 2024, WES Operating entered into an amendment to the RCF to exercise an option to extend the maturity date of the RCF from April 2028 to April 2029, for each extending lender. The non - extending lender’s commitments mature in April 2028 and represent $120.0 million out of $2.0 billion of total commitments from all lenders. In April 2023, WES Operating (i) repaid all then-outstanding borrowings under its RCF with proceeds from the 6.150% Senior Notes due 2033 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, expandable to a maximum of $2.5 billion, through the maturity date. As of September 30, 2024, there were no outstanding borrowings and no outstanding letters of credit, resulting in $2.0 billion in effective borrowing capacity under the RCF. Any outstanding commercial paper borrowings (see below) reduce the effective borrowing capacity under the RCF as WES Operating maintains availability under the RCF as support for its commercial paper program. As of September 30, 2024 and 2023, the interest rate on any outstanding RCF borrowings was 6.15% and 6.62%, respectively. The facility - fee rate was 0.20% at September 30, 2024 and 2023. As of September 30, 2024, WES Operating was in compliance with all covenants under the RCF. Commercial paper program. In November 2023, WES Operating entered into an unsecured commercial paper program under which it may issue (and have outstanding at any one time) an aggregate principal amount up to $2.0 billion. WES Operating intends to maintain a minimum aggregate available borrowing capacity under the RCF equal to the aggregate amount of outstanding commercial paper borrowings. The maturities of the notes may vary, but may not exceed 397 days. As of September 30, 2024, there were no outstanding borrowings under the commercial paper program. Interest expense. The following table summarizes the amounts included in interest expense: Three Months Ended Nine Months Ended thousands 2024 2023 2024 2023 Long - term and short - term debt $ (93,555) $ (83,177) $ (278,361) $ (249,416) Finance lease liabilities (632) (223) (1,964) (616) Commitment fees and amortization of debt-related costs (3,244) (2,904) (9,929) (9,199) Capitalized interest 3,282 3,550 11,077 8,625 Interest expense $ (94,149) $ (82,754) $ (279,177) $ (250,606)

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
Commitments and Contingencies	Sep. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	11. COMMITMENTS AND CONTINGENCIES Environmental obligations. The Partnership is subject to various environmental-remediation obligations arising from federal, state, and local regulations regarding air and water quality, hazardous and solid waste disposal, and other environmental matters. As of September 30, 2024 and December 31, 2023, the consolidated balance sheets included $2.3 million and $7.3 million, respectively, of liabilities for remediation and reclamation obligations. The current portion of these amounts is included in Accrued liabilities Note 9 . 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 expansion, construction, and asset - integrity projects at the West Texas complex, Powder River Basin complex, DBM water systems, DJ Basin complex, and DBM oil system.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Pay vs Performance Disclosure
Net Income (Loss)	$ 288,480	$ 277,296	$ 1,239,958	$ 733,862

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Sep. 30, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Description of Business and B_2

Description of Business and Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2024
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 7) : Percentage Interest Full consolidation Chipeta (1) 75.00 % Proportionate consolidation (2) Springfield system 50.10 % 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 % Rendezvous Gas Services, LLC (“Rendezvous”) 22.00 % Texas Express Pipeline LLC (“TEP”) 20.00 % Texas Express Gathering LLC (“TEG”) 20.00 % 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 this asset. (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 2023 Form 10-K, as filed with the SEC on February 21, 2024. 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 September 30, 2024 (see Note 7 ). The Partnership also owns and controls the entire non - economic general partner interest in WES Operating GP, and the Partnership’s general partner is owned by Occidental. Noncontrolling interests. The Partnership’s noncontrolling interests in the consolidated financial statements consist of (i) the 25% third - party interest in Chipeta and (ii) the 2.0% 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 5.
Use of estimates policy	Use of estimates. In preparing financial statements in accordance with GAAP, management makes informed judgments and estimates that affect the reported amounts of assets, liabilities, revenues, and expenses. Management evaluates its estimates and related assumptions regularly, using historical experience and other reasonable methods. Changes in facts and circumstances or additional information may result in revised estimates, and actual results may differ from these estimates. Effects on the business, financial condition, and results of operations resulting from revisions to estimates are recognized when the facts that give rise to the revisions become known. The information included herein reflects all normal recurring adjustments which are, in the opinion of management, necessary for a fair presentation of the consolidated financial statements.
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. In November 2023, the Financial Accounting Standards Board issued Accounting Standards Update 2023-07, “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures.” The standard improves reportable segment disclosure requirements for public business entities primarily through enhanced disclosures about significant segment expenses that are regularly provided to the chief operating decision maker and included within each reported measure of segment profit (referred to as the “significant expense principle”). The standard will become effective for the Partnership for the fiscal year 2024 annual financial statements and interim financial statements thereafter and will be applied retrospectively for all prior periods presented in the financial statements, with early adoption permitted. The Partnership plans to adopt the standard when it becomes effective beginning with the fiscal year 2024 annual financial statements. The Partnership is currently evaluating the impact this guidance will have on disclosures in the Notes to Consolidated Financial Statements. This standard will have no impact on the Partnership’s financial statements, but will result in additional disclosure.
Recently adopted accounting standards policy	In November 2023, the Financial Accounting Standards Board issued Accounting Standards Update 2023-07, “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures.” The standard improves reportable segment disclosure requirements for public business entities primarily through enhanced disclosures about significant segment expenses that are regularly provided to the chief operating decision maker and included within each reported measure of segment profit (referred to as the “significant expense principle”). The standard will become effective for the Partnership for the fiscal year 2024 annual financial statements and interim financial statements thereafter and will be applied retrospectively for all prior periods presented in the financial statements, with early adoption permitted. The Partnership plans to adopt the standard when it becomes effective beginning with the fiscal year 2024 annual financial statements. The Partnership is currently evaluating the impact this guidance will have on disclosures in the Notes to Consolidated Financial Statements. This standard will have no impact on the Partnership’s financial statements, but will result in additional disclosure.
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 Nine Months Ended thousands except per-unit amounts 2024 2023 2024 2023 Net income (loss) Limited partners’ interest in net income (loss) $ 281,772 $ 270,843 $ 1,211,113 $ 716,902 Weighted-average common units outstanding Basic 380,513 383,561 380,343 384,211 Dilutive effect of non-vested phantom units 2,107 1,211 1,846 1,133 Diluted 382,620 384,772 382,189 385,344 Excluded due to anti-dilutive effect — 143 2,054 123 Net income (loss) per common unit Basic $ 0.74 $ 0.71 $ 3.18 $ 1.87 Diluted $ 0.74 $ 0.70 $ 3.17 $ 1.86 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)	9 Months Ended
Description of Business and Basis of Presentation (Tables)	Sep. 30, 2024
Accounting Policies [Abstract]
Assets and Investments Table	As of September 30, 2024, the Partnership’s assets and investments consisted of the following: Wholly Operated Equity Gathering systems (1) 18 2 1 Treating facilities 39 3 — Natural - gas processing plants/trains 26 3 1 NGLs pipelines 3 — 4 Natural - gas pipelines 6 — 1 Crude - oil pipelines 2 1 1 _________________________________________________________________________________________ (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 7) : Percentage Interest Full consolidation Chipeta (1) 75.00 % Proportionate consolidation (2) Springfield system 50.10 % 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 % Rendezvous Gas Services, LLC (“Rendezvous”) 22.00 % Texas Express Pipeline LLC (“TEP”) 20.00 % Texas Express Gathering LLC (“TEG”) 20.00 % 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 this asset. (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)	9 Months Ended
Revenue from Contracts with Customers (Tables)	Sep. 30, 2024
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 Nine Months Ended thousands 2024 2023 2024 2023 Revenue from customers Service revenues – fee based $ 814,319 $ 695,547 $ 2,389,366 $ 2,004,920 Service revenues – product based 49,115 48,446 177,321 142,212 Product sales 19,673 31,652 109,076 100,336 Total revenue from customers 883,107 775,645 2,675,763 2,247,468 Revenue from other than customers Other 255 368 957 800 Total revenues and other $ 883,362 $ 776,013 $ 2,676,720 $ 2,248,268
Contract Balances Tables	The following table summarizes activity related to contract assets from contracts with customers: thousands Contract assets balance at December 31, 2023 $ 39,292 Amounts transferred to Accounts receivable, net that were included in the contract assets balance at the beginning of the period (1) (5,683) Additional estimated revenues recognized (2) 5,567 Contract assets balance at September 30, 2024 $ 39,176 Contract assets at September 30, 2024 Other current assets $ 11,931 Other assets 27,245 Total contract assets from contracts with customers $ 39,176 _________________________________________________________________________________________ (1) Includes $(1.8) million for the three months ended September 30, 2024. (2) Includes $1.8 million for the three months ended September 30, 2024. thousands Contract liabilities balance at December 31, 2023 $ 445,499 Cash received or receivable, excluding revenues recognized during the period (1) 158,282 Revenues recognized that were included in the contract liability balance at the beginning of the period (2) (22,388) Contract liabilities balance at September 30, 2024 $ 581,393 Contract liabilities at September 30, 2024 Accrued liabilities $ 10,076 Other liabilities 571,317 Total contract liabilities from contracts with customers $ 581,393 _________________________________________________________________________________________ (1) Includes $34.7 million for the three months ended September 30, 2024. (2) Includes $(6.5) million for the three months ended September 30, 2024.
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 2024 $ 296,754 2025 1,111,497 2026 1,049,918 2027 949,426 2028 773,160 Thereafter 2,076,819 Total $ 6,257,574

Acquisitions and Divestitures (

Acquisitions and Divestitures (Tables)	9 Months Ended
Acquisitions and Divestitures (Tables)	Sep. 30, 2024
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]
Acquisition-Date Fair Value Table	The following is the final acquisition-date fair value for the assets acquired and liabilities assumed in the Meritage acquisition on October 13, 2023. thousands Assets acquired: Cash and cash equivalents $ 38,412 Accounts receivable, net 34,060 Other current assets 1,980 Property, plant, and equipment 926,347 Other assets 6,498 Total assets acquired 1,007,297 Liabilities assumed: Accounts payable and accrued liabilities 34,733 Other current liabilities 5,451 Asset retirement obligation 22,156 Other liabilities 28,356 Total liabilities assumed 90,696 Net assets acquired $ 916,601

Partnership Distributions (Tabl

Partnership Distributions (Tables)	9 Months Ended
Partnership Distributions (Tables)	Sep. 30, 2024
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 2023 March 31 (1) $ 0.856 $ 336,987 May 15, 2023 May 1, 2023 June 30 0.5625 221,442 August 14, 2023 July 31, 2023 September 30 0.575 223,432 November 13, 2023 November 1, 2023 December 31 0.575 223,438 February 13, 2024 February 1, 2024 2024 March 31 $ 0.875 $ 340,858 May 15, 2024 May 1, 2024 June 30 0.875 340,859 August 14, 2024 August 1, 2024 September 30 0.875 340,914 November 14, 2024 November 1, 2024 _________________________________________________________________________________________ (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 2023 March 31 (1) $ 342,895 May 2023 June 30 226,260 August 2023 September 30 229,446 November 2023 December 31 229,446 February 2024 2024 March 31 $ 347,675 May 2024 June 30 347,675 August 2024 September 30 347,356 November 2024 _________________________________________________________________________________________ (1) Includes amounts related to the Enhanced Distribution discussed above.

Equity and Partners' Capital (T

Equity and Partners' Capital (Tables)	9 Months Ended
Equity and Partners' Capital (Tables)	Sep. 30, 2024
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 Nine Months Ended thousands except per-unit amounts 2024 2023 2024 2023 Net income (loss) Limited partners’ interest in net income (loss) $ 281,772 $ 270,843 $ 1,211,113 $ 716,902 Weighted-average common units outstanding Basic 380,513 383,561 380,343 384,211 Dilutive effect of non-vested phantom units 2,107 1,211 1,846 1,133 Diluted 382,620 384,772 382,189 385,344 Excluded due to anti-dilutive effect — 143 2,054 123 Net income (loss) per common unit Basic $ 0.74 $ 0.71 $ 3.18 $ 1.87 Diluted $ 0.74 $ 0.70 $ 3.17 $ 1.86

Related-Party Transactions (Tab

Related-Party Transactions (Tables)	9 Months Ended
Related-Party Transactions (Tables)	Sep. 30, 2024
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: Statements of operations Three Months Ended Nine Months Ended thousands 2024 2023 2024 2023 Revenues and other Service revenues – fee based $ 530,434 $ 454,039 $ 1,533,251 $ 1,300,870 Service revenues – product based 13,664 (234) 44,214 14,524 Product sales 1,109 9,818 1,642 38,597 Total revenues and other 545,207 463,623 1,579,107 1,353,991 Equity income, net – related parties (1) 23,977 35,494 84,227 116,839 Operating expenses Cost of product (2) (14,638) (37,083) (46,685) (56,214) Operation and maintenance 2,523 843 8,665 2,493 General and administrative 45 414 299 698 Total operating expenses (12,070) (35,826) (37,721) (53,023) _________________________________________________________________________________________ (1) See Note 7 . (2) Includes related-party natural - gas and NGLs imbalances. Balance sheets thousands September 30, December 31, Assets Accounts receivable, net $ 393,740 $ 358,141 Other current assets 3,140 1,260 Equity investments (1) 535,172 904,535 Other assets 40,871 43,216 Total assets 972,923 1,307,152 Liabilities Accounts and imbalance payables 57,414 38,541 Accrued liabilities 5,029 4,979 Other liabilities (2) 472,075 335,320 Total liabilities 534,518 378,840 _________________________________________________________________________________________ (1) See Note 7 . (2) Includes contract liabilities from contracts with customers. See Note 2 . 6. RELATED-PARTY TRANSACTIONS Statements of cash flows Nine Months Ended thousands 2024 2023 Distributions from equity - investment earnings – related parties $ 83,091 $ 115,897 Contributions to equity investments – related parties — (1,153) Distributions from equity investments in excess of cumulative earnings – related parties 27,560 31,715 Distributions to Partnership unitholders (1) (451,613) (382,438) Distributions to WES Operating unitholders (2) (18,502) (18,260) Unit repurchases from Occidental (3) — (127,500) _________________________________________________________________________________________ (1) Represents common and general partner unit distributions paid to Occidental pursuant to the partnership agreement of the Partnership. See Note 4 and Note 5 . (2) Represents distributions paid to Occidental, through its ownership of WGRAH, pursuant to WES Operating’s partnership agreement. See Note 4 and Note 5 . (3) Represents common units repurchased from Occidental. See Note 5.
WES Operating [Member]
Related Party Transaction [Line Items]
Related-Party Transactions Tables	The following tables summarize material related - party transactions for WES Operating (which are included in the Partnership’s consolidated financial statements) to the extent the amounts differ materially from the Partnership’s consolidated financial statements: Statements of operations Three Months Ended Nine Months Ended thousands 2024 2023 2024 2023 General and administrative (1) $ 944 $ 1,137 $ 3,292 $ 3,271 _________________________________________________________________________________________ (1) Includes an intercompany service fee between the Partnership and WES Operating. Balance sheets thousands September 30, December 31, Accounts receivable, net (1) $ 396,943 $ 358,141 Other current assets 2,722 1,235 Other assets 37,616 41,405 Accounts and imbalance payables (1) 57,414 69,472 Accrued liabilities 4,713 4,662 _________________________________________________________________________________________ (1) Includes balances related to transactions between the Partnership and WES Operating. Statements of cash flows Nine Months Ended thousands 2024 2023 Distributions to WES Operating unitholders (1) $ (924,796) $ (912,770) _________________________________________________________________________________________ (1) Represents distributions paid to the Partnership and Occidental, through its ownership of WGRAH, pursuant to WES Operating’s partnership agreement. See Note 4 and Note 5.

Equity Investments (Tables)

Equity Investments (Tables)	9 Months Ended
Equity Investments (Tables)	Sep. 30, 2024
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 nine months ended September 30, 2024: thousands Balance at December 31, 2023 Equity Distributions Distributions in excess of cumulative earnings (1) Acquisitions and Divestitures (2) Balance at September 30, 2024 White Cliffs $ 13,248 $ 3,256 $ (3,256) $ (2,558) $ — $ 10,690 Rendezvous 10,815 (1,682) (1,021) (1,240) — 6,872 Mont Belvieu JV 88,556 51 (442) (6,047) (82,118) — TEG 15,185 622 (639) (461) — 14,707 TEP 172,559 19,900 (20,089) (2,093) — 170,277 FRP 186,551 35,823 (34,996) (4,741) — 182,637 Whitethorn LLC 144,799 1,185 3,326 (4,924) (144,386) — Saddlehorn 101,760 4,200 (4,124) (3,096) (98,740) — Panola 18,716 74 (74) (1,021) (17,695) — Mi Vida 45,424 6,862 (7,840) — — 44,446 Red Bluff Express 106,922 13,936 (13,936) (1,379) — 105,543 Total $ 904,535 $ 84,227 $ (83,091) $ (27,560) $ (342,939) $ 535,172 _________________________________________________________________________________________ (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. (2) See Note 3 .

Property, Plant, and Equipment

Property, Plant, and Equipment (Tables)	9 Months Ended
Property, Plant, and Equipment (Tables)	Sep. 30, 2024
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 September 30, December 31, Land N/A $ 12,550 $ 12,504 Gathering systems – pipelines 30 years 5,833,706 5,890,607 Gathering systems – compressors 15 years 2,645,117 2,553,602 Processing complexes and treating facilities 25 years 4,048,496 3,745,332 Transportation pipeline and equipment 3 to 48 years 257,936 259,314 Produced - water disposal systems 20 years 1,179,217 1,098,616 Assets under construction N/A 424,670 479,368 Other 3 to 40 years 940,501 906,088 Total property, plant, and equipment 15,342,193 14,945,431 Less accumulated depreciation 5,646,602 5,290,415 Net property, plant, and equipment $ 9,695,591 $ 9,655,016

Selected Components of Workin_2

Selected Components of Working Capital (Tables)	9 Months Ended
Selected Components of Working Capital (Tables)	Sep. 30, 2024
Selected Components Of Working Capital [Abstract]
Accounts Receivable, Net Table	A summary of accounts receivable, net is as follows: The Partnership WES Operating thousands September 30, December 31, September 30, December 31, Trade receivables, net $ 670,613 $ 665,892 $ 673,816 $ 665,892 Other receivables, net 1,022 745 982 723 Total accounts receivable, net $ 671,635 $ 666,637 $ 674,798 $ 666,615
Other Current Assets Table	A summary of other current assets is as follows: The Partnership WES Operating thousands September 30, December 31, September 30, December 31, NGLs inventory $ 1,892 $ 2,557 $ 1,892 $ 2,557 Imbalance receivables 5,341 5,056 5,341 5,056 Prepaid insurance 3,477 21,065 3,056 18,571 Contract assets 11,931 9,595 11,931 9,595 Other 13,675 14,713 13,257 14,689 Total other current assets $ 36,316 $ 52,986 $ 35,477 $ 50,468
Accrued Liabilities Table	A summary of accrued liabilities is as follows: The Partnership WES Operating thousands September 30, December 31, September 30, December 31, Accrued interest expense $ 90,181 $ 124,937 $ 90,181 $ 124,937 Short - term asset retirement obligations 9,864 7,606 9,864 7,606 Short - term remediation and reclamation obligations 1,243 5,490 1,243 5,490 Income taxes payable 6,397 2,908 6,397 2,908 Contract liabilities 10,076 16,866 10,076 16,866 Accrued payroll and benefits 50,721 55,237 — 2,243 Other 35,239 49,528 33,989 43,411 Total accrued liabilities $ 203,721 $ 262,572 $ 151,750 $ 203,461

Debt and Interest Expense (Tabl

Debt and Interest Expense (Tables)	9 Months Ended
Debt and Interest Expense (Tables)	Sep. 30, 2024
Debt Instruments [Abstract]
Debt Outstanding and Debt Activity Tables	The following table presents the outstanding debt: September 30, 2024 December 31, 2023 thousands Principal Carrying Fair Value (1) Principal Carrying Fair Value (1) Short - term debt Commercial paper $ — $ — $ — $ 613,885 $ 610,312 $ 610,312 3.100% Senior Notes due 2025 663,831 663,418 658,879 — — — 3.950% Senior Notes due 2025 336,758 336,145 334,236 — — — Finance lease liabilities 8,455 8,455 8,455 7,436 7,436 7,436 Total short - term debt $ 1,009,044 $ 1,008,018 $ 1,001,570 $ 621,321 $ 617,748 $ 617,748 Long - term debt 3.100% Senior Notes due 2025 $ — $ — $ — $ 666,481 $ 665,145 $ 650,765 3.950% Senior Notes due 2025 — — — 349,163 347,938 341,415 4.650% Senior Notes due 2026 440,505 439,499 440,646 467,204 465,705 459,617 4.500% Senior Notes due 2028 342,935 340,991 339,955 357,094 354,665 346,121 4.750% Senior Notes due 2028 336,260 334,658 336,179 382,888 380,747 374,767 6.350% Senior Notes due 2029 600,000 593,964 637,500 600,000 593,069 626,994 4.050% Senior Notes due 2030 1,057,134 1,051,190 1,018,157 1,104,593 1,097,609 1,036,097 6.150% Senior Notes due 2033 750,000 741,668 793,103 750,000 741,125 780,203 5.450% Senior Notes due 2034 800,000 790,331 802,608 — — — 5.450% Senior Notes due 2044 600,000 594,151 568,686 600,000 594,031 545,154 5.300% Senior Notes due 2048 700,000 687,925 636,440 700,000 687,735 614,082 5.500% Senior Notes due 2048 350,000 343,016 325,073 350,000 342,913 312,365 5.250% Senior Notes due 2050 1,000,000 984,421 908,480 1,000,000 984,206 895,440 Finance lease liabilities 27,398 27,398 27,398 28,668 28,668 28,668 Total long - term debt $ 7,004,232 $ 6,929,212 $ 6,834,225 $ 7,356,091 $ 7,283,556 $ 7,011,688 _________________________________________________________________________________________ (1) Fair value is measured using the market approach and Level - 2 fair value inputs. 10. DEBT AND INTEREST EXPENSE Debt activity. The following table presents the debt activity for the nine months ended September 30, 2024: thousands Carrying Value Balance at December 31, 2023 $ 7,901,304 Commercial paper borrowings (repayments), net (1) (610,312) Issuance of 5.450% Senior Notes due 2034 800,000 Repayment of 3.100% Senior Notes due 2025 (2,650) Repayment of 3.950% Senior Notes due 2025 (12,405) Repayment of 4.650% Senior Notes due 2026 (26,699) Repayment of 4.500% Senior Notes due 2028 (14,159) Repayment of 4.750% Senior Notes due 2028 (46,628) Repayment of 4.050% Senior Notes due 2030 (47,459) Finance lease liabilities (251) Other (3,511) Balance at September 30, 2024 $ 7,937,230 ________________________________________________________________________________________ (1) Net of borrowings and repayments related to commercial paper notes with original maturities of 90 days or less.
Interest Expense Table	The following table summarizes the amounts included in interest expense: Three Months Ended Nine Months Ended thousands 2024 2023 2024 2023 Long - term and short - term debt $ (93,555) $ (83,177) $ (278,361) $ (249,416) Finance lease liabilities (632) (223) (1,964) (616) Commitment fees and amortization of debt-related costs (3,244) (2,904) (9,929) (9,199) Capitalized interest 3,282 3,550 11,077 8,625 Interest expense $ (94,149) $ (82,754) $ (279,177) $ (250,606)

Description of Business and B_4

Description of Business and Basis of Presentation - Assets and Investments Table (Details)	Sep. 30, 2024 unit
Wholly Owned and Operated [Member] \| Gathering Systems [Member]
Assets [Line Items]
Assets, number of units	18
Wholly Owned and Operated [Member] \| Treating Facilities [Member]
Assets [Line Items]
Assets, number of units	39
Wholly Owned and Operated [Member] \| Natural-Gas Processing Plants/Trains [Member]
Assets [Line Items]
Assets, number of units	26
Wholly Owned and Operated [Member] \| Natural-Gas Liquids Pipelines [Member]
Assets [Line Items]
Assets, number of units	3
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	2
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
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	1
Equity Interests [Member] \| Natural-Gas Liquids Pipelines [Member]
Assets [Line Items]
Assets, number of units	4
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	1

Description of Business and B_5

Description of Business and Basis of Presentation - Ownership Interests and Method of Consolidation Table (Details)	9 Months Ended
	Sep. 30, 2024
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%
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] \| 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] \| 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		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Long-Term Incentive Plans [Member]
Equity-based compensation, number of units issued			1,035,444	832,707
Equity-based compensation, expense	$ 8.8	$ 7.2	$ 28.6	$ 22
WES Operating [Member]
Ownership interest by noncontrolling interest owner	2%		2%
Chipeta [Member]
Ownership interest by noncontrolling interest owner	25%		25%
WES [Member] \| WES Operating [Member]
Ownership interest			98%

Revenue from Contracts with C_3

Revenue from Contracts with Customers - Revenue From Contracts With Customers Table (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Revenue from customers		$ 883,107	$ 775,645	$ 2,675,763	$ 2,247,468
Revenue from other than customers, other		255	368	957	800
Total revenues and other	[1]	883,362	776,013	2,676,720	2,248,268
Service Revenues - Fee Based [Member]
Disaggregation of Revenue [Line Items]
Revenue from customers		814,319	695,547	2,389,366	2,004,920
Total revenues and other		814,319	695,547	2,389,366	2,004,920
Service Revenues - Product Based [Member]
Disaggregation of Revenue [Line Items]
Revenue from customers		49,115	48,446	177,321	142,212
Total revenues and other		49,115	48,446	177,321	142,212
Product Sales [Member]
Disaggregation of Revenue [Line Items]
Revenue from customers		19,673	31,652	109,076	100,336
Total revenues and other		$ 19,673	$ 31,652	$ 109,076	$ 100,336

[1] Total revenues and other includes related-party amounts of $545.2 million and $1.6 billion for the three and nine months ended September 30, 2024, respectively, and $463.6 million and $1.4 billion for the three and nine months ended September 30, 2023, respectively. See Note 6 .

Revenue from Contracts with C_4

Revenue from Contracts with Customers - Contract Assets Table (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2024	Dec. 31, 2023
Change in Contracts with Customer, Asset [Roll Forward]
Contract assets balance at beginning of year		$ 39,292
Amounts transferred to Accounts receivable, net that were included in the contract assets balance at the beginning of the period	$ (1,800)	(5,683)
Additional estimated revenues recognized	1,800	5,567
Contract assets balance at end of period	39,176	39,176
Contract Assets [Abstract]
Other current assets	11,931	11,931	$ 9,595
Other assets	27,245	27,245
Total contract assets from contracts with customers	$ 39,176	$ 39,176	$ 39,292

Revenue from Contracts with C_5

Revenue from Contracts with Customers - Contract Liabilities Table (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2024	Dec. 31, 2023
Change in Contracts with Customer, Liability [Roll Forward]
Contract liabilities balance at begining of year		$ 445,499
Cash received or receivable, excluding revenues recognized during the period	$ 34,700	158,282
Revenues recognized that were included in the contract liability balance at the beginning of the period	(6,500)	(22,388)
Contract liabilities balance at end of period	581,393	581,393
Contract Liabilities [Abstract]
Accrued liabilities	10,076	10,076	$ 16,866
Other liabilities	571,317	571,317
Total contract liabilities from contracts with customers	$ 581,393	$ 581,393	$ 445,499

Revenue from Contracts with C_6

Revenue from Contracts with Customers - Expected Revenues Table (Details) $ in Thousands	Sep. 30, 2024 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligation expected to be satisfied	$ 6,257,574
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligation expected to be satisfied	$ 296,754
Performance obligation expected to be satisfied, expected timing	3 months
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	$ 1,111,497
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	$ 1,049,918
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	$ 949,426
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	$ 773,160
Performance obligation expected to be satisfied, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligation expected to be satisfied	$ 2,076,819
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	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023
Revenue from Contracts with Customer [Line Items]
Accounts receivable, net	$ 671,635	$ 666,637
Customers [Member]
Revenue from Contracts with Customer [Line Items]
Accounts receivable, net	$ 664,000		$ 661,600

Acquisitions and Divestitures -

Acquisitions and Divestitures - Acquisition-Date Fair Value Table (Details) $ in Thousands	Oct. 13, 2023 USD ($)
Assets acquired
Cash and cash equivalents	$ 38,412
Accounts receivable, net	34,060
Other current assets	1,980
Property, plant, and equipment	926,347
Other assets	6,498
Total assets acquired	1,007,297
Liabilities assumed
Accounts payable and accrued liabilities	34,733
Other current liabilities	5,451
Asset retirement obligation	22,156
Other liabilities	28,356
Total liabilities assumed	90,696
Net assets acquired	$ 916,601

Acquisitions and Divestitures_2

Acquisitions and Divestitures - Additional Information (Details) - USD ($) $ in Thousands		3 Months Ended				9 Months Ended
	Oct. 13, 2023	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
(Gain) loss on disposition of assets and other net		$ 467			$ (1,480)	$ 299,426	$ (3,668)
Distributions						83,091	115,897
Cash and cash equivalents	$ 38,412
WES Operating [Member]
Property, Plant and Equipment [Line Items]
(Gain) loss on disposition of assets and other net		467			$ (1,480)	299,426	(3,668)
Distributions						83,091	$ 115,897
6.350% Senior Notes due 2029 [Member] \| Senior Notes [Member] \| WES Operating [Member]
Property, Plant and Equipment [Line Items]
Principal amount		$ 600,000				600,000		$ 600,000
Meritage
Property, Plant and Equipment [Line Items]
Cash payment for acquisition, prior to closing adjustments	885,000
Cash and cash equivalents	38,400
Cash payment for acquisition	$ 878,200
Equity Investments [Member]
Property, Plant and Equipment [Line Items]
(Gain) loss on disposition of assets and other net				$ 239,700
Proceeds from sale of equity method investments				588,600
Distributions				$ 5,900
Mont Belvieu JV [Member]
Property, Plant and Equipment [Line Items]
Distributions						442
Mont Belvieu JV [Member] \| Equity Investments [Member]
Property, Plant and Equipment [Line Items]
Equity-investment ownership percentage				25%
Whitethorn LLC [Member]
Property, Plant and Equipment [Line Items]
Distributions						(3,326)
Whitethorn LLC [Member] \| Equity Investments [Member]
Property, Plant and Equipment [Line Items]
Equity-investment ownership percentage				20%
Panola [Member]
Property, Plant and Equipment [Line Items]
Distributions						74
Panola [Member] \| Equity Investments [Member]
Property, Plant and Equipment [Line Items]
Equity-investment ownership percentage				15%
Saddlehorn [Member]
Property, Plant and Equipment [Line Items]
Distributions						$ 4,124
Saddlehorn [Member] \| Equity Investments [Member]
Property, Plant and Equipment [Line Items]
Equity-investment ownership percentage				20%
Marcellus Interest Systems [Member] \| Proportionate Consolidation [Member]
Property, Plant and Equipment [Line Items]
Percentage ownership interest			33.75%
Proceeds from sale of proportionately consolidated entity			$ 206,200
(Gain) loss on disposition of assets and other net			$ 63,900

Partnership Distributions - Cas

Partnership Distributions - Cash Distributions Tables (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023
Distribution Made to Limited Partner [Line Items]
Total quarterly per-unit distribution	$ 0.875	$ 0.875	$ 0.875	$ 0.575	$ 0.575	$ 0.5625	$ 0.856
Total quarterly cash distribution	$ 340,914	$ 340,859	$ 340,858	$ 223,438	$ 223,432	$ 221,442	$ 336,987
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	$ 347,356	$ 347,675	$ 347,675	$ 229,446	$ 229,446	$ 226,260	$ 342,895

Partnership Distributions - Add

Partnership Distributions - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	9 Months Ended
	Mar. 31, 2023	Sep. 30, 2024
Distribution Made to Limited Partner [Line Items]
Enhanced quarterly per-unit distribution	$ 0.356
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		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Equity [Abstract]
Limited partners' interest in net income (loss)	[1]	$ 281,772	$ 270,843	$ 1,211,113	$ 716,902
Weighted-average common units outstanding
Basic	[1]	380,513	383,561	380,343	384,211
Dilutive effect of non-vested phantom units		2,107	1,211	1,846	1,133
Diluted	[1]	382,620	384,772	382,189	385,344
Excluded due to anti-dilutive effect		0	143	2,054	123
Net income (loss) per common unit
Basic	[1]	$ 0.74	$ 0.71	$ 3.18	$ 1.87
Diluted	[1]	$ 0.74	$ 0.70	$ 3.17	$ 1.86

[1] See Note 5.

Equity and Partners' Capital _2

Equity and Partners' Capital - Additional Information (Details) - USD ($)		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023	Nov. 02, 2022
Schedule of Investments [Line Items]
Common units outstanding		380,555,427		379,519,983
General partner units outstanding		9,060,641		9,060,641
Unit repurchases, authorized amount					$ 1,250,000,000
Unit repurchases, amount	[1]	$ 0	$ 134,602,000
Unit repurchases, remaining authorized amount		$ 627,800,000
Public [Member]
Schedule of Investments [Line Items]
Unit repurchases, number of units		0	5,387,322
WES [Member] \| Public [Member]
Schedule of Investments [Line Items]
Common units outstanding		214,873,849
Limited partner's interest		55.20%
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		165,681,578
Limited partner's interest		42.50%
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%

[1] Includes related-party amounts. See Note 6 .

Related-Party Transactions - Su

Related-Party Transactions - Summary of WES Related-Party Transactions Tables (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Consolidated statements of operations [Abstract]
Revenues and other	[1]	$ 883,362	$ 776,013	$ 2,676,720	$ 2,248,268
Equity income, net – related parties		23,977	35,494	84,227	116,839
Cost of product		32,847	27,590	132,936	123,795
Operation and maintenance		231,066	204,434	649,324	562,104
General and administrative		64,726	55,050	195,498	159,572
Total operating expenses	[2]	511,940	449,265	1,515,384	1,373,793
Consolidated balance sheets [Abstract]
Accounts receivable, net		671,635		671,635		$ 666,637
Other current assets		36,316		36,316		52,986
Equity investments		535,172		535,172		904,535
Other assets	[3]	255,333		255,333		233,455
Total assets	[4]	12,981,224		12,981,224		12,471,607
Accounts and imbalance payables		387,158		387,158		362,451
Accrued liabilities		203,721		203,721		262,572
Other liabilities		624,008		624,008		480,212
Total liabilities	[5]	9,603,707		9,603,707		9,442,477
Consolidated statements of cash flows [Abstract]
Distributions from equity-investment earnings – related parties				83,091	115,897
Contributions to equity investments – related parties				0	(1,153)
Distributions from equity investments in excess of cumulative earnings – related parties				27,560	31,715
Distributions to Partnership unitholders	[6]			(905,155)	(754,998)
Unit repurchases from Occidental	[6]			0	(134,602)
Service Revenues - Fee Based [Member]
Consolidated statements of operations [Abstract]
Revenues and other		814,319	695,547	2,389,366	2,004,920
Service Revenues - Product Based [Member]
Consolidated statements of operations [Abstract]
Revenues and other		49,115	48,446	177,321	142,212
Product Sales [Member]
Consolidated statements of operations [Abstract]
Revenues and other		19,673	31,652	109,076	100,336
Related Parties [Member]
Consolidated statements of operations [Abstract]
Revenues and other		545,207	463,623	1,579,107	1,353,991
Cost of product		(14,638)	(37,083)	(46,685)	(56,214)
Operation and maintenance		2,523	843	8,665	2,493
General and administrative		45	414	299	698
Total operating expenses		(12,070)	(35,826)	(37,721)	(53,023)
Consolidated balance sheets [Abstract]
Accounts receivable, net		393,740		393,740		358,141
Other current assets		3,140		3,140		1,260
Other assets		40,871		40,871		43,216
Total assets		972,923		972,923		1,307,152
Accounts and imbalance payables		57,414		57,414		38,541
Accrued liabilities		5,029		5,029		4,979
Other liabilities		472,075		472,075		335,320
Total liabilities		534,518		534,518		$ 378,840
Consolidated statements of cash flows [Abstract]
Distributions to Partnership unitholders				(451,613)	(382,438)
Unit repurchases from Occidental				0	(127,500)
Related Parties [Member] \| WES Operating [Member]
Consolidated statements of cash flows [Abstract]
Distributions to Partnership unitholders				(18,502)	(18,260)
Related Parties [Member] \| Service Revenues - Fee Based [Member]
Consolidated statements of operations [Abstract]
Revenues and other		530,434	454,039	1,533,251	1,300,870
Related Parties [Member] \| Service Revenues - Product Based [Member]
Consolidated statements of operations [Abstract]
Revenues and other		13,664	(234)	44,214	14,524
Related Parties [Member] \| Product Sales [Member]
Consolidated statements of operations [Abstract]
Revenues and other		$ 1,109	$ 9,818	$ 1,642	$ 38,597

[1] Total revenues and other includes related-party amounts of $545.2 million and $1.6 billion for the three and nine months ended September 30, 2024, respectively, and $463.6 million and $1.4 billion for the three and nine months ended September 30, 2023, respectively. See Note 6 . Total operating expenses includes related-party amounts of $(12.1) million and $(37.7) million for the three and nine months ended September 30, 2024, respectively, and $(35.8) million and $(53.0) million for the three and nine months ended September 30, 2023, respectively, all primarily related to changes in imbalance positions. See Note 6 . Other assets includes $3.9 million and $5.7 million of NGLs line - fill inventory as of September 30, 2024, and December 31, 2023, respectively. Other assets also includes $128.9 million and $96.3 million of materials and supplies inventory as of September 30, 2024, and December 31, 2023, respectively. Total assets includes related - party amounts of $972.9 million and $1.3 billion as of September 30, 2024, and December 31, 2023, respectively, which includes related - party Accounts receivable, net of $393.7 million and $358.1 million as of September 30, 2024, and December 31, 2023, respectively. See Note 6 . Total liabilities includes related - party amounts of $534.5 million and $378.8 million as of September 30, 2024, and December 31, 2023, respectively. See Note 6 . Includes related-party amounts. See Note 6 .

Related-Party Transactions - _2

Related-Party Transactions - Summary of WES Operating Related-Party Transactions Tables (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Consolidated statements of operations [Abstract]
General and administrative		$ 64,726	$ 55,050	$ 195,498	$ 159,572
Consolidated balance sheets [Abstract]
Accounts receivable, net		671,635		671,635		$ 666,637
Other current assets		36,316		36,316		52,986
Other assets	[1]	255,333		255,333		233,455
Accounts and imbalance payables		387,158		387,158		362,451
Accrued liabilities		203,721		203,721		262,572
Consolidated statements of cash flows [Abstract]
Distributions to WES Operating unitholders	[2]			(905,155)	(754,998)
Related Parties [Member]
Consolidated statements of operations [Abstract]
General and administrative		45	414	299	698
Consolidated balance sheets [Abstract]
Accounts receivable, net		393,740		393,740		358,141
Other current assets		3,140		3,140		1,260
Other assets		40,871		40,871		43,216
Accounts and imbalance payables		57,414		57,414		38,541
Accrued liabilities		5,029		5,029		4,979
Consolidated statements of cash flows [Abstract]
Distributions to WES Operating unitholders				(451,613)	(382,438)
WES Operating [Member]
Consolidated statements of operations [Abstract]
General and administrative		64,017	54,541	193,497	157,645
Consolidated balance sheets [Abstract]
Accounts receivable, net		674,798		674,798		666,615
Other current assets		35,477		35,477		50,468
Other assets	[3]	252,078		252,078		231,644
Accounts and imbalance payables		387,135		387,135		392,752
Accrued liabilities		151,750		151,750		203,461
Consolidated statements of cash flows [Abstract]
Distributions to WES Operating unitholders	[4]			(924,796)	(912,770)
WES Operating [Member] \| Related Parties [Member]
Consolidated statements of operations [Abstract]
General and administrative		944	$ 1,137	3,292	3,271
Consolidated balance sheets [Abstract]
Accounts receivable, net		396,943		396,943		358,141
Other current assets		2,722		2,722		1,235
Other assets		37,616		37,616		41,405
Accounts and imbalance payables		57,414		57,414		69,472
Accrued liabilities		$ 4,713		4,713		$ 4,662
Consolidated statements of cash flows [Abstract]
Distributions to WES Operating unitholders				$ (924,796)	$ (912,770)

[1] Other assets includes $3.9 million and $5.7 million of NGLs line - fill inventory as of September 30, 2024, and December 31, 2023, respectively. Other assets also includes $128.9 million and $96.3 million of materials and supplies inventory as of September 30, 2024, and December 31, 2023, respectively. Includes related-party amounts. See Note 6 . Other assets includes $3.9 million and $5.7 million of NGLs line - fill inventory as of September 30, 2024, and December 31, 2023, respectively. Other assets also includes $128.9 million and $96.3 million of materials and supplies inventory as of September 30, 2024, and December 31, 2023, respectively. Includes related-party amounts. See Note 6.

Related-Party Transactions - Ad

Related-Party Transactions - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Mar. 31, 2021	Sep. 30, 2024	Sep. 30, 2023
Related Parties [Member]
Related Party Transaction [Line Items]
Present value of reduced usage fees			$ 30
Right-of-use asset recognized			$ 30
Natural Gas [Member]
Related Party Transaction [Line Items]
Related-party throughput percentage	36%	34%		34%	34%
Crude Oil and NGLs Member]
Related Party Transaction [Line Items]
Related-party throughput percentage	92%	87%		90%	87%
Produced water [Member]
Related Party Transaction [Line Items]
Related-party throughput percentage	78%	77%		77%	78%

Equity Investments - Equity Inv

Equity Investments - Equity Investments Table (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			$ 904,535
Equity income, net	$ 23,977	$ 35,494	84,227	$ 116,839
Distributions			(83,091)	(115,897)
Distributions in excess of cumulative earnings			(27,560)	$ (31,715)
Acquisitions and divestitures			(342,939)
Balance at end of period	535,172		535,172
White Cliffs [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			13,248
Equity income, net			3,256
Distributions			(3,256)
Distributions in excess of cumulative earnings			(2,558)
Acquisitions and divestitures			0
Balance at end of period	10,690		10,690
Rendezvous [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			10,815
Equity income, net			(1,682)
Distributions			(1,021)
Distributions in excess of cumulative earnings			(1,240)
Acquisitions and divestitures			0
Balance at end of period	6,872		6,872
Mont Belvieu JV [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			88,556
Equity income, net			51
Distributions			(442)
Distributions in excess of cumulative earnings			(6,047)
Acquisitions and divestitures			(82,118)
Balance at end of period	0		0
Texas Express Gathering [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			15,185
Equity income, net			622
Distributions			(639)
Distributions in excess of cumulative earnings			(461)
Acquisitions and divestitures			0
Balance at end of period	14,707		14,707
Texas Express Pipeline [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			172,559
Equity income, net			19,900
Distributions			(20,089)
Distributions in excess of cumulative earnings			(2,093)
Acquisitions and divestitures			0
Balance at end of period	170,277		170,277
Front Range Pipeline [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			186,551
Equity income, net			35,823
Distributions			(34,996)
Distributions in excess of cumulative earnings			(4,741)
Acquisitions and divestitures			0
Balance at end of period	182,637		182,637
Whitethorn LLC [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			144,799
Equity income, net			1,185
Distributions			3,326
Distributions in excess of cumulative earnings			(4,924)
Acquisitions and divestitures			(144,386)
Balance at end of period	0		0
Saddlehorn [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			101,760
Equity income, net			4,200
Distributions			(4,124)
Distributions in excess of cumulative earnings			(3,096)
Acquisitions and divestitures			(98,740)
Balance at end of period	0		0
Panola [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			18,716
Equity income, net			74
Distributions			(74)
Distributions in excess of cumulative earnings			(1,021)
Acquisitions and divestitures			(17,695)
Balance at end of period	0		0
Mi Vida [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			45,424
Equity income, net			6,862
Distributions			(7,840)
Distributions in excess of cumulative earnings			0
Acquisitions and divestitures			0
Balance at end of period	44,446		44,446
Red Bluff Express [Member]
Schedule of Equity Method Investments [Line Items]
Balance at beginning of year			106,922
Equity income, net			13,936
Distributions			(13,936)
Distributions in excess of cumulative earnings			(1,379)
Acquisitions and divestitures			0
Balance at end of period	$ 105,543		$ 105,543

Equity Investments - Additional

Equity Investments - Additional Information (Details) - Equity Investments [Member]	Mar. 31, 2024
Mont Belvieu JV [Member]
Schedule of Equity Method Investments [Line Items]
Equity-investment ownership percentage	25%
Whitethorn LLC [Member]
Schedule of Equity Method Investments [Line Items]
Equity-investment ownership percentage	20%
Panola [Member]
Schedule of Equity Method Investments [Line Items]
Equity-investment ownership percentage	15%
Saddlehorn [Member]
Schedule of Equity Method Investments [Line Items]
Equity-investment ownership percentage	20%

Property, Plant, and Equipmen_2

Property, Plant, and Equipment - Historical Cost Table (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	$ 15,342,193	$ 14,945,431
Less accumulated depreciation	5,646,602	5,290,415
Net property, plant, and equipment	9,695,591	9,655,016
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	12,550	12,504
Gathering Systems – Pipelines [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	$ 5,833,706	5,890,607
Estimated useful life	30 years
Gathering Systems – Compressors [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	$ 2,645,117	2,553,602
Estimated useful life	15 years
Processing Complexes And Treating Facilities [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	$ 4,048,496	3,745,332
Estimated useful life	25 years
Transportation Pipeline And Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	$ 257,936	259,314
Transportation Pipeline And Equipment [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	3 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	$ 1,179,217	1,098,616
Estimated useful life	20 years
Assets Under Construction [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	$ 424,670	479,368
Other [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	$ 940,501	$ 906,088
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		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Property, Plant and Equipment [Line Items]
Long-lived asset and other impairments	[1]	$ 4,651	$ 245	$ 6,204	$ 52,880
Rockies Assets [Member]
Property, Plant and Equipment [Line Items]
Long-lived asset and other impairments					52,100
Rockies Assets [Member] \| Level-3 Inputs [Member] \| Fair Value, Nonrecurring [Member] \| Valuation, Income Approach [Member]
Property, Plant and Equipment [Line Items]
Estimated fair value			$ 22,800		$ 22,800

[1] See Note 8 .

Selected Components of Workin_3

Selected Components of Working Capital - Accounts Receivable, Net Table (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Trade receivables, net	$ 670,613	$ 665,892
Other receivables, net	1,022	745
Total accounts receivable, net	671,635	666,637
WES Operating [Member]
Trade receivables, net	673,816	665,892
Other receivables, net	982	723
Total accounts receivable, net	$ 674,798	$ 666,615

Selected Components of Workin_4

Selected Components of Working Capital - Other Current Assets Table (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
NGLs inventory	$ 1,892	$ 2,557
Imbalance receivables	5,341	5,056
Prepaid insurance	3,477	21,065
Contract assets	11,931	9,595
Other	13,675	14,713
Total other current assets	36,316	52,986
WES Operating [Member]
NGLs inventory	1,892	2,557
Imbalance receivables	5,341	5,056
Prepaid insurance	3,056	18,571
Contract assets	11,931	9,595
Other	13,257	14,689
Total other current assets	$ 35,477	$ 50,468

Selected Components of Workin_5

Selected Components of Working Capital - Accrued Liabilities Table (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Accrued interest expense	$ 90,181	$ 124,937
Short-term asset retirement obligations	9,864	7,606
Short-term remediation and reclamation obligations	1,243	5,490
Income taxes payable	6,397	2,908
Contract liabilities	10,076	16,866
Accrued payroll and benefits	50,721	55,237
Other	35,239	49,528
Total accrued liabilities	203,721	262,572
WES Operating [Member]
Accrued interest expense	90,181	124,937
Short-term asset retirement obligations	9,864	7,606
Short-term remediation and reclamation obligations	1,243	5,490
Income taxes payable	6,397	2,908
Contract liabilities	10,076	16,866
Accrued payroll and benefits	0	2,243
Other	33,989	43,411
Total accrued liabilities	$ 151,750	$ 203,461

Debt and Interest Expense - Deb

Debt and Interest Expense - Debt Outstanding Table (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Total short-term debt, principal	$ 1,009,044	$ 621,321
Total short-term debt, carrying value	1,008,018	617,748
Total long-term debt, carrying value	6,929,212	7,283,556
Valuation, Market Approach [Member] \| Level-2 Inputs [Member]
Debt Instrument [Line Items]
Short-term debt, fair value	1,001,570	617,748
Long-Term Debt Obligations [Member]
Debt Instrument [Line Items]
Total long-term debt, principal	7,004,232	7,356,091
Total long-term debt, carrying value	6,929,212	7,283,556
Long-Term Debt Obligations [Member] \| Valuation, Market Approach [Member] \| Level-2 Inputs [Member]
Debt Instrument [Line Items]
Long-term debt, fair value	6,834,225	7,011,688
WES Operating [Member]
Debt Instrument [Line Items]
Total short-term debt, carrying value	1,008,018	617,748
Total long-term debt, carrying value	6,929,212	7,283,556
WES Operating [Member] \| Finance Lease Liability, Short Term [Member]
Debt Instrument [Line Items]
Finance leases - short-term debt	8,455	7,436
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	8,455	7,436
WES Operating [Member] \| Finance Lease Liability, Long Term [Member]
Debt Instrument [Line Items]
Finance leases - long-term debt	27,398	28,668
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	27,398	28,668
WES Operating [Member] \| Commercial Paper Program \| Commercial Paper Program
Debt Instrument [Line Items]
Principal	0	613,885
Commercial paper, carrying value	0	610,312
WES Operating [Member] \| Commercial Paper Program \| Commercial Paper Program \| Valuation, Market Approach [Member] \| Level-2 Inputs [Member]
Debt Instrument [Line Items]
Short-term debt, fair value	$ 0	610,312
WES Operating [Member] \| Senior Notes [Member] \| 3.100% Senior Notes due 2025 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	3.10%
Principal	$ 663,831	666,481
Short-term debt, carrying value	663,418
Long-term debt, carrying value		665,145
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]
Short-term debt, fair value	$ 658,879
Long-term debt, fair value		650,765
WES Operating [Member] \| Senior Notes [Member] \| 3.950% Senior Notes due 2025 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	3.95%
Principal	$ 336,758	349,163
Short-term debt, carrying value	336,145
Long-term debt, carrying value		347,938
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]
Short-term debt, fair value	$ 334,236
Long-term debt, fair value		341,415
WES Operating [Member] \| Senior Notes [Member] \| 4.650% Senior Notes due 2026 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	4.65%
Principal	$ 440,505	467,204
Long-term debt, carrying value	439,499	465,705
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	$ 440,646	459,617
WES Operating [Member] \| Senior Notes [Member] \| 4.500% Senior Notes due 2028 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	4.50%
Principal	$ 342,935	357,094
Long-term debt, carrying value	340,991	354,665
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	$ 339,955	346,121
WES Operating [Member] \| Senior Notes [Member] \| 4.750% Senior Notes due 2028 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	4.75%
Principal	$ 336,260	382,888
Long-term debt, carrying value	334,658	380,747
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	$ 336,179	374,767
WES Operating [Member] \| Senior Notes [Member] \| 6.350% Senior Notes due 2029 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	6.35%
Principal	$ 600,000	600,000
Long-term debt, carrying value	593,964	593,069
WES Operating [Member] \| Senior Notes [Member] \| 6.350% Senior Notes due 2029 [Member] \| Valuation, Market Approach [Member] \| Level-2 Inputs [Member]
Debt Instrument [Line Items]
Long-term debt, fair value	$ 637,500	626,994
WES Operating [Member] \| Senior Notes [Member] \| 4.050% Senior Notes due 2030 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	4.05%
Principal	$ 1,057,134	1,104,593
Long-term debt, carrying value	1,051,190	1,097,609
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	$ 1,018,157	1,036,097
WES Operating [Member] \| Senior Notes [Member] \| 6.150% Senior Notes due 2033 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	6.15%
Principal	$ 750,000	750,000
Long-term debt, carrying value	741,668	741,125
WES Operating [Member] \| Senior Notes [Member] \| 6.150% Senior Notes due 2033 [Member] \| Valuation, Market Approach [Member] \| Level-2 Inputs [Member]
Debt Instrument [Line Items]
Long-term debt, fair value	$ 793,103	780,203
WES Operating [Member] \| Senior Notes [Member] \| 5.450% Senior Notes due 2034 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	5.45%
Principal	$ 800,000
Long-term debt, carrying value	790,331
WES Operating [Member] \| Senior Notes [Member] \| 5.450% Senior Notes due 2034 [Member] \| Valuation, Market Approach [Member] \| Level-2 Inputs [Member]
Debt Instrument [Line Items]
Long-term debt, fair value	$ 802,608
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	594,151	594,031
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	$ 568,686	545,154
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	687,925	687,735
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	$ 636,440	614,082
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	343,016	342,913
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	$ 325,073	312,365
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	984,421	984,206
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	$ 908,480	$ 895,440

Debt and Interest Expense - D_2

Debt and Interest Expense - Debt Activity Table (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Changes in Debt Outstanding [Roll Forward]
Beginning balance	$ 7,901,304
Commercial paper borrowings (repayments), net	(610,312)	$ 0
Ending balance	7,937,230		$ 7,901,304
WES Operating [Member]
Changes in Debt Outstanding [Roll Forward]
Commercial paper borrowings (repayments), net	(610,312)	$ 0
Other	(3,511)
WES Operating [Member] \| Senior Notes [Member]
Changes in Debt Outstanding [Roll Forward]
Repayments of senior notes	(150,000)		$ (276,700)
WES Operating [Member] \| Commercial Paper Program \| Commercial Paper Program
Changes in Debt Outstanding [Roll Forward]
Commercial paper borrowings (repayments), net	(610,312)
WES Operating [Member] \| 5.450% Senior Notes due 2034 [Member] \| Senior Notes [Member]
Changes in Debt Outstanding [Roll Forward]
Proceeds from issuance senior notes	$ 800,000
Senior note, interest rate	5.45%
WES Operating [Member] \| 3.100% Senior Notes due 2025 [Member] \| Senior Notes [Member]
Changes in Debt Outstanding [Roll Forward]
Repayments of senior notes	$ (2,650)
Senior note, interest rate	3.10%
WES Operating [Member] \| 3.950% Senior Notes due 2025 [Member] \| Senior Notes [Member]
Changes in Debt Outstanding [Roll Forward]
Repayments of senior notes	$ (12,405)
Senior note, interest rate	3.95%
WES Operating [Member] \| 4.650% Senior Notes due 2026 [Member] \| Senior Notes [Member]
Changes in Debt Outstanding [Roll Forward]
Repayments of senior notes	$ (26,699)
Senior note, interest rate	4.65%
WES Operating [Member] \| 4.500% Senior Notes due 2028 [Member] \| Senior Notes [Member]
Changes in Debt Outstanding [Roll Forward]
Repayments of senior notes	$ (14,159)
Senior note, interest rate	4.50%
WES Operating [Member] \| 4.750% Senior Notes due 2028 [Member] \| Senior Notes [Member]
Changes in Debt Outstanding [Roll Forward]
Repayments of senior notes	$ (46,628)
Senior note, interest rate	4.75%
WES Operating [Member] \| 4.050% Senior Notes due 2030 [Member] \| Senior Notes [Member]
Changes in Debt Outstanding [Roll Forward]
Repayments of senior notes	$ (47,459)
Senior note, interest rate	4.05%
WES Operating [Member] \| Finance Lease Liability [Member]
Changes in Debt Outstanding [Roll Forward]
Finance lease liabilities	$ (251)

Debt and Interest Expense - Int

Debt and Interest Expense - Interest Expense Table (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Debt Instruments [Abstract]
Long-term and short-term debt	$ (93,555)	$ (83,177)	$ (278,361)	$ (249,416)
Finance lease liabilities	(632)	(223)	(1,964)	(616)
Commitment fees and amortization of debt-related costs	(3,244)	(2,904)	(9,929)	(9,199)
Capitalized interest	3,282	3,550	11,077	8,625
Interest expense	$ (94,149)	$ (82,754)	$ (279,177)	$ (250,606)

Debt and Interest Expense - Add

Debt and Interest Expense - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Debt Instrument [Line Items]
Gain (loss) on early extinguishment of debt	$ 0	$ 8,565,000	$ 5,403,000	$ 15,378,000
WES Operating [Member]
Debt Instrument [Line Items]
Gain (loss) on early extinguishment of debt	0	$ 8,565,000	5,403,000	$ 15,378,000
WES Operating [Member] \| RCF [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Facility, maximum borrowing capacity	2,000,000,000		2,000,000,000
Facility, expandable maximum borrowing capacity	2,500,000,000		2,500,000,000
Facility, outstanding borrowings	0		0
Facility, outstanding letters of credit	0		0
Facility, available borrowing capacity	$ 2,000,000,000		$ 2,000,000,000
Facility, interest rate at period end	6.15%	6.62%	6.15%	6.62%
Facility, fee rate			0.20%	0.20%
WES Operating [Member] \| RCF [Member] \| Revolving Credit Facility [Member] \| Non-Extending Lenders [Member]
Debt Instrument [Line Items]
Facility, maximum borrowing capacity	$ 120,000,000		$ 120,000,000
WES Operating [Member] \| Commercial Paper Program \| Commercial Paper Program
Debt Instrument [Line Items]
Principal amount	0		0		$ 613,885,000
Facility, maximum borrowing capacity	$ 2,000,000,000		$ 2,000,000,000
WES Operating [Member] \| Commercial Paper Program \| Commercial Paper Program \| Maximum [Member]
Debt Instrument [Line Items]
Commercial paper, term			397 days
WES Operating [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Repayments of senior notes			$ 150,000,000		276,700,000
Gain (loss) on early extinguishment of debt			$ 5,400,000
WES Operating [Member] \| Senior Notes [Member] \| 3.100% Senior Notes due 2025 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	3.10%		3.10%
Senior note, effective interest rate	3.29%	3.29%	3.29%	3.29%
Principal amount	$ 663,831,000		$ 663,831,000		666,481,000
Repayments of senior notes			$ 2,650,000
WES Operating [Member] \| Senior Notes [Member] \| 4.050% Senior Notes due 2030 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	4.05%		4.05%
Senior note, effective interest rate	4.169%	4.169%	4.169%	4.169%
Principal amount	$ 1,057,134,000		$ 1,057,134,000		1,104,593,000
Repayments of senior notes			$ 47,459,000
WES Operating [Member] \| Senior Notes [Member] \| 5.250% Senior Notes due 2050 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	5.25%		5.25%
Senior note, effective interest rate	5.363%	5.363%	5.363%	5.363%
Principal amount	$ 1,000,000,000		$ 1,000,000,000		1,000,000,000
WES Operating [Member] \| Senior Notes [Member] \| 5.450% Senior Notes due 2034 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	5.45%		5.45%
Principal amount	$ 800,000,000		$ 800,000,000
WES Operating [Member] \| Senior Notes [Member] \| 3.950% Senior Notes due 2025 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	3.95%		3.95%
Principal amount	$ 336,758,000		$ 336,758,000		349,163,000
Repayments of senior notes			$ 12,405,000
WES Operating [Member] \| Senior Notes [Member] \| 6.350% Senior Notes due 2029 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	6.35%		6.35%
Principal amount	$ 600,000,000		$ 600,000,000		600,000,000
WES Operating [Member] \| Senior Notes [Member] \| 6.150% Senior Notes due 2033 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	6.15%		6.15%
Principal amount	$ 750,000,000		$ 750,000,000		$ 750,000,000

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Liability for remediation and reclamation obligations	$ 2.3	$ 7.3
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]	Accrued Liabilities, Current, Other liabilities	Accrued Liabilities, Current, Other liabilities