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Related-Party Transactions (Tables)
 9 Months Ended
Sep. 30, 2025
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 
September 30,		Nine Months Ended 
September 30,
thousands2025202420252024
Revenues and other
Service revenues – fee based$566,912 $530,434 $1,667,849 $1,533,251 
Service revenues – product based5,416 13,664 29,529 44,214 
Product sales13,639 1,109 23,238 1,642 
Total revenues and other585,967 545,207 1,720,616 1,579,107 
Equity income, net – related parties (1)
16,847 23,977 64,410 84,227 
Operating expenses
Cost of product (2)
1,332 (14,638)(21,710)(46,685)
Operation and maintenance1,833 2,523 5,314 8,665 
General and administrative— 45 210 299 
Total operating expenses3,165 (12,070)(16,186)(37,721)
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(1)See Note 7.
(2)Includes related-party natural-gas and NGLs imbalances.

Balance sheets
thousandsSeptember 30,
2025		December 31,
2024
Assets
Accounts receivable, net$412,934 $401,315 
Other current assets7,244 6,671 
Equity investments (1)
510,628 541,435 
Other assets34,631 41,641 
Total assets965,437 991,062 
Liabilities
Accounts and imbalance payables32,827 20,609 
Accrued liabilities4,734 4,717 
Other liabilities (2)
597,253 504,415 
Total liabilities634,814 529,741 
_________________________________________________________________________________________
(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 
September 30,
thousands20252024
Distributions from equity-investment earnings – related parties
$69,217 $83,091 
Distributions from equity investments in excess of cumulative earnings – related parties26,000 27,560 
Distributions to Partnership unitholders (1)
(470,929)(451,613)
Distributions to WES Operating unitholders (2)
(21,485)(18,502)
_________________________________________________________________________________________
(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.
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 
September 30,		Nine Months Ended 
September 30,
thousands2025202420252024
General and administrative (1)
$909 $944 $3,465 $3,292 
_________________________________________________________________________________________
(1)Includes an intercompany service fee between the Partnership and WES Operating.

Balance sheets
thousandsSeptember 30,
2025		December 31,
2024
Accounts receivable, net (1)
$433,522 $401,315 
Other current assets6,496 6,263 
Other assets31,541 38,421 
Accounts and imbalance payables (1)
32,827 46,773 
_________________________________________________________________________________________
(1)Includes balances related to transactions between the Partnership and WES Operating.

Statements of cash flows
Nine Months Ended 
September 30,
thousands20252024
Distributions to WES Operating unitholders (1)
$(1,073,936)$(924,796)
_________________________________________________________________________________________
(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.