v3.24.1.u1

Related-Party Transactions - Summary of WES Operating Related-Party Transactions Tables (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Consolidated statements of operations [Abstract] |  |  |  |
General and administrative |  | $ 67,839 | $ 51,117 |
Consolidated balance sheets [Abstract] |  |  |  |
Accounts receivable, net |  | 720,351 |  | $ 666,637
Other current assets |  | 50,750 |  | 52,986
Other assets | [1] | 249,479 |  | 233,455
Accounts and imbalance payables |  | 377,499 |  | 362,451
Accrued liabilities |  | 173,721 |  | 262,572
Consolidated statements of cash flows [Abstract] |  |  |  |
Distributions to WES Operating unitholders | [2] | (223,438) | (196,569) |
Related Parties [Member] |  |  |  |
Consolidated statements of operations [Abstract] |  |  |  |
General and administrative |  | 0 | 67 |
Consolidated balance sheets [Abstract] |  |  |  |
Accounts receivable, net |  | 389,721 |  | 358,141
Other current assets |  | 3,277 |  | 1,260
Other assets |  | 43,534 |  | 43,216
Accounts and imbalance payables |  | 38,739 |  | 38,541
Accrued liabilities |  | 5,009 |  | 4,979
Consolidated statements of cash flows [Abstract] |  |  |  |
Distributions to WES Operating unitholders |  | (111,689) | (99,671) |
WES Operating [Member] |  |  |  |
Consolidated statements of operations [Abstract] |  |  |  |
General and administrative |  | 67,479 | 50,885 |
Consolidated balance sheets [Abstract] |  |  |  |
Accounts receivable, net |  | 738,487 |  | 666,615
Other current assets |  | 48,888 |  | 50,468
Other assets | [3] | 246,053 |  | 231,644
Accounts and imbalance payables |  | 377,358 |  | 392,752
Accrued liabilities |  | 143,026 |  | 203,461
Consolidated statements of cash flows [Abstract] |  |  |  |
Distributions to WES Operating unitholders | [4] | (229,446) | (213,513) |
WES Operating [Member] | Related Parties [Member] |  |  |  |
Consolidated statements of operations [Abstract] |  |  |  |
General and administrative |  | 1,306 | 1,281 |
Consolidated balance sheets [Abstract] |  |  |  |
Accounts receivable, net |  | 407,881 |  | 358,141
Other current assets |  | 3,218 |  | 1,235
Other assets |  | 40,108 |  | 41,405
Accounts and imbalance payables |  | 38,739 |  | 69,472
Accrued liabilities |  | 4,692 |  | $ 4,662
Consolidated statements of cash flows [Abstract] |  |  |  |
Distributions to WES Operating unitholders |  | $ (229,446) | $ (213,513) |
[1] | Other assets includes $5.5 million and $5.7 million of NGLs line-fill inventory as of March 31, 2024, and December 31, 2023, respectively. Other assets also includes $107.1 million and $96.3 million of materials and supplies inventory as of March 31, 2024, and December 31, 2023, respectively.
[2] | Includes related-party amounts. See Note 6.
[3] | Other assets includes $5.5 million and $5.7 million of NGLs line-fill inventory as of March 31, 2024, and December 31, 2023, respectively. Other assets also includes $107.1 million and $96.3 million of materials and supplies inventory as of March 31, 2024, and December 31, 2023, respectively.
[4] | Includes related-party amounts. See Note 6.

X
- Definition Amount, after allowance, receivable from customers, clients, or other third-parties, and receivables classified as other due within one year or the normal operating cycle, if longer. + References No definition available. + Details
Name: | us-gaap_AccountsAndOtherReceivablesNetCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Carrying value as of the balance sheet date of obligations incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483467/210-10-45-8 + Details
Name: | us-gaap_AccountsPayableTradeCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_AccruedLiabilitiesCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(2)(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 + Details
Name: | us-gaap_GeneralAndAdministrativeExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of current assets classified as other. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 852 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481372/852-10-55-10 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(8)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_OtherAssetsCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of noncurrent assets classified as other. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(17)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_OtherAssetsNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-15 + Details
Name: | us-gaap_PaymentsOfDividends
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Consolidated balance sheets + References No definition available. + Details
Name: | wes_ConsolidatedBalanceSheetsAbstract
Namespace Prefix: | wes_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Consolidated statements of cash flows + References No definition available. + Details
Name: | wes_ConsolidatedStatementsOfCashFlowsAbstract
Namespace Prefix: | wes_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Consolidated statements of operations + References No definition available. + Details
Name: | wes_ConsolidatedStatementsOfOperationsAbstract
Namespace Prefix: | wes_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=srt_AffiliatedEntityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=wes_WesternMidstreamOperatingLPMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |