QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 |
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 |
Commission file number: | State or other jurisdiction of incorporation or organization: | I.R.S. Employer Identification No.: | |
Western Midstream Partners, LP | |||
Western Midstream Operating, LP | |||
Address of principal executive offices: | Zip Code: | Registrant’s telephone number, including area code: | Former Name: | ||||
Western Midstream Partners, LP | |||||||
Western Midstream Operating, LP | |||||||
Title of each class | Trading symbol | Name of exchange on which registered | Common units outstanding as of July 29, 2019: | |
Western Midstream Partners, LP | ||||
Western Midstream Operating, LP | None | None | None | None |
Western Midstream Partners, LP | þ | No | ¨ | |
Western Midstream Operating, LP | þ | No | ¨ | |
Western Midstream Partners, LP | þ | No | ¨ | |
Western Midstream Operating, LP | þ | No | ¨ | |
Western Midstream Partners, LP | Accelerated Filer | Non-accelerated Filer | Smaller Reporting Company | Emerging Growth Company | |
þ | ¨ | ¨ | |||
Western Midstream Operating, LP | Accelerated Filer | Non-accelerated Filer | Smaller Reporting Company | Emerging Growth Company | |
þ | ¨ | ¨ | |||
Western Midstream Partners, LP | ¨ |
Western Midstream Operating, LP | ¨ |
Western Midstream Partners, LP | Yes | No | þ | |
Western Midstream Operating, LP | Yes | No | þ | |
TABLE OF CONTENTS | |||
PAGE | |||
PART I | |||
Item 1. | |||
Item 2. | |||
Item 3. | |||
Item 4. | |||
PART II | |||
Item 1. | |||
Item 1A. | |||
Item 2. | |||
Item 6. | |||
Three Months Ended June 30, | Six Months Ended June 30, | |||||||||||||||
thousands except per-unit amounts | 2019 | 2018 (1) | 2019 | 2018 (1) | ||||||||||||
Revenues and other – affiliates | ||||||||||||||||
Service revenues – fee based | $ | $ | $ | $ | ||||||||||||
Service revenues – product based | ||||||||||||||||
Product sales | ||||||||||||||||
Total revenues and other – affiliates | ||||||||||||||||
Revenues and other – third parties | ||||||||||||||||
Service revenues – fee based | ||||||||||||||||
Service revenues – product based | ||||||||||||||||
Product sales | ||||||||||||||||
Other | ||||||||||||||||
Total revenues and other – third parties | ||||||||||||||||
Total revenues and other | ||||||||||||||||
Equity income, net – affiliates | ||||||||||||||||
Operating expenses | ||||||||||||||||
Cost of product (2) | ||||||||||||||||
Operation and maintenance (2) | ||||||||||||||||
General and administrative (2) | ||||||||||||||||
Property and other taxes | ||||||||||||||||
Depreciation and amortization | ||||||||||||||||
Impairments | ||||||||||||||||
Total operating expenses | ||||||||||||||||
Gain (loss) on divestiture and other, net | ( | ) | ( | ) | ||||||||||||
Operating income (loss) | ||||||||||||||||
Interest income – affiliates | ||||||||||||||||
Interest expense (3) | ( | ) | ( | ) | ( | ) | ( | ) | ||||||||
Other income (expense), net | ( | ) | ( | ) | ||||||||||||
Income (loss) before income taxes | ||||||||||||||||
Income tax expense (benefit) | ||||||||||||||||
Net income (loss) | ||||||||||||||||
Net income (loss) attributable to noncontrolling interests | ( | ) | ||||||||||||||
Net income (loss) attributable to Western Midstream Partners, LP | $ | $ | $ | $ | ||||||||||||
Limited partners’ interest in net income (loss): | ||||||||||||||||
Net income (loss) attributable to Western Midstream Partners, LP | $ | $ | $ | $ | ||||||||||||
Pre-acquisition net (income) loss allocated to Anadarko | ( | ) | ( | ) | ( | ) | ( | ) | ||||||||
Limited partners’ interest in net income (loss) | ||||||||||||||||
Net income (loss) per common unit – basic and diluted | $ | $ | $ | $ | ||||||||||||
Weighted-average common units outstanding – basic and diluted | ||||||||||||||||
(1) | Financial information has been recast to include the financial position and results attributable to AMA. See Note 1 and Note 3. |
(2) | Cost of product includes product purchases from affiliates (as defined in Note 1) of $ |
(3) | Includes affiliate (as defined in Note 1) amounts of $ |
thousands except number of units | June 30, 2019 | December 31, 2018 (1) | ||||||
ASSETS | ||||||||
Current assets | ||||||||
Cash and cash equivalents | $ | $ | ||||||
Accounts receivable, net (2) | ||||||||
Other current assets (3) | ||||||||
Total current assets | ||||||||
Note receivable – Anadarko | ||||||||
Property, plant and equipment | ||||||||
Cost | ||||||||
Less accumulated depreciation | ||||||||
Net property, plant and equipment | ||||||||
Goodwill | ||||||||
Other intangible assets | ||||||||
Equity investments | ||||||||
Other assets (4) | ||||||||
Total assets | $ | $ | ||||||
LIABILITIES, EQUITY AND PARTNERS’ CAPITAL | ||||||||
Current liabilities | ||||||||
Accounts and imbalance payables | $ | $ | ||||||
Short-term debt (5) | ||||||||
Accrued ad valorem taxes | ||||||||
Accrued liabilities | ||||||||
Total current liabilities | ||||||||
Long-term liabilities | ||||||||
Long-term debt | ||||||||
APCWH Note Payable (6) | ||||||||
Deferred income taxes | ||||||||
Asset retirement obligations | ||||||||
Other liabilities (7) | ||||||||
Total long-term liabilities | ||||||||
Total liabilities | ||||||||
Equity and partners’ capital | ||||||||
Common units (453,008,854 and 218,937,797 units issued and outstanding at June 30, 2019, and December 31, 2018, respectively) | ||||||||
Net investment by Anadarko | ||||||||
Total partners’ capital | ||||||||
Noncontrolling interests | ||||||||
Total equity and partners’ capital | ||||||||
Total liabilities, equity and partners’ capital | $ | $ | ||||||
(1) | Financial information has been recast to include the financial position and results attributable to AMA. See Note 1 and Note 3. |
(2) | Accounts receivable, net includes amounts receivable from affiliates (as defined in Note 1) of $ |
(3) | Other current assets includes affiliate amounts of $ |
(4) | Other assets includes affiliate amounts of $ |
(5) | As of June 30, 2019, all amounts are considered affiliate. See Note 11. |
(6) | See Note 1 and Note 6. |
(7) | Other liabilities includes affiliate amounts of $ |
Partners’ Capital | ||||||||||||||||
thousands | Net Investment by Anadarko | Common Units | Noncontrolling Interests | Total | ||||||||||||
Balance at December 31, 2018 (1) | $ | $ | $ | $ | ||||||||||||
Net income (loss) | ||||||||||||||||
Cumulative impact of the Merger transactions (2) | — | ( | ) | |||||||||||||
Above-market component of swap agreements with Anadarko (3) | — | — | ||||||||||||||
WES Operating equity transactions, net (4) | — | ( | ) | |||||||||||||
Distributions to Chipeta noncontrolling interest owner | — | — | ( | ) | ( | ) | ||||||||||
Distributions to noncontrolling interest owners of WES Operating | — | — | ( | ) | ( | ) | ||||||||||
Distributions to Partnership unitholders | — | ( | ) | — | ( | ) | ||||||||||
Acquisitions from affiliates (5) | ( | ) | ( | ) | ||||||||||||
Contributions of equity-based compensation from Anadarko | — | — | ||||||||||||||
Net pre-acquisition contributions from (distributions to) Anadarko | — | — | ||||||||||||||
Adjustments of net deferred tax liabilities | ( | ) | — | |||||||||||||
Other | — | ( | ) | ( | ) | ( | ) | |||||||||
Balance at March 31, 2019 | $ | $ | $ | $ | ||||||||||||
Net income (loss) | ||||||||||||||||
Distributions to Chipeta noncontrolling interest owner | — | — | ( | ) | ( | ) | ||||||||||
Distributions to noncontrolling interest owners of WES Operating | — | — | ( | ) | ( | ) | ||||||||||
Distributions to Partnership unitholders | — | ( | ) | — | ( | ) | ||||||||||
Acquisitions from affiliates (5) | ( | ) | ||||||||||||||
Contributions of equity-based compensation from Anadarko | — | — | ||||||||||||||
Net pre-acquisition contributions from (distributions to) Anadarko | — | — | ||||||||||||||
Other | — | ( | ) | |||||||||||||
Balance at June 30, 2019 | $ | $ | $ | $ | ||||||||||||
(1) | Financial information has been recast to include the financial position and results attributable to AMA. See Note 1 and Note 3. |
(2) | See Note 1. |
(3) | See Note 6. |
(4) | For the three months ended March 31, 2019, the $ |
(5) | The amounts allocated to common unitholders and noncontrolling interests represent a noncash investing activity related to the assets and liabilities assumed in the AMA acquisition. |
Partners’ Capital | ||||||||||||||||
thousands | Net Investment by Anadarko | Common Units | Noncontrolling Interests | Total | ||||||||||||
Balance at December 31, 2017 (1) | $ | $ | $ | $ | ||||||||||||
Cumulative effect of accounting change | ( | ) | ( | ) | ( | ) | ||||||||||
Net income (loss) | ||||||||||||||||
Above-market component of swap agreements with Anadarko (2) | — | — | ||||||||||||||
WES Operating equity transactions, net (3) | — | ( | ) | |||||||||||||
Distributions to Chipeta noncontrolling interest owner | — | — | ( | ) | ( | ) | ||||||||||
Distributions to noncontrolling interest owners of WES Operating | — | — | ( | ) | ( | ) | ||||||||||
Distributions to Partnership unitholders | — | ( | ) | — | ( | ) | ||||||||||
Contributions of equity-based compensation from Anadarko | — | — | ||||||||||||||
Net pre-acquisition contributions from (distributions to) Anadarko | — | — | ||||||||||||||
Adjustments of net deferred tax liabilities | ( | ) | — | — | ( | ) | ||||||||||
Other | — | |||||||||||||||
Balance at March 31, 2018 (1) | $ | $ | $ | $ | ||||||||||||
Cumulative effect of accounting change | — | |||||||||||||||
Net income (loss) | ( | ) | ||||||||||||||
Above-market component of swap agreements with Anadarko (2) | — | — | ||||||||||||||
WES Operating equity transactions, net (3) | — | ( | ) | |||||||||||||
Distributions to Chipeta noncontrolling interest owner | — | — | ( | ) | ( | ) | ||||||||||
Distributions to noncontrolling interest owners of WES Operating | — | — | ( | ) | ( | ) | ||||||||||
Distributions to Partnership unitholders | — | ( | ) | — | ( | ) | ||||||||||
Contributions of equity-based compensation from Anadarko | — | — | ||||||||||||||
Net pre-acquisition contributions from (distributions to) Anadarko | — | — | ||||||||||||||
Other | — | |||||||||||||||
Balance at June 30, 2018 (1) | $ | $ | $ | $ | ||||||||||||
(1) | Financial information has been recast to include the financial position and results attributable to AMA. See Note 1 and Note 3. |
(2) | See Note 6. |
(3) | For the three months ended March 31, 2018 and June 30, 2018, the $ |
Six Months Ended June 30, | ||||||||
thousands | 2019 | 2018 (1) | ||||||
Cash flows from operating activities | ||||||||
Net income (loss) | $ | $ | ||||||
Adjustments to reconcile net income (loss) to net cash provided by operating activities: | ||||||||
Depreciation and amortization | ||||||||
Impairments | ||||||||
Non-cash equity-based compensation expense | ||||||||
Deferred income taxes | ||||||||
Accretion and amortization of long-term obligations, net | ||||||||
Equity income, net – affiliates | ( | ) | ( | ) | ||||
Distributions from equity investment earnings – affiliates | ||||||||
(Gain) loss on divestiture and other, net | ( | ) | ||||||
(Gain) loss on interest-rate swaps | ||||||||
Lower of cost or market inventory adjustments | ||||||||
Changes in assets and liabilities: | ||||||||
(Increase) decrease in accounts receivable, net | ( | ) | ||||||
Increase (decrease) in accounts and imbalance payables and accrued liabilities, net | ( | ) | ||||||
Change in other items, net | ||||||||
Net cash provided by operating activities | ||||||||
Cash flows from investing activities | ||||||||
Capital expenditures | ( | ) | ( | ) | ||||
Acquisitions from affiliates | ( | ) | ||||||
Acquisitions from third parties | ( | ) | ( | ) | ||||
Investments in equity affiliates | ( | ) | ( | ) | ||||
Distributions from equity investments in excess of cumulative earnings – affiliates | ||||||||
Proceeds from the sale of assets to third parties | ||||||||
Net cash used in investing activities | ( | ) | ( | ) | ||||
Cash flows from financing activities | ||||||||
Borrowings, net of debt issuance costs (2) | ||||||||
Repayments of debt (3) | ( | ) | ( | ) | ||||
Increase (decrease) in outstanding checks | ( | ) | ( | ) | ||||
Registration expenses related to the issuance of Partnership common units | ( | ) | ||||||
Distributions to Partnership unitholders (4) | ( | ) | ( | ) | ||||
Distributions to Chipeta noncontrolling interest owner | ( | ) | ( | ) | ||||
Distributions to noncontrolling interest owners of WES Operating | ( | ) | ( | ) | ||||
Net contributions from (distributions to) Anadarko | ||||||||
Above-market component of swap agreements with Anadarko (4) | ||||||||
Net cash provided by (used in) financing activities | ||||||||
Net increase (decrease) in cash and cash equivalents | ( | ) | ||||||
Cash and cash equivalents at beginning of period | ||||||||
Cash and cash equivalents at end of period | $ | $ | ||||||
Supplemental disclosures | ||||||||
Interest paid, net of capitalized interest | $ | $ | ||||||
Taxes paid (reimbursements received) | ( | ) | ||||||
Accrued capital expenditures | ||||||||
(1) | Financial information has been recast to include the financial position and results attributable to AMA. See Note 1 and Note 3. |
(2) |
(3) | For the six months ended June 30, 2019, includes a $ |
(4) | See Note 6. |
Three Months Ended June 30, | Six Months Ended June 30, | |||||||||||||||
thousands except per-unit amounts | 2019 | 2018 (1) | 2019 | 2018 (1) | ||||||||||||
Revenues and other – affiliates | ||||||||||||||||
Service revenues – fee based | $ | $ | $ | $ | ||||||||||||
Service revenues – product based | ||||||||||||||||
Product sales | ||||||||||||||||
Total revenues and other – affiliates | ||||||||||||||||
Revenues and other – third parties | ||||||||||||||||
Service revenues – fee based | ||||||||||||||||
Service revenues – product based | ||||||||||||||||
Product sales | ||||||||||||||||
Other | ||||||||||||||||
Total revenues and other – third parties | ||||||||||||||||
Total revenues and other | ||||||||||||||||
Equity income, net – affiliates | ||||||||||||||||
Operating expenses | ||||||||||||||||
Cost of product (2) | ||||||||||||||||
Operation and maintenance (2) | ||||||||||||||||
General and administrative (2) | ||||||||||||||||
Property and other taxes | ||||||||||||||||
Depreciation and amortization | ||||||||||||||||
Impairments | ||||||||||||||||
Total operating expenses | ||||||||||||||||
Gain (loss) on divestiture and other, net | ( | ) | ( | ) | ||||||||||||
Operating income (loss) | ||||||||||||||||
Interest income – affiliates | ||||||||||||||||
Interest expense (3) | ( | ) | ( | ) | ( | ) | ( | ) | ||||||||
Other income (expense), net | ( | ) | ( | ) | ||||||||||||
Income (loss) before income taxes | ||||||||||||||||
Income tax expense (benefit) | ||||||||||||||||
Net income (loss) | ||||||||||||||||
Net income attributable to noncontrolling interest | ||||||||||||||||
Net income (loss) attributable to Western Midstream Operating, LP | $ | $ | $ | $ | ||||||||||||
Limited partners’ interest in net income (loss): | ||||||||||||||||
Net income (loss) attributable to Western Midstream Operating, LP | $ | $ | $ | $ | ||||||||||||
Pre-acquisition net (income) loss allocated to Anadarko | ( | ) | ( | ) | ( | ) | ( | ) | ||||||||
General partner interest in net (income) loss (4) | ( | ) | ( | ) | ||||||||||||
Common and Class C limited partners’ interest in net income (loss) (4) | ( | ) | ||||||||||||||
Net income (loss) per common unit – basic and diluted (4) | N/A | $ | ( | ) | N/A | $ | ||||||||||
(1) | Financial information has been recast to include the financial position and results attributable to AMA. See Note 1 and Note 3. |
(2) | Cost of product includes product purchases from affiliates (as defined in Note 1) of $ |
(3) | Includes affiliate (as defined in Note 1) amounts of $ |
(4) | See Note 5 for the calculation of net income (loss) per common unit. |
thousands except number of units | June 30, 2019 | December 31, 2018 (1) | ||||||
ASSETS | ||||||||
Current assets | ||||||||
Cash and cash equivalents | $ | $ | ||||||
Accounts receivable, net (2) | ||||||||
Other current assets (3) | ||||||||
Total current assets | ||||||||
Note receivable – Anadarko | ||||||||
Property, plant and equipment | ||||||||
Cost | ||||||||
Less accumulated depreciation | ||||||||
Net property, plant and equipment | ||||||||
Goodwill | ||||||||
Other intangible assets | ||||||||
Equity investments | ||||||||
Other assets (4) | ||||||||
Total assets | $ | $ | ||||||
LIABILITIES, EQUITY AND PARTNERS’ CAPITAL | ||||||||
Current liabilities | ||||||||
Accounts and imbalance payables | $ | $ | ||||||
Short-term debt (5) | ||||||||
Accrued ad valorem taxes | ||||||||
Accrued liabilities | ||||||||
Total current liabilities | ||||||||
Long-term liabilities | ||||||||
Long-term debt | ||||||||
APCWH Note Payable (6) | ||||||||
Deferred income taxes | ||||||||
Asset retirement obligations | ||||||||
Other liabilities (7) | ||||||||
Total long-term liabilities | ||||||||
Total liabilities | ||||||||
Equity and partners’ capital | ||||||||
Common units (318,675,578 and 152,609,285 units issued and outstanding at June 30, 2019, and December 31, 2018, respectively) | ||||||||
Class C units (zero and 14,372,665 units issued and outstanding at June 30, 2019, and December 31, 2018, respectively) (8) | ||||||||
General partner units (zero and 2,583,068 units issued and outstanding at June 30, 2019, and December 31, 2018, respectively) (8) | ||||||||
Net investment by Anadarko | ||||||||
Total partners’ capital | ||||||||
Noncontrolling interest | ||||||||
Total equity and partners’ capital | ||||||||
Total liabilities, equity and partners’ capital | $ | $ | ||||||
(1) | Financial information has been recast to include the financial position and results attributable to AMA. See Note 1 and Note 3. |
(2) | Accounts receivable, net includes amounts receivable from affiliates (as defined in Note 1) of $ |
(3) | Other current assets includes affiliate amounts of $ |
(4) | Other assets includes affiliate amounts of $ |
(5) | As of June 30, 2019, all amounts are considered affiliate. See Note 11. |
(6) | See Note 1 and Note 6. |
(7) | Other liabilities includes affiliate amounts of $ |
(8) | Immediately prior to the closing of the Merger (as defined in Note 1), all outstanding general partner units converted into a non-economic general partner interest in WES Operating and WES Operating common units and all outstanding Class C units converted into WES Operating common units on a |
Partners’ Capital | ||||||||||||||||||||||||
thousands | Net Investment by Anadarko | Common Units | Class C Units | General Partner Units | Noncontrolling Interest | Total | ||||||||||||||||||
Balance at December 31, 2018 (1) | $ | $ | $ | $ | $ | $ | ||||||||||||||||||
Net income (loss) | ||||||||||||||||||||||||
Cumulative impact of the Merger transactions (2) | — | ( | ) | ( | ) | — | ||||||||||||||||||
Above-market component of swap agreements with Anadarko (3) | — | — | — | — | ||||||||||||||||||||
Amortization of beneficial conversion feature of Class C units | — | ( | ) | — | — | |||||||||||||||||||
Distributions to Chipeta noncontrolling interest owner | — | — | — | — | ( | ) | ( | ) | ||||||||||||||||
Distributions to WES Operating unitholders | — | ( | ) | — | ( | ) | — | ( | ) | |||||||||||||||
Acquisitions from affiliates (4) | ( | ) | — | — | — | ( | ) | |||||||||||||||||
Contributions of equity-based compensation from Anadarko | — | — | — | |||||||||||||||||||||
Net pre-acquisition contributions from (distributions to) Anadarko | — | — | — | — | ||||||||||||||||||||
Adjustments of net deferred tax liabilities | ( | ) | — | — | — | |||||||||||||||||||
Other | — | — | — | — | ||||||||||||||||||||
Balance at March 31, 2019 | $ | $ | $ | $ | $ | $ | ||||||||||||||||||
Net income (loss) | — | — | ||||||||||||||||||||||
Distributions to Chipeta noncontrolling interest owner | — | — | — | — | ( | ) | ( | ) | ||||||||||||||||
Distributions to WES Operating unitholders | — | ( | ) | — | — | — | ( | ) | ||||||||||||||||
Acquisitions from affiliates (4) | ( | ) | — | — | — | |||||||||||||||||||
Contributions of equity-based compensation from Anadarko | — | — | — | — | ||||||||||||||||||||
Net pre-acquisition contributions from (distributions to) Anadarko | — | — | — | — | ||||||||||||||||||||
Balance at June 30, 2019 | $ | $ | $ | $ | $ | $ | ||||||||||||||||||
(1) | Financial information has been recast to include the financial position and results attributable to AMA. See Note 1 and Note 3. |
(2) |
(3) | See Note 6. |
(4) | The amount allocated to common unitholders represents a noncash investing activity related to the assets and liabilities assumed in the AMA acquisition. |
Partners’ Capital | ||||||||||||||||||||||||
thousands | Net Investment by Anadarko | Common Units | Class C Units | General Partner Units | Noncontrolling Interest | Total | ||||||||||||||||||
Balance at December 31, 2017 (1) | $ | $ | $ | $ | $ | $ | ||||||||||||||||||
Cumulative effect of accounting change | ( | ) | ( | ) | ( | ) | ( | ) | ||||||||||||||||
Net income (loss) | ||||||||||||||||||||||||
Above-market component of swap agreements with Anadarko (2) | — | — | — | — | ||||||||||||||||||||
Amortization of beneficial conversion feature of Class C units | — | ( | ) | — | — | |||||||||||||||||||
Distributions to Chipeta noncontrolling interest owner | — | — | — | — | ( | ) | ( | ) | ||||||||||||||||
Distributions to WES Operating unitholders | — | ( | ) | — | ( | ) | — | ( | ) | |||||||||||||||
Contributions of equity-based compensation from Anadarko | — | — | — | |||||||||||||||||||||
Net pre-acquisition contributions from (distributions to) Anadarko | — | — | — | — | ||||||||||||||||||||
Adjustments of net deferred tax liabilities | ( | ) | — | — | — | — | ( | ) | ||||||||||||||||
Other | — | — | — | — | ||||||||||||||||||||
Balance at March 31, 2018 (1) | $ | $ | $ | $ | $ | $ | ||||||||||||||||||
Cumulative effect of accounting change | — | — | — | |||||||||||||||||||||
Net income (loss) | ( | ) | ( | ) | ||||||||||||||||||||
Above-market component of swap agreements with Anadarko (2) | — | — | — | — | ||||||||||||||||||||
Amortization of beneficial conversion feature of Class C units | — | ( | ) | — | — | |||||||||||||||||||
Distributions to Chipeta noncontrolling interest owner | — | — | — | — | ( | ) | ( | ) | ||||||||||||||||
Distributions to WES Operating unitholders | — | ( | ) | — | ( | ) | — | ( | ) | |||||||||||||||
Contributions of equity-based compensation from Anadarko | — | — | — | |||||||||||||||||||||
Net pre-acquisition contributions from (distributions to) Anadarko | — | — | — | — | ||||||||||||||||||||
Other | — | — | — | — | ||||||||||||||||||||
Balance at June 30, 2018 (1) | $ | $ | $ | $ | $ | $ | ||||||||||||||||||
(1) | Financial information has been recast to include the financial position and results attributable to AMA. See Note 1 and Note 3. |
(2) | See Note 6. |
Six Months Ended June 30, | ||||||||
thousands | 2019 | 2018 (1) | ||||||
Cash flows from operating activities | ||||||||
Net income (loss) | $ | $ | ||||||
Adjustments to reconcile net income (loss) to net cash provided by operating activities: | ||||||||
Depreciation and amortization | ||||||||
Impairments | ||||||||
Non-cash equity-based compensation expense | ||||||||
Deferred income taxes | ||||||||
Accretion and amortization of long-term obligations, net | ||||||||
Equity income, net – affiliates | ( | ) | ( | ) | ||||
Distributions from equity investment earnings – affiliates | ||||||||
(Gain) loss on divestiture and other, net | ( | ) | ||||||
(Gain) loss on interest-rate swaps | ||||||||
Lower of cost or market inventory adjustments | ||||||||
Changes in assets and liabilities: | ||||||||
(Increase) decrease in accounts receivable, net | ( | ) | ||||||
Increase (decrease) in accounts and imbalance payables and accrued liabilities, net | ( | ) | ||||||
Change in other items, net | ||||||||
Net cash provided by operating activities | ||||||||
Cash flows from investing activities | ||||||||
Capital expenditures | ( | ) | ( | ) | ||||
Acquisitions from affiliates | ( | ) | ||||||
Acquisitions from third parties | ( | ) | ( | ) | ||||
Investments in equity affiliates | ( | ) | ( | ) | ||||
Distributions from equity investments in excess of cumulative earnings – affiliates | ||||||||
Proceeds from the sale of assets to third parties | ||||||||
Net cash used in investing activities | ( | ) | ( | ) | ||||
Cash flows from financing activities | ||||||||
Borrowings, net of debt issuance costs (2) | ||||||||
Repayments of debt (3) | ( | ) | ( | ) | ||||
Increase (decrease) in outstanding checks | ( | ) | ( | ) | ||||
Distributions to WES Operating unitholders (4) | ( | ) | ( | ) | ||||
Distributions to Chipeta noncontrolling interest owner | ( | ) | ( | ) | ||||
Net contributions from (distributions to) Anadarko | ||||||||
Above-market component of swap agreements with Anadarko (4) | ||||||||
Net cash provided by (used in) financing activities | ||||||||
Net increase (decrease) in cash and cash equivalents | ( | ) | ||||||
Cash and cash equivalents at beginning of period | ||||||||
Cash and cash equivalents at end of period | $ | $ | ||||||
Supplemental disclosures | ||||||||
Interest paid, net of capitalized interest | $ | $ | ||||||
Taxes paid (reimbursements received) | ( | ) | ||||||
Accrued capital expenditures | ||||||||
(1) | Financial information has been recast to include the financial position and results attributable to AMA. See Note 1 and Note 3. |
(2) | For the six months ended June 30, 2019 and 2018, includes $ |
(3) | For the six months ended June 30, 2019, includes a $ |
(4) | See Note 6. |
Owned and Operated | Operated Interests | Non-Operated Interests | Equity Interests | |||||||||
Gathering systems (1) | ||||||||||||
Treating facilities | — | |||||||||||
Natural gas processing plants/trains | — | |||||||||||
NGLs pipelines | — | — | ||||||||||
Natural gas pipelines | — | — | ||||||||||
Oil pipelines | — | |||||||||||
(1) | Includes the DBM water systems. |
Percentage Interest | |||
Equity investments (1) | |||
Fort Union | % | ||
White Cliffs | % | ||
Rendezvous | % | ||
Mont Belvieu JV | % | ||
TEP | % | ||
TEG | % | ||
FRP | % | ||
Whitethorn LLC | % | ||
Cactus II | % | ||
Saddlehorn | % | ||
Panola | % | ||
Mi Vida | % | ||
Ranch Westex | % | ||
Red Bluff Express | % | ||
Proportionate consolidation (2) | |||
Marcellus Interest systems | % | ||
Springfield system | % | ||
Full consolidation | |||
Chipeta (3) | % | ||
(1) | Investments in non-controlled entities over which the Partnership exercises significant influence are accounted for under the equity method. “Equity investment throughput” refers to the Partnership’s share of average throughput for these investments. |
(2) | The Partnership proportionately consolidates its associated share of the assets, liabilities, revenues and expenses attributable to these assets. |
(3) | The |
Three Months Ended June 30, | Six Months Ended June 30, | |||||||||||||||
thousands | 2019 | 2018 | 2019 | 2018 | ||||||||||||
Revenue from customers | ||||||||||||||||
Service revenues – fee based | $ | $ | $ | $ | ||||||||||||
Service revenues – product based | ||||||||||||||||
Product sales | ||||||||||||||||
Total revenue from customers | ||||||||||||||||
Revenue from other than customers | ||||||||||||||||
Net gains (losses) on commodity price swap agreements | ( | ) | ( | ) | ( | ) | ||||||||||
Other | ||||||||||||||||
Total revenues and other | $ | $ | $ | $ | ||||||||||||
thousands | ||||
Balance at December 31, 2018 | $ | |||
Amounts transferred to Accounts receivable, net that were included in the contract assets balance at the beginning of the period | ( | ) | ||
Additional estimated revenues recognized | ||||
Balance at June 30, 2019 | $ | |||
Contract assets at June 30, 2019 | ||||
Other current assets | $ | |||
Other assets | ||||
Total contract assets from contracts with customers | $ | |||
thousands | ||||
Balance at December 31, 2018 | $ | |||
Cash received or receivable, excluding revenues recognized during the period | ||||
Revenues recognized that were included in the contract liability balance at the beginning of the period | ( | ) | ||
Balance at June 30, 2019 | $ | |||
Contract liabilities at June 30, 2019 | ||||
Accrued liabilities | $ | |||
Other liabilities | ||||
Total contract liabilities from contracts with customers | $ | |||
thousands | ||||
Remainder of 2019 | $ | |||
2020 | ||||
2021 | ||||
2022 | ||||
2023 | ||||
Thereafter | ||||
Total | $ | |||
• | Wattenberg processing plant. The Wattenberg processing plant consists of a cryogenic train (with capacity of |
• | Wamsutter pipeline. The Wamsutter pipeline is a crude oil gathering pipeline located in Sweetwater County, Wyoming and delivers crude oil into Andeavor’s Wamsutter Pipeline System. |
• | DJ Basin oil system. The DJ Basin oil system consists of (i) a crude oil gathering system, (ii) a centralized oil stabilization facility (“COSF”) and (iii) a |
• | DBM oil system. The DBM oil system consists of (i) a crude oil gathering system, (ii) three central production facilities (“CPFs”), which include ten processing trains with total capacity of |
• | APC water systems. The APC water systems consist of five produced-water disposal systems with total capacity of |
• | A |
• | A |
• | A |
• | A |
Three Months Ended June 30, 2018 | ||||||||||||||||
thousands | Partnership Historical (1) | AMA | Eliminations | Combined | ||||||||||||
Revenues and other | $ | $ | $ | ( | ) | $ | ||||||||||
Equity income, net – affiliates | ||||||||||||||||
Net income (loss) | ||||||||||||||||
Six Months Ended June 30, 2018 | ||||||||||||||||
thousands | Partnership Historical (1) | AMA | Eliminations | Combined | ||||||||||||
Revenues and other | $ | $ | $ | ( | ) | $ | ||||||||||
Equity income, net – affiliates | ||||||||||||||||
Net income (loss) | ||||||||||||||||
Three Months Ended June 30, 2018 | ||||||||||||||||
thousands | WES Operating Historical (1) | AMA | Eliminations | Combined | ||||||||||||
Revenues and other | $ | $ | $ | ( | ) | $ | ||||||||||
Equity income, net – affiliates | ||||||||||||||||
Net income (loss) | ||||||||||||||||
Six Months Ended June 30, 2018 | ||||||||||||||||
thousands | WES Operating Historical (1) | AMA | Eliminations | Combined | ||||||||||||
Revenues and other | $ | $ | $ | ( | ) | $ | ||||||||||
Equity income, net – affiliates | ||||||||||||||||
Net income (loss) | ||||||||||||||||
(1) | See Adjustments to previously issued financial statements within Note 1. |
thousands except per-unit amounts Quarters Ended | Total Quarterly Distribution per Unit | Total Quarterly Cash Distribution | Date of Distribution | ||||||||
2018 (1) | |||||||||||
March 31 | $ | $ | May 2018 | ||||||||
June 30 | August 2018 | ||||||||||
September 30 | November 2018 | ||||||||||
December 31 | February 2019 | ||||||||||
2019 | |||||||||||
March 31 | $ | $ | May 2019 | ||||||||
June 30 (2) | August 2019 | ||||||||||
(1) | The 2018 distributions were declared and paid prior to the closing of the Merger. |
(2) | The Board of Directors declared a cash distribution to the Partnership’s unitholders for the second quarter of 2019 of $ |
thousands except per-unit amounts Quarters Ended | Total Quarterly Distribution per Unit | Total Quarterly Cash Distribution | Date of Distribution | ||||||||
2018 | |||||||||||
March 31 | $ | $ | May 2018 | ||||||||
June 30 | August 2018 | ||||||||||
September 30 | November 2018 | ||||||||||
December 31 | February 2019 | ||||||||||
Partnership common units outstanding prior to the Merger | |||||
WES Operating common units outstanding prior to the Merger | |||||
WES Operating Class C units outstanding prior to the Merger | |||||
Less: WES Operating common units owned by the Partnership | ( | ) | |||
WES Operating common units subject to conversion into Partnership common units | |||||
Exchange ratio per unit | |||||
Partnership common units issued for WES Operating common units (1) | |||||
WES Operating common units issued as part of the AMA acquisition | |||||
Less: WES Operating common units retained by a subsidiary of Anadarko | ( | ) | |||
WES Operating acquisition common units subject to conversion into Partnership common units | |||||
Conversion ratio per unit | |||||
Partnership common units issued for WES Operating acquisition common units | |||||
Partnership common units outstanding at February 28, 2019 | |||||
(1) | Total Partnership units issued upon consummation of the Merger exceeds the calculation of such units using the exchange ratio due to the rounding convention reflected in the Merger Agreement. |
Common Units | Class C Units | General Partner Units | Total | |||||||||
Balance at December 31, 2018 | ||||||||||||
PIK Class C units | — | — | ||||||||||
Conversion of Class C units | ( | ) | — | |||||||||
IDR and General partner unit conversion | — | ( | ) | |||||||||
Units issued as part of the AMA acquisition | — | — | ||||||||||
Balance at June 30, 2019 (1) | ||||||||||||
(1) | All WES Operating common units that converted into WES common units upon closing of the Merger were canceled and an equivalent amount of the canceled WES Operating common units were issued to WES. See Note 1 for further details on the units issued and converted in connection with the closing of the Merger. |
Three Months Ended June 30, | Six Months Ended June 30, | |||||||
thousands except per-unit amounts | 2018 | 2018 | ||||||
Net income (loss) attributable to Western Midstream Operating, LP | $ | $ | ||||||
Pre-acquisition net (income) loss allocated to Anadarko | ( | ) | ( | ) | ||||
General partner interest in net (income) loss | ( | ) | ( | ) | ||||
Common and Class C limited partners’ interest in net income (loss) | $ | ( | ) | $ | ||||
Net income (loss) allocable to common units (1) | $ | ( | ) | $ | ||||
Net income (loss) allocable to Class C units (1) | ( | ) | ||||||
Common and Class C limited partners’ interest in net income (loss) | $ | ( | ) | $ | ||||
Net income (loss) per unit | ||||||||
Common units – basic and diluted (2) | $ | ( | ) | $ | ||||
Weighted-average units outstanding | ||||||||
Common units – basic and diluted | ||||||||
Excluded due to anti-dilutive effect: | ||||||||
Class C units (2) | ||||||||
(1) | Adjusted to reflect amortization of the beneficial conversion feature. |
(2) | The impact of Class C units would be anti-dilutive for the periods presented. |
DJ Basin Complex | ||||||||
per barrel except natural gas | 2018 Swap Prices | 2018 Market Prices (1) | ||||||
Ethane | $ | $ | ||||||
Propane | ||||||||
Isobutane | ||||||||
Normal butane | ||||||||
Natural gasoline | ||||||||
Condensate | ||||||||
Natural gas (per MMBtu) | ||||||||
MGR Assets | ||||||||
per barrel except natural gas | 2018 Swap Prices | 2018 Market Prices (1) | ||||||
Ethane | $ | $ | ||||||
Propane | ||||||||
Isobutane | ||||||||
Normal butane | ||||||||
Natural gasoline | ||||||||
Condensate | ||||||||
Natural gas (per MMBtu) | ||||||||
(1) | Represents the New York Mercantile Exchange forward strip price as of December 20, 2017, for the 2018 Market Prices, adjusted for product specification, location, basis and, in the case of NGLs, transportation and fractionation costs. |
Three Months Ended June 30, | Six Months Ended June 30, | |||||||||||||||
thousands | 2019 | 2018 | 2019 | 2018 | ||||||||||||
Revenues and other (1) | $ | $ | $ | $ | ||||||||||||
Equity income, net – affiliates (1) | ||||||||||||||||
Cost of product (1) | ||||||||||||||||
Operation and maintenance (1) | ||||||||||||||||
General and administrative (2) | ||||||||||||||||
Operating expenses | ||||||||||||||||
Interest income (3) | ||||||||||||||||
Interest expense (4) | ||||||||||||||||
APCWH Note Payable borrowings (5) | ||||||||||||||||
Repayment of APCWH Note Payable (5) | ||||||||||||||||
Distributions to Partnership unitholders (6) | ||||||||||||||||
Distributions to WES Operating unitholders (7) | ||||||||||||||||
Above-market component of swap agreements with Anadarko | ||||||||||||||||
(1) | Represents amounts earned or incurred on and subsequent to the date of the acquisition of Partnership assets, as well as amounts earned or incurred by Anadarko on a historical basis related to the Partnership assets prior to the acquisition of such assets. |
(2) | Represents general and administrative expense incurred on and subsequent to the date of the acquisition of Partnership assets, as well as a management services fee for expenses incurred by Anadarko for periods prior to the acquisition of such assets. These amounts include equity-based compensation expense allocated to the Partnership by Anadarko (see LTIPs and Anadarko Incentive Plan within this Note 6) and amounts charged by Anadarko under the omnibus agreements of the Partnership and WES Operating. |
(3) | Represents interest income recognized on the note receivable from Anadarko. |
(4) | See Note 10. |
(5) | See Note 1. |
(6) | Represents distributions paid to Anadarko under the partnership agreement of the Partnership (see Note 4 and Note 5). |
(7) | Represents distributions paid to other subsidiaries of Anadarko under WES Operating’s partnership agreement (see Note 4 and Note 5). |
Three Months Ended June 30, | Six Months Ended June 30, | |||||||||||||||
thousands | 2019 | 2018 | 2019 | 2018 | ||||||||||||
General and administrative (1) | $ | $ | $ | $ | ||||||||||||
Distributions to WES Operating unitholders (2) | ||||||||||||||||
(1) | Represents general and administrative expense incurred on and subsequent to the date of the acquisition of Partnership assets, as well as a management services fee for expenses incurred by Anadarko for periods prior to the acquisition of such assets. These amounts include equity-based compensation expense allocated to WES Operating by Anadarko (see LTIPs and Anadarko Incentive Plan within this Note 6) and amounts charged by Anadarko under the omnibus agreement of WES Operating. |
(2) | Represents distributions paid to the Partnership and other subsidiaries of Anadarko under WES Operating’s partnership agreement (see Note 4 and Note 5). For the six months ended June 30, 2019, includes distributions to the Partnership and a subsidiary of Anadarko related to the repayment of the WGP RCF (see Note 10). |
thousands | Estimated Useful Life | June 30, 2019 | December 31, 2018 | |||||||
Land | n/a | $ | $ | |||||||
Gathering systems – pipelines | ||||||||||
Gathering systems – compressors | ||||||||||
Processing complexes and treating facilities | ||||||||||
Transportation pipeline and equipment | 6 to 45 years | |||||||||
Produced water disposal systems | ||||||||||
Assets under construction | n/a | |||||||||
Other | 3 to 40 years | |||||||||
Total property, plant and equipment | ||||||||||
Less accumulated depreciation | ||||||||||
Net property, plant and equipment | $ | $ | ||||||||
thousands | Balance at December 31, 2018 | Acquisitions | Equity income, net | Contributions (1) | Distributions | Distributions in excess of cumulative earnings (2) | Balance at June 30, 2019 | |||||||||||||||||||||
Fort Union | $ | $ | $ | ( | ) | $ | $ | $ | ( | ) | $ | |||||||||||||||||
White Cliffs | ( | ) | ( | ) | ||||||||||||||||||||||||
Rendezvous | ( | ) | ( | ) | ||||||||||||||||||||||||
Mont Belvieu JV | ( | ) | ( | ) | ||||||||||||||||||||||||
TEG | ( | ) | ( | ) | ||||||||||||||||||||||||
TEP | ( | ) | ||||||||||||||||||||||||||
FRP | ( | ) | ||||||||||||||||||||||||||
Whitethorn LLC | ( | ) | ( | ) | ||||||||||||||||||||||||
Cactus II | ||||||||||||||||||||||||||||
Saddlehorn | ( | ) | ||||||||||||||||||||||||||
Panola | ( | ) | ( | ) | ||||||||||||||||||||||||
Mi Vida | ( | ) | ( | ) | ||||||||||||||||||||||||
Ranch Westex | ( | ) | ( | ) | ||||||||||||||||||||||||
Red Bluff Express | ( | ) | ( | ) | ||||||||||||||||||||||||
Total | $ | $ | $ | $ | $ | ( | ) | $ | ( | ) | $ | |||||||||||||||||
(1) | Includes capitalized interest of $ |
(2) | 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. |
The Partnership | WES Operating | |||||||||||||||
thousands | June 30, 2019 | December 31, 2018 | June 30, 2019 | December 31, 2018 | ||||||||||||
Trade receivables, net | $ | $ | $ | $ | ||||||||||||
Other receivables, net | ||||||||||||||||
Total accounts receivable, net | $ | $ | $ | $ | ||||||||||||
The Partnership | WES Operating | |||||||||||||||
thousands | June 30, 2019 | December 31, 2018 | June 30, 2019 | December 31, 2018 | ||||||||||||
NGLs inventory | $ | $ | $ | $ | ||||||||||||
Imbalance receivables | ||||||||||||||||
Prepaid insurance | ||||||||||||||||
Contract assets | ||||||||||||||||
Other | ||||||||||||||||
Total other current assets | $ | $ | $ | $ | ||||||||||||
The Partnership | WES Operating | |||||||||||||||
thousands | June 30, 2019 | December 31, 2018 | June 30, 2019 | December 31, 2018 | ||||||||||||
Accrued interest expense | $ | $ | $ | $ | ||||||||||||
Short-term asset retirement obligations | ||||||||||||||||
Short-term remediation and reclamation obligations | ||||||||||||||||
Income taxes payable | ||||||||||||||||
Contract liabilities | ||||||||||||||||
Other (1) | ||||||||||||||||
Total accrued liabilities | $ | $ | $ | $ | ||||||||||||
(1) | Includes amounts related to WES Operating’s interest-rate swaps as of June 30, 2019 and December 31, 2018 (see Note 10). Includes lease liabilities related to the implementation of ASU 2016-02, Leases (Topic 842) as of June 30, 2019 (see Note 1). |
June 30, 2019 | December 31, 2018 | |||||||||||||||||||||||
thousands | Principal | Carrying Value | Fair Value (1) | Principal | Carrying Value | Fair Value (1) | ||||||||||||||||||
Short-term debt | ||||||||||||||||||||||||
WGP RCF | $ | $ | $ | $ | $ | $ | ||||||||||||||||||
Finance lease liabilities (2) | ||||||||||||||||||||||||
Total short-term debt | $ | $ | $ | $ | $ | $ | ||||||||||||||||||
Long-term debt | ||||||||||||||||||||||||
5.375% Senior Notes due 2021 | $ | $ | $ | $ | $ | $ | ||||||||||||||||||
4.000% Senior Notes due 2022 | ||||||||||||||||||||||||
3.950% Senior Notes due 2025 | ||||||||||||||||||||||||
4.650% Senior Notes due 2026 | ||||||||||||||||||||||||
4.500% Senior Notes due 2028 | ||||||||||||||||||||||||
4.750% Senior Notes due 2028 | ||||||||||||||||||||||||
5.450% Senior Notes due 2044 | ||||||||||||||||||||||||
5.300% Senior Notes due 2048 | ||||||||||||||||||||||||
5.500% Senior Notes due 2048 | ||||||||||||||||||||||||
RCF | ||||||||||||||||||||||||
Term loan facility | ||||||||||||||||||||||||
APCWH Note Payable | ||||||||||||||||||||||||
Total long-term debt | $ | $ | $ | $ | $ | $ | ||||||||||||||||||
(1) | Fair value is measured using the market approach and Level 2 inputs. |
(2) | Amounts are considered affiliate. See Note 11. |
thousands | Carrying Value | |||
Balance at December 31, 2018 | $ | |||
RCF borrowings | ||||
Term loan facility borrowings | ||||
APCWH Note Payable borrowings | ||||
Finance lease liabilities | ||||
Repayment of WGP RCF borrowings | ( | ) | ||
Repayment of APCWH Note Payable | ( | ) | ||
Other | ||||
Balance at June 30, 2019 | $ | |||
Notional Principal Amount | Reference Period | Mandatory Termination Date | Weighted-Average Interest Rate | |||
$ | December 2019 - 2024 | December 2019 | ||||
$ | December 2019 - 2029 | December 2019 | ||||
$ | December 2019 - 2049 | December 2019 | ||||
Three Months Ended June 30, | Six Months Ended June 30, | |||||||||||||||
thousands | 2019 | 2018 | 2019 | 2018 | ||||||||||||
Third parties | ||||||||||||||||
Long-term and short-term debt | $ | ( | ) | $ | ( | ) | $ | ( | ) | $ | ( | ) | ||||
Amortization of debt issuance costs and commitment fees | ( | ) | ( | ) | ( | ) | ( | ) | ||||||||
Capitalized interest | ||||||||||||||||
Total interest expense – third parties | ( | ) | ( | ) | ( | ) | ( | ) | ||||||||
Affiliates | ||||||||||||||||
APCWH Note Payable | ( | ) | ( | ) | ( | ) | ||||||||||
Finance lease liabilities | ( | ) | ( | ) | ||||||||||||
Total interest expense – affiliates | ( | ) | ( | ) | ( | ) | ( | ) | ||||||||
Interest expense | $ | ( | ) | $ | ( | ) | $ | ( | ) | $ | ( | ) | ||||
thousands except lease term and discount rate | Operating Leases | Finance Leases | ||||||
Assets | ||||||||
Other assets | $ | $ | — | |||||
Net property, plant and equipment | — | |||||||
Total lease assets (1) | $ | $ | ||||||
Liabilities | ||||||||
Accrued liabilities | $ | $ | — | |||||
Short-term debt | — | |||||||
Other liabilities | — | |||||||
Total lease liabilities (1) | $ | $ | ||||||
Weighted-average remaining lease term (years) | ||||||||
Weighted-average discount rate | % | % | ||||||
(1) | Includes additions to ROU assets and lease liabilities of $ |
thousands | Three Months Ended June 30, 2019 | Six Months Ended June 30, 2019 | ||||||
Operating lease cost | $ | $ | ||||||
Variable lease cost | ||||||||
Sublease income | ( | ) | ( | ) | ||||
Finance lease cost | ||||||||
Amortization of ROU assets | ||||||||
Interest on lease liabilities | ||||||||
Total lease cost | $ | $ | ||||||
thousands | Operating Leases | |||
Operating cash flows | $ | |||
thousands | Operating Leases | Finance Leases | ||||||
Remainder of 2019 | $ | $ | ||||||
2020 | ||||||||
2021 | ||||||||
2022 | ||||||||
2023 | ||||||||
Thereafter | ||||||||
Total lease payments | ||||||||
Less portion representing imputed interest | ||||||||
Total lease liabilities | $ | $ | ||||||
thousands | ||||
2019 | $ | |||
2020 | ||||
2021 | ||||
2022 | ||||
2023 | ||||
Thereafter | ||||
Total lease payments | $ | |||
• | our ability to pay distributions to our unitholders; |
• | our and Anadarko’s assumptions about the energy market; |
• | future throughput (including Anadarko production) that is gathered or processed by or transported through our assets; |
• | our operating results; |
• | competitive conditions; |
• | technology; |
• | the availability of capital resources to fund acquisitions, capital expenditures and other contractual obligations, and our ability to access those resources from Anadarko or through the debt or equity capital markets; |
• | the supply of, demand for, and price of, oil, natural gas, NGLs and related products or services; |
• | commodity price risks inherent in percent-of-proceeds, percent-of-product and keep-whole contracts; |
• | weather and natural disasters; |
• | inflation; |
• | the availability of goods and services; |
• | general economic conditions, internationally, domestically or in the jurisdictions in which we are doing business; |
• | federal, state and local laws as well as state-approved voter ballot initiatives, including those laws or ballot initiatives that limit Anadarko’s and other producers’ hydraulic fracturing or other oil and natural gas development or operations; |
• | environmental liabilities; |
• | legislative or regulatory changes, including changes affecting our status as a partnership for federal income tax purposes; |
• | changes in the financial or operational condition of Anadarko; |
• | the creditworthiness of Anadarko or our other counterparties, including financial institutions, operating partners, and other parties; |
• | changes in Anadarko’s capital program, strategy or desired areas of focus; |
• | our commitments to capital projects; |
• | our ability to use the RCF; |
• | our ability to repay debt; |
• | conflicts of interest among us, our general partner, and affiliates, including Anadarko; |
• | our ability to maintain and/or obtain rights to operate our assets on land owned by third parties; |
• | our ability to acquire assets on acceptable terms from Anadarko or third parties, and Anadarko’s ability to generate an inventory of assets suitable for acquisition; |
• | non-payment or non-performance of Anadarko or other significant customers, including under gathering, processing, transportation and disposal agreements and the $260.0 million note receivable from Anadarko; |
• | the timing, amount and terms of future issuances of equity and debt securities; |
• | the outcome of pending and future regulatory, legislative, or other proceedings or investigations, and continued or additional disruptions in operations that may occur as Anadarko and we comply with any regulatory orders or other state or local changes in laws or regulations; |
• | the completion of the proposed merger transaction between Occidental and Anadarko; and |
• | other factors discussed below, in “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Critical Accounting Estimates” included in the WES and WES Operating 2018 Forms 10-K, certain sections of which were recast to reflect the results attributable to AMA in the WES and WES Operating Current Reports on Form 8-K, as filed with the SEC on May 17, 2019, in our quarterly reports on Form 10-Q, and in our other public filings and press releases. |
Owned and Operated | Operated Interests | Non-Operated Interests | Equity Interests | |||||||||
Gathering systems (1) | 17 | 2 | 3 | 2 | ||||||||
Treating facilities | 35 | 3 | — | 3 | ||||||||
Natural gas processing plants/trains | 24 | 3 | — | 5 | ||||||||
NGLs pipelines | 2 | — | — | 4 | ||||||||
Natural gas pipelines | 5 | — | — | 1 | ||||||||
Oil pipelines | 3 | 1 | — | 3 | ||||||||
(1) | Includes the DBM water systems. |
• | We raised our distribution to $0.61800 per unit for the second quarter of 2019, representing a 1% increase over the distribution for the first quarter of 2019 and a 6% increase over the distribution for the second quarter of 2018. |
• | In March 2019, WES Operating entered into interest-rate swap agreements with an aggregate notional amount of $375.0 million. See Liquidity and Capital Resources within this Item 2 for additional information. |
• | In January 2019, we acquired a 30% interest in Red Bluff Express from a third party. See Acquisitions and Divestitures within this Item 2 for additional information. |
• | We commenced operation of Mentone Train II at the West Texas complex (with capacity of 200 MMcf/d) at the end of the first quarter of 2019. |
• | In March 2019, the WGP RCF matured and the outstanding borrowings were repaid. See Liquidity and Capital Resources within this Item 2 for additional information. |
• | In February 2019, WES Operating increased the size of the RCF from $1.5 billion to $2.0 billion and extended the maturity date of the RCF to February 2024. See Liquidity and Capital Resources within this Item 2 for additional information. |
• | Throughput attributable to Western Midstream Partners, LP for natural gas assets totaled 4,276 MMcf/d and 4,238 MMcf/d for the three and six months ended June 30, 2019, respectively, representing a 10% and 11% increase, respectively, compared to the same periods in 2018. |
• | Throughput attributable to Western Midstream Partners, LP for crude oil, NGLs and produced water assets totaled 1,105 MBbls/d and 1,104 MBbls/d for the three and six months ended June 30, 2019, respectively, representing an 84% and 102% increase, respectively, compared to the same periods in 2018. |
• | Operating income (loss) was $310.1 million and $629.0 million for the three and six months ended June 30, 2019, respectively, representing a 171% and 85% increase, respectively, compared to the same periods in 2018. |
• | Adjusted gross margin for natural gas assets (as defined under the caption Key Performance Metrics within this Item 2) averaged $1.06 per Mcf and $1.08 per Mcf for the three and six months ended June 30, 2019, respectively, representing a 12% and 11% increase, respectively, compared to the same periods in 2018. |
• | Adjusted gross margin for crude oil, NGLs and produced water assets (as defined under the caption Key Performance Metrics within this Item 2) averaged $1.83 per Bbl and $1.80 per Bbl for the three and six months ended June 30, 2019, respectively, representing a 6% and 1% increase, respectively, compared to the same periods in 2018. |
Three Months Ended June 30, | |||||||||||||||||||||||||||
2019 | 2018 | Inc/ (Dec) | 2019 | 2018 | Inc/ (Dec) | 2019 | 2018 | Inc/ (Dec) | |||||||||||||||||||
Natural gas (MMcf/d) | Crude oil & NGLs (MBbls/d) | Produced water (MBbls/d) | |||||||||||||||||||||||||
Delaware Basin | 1,179 | 1,044 | 13 | % | 141 | 128 | 10 | % | 515 | 99 | 420 | % | |||||||||||||||
DJ Basin | 1,266 | 1,119 | 13 | % | 112 | 108 | 4 | % | — | — | — | % | |||||||||||||||
Equity investments | 402 | 296 | 36 | % | 310 | 219 | 42 | % | — | — | — | % | |||||||||||||||
Other | 1,607 | 1,620 | (1 | )% | 50 | 57 | (12 | )% | — | — | — | % | |||||||||||||||
Total throughput | 4,454 | 4,079 | 9 | % | 613 | 512 | 20 | % | 515 | 99 | 420 | % | |||||||||||||||
Six Months Ended June 30, | |||||||||||||||||||||||||||
2019 | 2018 | Inc/ (Dec) | 2019 | 2018 | Inc/ (Dec) | 2019 | 2018 | Inc/ (Dec) | |||||||||||||||||||
Natural gas (MMcf/d) | Crude oil & NGLs (MBbls/d) | Produced water (MBbls/d) | |||||||||||||||||||||||||
Delaware Basin | 1,178 | 982 | 20 | % | 143 | 120 | 19 | % | 516 | 89 | 480 | % | |||||||||||||||
DJ Basin | 1,262 | 1,113 | 13 | % | 107 | 105 | 2 | % | — | — | — | % | |||||||||||||||
Equity investments | 390 | 295 | 32 | % | 308 | 187 | 65 | % | — | — | — | % | |||||||||||||||
Other | 1,585 | 1,602 | (1 | )% | 53 | 57 | (7 | )% | — | — | — | % | |||||||||||||||
Total throughput | 4,415 | 3,992 | 11 | % | 611 | 469 | 30 | % | 516 | 89 | 480 | % | |||||||||||||||
Three Months Ended June 30, | Six Months Ended June 30, | |||||||||||||||
thousands | 2019 | 2018 | 2019 | 2018 | ||||||||||||
Total revenues and other (1) | $ | 685,054 | $ | 518,078 | $ | 1,356,937 | $ | 1,019,132 | ||||||||
Equity income, net – affiliates | 63,598 | 49,430 | 121,590 | 79,659 | ||||||||||||
Total operating expenses (1) | 437,531 | 453,464 | 847,888 | 759,996 | ||||||||||||
Gain (loss) on divestiture and other, net | (1,061 | ) | 170 | (1,651 | ) | 286 | ||||||||||
Operating income (loss) | 310,060 | 114,214 | 628,988 | 339,081 | ||||||||||||
Interest income – affiliates | 4,225 | 4,225 | 8,450 | 8,450 | ||||||||||||
Interest expense | (79,472 | ) | (42,245 | ) | (145,348 | ) | (80,260 | ) | ||||||||
Other income (expense), net | (58,477 | ) | 1,277 | (93,683 | ) | 2,094 | ||||||||||
Income (loss) before income taxes | 176,336 | 77,471 | 398,407 | 269,365 | ||||||||||||
Income tax (benefit) expense | 1,278 | 10,304 | 11,370 | 21,188 | ||||||||||||
Net income (loss) | 175,058 | 67,167 | 387,037 | 248,177 | ||||||||||||
Net income attributable to noncontrolling interests | 5,464 | (33,017 | ) | 98,783 | 16,466 | |||||||||||
Net income (loss) attributable to Western Midstream Partners, LP (2) | $ | 169,594 | $ | 100,184 | $ | 288,254 | $ | 231,711 | ||||||||
Key performance metrics (3) | ||||||||||||||||
Adjusted gross margin | $ | 596,476 | $ | 430,873 | $ | 1,184,170 | $ | 849,707 | ||||||||
Adjusted EBITDA | 432,920 | 311,144 | 861,250 | 623,284 | ||||||||||||
Distributable cash flow | 335,485 | 249,121 | 675,653 | 513,209 | ||||||||||||
(1) | Revenues and other include amounts earned from services provided to our affiliates, as well as from the sale of residue and NGLs to our affiliates. Operating expenses include amounts charged by our affiliates for services, as well as reimbursement of amounts paid by affiliates to third parties on our behalf. See Note 6—Transactions with Affiliates in the Notes to Consolidated Financial Statements under Part I, Item 1 of this Form 10-Q. |
(2) | For reconciliations to comparable consolidated results of WES Operating, see Items Affecting the Comparability of Financial Results with WES Operating within this Item 2. |
(3) | Adjusted gross margin, Adjusted EBITDA and Distributable cash flow are defined under the caption Key Performance Metrics within this Item 2. For reconciliations of these non-GAAP financial measures to their most directly comparable financial measures calculated and presented in accordance with GAAP, see Key Performance Metrics—Reconciliation of non-GAAP measures within this Item 2. |
Three Months Ended June 30, | Six Months Ended June 30, | |||||||||||||||||
2019 | 2018 | Inc/ (Dec) | 2019 | 2018 | Inc/ (Dec) | |||||||||||||
Throughput for natural gas assets (MMcf/d) | ||||||||||||||||||
Gathering, treating and transportation | 528 | 540 | (2 | )% | 527 | 524 | 1 | % | ||||||||||
Processing | 3,524 | 3,243 | 9 | % | 3,498 | 3,173 | 10 | % | ||||||||||
Equity investment (1) | 402 | 296 | 36 | % | 390 | 295 | 32 | % | ||||||||||
Total throughput for natural gas assets | 4,454 | 4,079 | 9 | % | 4,415 | 3,992 | 11 | % | ||||||||||
Throughput attributable to noncontrolling interests for natural gas assets (2) | 178 | 174 | 2 | % | 177 | 173 | 2 | % | ||||||||||
Total throughput attributable to Western Midstream Partners, LP for natural gas assets | 4,276 | 3,905 | 10 | % | 4,238 | 3,819 | 11 | % | ||||||||||
Throughput for crude oil, NGLs and produced water assets (MBbls/d) | ||||||||||||||||||
Gathering, treating, transportation and disposal | 817 | 392 | 108 | % | 819 | 371 | 121 | % | ||||||||||
Equity investment (3) | 311 | 219 | 42 | % | 308 | 187 | 65 | % | ||||||||||
Total throughput for crude oil, NGLs and produced water assets | 1,128 | 611 | 85 | % | 1,127 | 558 | 102 | % | ||||||||||
Throughput attributable to noncontrolling interests for crude oil, NGLs and produced water assets (2) | 23 | 12 | 92 | % | 23 | 11 | 109 | % | ||||||||||
Total throughput attributable to Western Midstream Partners, LP for crude oil, NGLs and produced water assets | 1,105 | 599 | 84 | % | 1,104 | 547 | 102 | % | ||||||||||
(1) | Represents the 14.81% share of average Fort Union throughput, 22% share of average Rendezvous throughput, 50% share of average Mi Vida and Ranch Westex throughput, and 30% share of average Red Bluff Express throughput. |
(2) | For all periods presented, includes (i) the 25% interest in Chipeta held by a third-party member and (ii) the 2.0% limited partner interest in WES Operating held by a subsidiary of Anadarko, which collectively represent WES’s noncontrolling interests as of June 30, 2019. For a discussion of the impact to noncontrolling interests as a result of the Merger closing, see Noncontrolling interests within Note 1—Description of Business and Basis of Presentation in the Notes to Consolidated Financial Statements under Part I, Item 1 of this Form 10-Q. |
(3) | Represents the 10% share of average White Cliffs throughput, 25% share of average Mont Belvieu JV throughput, 20% share of average TEG, TEP, Whitethorn and Saddlehorn throughput, 33.33% share of average FRP throughput and 15% share of average Panola throughput. |
Three Months Ended June 30, | Six Months Ended June 30, | |||||||||||||||||||||
thousands except percentages | 2019 | 2018 | Inc/ (Dec) | 2019 | 2018 | Inc/ (Dec) | ||||||||||||||||
Service revenues – fee based | $ | 593,544 | $ | 431,861 | 37 | % | $ | 1,173,518 | $ | 825,634 | 42 | % | ||||||||||
Service revenues – product based | 16,675 | 22,662 | (26 | )% | 36,054 | 46,085 | (22 | )% | ||||||||||||||
Total service revenues | $ | 610,219 | $ | 454,523 | 34 | % | $ | 1,209,572 | $ | 871,719 | 39 | % | ||||||||||
Three Months Ended June 30, | Six Months Ended June 30, | |||||||||||||||||||||
thousands except percentages and per-unit amounts | 2019 | 2018 | Inc/ (Dec) | 2019 | 2018 | Inc/ (Dec) | ||||||||||||||||
Natural gas sales (1) | $ | 8,227 | $ | 12,225 | (33 | )% | $ | 35,551 | $ | 42,062 | (15 | )% | ||||||||||
NGLs sales (1) | 66,242 | 51,090 | 30 | % | 111,051 | 104,878 | 6 | % | ||||||||||||||
Total Product sales | $ | 74,469 | $ | 63,315 | 18 | % | $ | 146,602 | $ | 146,940 | — | % | ||||||||||
Gross average sales price per unit (1): | ||||||||||||||||||||||
Natural gas (per Mcf) | $ | 1.13 | $ | 1.99 | (43 | )% | $ | 1.77 | $ | 2.24 | (21 | )% | ||||||||||
NGLs (per Bbl) | 20.92 | 32.12 | (35 | )% | 23.09 | 31.11 | (26 | )% | ||||||||||||||
(1) | For the three and six months ended June 30, 2018, includes the effects of commodity price swap agreements for the MGR assets and DJ Basin complex, excluding the amounts considered above market with respect to these swap agreements that were recorded as capital contributions in the consolidated statement of equity and partners’ capital. See Note 6—Transactions with Affiliates in the Notes to Consolidated Financial Statements under Part I, Item 1 of this Form 10-Q. |
Three Months Ended June 30, | Six Months Ended June 30, | |||||||||||||||||||||
thousands except percentages | 2019 | 2018 | Inc/ (Dec) | 2019 | 2018 | Inc/ (Dec) | ||||||||||||||||
Equity income, net – affiliates | $ | 63,598 | $ | 49,430 | 29 | % | $ | 121,590 | $ | 79,659 | 53 | % | ||||||||||
Three Months Ended June 30, | Six Months Ended June 30, | |||||||||||||||||||||
thousands except percentages | 2019 | 2018 | Inc/ (Dec) | 2019 | 2018 | Inc/ (Dec) | ||||||||||||||||
NGLs purchases | $ | 95,856 | $ | 74,039 | 29 | % | $ | 175,675 | $ | 134,560 | 31 | % | ||||||||||
Residue purchases | 17,980 | 24,436 | (26 | )% | 51,620 | 56,574 | (9 | )% | ||||||||||||||
Other | 9,041 | (2,819 | ) | NM | 9,645 | (1,160 | ) | NM | ||||||||||||||
Cost of product | 122,877 | 95,656 | 28 | % | 236,940 | 189,974 | 25 | % | ||||||||||||||
Operation and maintenance | 148,431 | 112,789 | 32 | % | 291,260 | 209,584 | 39 | % | ||||||||||||||
Total Cost of product and Operation and maintenance expenses | $ | 271,308 | $ | 208,445 | 30 | % | $ | 528,200 | $ | 399,558 | 32 | % | ||||||||||
Three Months Ended June 30, | Six Months Ended June 30, | |||||||||||||||||||||
thousands except percentages | 2019 | 2018 | Inc/ (Dec) | 2019 | 2018 | Inc/ (Dec) | ||||||||||||||||
General and administrative | $ | 30,027 | $ | 15,597 | 93 | % | $ | 52,871 | $ | 31,426 | 68 | % | ||||||||||
Property and other taxes | 14,282 | 13,750 | 4 | % | 30,567 | 28,350 | 8 | % | ||||||||||||||
Depreciation and amortization | 121,117 | 88,488 | 37 | % | 235,063 | 173,278 | 36 | % | ||||||||||||||
Impairments | 797 | 127,184 | (99 | )% | 1,187 | 127,384 | (99 | )% | ||||||||||||||
Total other operating expenses | $ | 166,223 | $ | 245,019 | (32 | )% | $ | 319,688 | $ | 360,438 | (11 | )% | ||||||||||
Three Months Ended June 30, | Six Months Ended June 30, | |||||||||||||||||||||
thousands except percentages | 2019 | 2018 | Inc/ (Dec) | 2019 | 2018 | Inc/ (Dec) | ||||||||||||||||
Note receivable – Anadarko | $ | 4,225 | $ | 4,225 | — | % | $ | 8,450 | $ | 8,450 | — | % | ||||||||||
Interest income – affiliates | $ | 4,225 | $ | 4,225 | — | % | $ | 8,450 | $ | 8,450 | — | % | ||||||||||
Third parties | ||||||||||||||||||||||
Long-term debt | $ | (82,624 | ) | $ | (48,671 | ) | 70 | % | $ | (149,720 | ) | $ | (90,207 | ) | 66 | % | ||||||
Amortization of debt issuance costs and commitment fees | (3,170 | ) | (2,037 | ) | 56 | % | (6,322 | ) | (4,901 | ) | 29 | % | ||||||||||
Capitalized interest | 6,342 | 9,872 | (36 | )% | 12,547 | 16,834 | (25 | )% | ||||||||||||||
Affiliates | ||||||||||||||||||||||
APCWH Note Payable | — | (1,409 | ) | (100 | )% | (1,833 | ) | (1,986 | ) | (8 | )% | |||||||||||
Finance lease liabilities | (20 | ) | — | NM | (20 | ) | — | NM | ||||||||||||||
Interest expense | $ | (79,472 | ) | $ | (42,245 | ) | 88 | % | $ | (145,348 | ) | $ | (80,260 | ) | 81 | % | ||||||
Three Months Ended June 30, | Six Months Ended June 30, | |||||||||||||||||||
thousands except percentages | 2019 | 2018 | Inc/ (Dec) | 2019 | 2018 | Inc/ (Dec) | ||||||||||||||
Other income (expense), net | $ | (58,477 | ) | $ | 1,277 | NM | $ | (93,683 | ) | $ | 2,094 | NM | ||||||||
Three Months Ended June 30, | Six Months Ended June 30, | |||||||||||||||||||||
thousands except percentages | 2019 | 2018 | Inc/ (Dec) | 2019 | 2018 | Inc/ (Dec) | ||||||||||||||||
Income (loss) before income taxes | $ | 176,336 | $ | 77,471 | 128 | % | $ | 398,407 | $ | 269,365 | 48 | % | ||||||||||
Income tax (benefit) expense | 1,278 | 10,304 | (88 | )% | 11,370 | 21,188 | (46 | )% | ||||||||||||||
Effective tax rate | 1 | % | 13 | % | 3 | % | 8 | % | ||||||||||||||
Three Months Ended June 30, | Six Months Ended June 30, | |||||||||||||||||||||
thousands except percentages and per-unit amounts | 2019 | 2018 | Inc/ (Dec) | 2019 | 2018 | Inc/ (Dec) | ||||||||||||||||
Adjusted gross margin for natural gas assets (1) | $ | 412,494 | $ | 336,440 | 23 | % | $ | 824,922 | $ | 672,054 | 23 | % | ||||||||||
Adjusted gross margin for crude oil, NGLs and produced water assets (2) | 183,982 | 94,433 | 95 | % | 359,248 | 177,653 | 102 | % | ||||||||||||||
Adjusted gross margin (3) | 596,476 | 430,873 | 38 | % | 1,184,170 | 849,707 | 39 | % | ||||||||||||||
Adjusted gross margin per Mcf for natural gas assets (4) | 1.06 | 0.95 | 12 | % | 1.08 | 0.97 | 11 | % | ||||||||||||||
Adjusted gross margin per Bbl for crude oil, NGLs and produced water assets (5) | 1.83 | 1.73 | 6 | % | 1.80 | 1.79 | 1 | % | ||||||||||||||
Adjusted EBITDA (3) | 432,920 | 311,144 | 39 | % | 861,250 | 623,284 | 38 | % | ||||||||||||||
Distributable cash flow (3) | 335,485 | 249,121 | 35 | % | 675,653 | 513,209 | 32 | % | ||||||||||||||
(1) | Adjusted gross margin for natural gas assets is calculated as total revenues and other for natural gas assets (less reimbursements for electricity-related expenses recorded as revenue), less cost of product for natural gas assets, plus distributions from our equity investments, and excluding the noncontrolling interests owners’ proportionate share of revenues and cost of product. See the reconciliation of Adjusted gross margin for natural gas assets to its most comparable GAAP measure below. |
(2) | Adjusted gross margin for crude oil, NGLs and produced water assets is calculated as total revenues and other for crude oil, NGLs and produced water assets (less reimbursements for electricity-related expenses recorded as revenue), less cost of product for crude oil, NGLs and produced water assets, plus distributions from our equity investments, and excluding the noncontrolling interests owners’ proportionate share of revenues and cost of product. See the reconciliation of Adjusted gross margin for crude oil, NGLs and produced water assets to its most comparable GAAP measure below. |
(3) | For a reconciliation of Adjusted gross margin, Adjusted EBITDA and Distributable cash flow to the most directly comparable financial measure calculated and presented in accordance with GAAP, see the descriptions below. |
(4) | Average for period. Calculated as Adjusted gross margin for natural gas assets, divided by total throughput (MMcf/d) attributable to Western Midstream Partners, LP for natural gas assets. |
(5) | Average for period. Calculated as Adjusted gross margin for crude oil, NGLs and produced water assets, divided by total throughput (MBbls/d) attributable to Western Midstream Partners, LP for crude oil, NGLs and produced water assets. |
• | our operating performance as compared to other publicly traded partnerships in the midstream industry, without regard to financing methods, capital structure or historical cost basis; |
• | the ability of our assets to generate cash flow to make distributions; and |
• | the viability of acquisitions and capital expenditure projects and the returns on investment of various investment opportunities. |
Three Months Ended June 30, | Six Months Ended June 30, | |||||||||||||||
thousands | 2019 | 2018 | 2019 | 2018 | ||||||||||||
Reconciliation of Operating income (loss) to Adjusted gross margin | ||||||||||||||||
Operating income (loss) | $ | 310,060 | $ | 114,214 | $ | 628,988 | $ | 339,081 | ||||||||
Add: | ||||||||||||||||
Distributions from equity investments | 70,522 | 38,731 | 132,535 | 79,157 | ||||||||||||
Operation and maintenance | 148,431 | 112,789 | 291,260 | 209,584 | ||||||||||||
General and administrative | 30,027 | 15,597 | 52,871 | 31,426 | ||||||||||||
Property and other taxes | 14,282 | 13,750 | 30,567 | 28,350 | ||||||||||||
Depreciation and amortization | 121,117 | 88,488 | 235,063 | 173,278 | ||||||||||||
Impairments | 797 | 127,184 | 1,187 | 127,384 | ||||||||||||
Less: | ||||||||||||||||
Gain (loss) on divestiture and other, net | (1,061 | ) | 170 | (1,651 | ) | 286 | ||||||||||
Equity income, net – affiliates | 63,598 | 49,430 | 121,590 | 79,659 | ||||||||||||
Reimbursed electricity-related charges recorded as revenues | 20,189 | 17,262 | 36,778 | 32,719 | ||||||||||||
Adjusted gross margin attributable to noncontrolling interests (1) | 16,034 | 13,018 | 31,584 | 25,889 | ||||||||||||
Adjusted gross margin | $ | 596,476 | $ | 430,873 | $ | 1,184,170 | $ | 849,707 | ||||||||
Adjusted gross margin for natural gas assets | $ | 412,494 | $ | 336,440 | $ | 824,922 | $ | 672,054 | ||||||||
Adjusted gross margin for crude oil, NGLs and produced water assets | 183,982 | 94,433 | 359,248 | 177,653 | ||||||||||||
(1) | For all periods presented, includes (i) the 25% interest in Chipeta held by a third-party member and (ii) the 2.0% limited partner interest in WES Operating held by a subsidiary of Anadarko, which collectively represent WES’s noncontrolling interests as of June 30, 2019. For a discussion of the impact to noncontrolling interests as a result of the Merger closing, see Noncontrolling interests within Note 1—Description of Business and Basis of Presentation in the Notes to Consolidated Financial Statements under Part I, Item 1 of this Form 10-Q. |
Three Months Ended June 30, | Six Months Ended June 30, | |||||||||||||||
thousands | 2019 | 2018 | 2019 | 2018 | ||||||||||||
Reconciliation of Net income (loss) to Adjusted EBITDA | ||||||||||||||||
Net income (loss) | $ | 175,058 | $ | 67,167 | $ | 387,037 | $ | 248,177 | ||||||||
Add: | ||||||||||||||||
Distributions from equity investments | 70,522 | 38,731 | 132,535 | 79,157 | ||||||||||||
Non-cash equity-based compensation expense | 4,343 | 2,000 | 6,141 | 4,152 | ||||||||||||
Interest expense | 79,472 | 42,245 | 145,348 | 80,260 | ||||||||||||
Income tax expense | 1,278 | 10,304 | 11,370 | 21,188 | ||||||||||||
Depreciation and amortization | 121,117 | 88,488 | 235,063 | 173,278 | ||||||||||||
Impairments | 797 | 127,184 | 1,187 | 127,384 | ||||||||||||
Other expense | 58,639 | 8 | 93,852 | 151 | ||||||||||||
Less: | ||||||||||||||||
Gain (loss) on divestiture and other, net | (1,061 | ) | 170 | (1,651 | ) | 286 | ||||||||||
Equity income, net – affiliates | 63,598 | 49,430 | 121,590 | 79,659 | ||||||||||||
Interest income – affiliates | 4,225 | 4,225 | 8,450 | 8,450 | ||||||||||||
Other income | — | 1,277 | — | 2,094 | ||||||||||||
Adjusted EBITDA attributable to noncontrolling interests (1) | 11,544 | 9,881 | 22,894 | 19,974 | ||||||||||||
Adjusted EBITDA | $ | 432,920 | $ | 311,144 | $ | 861,250 | $ | 623,284 | ||||||||
Reconciliation of Net cash provided by operating activities to Adjusted EBITDA | ||||||||||||||||
Net cash provided by operating activities | $ | 343,458 | $ | 329,175 | $ | 686,531 | $ | 629,326 | ||||||||
Interest (income) expense, net | 75,247 | 38,020 | 136,898 | 71,810 | ||||||||||||
Uncontributed cash-based compensation awards | 1,218 | 465 | 648 | 987 | ||||||||||||
Accretion and amortization of long-term obligations, net | (1,337 | ) | (1,273 | ) | (2,848 | ) | (3,376 | ) | ||||||||
Current income tax (benefit) expense | 458 | (14,335 | ) | 6,485 | (27,670 | ) | ||||||||||
Other (income) expense, net (2) | (470 | ) | (1,277 | ) | (902 | ) | (2,094 | ) | ||||||||
Distributions from equity investments in excess of cumulative earnings – affiliates | 9,260 | 4,782 | 17,052 | 13,632 | ||||||||||||
Changes in assets and liabilities: | ||||||||||||||||
Accounts receivable, net | 6,818 | (21,060 | ) | (2,668 | ) | 8,572 | ||||||||||
Accounts and imbalance payables and accrued liabilities, net | 25,669 | (13,136 | ) | 81,198 | (42,040 | ) | ||||||||||
Other items, net | (15,857 | ) | (336 | ) | (38,250 | ) | (5,889 | ) | ||||||||
Adjusted EBITDA attributable to noncontrolling interests (1) | (11,544 | ) | (9,881 | ) | (22,894 | ) | (19,974 | ) | ||||||||
Adjusted EBITDA | $ | 432,920 | $ | 311,144 | $ | 861,250 | $ | 623,284 | ||||||||
Cash flow information | ||||||||||||||||
Net cash provided by operating activities | $ | 686,531 | $ | 629,326 | ||||||||||||
Net cash used in investing activities | (2,865,168 | ) | (1,287,904 | ) | ||||||||||||
Net cash provided by (used in) financing activities | 2,182,290 | 634,307 | ||||||||||||||
(1) | For all periods presented, includes (i) the 25% interest in Chipeta held by a third-party member and (ii) the 2.0% limited partner interest in WES Operating held by a subsidiary of Anadarko, which collectively represent WES’s noncontrolling interests as of June 30, 2019. For a discussion of the impact to noncontrolling interests as a result of the Merger closing, see Noncontrolling interests within Note 1—Description of Business and Basis of Presentation in the Notes to Consolidated Financial Statements under Part I, Item 1 of this Form 10-Q. |
(2) | Excludes non-cash losses on interest-rate swaps of $59.0 million and $94.6 million for the three and six months ended June 30, 2019, respectively. See Note 10—Debt and Interest Expense in the Notes to Consolidated Financial Statements under Part I, Item 1 of this Form 10-Q. |
Three Months Ended June 30, | Six Months Ended June 30, | |||||||||||||||
thousands except Coverage ratio | 2019 | 2018 | 2019 | 2018 | ||||||||||||
Reconciliation of Net income (loss) to Distributable cash flow and calculation of the Coverage ratio | ||||||||||||||||
Net income (loss) | $ | 175,058 | $ | 67,167 | $ | 387,037 | $ | 248,177 | ||||||||
Add: | ||||||||||||||||
Distributions from equity investments | 70,522 | 38,731 | 132,535 | 79,157 | ||||||||||||
Non-cash equity-based compensation expense | 4,343 | 2,000 | 6,141 | 4,152 | ||||||||||||
Income tax (benefit) expense | 1,278 | 10,304 | 11,370 | 21,188 | ||||||||||||
Depreciation and amortization | 121,117 | 88,488 | 235,063 | 173,278 | ||||||||||||
Impairments | 797 | 127,184 | 1,187 | 127,384 | ||||||||||||
Above-market component of swap agreements with Anadarko (1) | — | 13,839 | 7,407 | 28,121 | ||||||||||||
Other expense | 58,639 | 8 | 93,852 | 151 | ||||||||||||
Less: | ||||||||||||||||
Recognized Service revenues – fee based (less than) in excess of customer billings | (12,038 | ) | 1,557 | (18,296 | ) | 2,957 | ||||||||||
Gain (loss) on divestiture and other, net | (1,061 | ) | 170 | (1,651 | ) | 286 | ||||||||||
Equity income, net – affiliates | 63,598 | 49,430 | 121,590 | 79,659 | ||||||||||||
Cash paid for maintenance capital expenditures | 29,899 | 27,689 | 65,590 | 48,917 | ||||||||||||
Capitalized interest | 6,342 | 9,872 | 12,547 | 16,834 | ||||||||||||
Cash paid for (reimbursement of) income taxes | — | — | 96 | (87 | ) | |||||||||||
Other income | — | 1,277 | — | 2,094 | ||||||||||||
Distributable cash flow attributable to noncontrolling interests (2) | 9,529 | 8,605 | 19,063 | 17,739 | ||||||||||||
Distributable cash flow | $ | 335,485 | $ | 249,121 | $ | 675,653 | $ | 513,209 | ||||||||
Distributions declared | ||||||||||||||||
Distributions from WES Operating | $ | 282,319 | $ | 559,923 | ||||||||||||
Less: Cash reserve for the proper conduct of WES’s business | 2,360 | 3,640 | ||||||||||||||
Distributions to WES unitholders (3) | $ | 279,959 | $ | 556,283 | ||||||||||||
Coverage ratio | 1.20 | x | 1.21 | x | ||||||||||||
(1) | See Note 6—Transactions with Affiliates in the Notes to Consolidated Financial Statements under Part I, Item 1 of this Form 10-Q. |
(2) | For all periods presented, includes (i) the 25% interest in Chipeta held by a third-party member and (ii) the 2.0% limited partner interest in WES Operating held by a subsidiary of Anadarko, which collectively represent WES’s noncontrolling interests as of June 30, 2019. For a discussion of the impact to noncontrolling interests as a result of the Merger closing, see Noncontrolling interests within Note 1—Description of Business and Basis of Presentation in the Notes to Consolidated Financial Statements under Part I, Item 1 of this Form 10-Q. |
(3) | Reflects cash distributions of $0.61800 and $1.22800 per unit declared for the three and six months ended June 30, 2019, respectively. |
• | maintenance capital expenditures, which include those expenditures required to maintain the existing operating capacity and service capability of our assets, such as to replace system components and equipment that have been subject to significant use over time, become obsolete or reached the end of their useful lives, to remain in compliance with regulatory or legal requirements or to complete additional well connections to maintain existing system throughput and related cash flows; or |
• | expansion capital expenditures, which include expenditures to construct new midstream infrastructure and those expenditures incurred to extend the useful lives of our assets, reduce costs, increase revenues or increase system throughput or capacity from current levels, including well connections that increase existing system throughput. |
Six Months Ended June 30, | ||||||||
thousands | 2019 | 2018 | ||||||
Acquisitions | $ | 2,100,804 | $ | 161,858 | ||||
Expansion capital expenditures | $ | 638,786 | $ | 1,063,540 | ||||
Maintenance capital expenditures | 65,639 | 48,934 | ||||||
Total capital expenditures (1) (2) | $ | 704,425 | $ | 1,112,474 | ||||
Capital incurred (1) (3) | $ | 570,886 | $ | 1,127,531 | ||||
(1) | For the six months ended June 30, 2019 and 2018, included $9.5 million and $16.8 million, respectively, of capitalized interest. |
(2) | Capital expenditures for the six months ended June 30, 2018, included $462.4 million of pre-acquisition capital expenditures for AMA. |
(3) | Capital incurred for the six months ended June 30, 2018, included $499.5 million of pre-acquisition capital incurred for AMA. |
Six Months Ended June 30, | ||||||||
thousands | 2019 | 2018 | ||||||
Net cash provided by (used in): | ||||||||
Operating activities | $ | 686,531 | $ | 629,326 | ||||
Investing activities | (2,865,168 | ) | (1,287,904 | ) | ||||
Financing activities | 2,182,290 | 634,307 | ||||||
Net increase (decrease) in cash and cash equivalents | $ | 3,653 | $ | (24,271 | ) | |||
• | $2.0 billion of cash paid for the acquisition of AMA; |
• | $704.4 million of capital expenditures, primarily related to construction and expansion at the West Texas and DJ Basin complexes, DBM oil system and DBM water systems; |
• | $92.5 million of cash paid for the acquisition of the interest in Red Bluff Express; |
• | $77.3 million of capital contributions primarily paid to Cactus II, the TEFR Interests, Whitethorn LLC, Red Bluff Express and White Cliffs for construction activities; and |
• | $17.1 million of distributions received from equity investments in excess of cumulative earnings. |
• | $1.1 billion of capital expenditures, primarily related to construction and expansion at the West Texas and DJ Basin complexes, DBM oil system and DBM water systems; |
• | $161.9 million of cash paid for the acquisitions of the interests in Whitethorn LLC and Cactus II; |
• | $27.5 million of capital contributions paid to Cactus II, Whitethorn LLC and White Cliffs for construction activities; and |
• | $13.6 million of distributions received from equity investments in excess of cumulative earnings. |
• | $2.0 billion of borrowings under the Term loan facility, net of issuance costs, which were used to fund the acquisition of AMA and to repay the APCWH Note Payable; |
• | $700.0 million of borrowings under the RCF, which were used for general partnership purposes, including to fund capital expenditures; |
• | $456.9 million of net contributions from Anadarko representing intercompany transactions attributable to the acquisition of AMA; |
• | $439.6 million of repayments of the total outstanding balance under the APCWH Note Payable; |
• | $408.2 million of distributions paid to WES unitholders; |
• | $106.7 million of distributions paid to the noncontrolling interest owners of WES Operating; |
• | $28.0 million of repayments of the total outstanding balance under the WGP RCF, which matured in March 2019; |
• | $11.0 million of borrowings under the APCWH Note Payable, which were used to fund the construction of the DBM water systems; |
• | $7.4 million of capital contributions from Anadarko related to the above-market component of swap agreements; and |
• | $3.8 million of distributions paid to the noncontrolling interest owner of Chipeta. |
• | $1.08 billion of net proceeds from the offering of the 4.500% Senior Notes due 2028 and 5.300% Senior Notes due 2048 in March 2018, after underwriting and original issue discounts and offering costs, which were used to repay amounts outstanding under the RCF and for general partnership purposes, including to fund capital expenditures; |
• | $630.0 million of repayments of outstanding borrowings under the RCF; |
• | $256.8 million of borrowings under the RCF, net of extension costs, which were used for general partnership purposes, including to fund capital expenditures; |
• | $244.7 million of distributions paid to WES unitholders; |
• | $190.1 million of distributions paid to the noncontrolling interest owners of WES Operating; |
• | $187.9 million of borrowings under the APCWH Note Payable, which were used to fund the construction of the DBM water systems; |
• | $157.3 million of net contributions from Anadarko representing intercompany transactions attributable to the acquisition of AMA; |
• | $28.1 million of capital contributions from Anadarko related to the above-market component of swap agreements; and |
• | $6.4 million of distributions paid to the noncontrolling interest owner of Chipeta. |
Three Months Ended June 30, | Six Months Ended June 30, | |||||||||||||||
thousands | 2019 | 2018 | 2019 | 2018 | ||||||||||||
Net income (loss) attributable to WES | $ | 169,594 | $ | 100,184 | $ | 288,254 | $ | 231,711 | ||||||||
Limited partner interests in WES Operating not held by WES (1) | 3,497 | (35,828 | ) | 94,962 | 10,670 | |||||||||||
General and administrative expenses (2) | 1,926 | 696 | 4,210 | 1,528 | ||||||||||||
Other income (expense), net | (5 | ) | (48 | ) | (63 | ) | (83 | ) | ||||||||
Interest expense | — | 308 | 245 | 1,371 | ||||||||||||
Net income (loss) attributable to WES Operating | $ | 175,012 | $ | 65,312 | $ | 387,608 | $ | 245,197 | ||||||||
(1) | Represents the portion of net income (loss) allocated to the limited partner interests in WES Operating not held by WES. As of June 30, 2019 and 2018, the public held a 0% and 59.5% limited partner interest in WES Operating, respectively. Other subsidiaries of Anadarko separately held a 2.0% and 9.3% limited partner interest in WES Operating as of June 30, 2019 and 2018, respectively. Immediately prior to the closing of the Merger, the IDRs and the general partner units were converted into a non-economic general partner interest in WES Operating and WES Operating common units, and upon consummation of the Merger, all WES Operating common units held by the public and subsidiaries of Anadarko (other than common units held by WES, WES Operating GP and 6.4 million common units held by a subsidiary of Anadarko) were converted into WES common units. See Note 1—Description of Business and Basis of Presentation in the Notes to Consolidated Financial Statements under Part I, Item 1 of this Form 10-Q. |
(2) | Represents general and administrative expenses incurred by WES separate from, and in addition to, those incurred by WES Operating. |
Six Months Ended June 30, | ||||||||
thousands | 2019 | 2018 | ||||||
WES net cash provided by operating activities | $ | 686,531 | $ | 629,326 | ||||
General and administrative expenses (1) | 4,210 | 1,528 | ||||||
Non-cash equity-based compensation expense | (611 | ) | (148 | ) | ||||
Changes in working capital | 355 | (254 | ) | |||||
Other income (expense), net | (63 | ) | (83 | ) | ||||
Interest expense | 245 | 1,371 | ||||||
Debt related amortization and other items, net | (21 | ) | (750 | ) | ||||
WES Operating net cash provided by operating activities | $ | 690,646 | $ | 630,990 | ||||
WES net cash provided by (used in) financing activities | $ | 2,182,290 | $ | 634,307 | ||||
Distributions to WES unitholders (2) | 408,234 | 244,658 | ||||||
Distributions to WES from WES Operating (3) | (439,963 | ) | (247,638 | ) | ||||
Registration expenses related to the issuance of WES common units | 855 | — | ||||||
WGP RCF costs | — | 8 | ||||||
WGP RCF repayments | 28,000 | — | ||||||
WES Operating net cash provided by (used in) financing activities | $ | 2,179,416 | $ | 631,335 | ||||
(1) | Represents general and administrative expenses incurred by WES separate from, and in addition to, those incurred by WES Operating. |
(2) | Represents distributions to WES common unitholders paid under WES’s partnership agreement. See Note 4—Partnership Distributions and Note 5—Equity and Partners’ Capital in the Notes to Consolidated Financial Statements under Part I, Item 1 of this Form 10-Q. |
(3) | Difference attributable to elimination upon consolidation of WES Operating’s distributions on partnership interests owned by WES. See Note 4—Partnership Distributions and Note 5—Equity and Partners’ Capital in the Notes to Consolidated Financial Statements under Part I, Item 1 of this Form 10-Q. |
• | the requirement that Anadarko pay Occidental a termination fee of $1.0 billion under certain circumstances provided in the Occidental Merger Agreement; |
• | negative reactions from the financial markets, including declines in the price of our common units due to the fact that the current price may reflect a market assumption that the Occidental Merger will be completed; |
• | Anadarko having to pay certain transaction expenses and other costs relating to the Occidental Merger; and |
• | the attention of Anadarko’s management, including certain of Anadarko’s officers that also serve as our officers or members of our general partner’s Board of Directors, may have been diverted to the Occidental Merger rather than Anadarko’s own operations and pursuit of other opportunities that could have been beneficial to Anadarko and to us. |
Exhibit Number | Description | |||
# | 2. | 1 | ||
# | 2. | 2 | ||
# | 2. | 3 | ||
# | 2. | 4 | ||
# | 2. | 5 | ||
# | 2. | 6 | ||
# | 2. | 7 | ||
# | 2. | 8 | ||
# | 2. | 9 | ||
# | 2. | 10 | ||
# | 2. | 11 | ||
# | 2. | 12 | ||
Exhibit Number | Description | |||
# | 2. | 13 | ||
# | 2. | 14 | ||
# | 2. | 15 | ||
3. | 1 | |||
3. | 2 | |||
3. | 3 | |||
3. | 4 | |||
3. | 5 | |||
3. | 6 | |||
3. | 7 | |||
3. | 8 | |||
3. | 9 | |||
3. | 10 | |||
3. | 11 | |||
3. | 12 | |||
3. | 13 | |||
Exhibit Number | Description | |||
3. | 14 | |||
3. | 15 | |||
4. | 1 | |||
4. | 2 | |||
4. | 3 | |||
4. | 4 | |||
4. | 5 | |||
4. | 6 | |||
4. | 7 | |||
4. | 8 | |||
4. | 9 | |||
4. | 10 | |||
4. | 11 | |||
4. | 12 | |||
4. | 13 | |||
4. | 14 | |||
4. | 15 | |||
4. | 16 | |||
Exhibit Number | Description | |||
4. | 17 | |||
4. | 18 | |||
10. | 1 | |||
* | 31. | 1 | ||
* | 31. | 2 | ||
* | 31. | 3 | ||
* | 31. | 4 | ||
** | 32. | 1 | ||
** | 32. | 2 | ||
* | 101. | INS | XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document. | |
* | 101. | SCH | XBRL Schema Document | |
* | 101. | CAL | XBRL Calculation Linkbase Document | |
* | 101. | DEF | XBRL Definition Linkbase Document | |
* | 101. | LAB | XBRL Label Linkbase Document | |
* | 101. | PRE | XBRL Presentation Linkbase Document | |
# | Pursuant to Item 601(b)(2) of Regulation S-K, the registrant agrees to furnish supplementally a copy of any omitted schedule to the Securities and Exchange Commission upon request. |
WESTERN MIDSTREAM PARTNERS, LP | |
July 31, 2019 | |
/s/ Robin H. Fielder | |
Robin H. Fielder President and Chief Executive Officer Western Midstream Holdings, LLC (as general partner of Western Midstream Partners, LP) | |
July 31, 2019 | |
/s/ Jaime R. Casas | |
Jaime R. Casas Senior Vice President, Chief Financial Officer and Treasurer Western Midstream Holdings, LLC (as general partner of Western Midstream Partners, LP) | |
WESTERN MIDSTREAM OPERATING, LP | |
July 31, 2019 | |
/s/ Robin H. Fielder | |
Robin H. Fielder President and Chief Executive Officer Western Midstream Operating GP, LLC (as general partner of Western Midstream Operating, LP) | |
July 31, 2019 | |
/s/ Jaime R. Casas | |
Jaime R. Casas Senior Vice President, Chief Financial Officer and Treasurer Western Midstream Operating GP, LLC (as general partner of Western Midstream Operating, LP) | |
1. | I have reviewed this quarterly report on Form 10-Q of Western Midstream Partners, LP (the “registrant”); |
2. | Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report; |
3. | Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report; |
4. | The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have: |
(a) | Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared; |
(b) | Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles; |
(c) | Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and |
(d) | Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and |
5. | The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions): |
(a) | All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and |
(b) | Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting. |
/s/ Robin H. Fielder | |
Robin H. Fielder President and Chief Executive Officer Western Midstream Holdings, LLC (as general partner of Western Midstream Partners, LP) | |
1. | I have reviewed this quarterly report on Form 10-Q of Western Midstream Partners, LP (the “registrant”); |
2. | Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report; |
3. | Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report; |
4. | The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have: |
(a) | Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared; |
(b) | Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles; |
(c) | Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and |
(d) | Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and |
5. | The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions): |
(a) | All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and |
(b) | Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting. |
/s/ Jaime R. Casas | |
Jaime R. Casas Senior Vice President, Chief Financial Officer and Treasurer Western Midstream Holdings, LLC (as general partner of Western Midstream Partners, LP) | |
1. | I have reviewed this quarterly report on Form 10-Q of Western Midstream Operating, LP (the “registrant”); |
2. | Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report; |
3. | Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report; |
4. | The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have: |
(a) | Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared; |
(b) | Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles; |
(c) | Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and |
(d) | Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and |
5. | The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions): |
(a) | All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and |
(b) | Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting. |
/s/ Robin H. Fielder | |
Robin H. Fielder President and Chief Executive Officer Western Midstream Operating GP, LLC (as general partner of Western Midstream Operating, LP) | |
1. | I have reviewed this quarterly report on Form 10-Q of Western Midstream Operating, LP (the “registrant”); |
2. | Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report; |
3. | Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report; |
4. | The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have: |
(a) | Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared; |
(b) | Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles; |
(c) | Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and |
(d) | Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and |
5. | The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions): |
(a) | All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and |
(b) | Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting. |
/s/ Jaime R. Casas | |
Jaime R. Casas Senior Vice President, Chief Financial Officer and Treasurer Western Midstream Operating GP, LLC (as general partner of Western Midstream Operating, LP) | |
(1) | the Quarterly Report on Form 10-Q of the Partnership for the period ending June 30, 2019, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and |
(2) | the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Partnership. |
July 31, 2019 | ||
/s/ Robin H. Fielder | ||
Robin H. Fielder President and Chief Executive Officer Western Midstream Holdings, LLC (as general partner of Western Midstream Partners, LP) | ||
July 31, 2019 | ||
/s/ Jaime R. Casas | ||
Jaime R. Casas Senior Vice President, Chief Financial Officer and Treasurer Western Midstream Holdings, LLC (as general partner of Western Midstream Partners, LP) | ||
(1) | the Quarterly Report on Form 10-Q of the Partnership for the period ending June 30, 2019, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and |
(2) | the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Partnership. |
July 31, 2019 | ||
/s/ Robin H. Fielder | ||
Robin H. Fielder President and Chief Executive Officer Western Midstream Operating GP, LLC (as general partner of Western Midstream Operating, LP) | ||
July 31, 2019 | ||
/s/ Jaime R. Casas | ||
Jaime R. Casas Senior Vice President, Chief Financial Officer and Treasurer Western Midstream Operating GP, LLC (as general partner of Western Midstream Operating, LP) | ||
Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands |
3 Months Ended | 6 Months Ended | 12 Months Ended | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2019 |
Mar. 31, 2019 |
Jun. 30, 2018 |
Mar. 31, 2018 |
[1] | Jun. 30, 2019 |
Jun. 30, 2018 |
Dec. 31, 2018 |
||||||||||
| Revenues and Other | |||||||||||||||||
| Revenues and other | $ 685,054 | $ 518,078 | [1] | $ 1,356,937 | $ 1,019,132 | [1] | |||||||||||
| Equity income, net – affiliates | 63,598 | 49,430 | [1] | 121,590 | 79,659 | [1] | |||||||||||
| Operating expenses | |||||||||||||||||
| Cost of product | [2] | 122,877 | 95,656 | [1] | 236,940 | 189,974 | [1] | ||||||||||
| Operation and maintenance | [2] | 148,431 | 112,789 | [1] | 291,260 | 209,584 | [1] | ||||||||||
| General and administrative | [2] | 30,027 | 15,597 | [1] | 52,871 | 31,426 | [1] | ||||||||||
| Property and other taxes | 14,282 | 13,750 | [1] | 30,567 | 28,350 | [1] | |||||||||||
| Depreciation and amortization | 121,117 | 88,488 | [1] | 235,063 | 173,278 | [1] | |||||||||||
| Impairments | 797 | 127,184 | [1] | 1,187 | 127,384 | [1] | $ 230,600 | ||||||||||
| Total operating expenses | 437,531 | 453,464 | [1] | 847,888 | 759,996 | [1] | |||||||||||
| Gain (loss) on divestiture and other, net | (1,061) | 170 | [1] | (1,651) | 286 | [1] | |||||||||||
| Operating income (loss) | 310,060 | 114,214 | [1] | 628,988 | 339,081 | [1] | |||||||||||
| Interest income – affiliates | 4,225 | 4,225 | [1] | 8,450 | 8,450 | [1] | |||||||||||
| Interest expense | [3] | (79,472) | (42,245) | [1] | (145,348) | (80,260) | [1] | ||||||||||
| Other income (expense), net | (58,477) | 1,277 | [1] | (93,683) | 2,094 | [1] | |||||||||||
| Income (loss) before income taxes | 176,336 | 77,471 | [1] | 398,407 | 269,365 | [1] | |||||||||||
| Income tax expense (benefit) | 1,278 | 10,304 | [1] | 11,370 | 21,188 | [1] | |||||||||||
| Net income (loss) | 175,058 | $ 211,979 | 67,167 | [1] | $ 181,010 | 387,037 | 248,177 | [1] | |||||||||
| Net income (loss) attributable to noncontrolling interests | 5,464 | (33,017) | [1] | 98,783 | 16,466 | [1] | |||||||||||
| Net income (loss) attributable to Western Midstream Partners, LP | 169,594 | 100,184 | [1] | 288,254 | 231,711 | [1] | |||||||||||
| Limited partners' interest in net income (loss): | |||||||||||||||||
| Net income (loss) attributable to Western Midstream Partners, LP | 169,594 | 100,184 | [1] | 288,254 | 231,711 | [1] | |||||||||||
| Pre-acquisition net (income) loss allocated to Anadarko | (163) | (32,604) | [1] | (29,279) | (63,126) | [1] | |||||||||||
| Limited partners' interest in net income (loss) | 169,431 | 67,580 | [1] | 258,975 | 168,585 | [1] | |||||||||||
| Affiliates [Member] | |||||||||||||||||
| Revenues and Other | |||||||||||||||||
| Revenues and other | 385,184 | 289,544 | [1] | 763,621 | 574,720 | [1] | |||||||||||
| Operating expenses | |||||||||||||||||
| Cost of product | 68,225 | 38,001 | 124,397 | 72,820 | |||||||||||||
| Operation and maintenance | 32,318 | 26,826 | 71,459 | 49,827 | |||||||||||||
| General and administrative | 26,892 | 12,262 | 45,786 | 24,950 | |||||||||||||
| Total operating expenses | 127,435 | 77,089 | 241,642 | 147,597 | |||||||||||||
| Interest expense | (20) | (1,409) | (1,853) | (1,986) | |||||||||||||
| Affiliates [Member] | Service Revenues - Fee Based [Member] | |||||||||||||||||
| Revenues and Other | |||||||||||||||||
| Revenues and other | 343,484 | 234,512 | [1] | 670,126 | 456,550 | [1] | |||||||||||
| Affiliates [Member] | Service Revenues - Product Based [Member] | |||||||||||||||||
| Revenues and Other | |||||||||||||||||
| Revenues and other | 634 | 538 | [1] | 1,986 | 1,169 | [1] | |||||||||||
| Affiliates [Member] | Product Sales [Member] | |||||||||||||||||
| Revenues and Other | |||||||||||||||||
| Revenues and other | 41,066 | 54,494 | [1] | 91,509 | 117,001 | [1] | |||||||||||
| Third Parties [Member] | |||||||||||||||||
| Revenues and Other | |||||||||||||||||
| Revenues and other | 299,870 | 228,534 | [1] | 593,316 | 444,412 | [1] | |||||||||||
| Operating expenses | |||||||||||||||||
| Interest expense | (79,452) | (40,836) | (143,495) | (78,274) | |||||||||||||
| Third Parties [Member] | Service Revenues - Fee Based [Member] | |||||||||||||||||
| Revenues and Other | |||||||||||||||||
| Revenues and other | 250,060 | 197,349 | [1] | 503,392 | 369,084 | [1] | |||||||||||
| Third Parties [Member] | Service Revenues - Product Based [Member] | |||||||||||||||||
| Revenues and Other | |||||||||||||||||
| Revenues and other | 16,041 | 22,124 | [1] | 34,068 | 44,916 | [1] | |||||||||||
| Third Parties [Member] | Product Sales [Member] | |||||||||||||||||
| Revenues and Other | |||||||||||||||||
| Revenues and other | 33,403 | 8,821 | [1] | 55,093 | 29,939 | [1] | |||||||||||
| Third Parties [Member] | Other [Member] | |||||||||||||||||
| Revenues and Other | |||||||||||||||||
| Revenues and other | $ 366 | $ 240 | [1] | $ 763 | $ 473 | [1] | |||||||||||
| Limited Partner [Member] | |||||||||||||||||
| Limited partners' interest in net income (loss): | |||||||||||||||||
| Net income (loss) per common unit - basic and diluted | $ 0.37 | $ 0.31 | [1] | $ 0.69 | $ 0.77 | [1] | |||||||||||
| Weighted-average common units outstanding - basic and diluted | 453,000 | 218,934 | [1] | 376,702 | 218,934 | [1] | |||||||||||
| |||||||||||||||||
Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
||||||||||
| Cost of product | [1] | $ 122,877 | $ 95,656 | [2] | $ 236,940 | $ 189,974 | [2] | ||||||
| Operation and maintenance | [1] | 148,431 | 112,789 | [2] | 291,260 | 209,584 | [2] | ||||||
| General and administrative | [1] | 30,027 | 15,597 | [2] | 52,871 | 31,426 | [2] | ||||||
| Interest expense | [3] | 79,472 | 42,245 | [2] | 145,348 | 80,260 | [2] | ||||||
| Affiliates [Member] | |||||||||||||
| Cost of product | 68,225 | 38,001 | 124,397 | 72,820 | |||||||||
| Operation and maintenance | 32,318 | 26,826 | 71,459 | 49,827 | |||||||||
| General and administrative | 26,892 | 12,262 | 45,786 | 24,950 | |||||||||
| Interest expense | $ 20 | $ 1,409 | $ 1,853 | $ 1,986 | |||||||||
| |||||||||||||
Consolidated Balance Sheets - USD ($) $ in Thousands |
Jun. 30, 2019 |
Mar. 31, 2019 |
Dec. 31, 2018 |
[1] | Jun. 30, 2018 |
[1] | Mar. 31, 2018 |
[1] | Dec. 31, 2017 |
[1] | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Current assets | |||||||||||||||||||||||||
| Cash and cash equivalents | $ 95,795 | $ 92,142 | $ 55,317 | $ 79,588 | |||||||||||||||||||||
| Accounts receivable, net | [2] | 219,924 | 221,164 | ||||||||||||||||||||||
| Other current assets | [3] | 20,466 | 27,056 | ||||||||||||||||||||||
| Total current assets | 336,185 | 340,362 | |||||||||||||||||||||||
| Note receivable - Anadarko | 260,000 | 260,000 | |||||||||||||||||||||||
| Property, plant and equipment | |||||||||||||||||||||||||
| Cost | 11,852,158 | 11,258,773 | |||||||||||||||||||||||
| Less accumulated depreciation | 3,058,512 | 2,848,420 | |||||||||||||||||||||||
| Net property, plant and equipment | 8,793,646 | 8,410,353 | |||||||||||||||||||||||
| Goodwill | 445,800 | 445,800 | |||||||||||||||||||||||
| Other intangible assets | 825,399 | 841,408 | |||||||||||||||||||||||
| Equity investments | 1,249,509 | 1,092,088 | |||||||||||||||||||||||
| Other assets | [4] | 69,992 | 67,194 | ||||||||||||||||||||||
| Total assets | 11,980,531 | 11,457,205 | |||||||||||||||||||||||
| Current liabilities | |||||||||||||||||||||||||
| Accounts and imbalance payables | 240,568 | 443,343 | |||||||||||||||||||||||
| Short-term debt | [5] | 8,381 | 28,000 | ||||||||||||||||||||||
| Accrued ad valorem taxes | 30,641 | 36,986 | |||||||||||||||||||||||
| Accrued liabilities | 219,726 | 129,148 | |||||||||||||||||||||||
| Total current liabilities | 499,316 | 637,477 | |||||||||||||||||||||||
| Long-term liabilities | |||||||||||||||||||||||||
| Long-term debt | 7,489,448 | 4,787,381 | |||||||||||||||||||||||
| APCWH Note Payable | [6] | 0 | 427,493 | ||||||||||||||||||||||
| Deferred income taxes | 16,175 | 280,017 | |||||||||||||||||||||||
| Asset retirement obligations | 320,073 | 300,024 | |||||||||||||||||||||||
| Other liabilities | [7] | 164,309 | 132,130 | ||||||||||||||||||||||
| Total long-term liabilities | 7,990,005 | 5,927,045 | |||||||||||||||||||||||
| Total liabilities | 8,489,321 | 6,564,522 | |||||||||||||||||||||||
| Equity and partners' capital | |||||||||||||||||||||||||
| Common units (453,008,854 and 218,937,797 units issued and outstanding at June 30, 2019, and December 31, 2018, respectively) | 3,338,646 | 951,888 | |||||||||||||||||||||||
| Net investment by Anadarko | 0 | 1,388,018 | |||||||||||||||||||||||
| Total partners' capital | 3,338,646 | 2,339,906 | |||||||||||||||||||||||
| Noncontrolling interests | 152,564 | 2,552,777 | |||||||||||||||||||||||
| Total equity and partners' capital | 3,491,210 | $ 3,591,541 | 4,892,683 | $ 4,946,670 | $ 4,994,493 | $ 4,995,050 | |||||||||||||||||||
| Total liabilities, equity and partners' capital | $ 11,980,531 | $ 11,457,205 | |||||||||||||||||||||||
| |||||||||||||||||||||||||
Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands |
Jun. 30, 2019 |
Dec. 31, 2018 |
||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Common units issued | 453,008,854 | 218,937,797 | ||||||||||||
| Common units outstanding | 453,008,854 | 218,937,797 | ||||||||||||
| Accounts receivable, net | [1] | $ 219,924 | $ 221,164 | [2] | ||||||||||
| Other current assets | [3] | 20,466 | 27,056 | [2] | ||||||||||
| Other assets | [4] | 69,992 | 67,194 | [2] | ||||||||||
| Other liabilities | [5] | 164,309 | 132,130 | [2] | ||||||||||
| Affiliates [Member] | ||||||||||||||
| Accounts receivable, net | 96,300 | 72,600 | ||||||||||||
| Other current assets | 11,100 | 3,700 | ||||||||||||
| Other assets | 43,500 | 42,200 | ||||||||||||
| Other liabilities | $ 75,100 | $ 47,800 | ||||||||||||
| ||||||||||||||
Consolidated Statements of Equity and Partners' Capital - USD ($) $ in Thousands |
Total |
Chipeta [Member] |
WES Operating [Member] |
Net Investment by Anadarko [Member] |
Common Units [Member] |
Noncontrolling Interests [Member] |
Noncontrolling Interests [Member]
Chipeta [Member]
|
Noncontrolling Interests [Member]
WES Operating [Member]
|
|||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Balance at Dec. 31, 2017 | [1] | $ 4,995,050 | $ 1,050,171 | $ 1,061,125 | $ 2,883,754 | ||||||||||||||||||
| Increase (Decrease) in Partners' Capital [Roll Forward] | |||||||||||||||||||||||
| Net income (loss) | [1] | 181,010 | 30,522 | 101,005 | 49,483 | ||||||||||||||||||
| Above-market component of swap agreements with Anadarko | [1],[2] | 14,282 | 14,282 | ||||||||||||||||||||
| WES Operating equity transactions, net | [1],[3] | 0 | (2,525) | 2,525 | |||||||||||||||||||
| Distributions to noncontrolling interest owners | [1] | $ (3,353) | $ (94,272) | $ (3,353) | $ (94,272) | ||||||||||||||||||
| Distributions to Partnership unitholders | [1] | (120,140) | (120,140) | ||||||||||||||||||||
| Contributions of equity-based compensation from Anadarko | [1] | 1,470 | 1,470 | ||||||||||||||||||||
| Net pre-acquisition contributions from (distributions to) Anadarko | [1] | 64,251 | 64,251 | ||||||||||||||||||||
| Adjustments of net deferred tax liabilities | [1] | (175) | (175) | ||||||||||||||||||||
| Other | [1] | 150 | 58 | 92 | |||||||||||||||||||
| Balance at Mar. 31, 2018 | [1] | 4,994,493 | 1,145,398 | 1,041,066 | 2,808,029 | ||||||||||||||||||
| Balance at Dec. 31, 2017 | [1] | 4,995,050 | 1,050,171 | 1,061,125 | 2,883,754 | ||||||||||||||||||
| Increase (Decrease) in Partners' Capital [Roll Forward] | |||||||||||||||||||||||
| Net income (loss) | [1] | 248,177 | |||||||||||||||||||||
| Balance at Jun. 30, 2018 | [1] | 4,946,670 | 1,271,015 | 994,418 | 2,681,237 | ||||||||||||||||||
| Increase (Decrease) in Partners' Capital [Roll Forward] | |||||||||||||||||||||||
| Cumulative effect of accounting change | [1] | (43,780) | 629 | (14,209) | (30,200) | ||||||||||||||||||
| Balance at Mar. 31, 2018 | [1] | 4,994,493 | 1,145,398 | 1,041,066 | 2,808,029 | ||||||||||||||||||
| Increase (Decrease) in Partners' Capital [Roll Forward] | |||||||||||||||||||||||
| Net income (loss) | [1] | 67,167 | 32,604 | 67,580 | (33,017) | ||||||||||||||||||
| Above-market component of swap agreements with Anadarko | [1],[2] | 13,839 | 13,839 | ||||||||||||||||||||
| WES Operating equity transactions, net | [1],[3] | 0 | (4,965) | 4,965 | |||||||||||||||||||
| Distributions to noncontrolling interest owners | [1] | (3,068) | (95,809) | (3,068) | (95,809) | ||||||||||||||||||
| Distributions to Partnership unitholders | [1] | (124,518) | (124,518) | ||||||||||||||||||||
| Contributions of equity-based compensation from Anadarko | [1] | 1,331 | 1,331 | ||||||||||||||||||||
| Net pre-acquisition contributions from (distributions to) Anadarko | [1] | 93,013 | 93,013 | ||||||||||||||||||||
| Other | [1] | 192 | 76 | 116 | |||||||||||||||||||
| Balance at Jun. 30, 2018 | [1] | 4,946,670 | 1,271,015 | 994,418 | 2,681,237 | ||||||||||||||||||
| Increase (Decrease) in Partners' Capital [Roll Forward] | |||||||||||||||||||||||
| Cumulative effect of accounting change | [1] | 30 | 9 | 21 | |||||||||||||||||||
| Balance at Dec. 31, 2018 | [1] | 4,892,683 | 1,388,018 | 951,888 | 2,552,777 | ||||||||||||||||||
| Increase (Decrease) in Partners' Capital [Roll Forward] | |||||||||||||||||||||||
| Net income (loss) | 211,979 | 29,116 | 89,544 | 93,319 | |||||||||||||||||||
| Cumulative impact of the Merger transactions | [4] | 0 | 3,169,800 | (3,169,800) | |||||||||||||||||||
| Above-market component of swap agreements with Anadarko | [5] | 7,407 | 7,407 | ||||||||||||||||||||
| WES Operating equity transactions, net | [6] | 0 | (752,796) | 752,796 | |||||||||||||||||||
| Distributions to noncontrolling interest owners | (1,935) | (100,999) | (1,935) | (100,999) | |||||||||||||||||||
| Distributions to Partnership unitholders | (131,910) | (131,910) | |||||||||||||||||||||
| Acquisitions from affiliates | [7] | (2,007,501) | (2,141,827) | 106,856 | 27,470 | ||||||||||||||||||
| Contributions of equity-based compensation from Anadarko | 1,840 | 1,840 | |||||||||||||||||||||
| Net pre-acquisition contributions from (distributions to) Anadarko | 451,591 | 451,591 | |||||||||||||||||||||
| Adjustments of net deferred tax liabilities | 268,727 | 273,102 | (4,375) | ||||||||||||||||||||
| Other | (341) | (332) | (9) | ||||||||||||||||||||
| Balance at Mar. 31, 2019 | 3,591,541 | 0 | 3,437,922 | 153,619 | |||||||||||||||||||
| Balance at Dec. 31, 2018 | [1] | 4,892,683 | 1,388,018 | 951,888 | 2,552,777 | ||||||||||||||||||
| Increase (Decrease) in Partners' Capital [Roll Forward] | |||||||||||||||||||||||
| Net income (loss) | 387,037 | ||||||||||||||||||||||
| Balance at Jun. 30, 2019 | 3,491,210 | 0 | 3,338,646 | 152,564 | |||||||||||||||||||
| Balance at Mar. 31, 2019 | 3,591,541 | 0 | 3,437,922 | 153,619 | |||||||||||||||||||
| Increase (Decrease) in Partners' Capital [Roll Forward] | |||||||||||||||||||||||
| Net income (loss) | 175,058 | 163 | 169,431 | 5,464 | |||||||||||||||||||
| Distributions to noncontrolling interest owners | $ (1,858) | $ (5,667) | $ (1,858) | $ (5,667) | |||||||||||||||||||
| Distributions to Partnership unitholders | (276,324) | (276,324) | |||||||||||||||||||||
| Acquisitions from affiliates | [7] | 0 | (5,510) | 4,493 | 1,017 | ||||||||||||||||||
| Contributions of equity-based compensation from Anadarko | 2,768 | 2,768 | |||||||||||||||||||||
| Net pre-acquisition contributions from (distributions to) Anadarko | 5,347 | 5,347 | |||||||||||||||||||||
| Other | 345 | 356 | (11) | ||||||||||||||||||||
| Balance at Jun. 30, 2019 | $ 3,491,210 | $ 0 | $ 3,338,646 | $ 152,564 | |||||||||||||||||||
| |||||||||||||||||||||||
Consolidated Statements of Equity and Partners' Capital (Parenthetical) - USD ($) $ in Thousands |
3 Months Ended | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mar. 31, 2019 |
Jun. 30, 2018 |
Mar. 31, 2018 |
||||||||||
| WES Operating equity transactions, net | $ 0 | [1] | $ 0 | [2],[3] | $ 0 | [2],[3] | ||||||
| Combined change in Partners' Capital from WES Operating equity transactions, net and net income (loss) attributable to Western Midstream Partners, LP | (634,100) | 95,200 | 129,000 | |||||||||
| Common Units [Member] | ||||||||||||
| WES Operating equity transactions, net | $ (752,796) | [1] | $ (4,965) | [2],[3] | $ (2,525) | [2],[3] | ||||||
| ||||||||||||
Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands |
6 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
|||||||||
| Borrowings, net of debt issuance costs | [1] | $ 2,710,750 | $ 1,525,439 | [2] | ||||||
| Repayments of debt | [3] | 467,595 | 630,000 | [2] | ||||||
| Affiliates [Member] | ||||||||||
| Borrowings, net of debt issuance costs | 11,000 | $ 187,900 | ||||||||
| Repayments of debt | $ 439,600 | |||||||||
| ||||||||||
Consolidated Statements of Operations - WES Operating - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
||||||||||||||||
| Revenues and Other | |||||||||||||||||||
| Revenues and other | $ 685,054 | $ 518,078 | [1] | $ 1,356,937 | $ 1,019,132 | [1] | |||||||||||||
| Equity income, net – affiliates | 63,598 | 49,430 | [1] | 121,590 | 79,659 | [1] | |||||||||||||
| Operating expenses | |||||||||||||||||||
| Cost of product | [2] | 122,877 | 95,656 | [1] | 236,940 | 189,974 | [1] | ||||||||||||
| Operation and maintenance | [2] | 148,431 | 112,789 | [1] | 291,260 | 209,584 | [1] | ||||||||||||
| General and administrative | [2] | 30,027 | 15,597 | [1] | 52,871 | 31,426 | [1] | ||||||||||||
| Property and other taxes | 14,282 | 13,750 | [1] | 30,567 | 28,350 | [1] | |||||||||||||
| Depreciation and amortization | 121,117 | 88,488 | [1] | 235,063 | 173,278 | [1] | |||||||||||||
| Impairments | 797 | 127,184 | [1] | 1,187 | 127,384 | [1] | |||||||||||||
| Total operating expenses | 437,531 | 453,464 | [1] | 847,888 | 759,996 | [1] | |||||||||||||
| Gain (loss) on divestiture and other, net | (1,061) | 170 | [1] | (1,651) | 286 | [1] | |||||||||||||
| Operating income (loss) | 310,060 | 114,214 | [1] | 628,988 | 339,081 | [1] | |||||||||||||
| Interest income – affiliates | 4,225 | 4,225 | [1] | 8,450 | 8,450 | [1] | |||||||||||||
| Interest expense | [3] | (79,472) | (42,245) | [1] | (145,348) | (80,260) | [1] | ||||||||||||
| Other income (expense), net | (58,477) | 1,277 | [1] | (93,683) | 2,094 | [1] | |||||||||||||
| Income (loss) before income taxes | 176,336 | 77,471 | [1] | 398,407 | 269,365 | [1] | |||||||||||||
| Income tax expense (benefit) | 1,278 | 10,304 | [1] | 11,370 | 21,188 | [1] | |||||||||||||
| Net income (loss) | 175,058 | 67,167 | [1] | 387,037 | 248,177 | [1] | |||||||||||||
| Net income (loss) attributable to noncontrolling interest | 5,464 | (33,017) | [1] | 98,783 | 16,466 | [1] | |||||||||||||
| Net income (loss) attributable to Western Midstream Operating, LP | 169,594 | 100,184 | [1] | 288,254 | 231,711 | [1] | |||||||||||||
| Limited partners' interest in net income (loss): | |||||||||||||||||||
| Net income (loss) attributable to Western Midstream Operating, LP | 169,594 | 100,184 | [1] | 288,254 | 231,711 | [1] | |||||||||||||
| Pre-acquisition net (income) loss allocated to Anadarko | (163) | (32,604) | [1] | (29,279) | (63,126) | [1] | |||||||||||||
| Limited partners' interest in net income (loss) | 169,431 | 67,580 | [1] | 258,975 | 168,585 | [1] | |||||||||||||
| Affiliates [Member] | |||||||||||||||||||
| Revenues and Other | |||||||||||||||||||
| Revenues and other | 385,184 | 289,544 | [1] | 763,621 | 574,720 | [1] | |||||||||||||
| Operating expenses | |||||||||||||||||||
| Cost of product | 68,225 | 38,001 | 124,397 | 72,820 | |||||||||||||||
| Operation and maintenance | 32,318 | 26,826 | 71,459 | 49,827 | |||||||||||||||
| General and administrative | 26,892 | 12,262 | 45,786 | 24,950 | |||||||||||||||
| Total operating expenses | 127,435 | 77,089 | 241,642 | 147,597 | |||||||||||||||
| Interest expense | (20) | (1,409) | (1,853) | (1,986) | |||||||||||||||
| Affiliates [Member] | Service Revenues - Fee Based [Member] | |||||||||||||||||||
| Revenues and Other | |||||||||||||||||||
| Revenues and other | 343,484 | 234,512 | [1] | 670,126 | 456,550 | [1] | |||||||||||||
| Affiliates [Member] | Service Revenues - Product Based [Member] | |||||||||||||||||||
| Revenues and Other | |||||||||||||||||||
| Revenues and other | 634 | 538 | [1] | 1,986 | 1,169 | [1] | |||||||||||||
| Affiliates [Member] | Product Sales [Member] | |||||||||||||||||||
| Revenues and Other | |||||||||||||||||||
| Revenues and other | 41,066 | 54,494 | [1] | 91,509 | 117,001 | [1] | |||||||||||||
| Third Parties [Member] | |||||||||||||||||||
| Revenues and Other | |||||||||||||||||||
| Revenues and other | 299,870 | 228,534 | [1] | 593,316 | 444,412 | [1] | |||||||||||||
| Operating expenses | |||||||||||||||||||
| Interest expense | (79,452) | (40,836) | (143,495) | (78,274) | |||||||||||||||
| Third Parties [Member] | Service Revenues - Fee Based [Member] | |||||||||||||||||||
| Revenues and Other | |||||||||||||||||||
| Revenues and other | 250,060 | 197,349 | [1] | 503,392 | 369,084 | [1] | |||||||||||||
| Third Parties [Member] | Service Revenues - Product Based [Member] | |||||||||||||||||||
| Revenues and Other | |||||||||||||||||||
| Revenues and other | 16,041 | 22,124 | [1] | 34,068 | 44,916 | [1] | |||||||||||||
| Third Parties [Member] | Product Sales [Member] | |||||||||||||||||||
| Revenues and Other | |||||||||||||||||||
| Revenues and other | 33,403 | 8,821 | [1] | 55,093 | 29,939 | [1] | |||||||||||||
| Third Parties [Member] | Other [Member] | |||||||||||||||||||
| Revenues and Other | |||||||||||||||||||
| Revenues and other | 366 | 240 | [1] | 763 | 473 | [1] | |||||||||||||
| WES Operating [Member] | |||||||||||||||||||
| Revenues and Other | |||||||||||||||||||
| Revenues and other | 685,054 | 518,078 | [1] | 1,356,937 | 1,019,132 | [1] | |||||||||||||
| Equity income, net – affiliates | 63,598 | 49,430 | [1] | 121,590 | 79,659 | [1] | |||||||||||||
| Operating expenses | |||||||||||||||||||
| Cost of product | [4] | 122,877 | 95,656 | [1] | 236,940 | 189,974 | [1] | ||||||||||||
| Operation and maintenance | [4] | 148,431 | 112,789 | [1] | 291,260 | 209,584 | [1] | ||||||||||||
| General and administrative | [4] | 28,101 | 14,901 | [1] | 48,661 | 29,898 | [1] | ||||||||||||
| Property and other taxes | 14,282 | 13,750 | [1] | 30,567 | 28,350 | [1] | |||||||||||||
| Depreciation and amortization | 121,117 | 88,488 | [1] | 235,063 | 173,278 | [1] | |||||||||||||
| Impairments | 797 | 127,184 | [1] | 1,187 | 127,384 | [1] | |||||||||||||
| Total operating expenses | 435,605 | 452,768 | [1] | 843,678 | 758,468 | [1] | |||||||||||||
| Gain (loss) on divestiture and other, net | (1,061) | 170 | [1] | (1,651) | 286 | [1] | |||||||||||||
| Operating income (loss) | 311,986 | 114,910 | [1] | 633,198 | 340,609 | [1] | |||||||||||||
| Interest income – affiliates | 4,225 | 4,225 | [1] | 8,450 | 8,450 | [1] | |||||||||||||
| Interest expense | [5] | (79,472) | (41,937) | [1] | (145,103) | (78,889) | [1] | ||||||||||||
| Other income (expense), net | (58,482) | 1,229 | [1] | (93,746) | 2,011 | [1] | |||||||||||||
| Income (loss) before income taxes | 178,257 | 78,427 | [1] | 402,799 | 272,181 | [1] | |||||||||||||
| Income tax expense (benefit) | 1,278 | 10,304 | [1] | 11,370 | 21,188 | [1] | |||||||||||||
| Net income (loss) | 176,979 | 68,123 | [1] | 391,429 | 250,993 | [1] | |||||||||||||
| Net income (loss) attributable to noncontrolling interest | 1,967 | 2,811 | [1] | 3,821 | 5,796 | [1] | |||||||||||||
| Net income (loss) attributable to Western Midstream Operating, LP | 175,012 | 65,312 | [1] | 387,608 | 245,197 | [1] | |||||||||||||
| Limited partners' interest in net income (loss): | |||||||||||||||||||
| Net income (loss) attributable to Western Midstream Operating, LP | 175,012 | 65,312 | [1] | 387,608 | 245,197 | [1] | |||||||||||||
| Pre-acquisition net (income) loss allocated to Anadarko | (163) | (32,604) | [1] | (29,279) | (63,126) | [1] | |||||||||||||
| General partner interest in net (income) loss | [6] | 0 | (84,176) | [1] | 0 | (167,615) | [1] | ||||||||||||
| WES Operating [Member] | Common Units [Member] | |||||||||||||||||||
| Limited partners' interest in net income (loss): | |||||||||||||||||||
| Limited partners' interest in net income (loss) | $ (48,417) | $ 9,906 | |||||||||||||||||
| Net income (loss) per common unit - basic and diluted | [1],[6] | $ (0.32) | $ 0.06 | ||||||||||||||||
| WES Operating [Member] | Common and Class C Units [Member] | |||||||||||||||||||
| Limited partners' interest in net income (loss): | |||||||||||||||||||
| Limited partners' interest in net income (loss) | [6] | 174,849 | $ (51,468) | [1] | 358,329 | $ 14,456 | [1] | ||||||||||||
| WES Operating [Member] | Affiliates [Member] | |||||||||||||||||||
| Revenues and Other | |||||||||||||||||||
| Revenues and other | 385,184 | 289,544 | [1] | 763,621 | 574,720 | [1] | |||||||||||||
| Operating expenses | |||||||||||||||||||
| Cost of product | 68,200 | 38,000 | 124,400 | 72,800 | |||||||||||||||
| Operation and maintenance | 32,300 | 26,800 | 71,500 | 49,800 | |||||||||||||||
| General and administrative | 26,380 | 12,044 | 44,878 | 24,523 | |||||||||||||||
| Interest expense | (20) | (1,400) | (1,900) | (2,000) | |||||||||||||||
| WES Operating [Member] | Affiliates [Member] | Service Revenues - Fee Based [Member] | |||||||||||||||||||
| Revenues and Other | |||||||||||||||||||
| Revenues and other | 343,484 | 234,512 | [1] | 670,126 | 456,550 | [1] | |||||||||||||
| WES Operating [Member] | Affiliates [Member] | Service Revenues - Product Based [Member] | |||||||||||||||||||
| Revenues and Other | |||||||||||||||||||
| Revenues and other | 634 | 538 | [1] | 1,986 | 1,169 | [1] | |||||||||||||
| WES Operating [Member] | Affiliates [Member] | Product Sales [Member] | |||||||||||||||||||
| Revenues and Other | |||||||||||||||||||
| Revenues and other | 41,066 | 54,494 | [1] | 91,509 | 117,001 | [1] | |||||||||||||
| WES Operating [Member] | Third Parties [Member] | |||||||||||||||||||
| Revenues and Other | |||||||||||||||||||
| Revenues and other | 299,870 | 228,534 | [1] | 593,316 | 444,412 | [1] | |||||||||||||
| WES Operating [Member] | Third Parties [Member] | Service Revenues - Fee Based [Member] | |||||||||||||||||||
| Revenues and Other | |||||||||||||||||||
| Revenues and other | 250,060 | 197,349 | [1] | 503,392 | 369,084 | [1] | |||||||||||||
| WES Operating [Member] | Third Parties [Member] | Service Revenues - Product Based [Member] | |||||||||||||||||||
| Revenues and Other | |||||||||||||||||||
| Revenues and other | 16,041 | 22,124 | [1] | 34,068 | 44,916 | [1] | |||||||||||||
| WES Operating [Member] | Third Parties [Member] | Product Sales [Member] | |||||||||||||||||||
| Revenues and Other | |||||||||||||||||||
| Revenues and other | 33,403 | 8,821 | [1] | 55,093 | 29,939 | [1] | |||||||||||||
| WES Operating [Member] | Third Parties [Member] | Other [Member] | |||||||||||||||||||
| Revenues and Other | |||||||||||||||||||
| Revenues and other | $ 366 | $ 240 | [1] | $ 763 | $ 473 | [1] | |||||||||||||
| |||||||||||||||||||
Consolidated Statements of Operations - WES Operating (Parenthetical) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
||||||||||||||
| Cost of product | [1] | $ 122,877 | $ 95,656 | [2] | $ 236,940 | $ 189,974 | [2] | ||||||||||
| Operation and maintenance | [1] | 148,431 | 112,789 | [2] | 291,260 | 209,584 | [2] | ||||||||||
| General and administrative | [1] | 30,027 | 15,597 | [2] | 52,871 | 31,426 | [2] | ||||||||||
| Interest expense | [3] | 79,472 | 42,245 | [2] | 145,348 | 80,260 | [2] | ||||||||||
| Affiliates [Member] | |||||||||||||||||
| Cost of product | 68,225 | 38,001 | 124,397 | 72,820 | |||||||||||||
| Operation and maintenance | 32,318 | 26,826 | 71,459 | 49,827 | |||||||||||||
| General and administrative | 26,892 | 12,262 | 45,786 | 24,950 | |||||||||||||
| Interest expense | 20 | 1,409 | 1,853 | 1,986 | |||||||||||||
| WES Operating [Member] | |||||||||||||||||
| Cost of product | [4] | 122,877 | 95,656 | [2] | 236,940 | 189,974 | [2] | ||||||||||
| Operation and maintenance | [4] | 148,431 | 112,789 | [2] | 291,260 | 209,584 | [2] | ||||||||||
| General and administrative | [4] | 28,101 | 14,901 | [2] | 48,661 | 29,898 | [2] | ||||||||||
| Interest expense | [5] | 79,472 | 41,937 | [2] | 145,103 | 78,889 | [2] | ||||||||||
| WES Operating [Member] | Affiliates [Member] | |||||||||||||||||
| Cost of product | 68,200 | 38,000 | 124,400 | 72,800 | |||||||||||||
| Operation and maintenance | 32,300 | 26,800 | 71,500 | 49,800 | |||||||||||||
| General and administrative | 26,380 | 12,044 | 44,878 | 24,523 | |||||||||||||
| Interest expense | $ 20 | $ 1,400 | $ 1,900 | $ 2,000 | |||||||||||||
| |||||||||||||||||
Consolidated Balance Sheets - WES Operating - USD ($) $ in Thousands |
Jun. 30, 2019 |
Dec. 31, 2018 |
[1] | |||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Current assets | ||||||||||||||||||||||||||||||||
| Cash and cash equivalents | $ 95,795 | $ 92,142 | ||||||||||||||||||||||||||||||
| Accounts receivable, net | [2] | 219,924 | 221,164 | |||||||||||||||||||||||||||||
| Other current assets | [3] | 20,466 | 27,056 | |||||||||||||||||||||||||||||
| Total current assets | 336,185 | 340,362 | ||||||||||||||||||||||||||||||
| Note receivable - Anadarko | 260,000 | 260,000 | ||||||||||||||||||||||||||||||
| Property, plant and equipment | ||||||||||||||||||||||||||||||||
| Cost | 11,852,158 | 11,258,773 | ||||||||||||||||||||||||||||||
| Less accumulated depreciation | 3,058,512 | 2,848,420 | ||||||||||||||||||||||||||||||
| Net property, plant and equipment | 8,793,646 | 8,410,353 | ||||||||||||||||||||||||||||||
| Goodwill | 445,800 | 445,800 | ||||||||||||||||||||||||||||||
| Other intangible assets | 825,399 | 841,408 | ||||||||||||||||||||||||||||||
| Equity investments | 1,249,509 | 1,092,088 | ||||||||||||||||||||||||||||||
| Other assets | [4] | 69,992 | 67,194 | |||||||||||||||||||||||||||||
| Total assets | 11,980,531 | 11,457,205 | ||||||||||||||||||||||||||||||
| Current liabilities | ||||||||||||||||||||||||||||||||
| Accounts and imbalance payables | 240,568 | 443,343 | ||||||||||||||||||||||||||||||
| Short-term debt | [5] | 8,381 | 28,000 | |||||||||||||||||||||||||||||
| Accrued ad valorem taxes | 30,641 | 36,986 | ||||||||||||||||||||||||||||||
| Accrued liabilities | 219,726 | 129,148 | ||||||||||||||||||||||||||||||
| Total current liabilities | 499,316 | 637,477 | ||||||||||||||||||||||||||||||
| Long-term liabilities | ||||||||||||||||||||||||||||||||
| Long-term debt | 7,489,448 | 4,787,381 | ||||||||||||||||||||||||||||||
| APCWH Note Payable | [6] | 0 | 427,493 | |||||||||||||||||||||||||||||
| Deferred income taxes | 16,175 | 280,017 | ||||||||||||||||||||||||||||||
| Asset retirement obligations | 320,073 | 300,024 | ||||||||||||||||||||||||||||||
| Other liabilities | [7] | 164,309 | 132,130 | |||||||||||||||||||||||||||||
| Total long-term liabilities | 7,990,005 | 5,927,045 | ||||||||||||||||||||||||||||||
| Total liabilities | 8,489,321 | 6,564,522 | ||||||||||||||||||||||||||||||
| Equity and partners' capital | ||||||||||||||||||||||||||||||||
| Common units and Class C units | 3,338,646 | 951,888 | ||||||||||||||||||||||||||||||
| Net investment by Anadarko | 0 | 1,388,018 | ||||||||||||||||||||||||||||||
| Total partners' capital | 3,338,646 | 2,339,906 | ||||||||||||||||||||||||||||||
| Noncontrolling interest | 152,564 | 2,552,777 | ||||||||||||||||||||||||||||||
| Total equity and partners' capital | 3,491,210 | 4,892,683 | ||||||||||||||||||||||||||||||
| Total liabilities, equity and partners' capital | 11,980,531 | 11,457,205 | ||||||||||||||||||||||||||||||
| WES Operating [Member] | ||||||||||||||||||||||||||||||||
| Current assets | ||||||||||||||||||||||||||||||||
| Cash and cash equivalents | 95,342 | 90,448 | ||||||||||||||||||||||||||||||
| Accounts receivable, net | [8] | 220,352 | 221,373 | |||||||||||||||||||||||||||||
| Other current assets | [9] | 19,794 | 26,181 | |||||||||||||||||||||||||||||
| Total current assets | 335,488 | 338,002 | ||||||||||||||||||||||||||||||
| Note receivable - Anadarko | 260,000 | 260,000 | ||||||||||||||||||||||||||||||
| Property, plant and equipment | ||||||||||||||||||||||||||||||||
| Cost | 11,852,158 | 11,258,773 | ||||||||||||||||||||||||||||||
| Less accumulated depreciation | 3,058,512 | 2,848,420 | ||||||||||||||||||||||||||||||
| Net property, plant and equipment | 8,793,646 | 8,410,353 | ||||||||||||||||||||||||||||||
| Goodwill | 445,800 | 445,800 | ||||||||||||||||||||||||||||||
| Other intangible assets | 825,399 | 841,408 | ||||||||||||||||||||||||||||||
| Equity investments | 1,249,509 | 1,092,088 | ||||||||||||||||||||||||||||||
| Other assets | [10] | 69,992 | 67,194 | |||||||||||||||||||||||||||||
| Total assets | 11,979,834 | 11,454,845 | ||||||||||||||||||||||||||||||
| Current liabilities | ||||||||||||||||||||||||||||||||
| Accounts and imbalance payables | 240,568 | 443,343 | ||||||||||||||||||||||||||||||
| Short-term debt | [11] | 8,381 | 0 | |||||||||||||||||||||||||||||
| Accrued ad valorem taxes | 30,641 | 36,986 | ||||||||||||||||||||||||||||||
| Accrued liabilities | 219,193 | 127,874 | ||||||||||||||||||||||||||||||
| Total current liabilities | 498,783 | 608,203 | ||||||||||||||||||||||||||||||
| Long-term liabilities | ||||||||||||||||||||||||||||||||
| Long-term debt | 7,489,448 | 4,787,381 | ||||||||||||||||||||||||||||||
| APCWH Note Payable | [12] | 0 | 427,493 | |||||||||||||||||||||||||||||
| Deferred income taxes | 16,175 | 280,017 | ||||||||||||||||||||||||||||||
| Asset retirement obligations | 320,073 | 300,024 | ||||||||||||||||||||||||||||||
| Other liabilities | [13] | 164,309 | 132,130 | |||||||||||||||||||||||||||||
| Total long-term liabilities | 7,990,005 | 5,927,045 | ||||||||||||||||||||||||||||||
| Total liabilities | 8,488,788 | 6,535,248 | ||||||||||||||||||||||||||||||
| Equity and partners' capital | ||||||||||||||||||||||||||||||||
| General partner units (zero and 2,583,068 units issued and outstanding at June 30, 2019, and December 31, 2018, respectively) | [14] | 0 | 206,862 | |||||||||||||||||||||||||||||
| Net investment by Anadarko | 0 | 1,388,018 | ||||||||||||||||||||||||||||||
| Total partners' capital | 3,433,251 | 4,861,830 | ||||||||||||||||||||||||||||||
| Noncontrolling interest | 57,795 | 57,767 | ||||||||||||||||||||||||||||||
| Total equity and partners' capital | 3,491,046 | 4,919,597 | ||||||||||||||||||||||||||||||
| Total liabilities, equity and partners' capital | 11,979,834 | 11,454,845 | ||||||||||||||||||||||||||||||
| WES Operating [Member] | Common Units [Member] | ||||||||||||||||||||||||||||||||
| Equity and partners' capital | ||||||||||||||||||||||||||||||||
| Common units and Class C units | 3,433,251 | 2,475,540 | ||||||||||||||||||||||||||||||
| WES Operating [Member] | Class C Units [Member] | ||||||||||||||||||||||||||||||||
| Equity and partners' capital | ||||||||||||||||||||||||||||||||
| Common units and Class C units | [14] | $ 0 | $ 791,410 | |||||||||||||||||||||||||||||
| ||||||||||||||||||||||||||||||||
Consolidated Balance Sheets - WES Operating (Parenthetical) - USD ($) $ in Thousands |
Jun. 30, 2019 |
Dec. 31, 2018 |
||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Common units issued | 453,008,854 | 218,937,797 | ||||||||||||||||||||
| Common units outstanding | 453,008,854 | 218,937,797 | ||||||||||||||||||||
| Accounts receivable, net | [1] | $ 219,924 | $ 221,164 | [2] | ||||||||||||||||||
| Other current assets | [3] | 20,466 | 27,056 | [2] | ||||||||||||||||||
| Other assets | [4] | 69,992 | 67,194 | [2] | ||||||||||||||||||
| Other liabilities | [5] | 164,309 | 132,130 | [2] | ||||||||||||||||||
| Affiliates [Member] | ||||||||||||||||||||||
| Accounts receivable, net | 96,300 | 72,600 | ||||||||||||||||||||
| Other current assets | 11,100 | 3,700 | ||||||||||||||||||||
| Other assets | 43,500 | 42,200 | ||||||||||||||||||||
| Other liabilities | $ 75,100 | $ 47,800 | ||||||||||||||||||||
| WES Operating [Member] | ||||||||||||||||||||||
| General partner units issued | 0 | 2,583,068 | ||||||||||||||||||||
| General partner units outstanding | 0 | 2,583,068 | ||||||||||||||||||||
| Accounts receivable, net | [6] | $ 220,352 | $ 221,373 | [2] | ||||||||||||||||||
| Other current assets | [7] | 19,794 | 26,181 | [2] | ||||||||||||||||||
| Other assets | [8] | 69,992 | 67,194 | [2] | ||||||||||||||||||
| Other liabilities | [9] | $ 164,309 | $ 132,130 | [2] | ||||||||||||||||||
| WES Operating [Member] | Common Units [Member] | ||||||||||||||||||||||
| Common units issued | 318,675,578 | 152,609,285 | ||||||||||||||||||||
| Common units outstanding | 318,675,578 | 152,609,285 | ||||||||||||||||||||
| WES Operating [Member] | Class C Units [Member] | ||||||||||||||||||||||
| Common units issued | 0 | 14,372,665 | ||||||||||||||||||||
| Common units outstanding | 0 | 14,372,665 | ||||||||||||||||||||
| WES Operating [Member] | Affiliates [Member] | ||||||||||||||||||||||
| Accounts receivable, net | $ 96,700 | $ 72,800 | ||||||||||||||||||||
| Other current assets | 11,100 | 3,700 | ||||||||||||||||||||
| Other assets | 43,500 | 42,200 | ||||||||||||||||||||
| Other liabilities | $ 75,100 | $ 47,800 | ||||||||||||||||||||
| ||||||||||||||||||||||
Consolidated Statements of Equity and Partners' Capital - WES Operating - USD ($) $ in Thousands |
Total |
Chipeta [Member] |
Net Investment by Anadarko [Member] |
Common Units [Member] |
Noncontrolling Interest [Member] |
Noncontrolling Interest [Member]
Chipeta [Member]
|
WES Operating [Member] |
WES Operating [Member]
Chipeta [Member]
|
WES Operating [Member]
Net Investment by Anadarko [Member]
|
WES Operating [Member]
Common Units [Member]
|
WES Operating [Member]
Class C Units [Member]
|
WES Operating [Member]
General Partner [Member]
|
WES Operating [Member]
Noncontrolling Interest [Member]
|
WES Operating [Member]
Noncontrolling Interest [Member]
Chipeta [Member]
|
||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Balance at Dec. 31, 2017 | [1] | $ 4,995,050 | $ 1,050,171 | $ 1,061,125 | $ 2,883,754 | $ 5,021,182 | $ 1,050,171 | $ 2,950,010 | $ 780,040 | $ 179,232 | $ 61,729 | |||||||||||||||||||||||||||||||
| Increase (Decrease) in Partners' Capital [Roll Forward] | ||||||||||||||||||||||||||||||||||||||||||
| Net income (loss) | [1] | 181,010 | 30,522 | 101,005 | 49,483 | 182,870 | 30,522 | 59,133 | 6,791 | 83,439 | 2,985 | |||||||||||||||||||||||||||||||
| Above-market component of swap agreements with Anadarko | [1] | 14,282 | [2] | 14,282 | [2] | 14,282 | [3] | 14,282 | [3] | |||||||||||||||||||||||||||||||||
| Amortization of beneficial conversion feature of Class C units | [1] | 0 | (810) | 810 | ||||||||||||||||||||||||||||||||||||||
| Distributions to noncontrolling interest owners | [1] | $ (3,353) | $ (3,353) | $ (3,353) | $ (3,353) | |||||||||||||||||||||||||||||||||||||
| Distributions to WES Operating unitholders | [1] | (120,140) | (120,140) | (216,586) | (140,394) | (76,192) | ||||||||||||||||||||||||||||||||||||
| Contributions of equity-based compensation from Anadarko | [1] | 1,470 | 1,470 | 1,464 | 1,435 | 29 | ||||||||||||||||||||||||||||||||||||
| Net pre-acquisition contributions from (distributions to) Anadarko | [1] | 64,251 | 64,251 | 64,251 | 64,251 | |||||||||||||||||||||||||||||||||||||
| Adjustments of net deferred tax liabilities | [1] | (175) | (175) | (175) | (175) | |||||||||||||||||||||||||||||||||||||
| Other | [1] | 150 | 58 | 92 | 91 | 91 | ||||||||||||||||||||||||||||||||||||
| Balance at Mar. 31, 2018 | [1] | 4,994,493 | 1,145,398 | 1,041,066 | 2,808,029 | 5,020,246 | 1,145,398 | 2,842,612 | 784,105 | 185,812 | 62,319 | |||||||||||||||||||||||||||||||
| Balance at Dec. 31, 2017 | [1] | 4,995,050 | 1,050,171 | 1,061,125 | 2,883,754 | 5,021,182 | 1,050,171 | 2,950,010 | 780,040 | 179,232 | 61,729 | |||||||||||||||||||||||||||||||
| Increase (Decrease) in Partners' Capital [Roll Forward] | ||||||||||||||||||||||||||||||||||||||||||
| Net income (loss) | [1] | 248,177 | 250,993 | |||||||||||||||||||||||||||||||||||||||
| Balance at Jun. 30, 2018 | [1] | 4,946,670 | 1,271,015 | 994,418 | 2,681,237 | 4,972,497 | 1,271,015 | 2,666,799 | 781,057 | 191,564 | 62,062 | |||||||||||||||||||||||||||||||
| Increase (Decrease) in Partners' Capital [Roll Forward] | ||||||||||||||||||||||||||||||||||||||||||
| Cumulative effect of accounting change | [1] | (43,780) | 629 | (14,209) | (30,200) | (43,780) | 629 | (41,135) | (3,536) | (696) | 958 | |||||||||||||||||||||||||||||||
| Balance at Mar. 31, 2018 | [1] | 4,994,493 | 1,145,398 | 1,041,066 | 2,808,029 | 5,020,246 | 1,145,398 | 2,842,612 | 784,105 | 185,812 | 62,319 | |||||||||||||||||||||||||||||||
| Increase (Decrease) in Partners' Capital [Roll Forward] | ||||||||||||||||||||||||||||||||||||||||||
| Net income (loss) | [1] | 67,167 | 32,604 | 67,580 | (33,017) | 68,123 | 32,604 | (47,605) | (3,863) | 84,176 | 2,811 | |||||||||||||||||||||||||||||||
| Above-market component of swap agreements with Anadarko | [1] | 13,839 | [2] | 13,839 | [2] | 13,839 | [3] | 13,839 | [3] | |||||||||||||||||||||||||||||||||
| Amortization of beneficial conversion feature of Class C units | [1] | 0 | (812) | 812 | ||||||||||||||||||||||||||||||||||||||
| Distributions to noncontrolling interest owners | [1] | (3,068) | (3,068) | (3,068) | (3,068) | |||||||||||||||||||||||||||||||||||||
| Distributions to WES Operating unitholders | [1] | (124,518) | (124,518) | (221,133) | (142,683) | (78,450) | ||||||||||||||||||||||||||||||||||||
| Contributions of equity-based compensation from Anadarko | [1] | 1,331 | 1,331 | 1,328 | 1,302 | 26 | ||||||||||||||||||||||||||||||||||||
| Net pre-acquisition contributions from (distributions to) Anadarko | [1] | 93,013 | 93,013 | 93,013 | 93,013 | |||||||||||||||||||||||||||||||||||||
| Other | [1] | 192 | 76 | 116 | 119 | 119 | ||||||||||||||||||||||||||||||||||||
| Balance at Jun. 30, 2018 | [1] | 4,946,670 | 1,271,015 | 994,418 | 2,681,237 | 4,972,497 | 1,271,015 | 2,666,799 | 781,057 | 191,564 | 62,062 | |||||||||||||||||||||||||||||||
| Increase (Decrease) in Partners' Capital [Roll Forward] | ||||||||||||||||||||||||||||||||||||||||||
| Cumulative effect of accounting change | [1] | 30 | 9 | 21 | 30 | 27 | 3 | |||||||||||||||||||||||||||||||||||
| Balance at Dec. 31, 2018 | [1] | 4,892,683 | 1,388,018 | 951,888 | 2,552,777 | 4,919,597 | 1,388,018 | 2,475,540 | 791,410 | 206,862 | 57,767 | |||||||||||||||||||||||||||||||
| Increase (Decrease) in Partners' Capital [Roll Forward] | ||||||||||||||||||||||||||||||||||||||||||
| Net income (loss) | 211,979 | 29,116 | 89,544 | 93,319 | 214,450 | 29,116 | 170,847 | 10,636 | 1,997 | 1,854 | ||||||||||||||||||||||||||||||||
| Cumulative impact of the Merger transactions | 0 | [4] | 3,169,800 | [4] | (3,169,800) | [4] | 0 | [5] | 926,236 | [5] | (802,588) | [5] | (123,648) | [5] | ||||||||||||||||||||||||||||
| Above-market component of swap agreements with Anadarko | 7,407 | [6] | 7,407 | [6] | 7,407 | [7] | 7,407 | [7] | ||||||||||||||||||||||||||||||||||
| Amortization of beneficial conversion feature of Class C units | 0 | (542) | 542 | |||||||||||||||||||||||||||||||||||||||
| Distributions to noncontrolling interest owners | (1,935) | (1,935) | (1,935) | (1,935) | ||||||||||||||||||||||||||||||||||||||
| Distributions to WES Operating unitholders | (131,910) | (131,910) | (263,358) | (178,128) | (85,230) | |||||||||||||||||||||||||||||||||||||
| Acquisitions from affiliates | (2,007,501) | [8] | (2,141,827) | [8] | 106,856 | [8] | 27,470 | [8] | (2,007,501) | [9] | (2,141,827) | [9] | 134,326 | [9] | ||||||||||||||||||||||||||||
| Contributions of equity-based compensation from Anadarko | 1,840 | 1,840 | 1,838 | 1,819 | 19 | |||||||||||||||||||||||||||||||||||||
| Net pre-acquisition contributions from (distributions to) Anadarko | 451,591 | 451,591 | 451,591 | 451,591 | ||||||||||||||||||||||||||||||||||||||
| Adjustments of net deferred tax liabilities | 268,727 | 273,102 | (4,375) | 268,727 | 273,102 | (4,375) | ||||||||||||||||||||||||||||||||||||
| Other | (341) | (332) | (9) | 268 | 268 | |||||||||||||||||||||||||||||||||||||
| Balance at Mar. 31, 2019 | 3,591,541 | 0 | 3,437,922 | 153,619 | 3,591,084 | 0 | 3,533,398 | 0 | 0 | 57,686 | ||||||||||||||||||||||||||||||||
| Balance at Dec. 31, 2018 | [1] | 4,892,683 | 1,388,018 | 951,888 | 2,552,777 | 4,919,597 | 1,388,018 | 2,475,540 | 791,410 | 206,862 | 57,767 | |||||||||||||||||||||||||||||||
| Increase (Decrease) in Partners' Capital [Roll Forward] | ||||||||||||||||||||||||||||||||||||||||||
| Net income (loss) | 387,037 | 391,429 | ||||||||||||||||||||||||||||||||||||||||
| Balance at Jun. 30, 2019 | 3,491,210 | 0 | 3,338,646 | 152,564 | 3,491,046 | 0 | 3,433,251 | 0 | 0 | 57,795 | ||||||||||||||||||||||||||||||||
| Balance at Mar. 31, 2019 | 3,591,541 | 0 | 3,437,922 | 153,619 | 3,591,084 | 0 | 3,533,398 | 0 | 0 | 57,686 | ||||||||||||||||||||||||||||||||
| Increase (Decrease) in Partners' Capital [Roll Forward] | ||||||||||||||||||||||||||||||||||||||||||
| Net income (loss) | 175,058 | 163 | 169,431 | 5,464 | 176,979 | 163 | 174,849 | 1,967 | ||||||||||||||||||||||||||||||||||
| Distributions to noncontrolling interest owners | $ (1,858) | $ (1,858) | $ (1,858) | $ (1,858) | ||||||||||||||||||||||||||||||||||||||
| Distributions to WES Operating unitholders | (276,324) | (276,324) | (283,271) | (283,271) | ||||||||||||||||||||||||||||||||||||||
| Acquisitions from affiliates | 0 | [8] | (5,510) | [8] | 4,493 | [8] | 1,017 | [8] | 0 | [9] | (5,510) | [9] | 5,510 | [9] | ||||||||||||||||||||||||||||
| Contributions of equity-based compensation from Anadarko | 2,768 | 2,768 | 2,765 | 2,765 | ||||||||||||||||||||||||||||||||||||||
| Net pre-acquisition contributions from (distributions to) Anadarko | 5,347 | 5,347 | 5,347 | 5,347 | ||||||||||||||||||||||||||||||||||||||
| Other | 345 | 356 | (11) | |||||||||||||||||||||||||||||||||||||||
| Balance at Jun. 30, 2019 | $ 3,491,210 | $ 0 | $ 3,338,646 | $ 152,564 | $ 3,491,046 | $ 0 | $ 3,433,251 | $ 0 | $ 0 | $ 57,795 | ||||||||||||||||||||||||||||||||
| ||||||||||||||||||||||||||||||||||||||||||
Consolidated Statements of Cash Flows - WES Operating - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | 12 Months Ended | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2019 |
Mar. 31, 2019 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
Dec. 31, 2018 |
|||||||||||||||||||||
| Cash flows from operating activities | |||||||||||||||||||||||||||
| Net income (loss) | $ 175,058 | $ 211,979 | $ 67,167 | [1] | $ 181,010 | [1] | $ 387,037 | $ 248,177 | [1] | ||||||||||||||||||
| Adjustments to reconcile net income (loss) to net cash provided by operating activities: | |||||||||||||||||||||||||||
| Depreciation and amortization | 121,117 | 88,488 | [1] | 235,063 | 173,278 | [1] | |||||||||||||||||||||
| Impairments | 797 | 127,184 | [1] | 1,187 | 127,384 | [1] | $ 230,600 | ||||||||||||||||||||
| Non-cash equity-based compensation expense | 5,493 | 3,165 | [1] | ||||||||||||||||||||||||
| Deferred income taxes | 4,885 | 48,858 | [1] | ||||||||||||||||||||||||
| Accretion and amortization of long-term obligations, net | 2,848 | 3,376 | [1] | ||||||||||||||||||||||||
| Equity income, net – affiliates | (63,598) | (49,430) | [1] | (121,590) | (79,659) | [1] | |||||||||||||||||||||
| Distributions from equity investment earnings – affiliates | 115,483 | 65,525 | [1] | ||||||||||||||||||||||||
| (Gain) loss on divestiture and other, net | 1,061 | (170) | [1] | 1,651 | (286) | [1] | |||||||||||||||||||||
| (Gain) loss on interest-rate swaps | 94,585 | 0 | [1] | ||||||||||||||||||||||||
| Lower of cost or market inventory adjustments | 169 | 151 | [1] | ||||||||||||||||||||||||
| Changes in assets and liabilities: | |||||||||||||||||||||||||||
| (Increase) decrease in accounts receivable, net | 2,668 | (8,572) | [1] | ||||||||||||||||||||||||
| Increase (decrease) in accounts and imbalance payables and accrued liabilities, net | (81,198) | 42,040 | [1] | ||||||||||||||||||||||||
| Change in other items, net | 38,250 | 5,889 | [1] | ||||||||||||||||||||||||
| Net cash provided by operating activities | 686,531 | 629,326 | [1] | ||||||||||||||||||||||||
| Cash flows from investing activities | |||||||||||||||||||||||||||
| Capital expenditures | (704,425) | (1,112,474) | [1] | ||||||||||||||||||||||||
| Investments in equity affiliates | (77,333) | (27,490) | [1] | ||||||||||||||||||||||||
| Distributions from equity investments in excess of cumulative earnings – affiliates | 17,052 | 13,632 | [1] | ||||||||||||||||||||||||
| Net cash used in investing activities | (2,865,168) | (1,287,904) | [1] | ||||||||||||||||||||||||
| Cash flows from financing activities | |||||||||||||||||||||||||||
| Borrowings, net of debt issuance costs | [2] | 2,710,750 | 1,525,439 | [1] | |||||||||||||||||||||||
| Repayments of debt | [3] | (467,595) | (630,000) | [1] | |||||||||||||||||||||||
| Increase (decrease) in outstanding checks | (5,662) | (5,357) | [1] | ||||||||||||||||||||||||
| Distributions to unitholders | [4] | (408,234) | (244,658) | [1] | |||||||||||||||||||||||
| Net contributions from (distributions to) Anadarko | 456,938 | 157,264 | [1] | ||||||||||||||||||||||||
| Above-market component of swap agreements with Anadarko | 0 | 13,839 | 7,407 | [4] | 28,121 | [1],[4] | |||||||||||||||||||||
| Net cash provided by (used in) financing activities | 2,182,290 | 634,307 | [1] | ||||||||||||||||||||||||
| Net increase (decrease) in cash and cash equivalents | 3,653 | (24,271) | [1] | ||||||||||||||||||||||||
| Cash and cash equivalents at beginning of period | [1] | 92,142 | 79,588 | 92,142 | 79,588 | 79,588 | |||||||||||||||||||||
| Cash and cash equivalents at end of period | 95,795 | 55,317 | [1] | 95,795 | 55,317 | [1] | 92,142 | [1] | |||||||||||||||||||
| Supplemental disclosures | |||||||||||||||||||||||||||
| Interest paid, net of capitalized interest | 137,686 | 56,784 | [1] | ||||||||||||||||||||||||
| Taxes paid (reimbursements received) | 96 | (87) | [1] | ||||||||||||||||||||||||
| Accrued capital expenditures | 141,094 | 327,777 | [1] | ||||||||||||||||||||||||
| Chipeta [Member] | |||||||||||||||||||||||||||
| Cash flows from financing activities | |||||||||||||||||||||||||||
| Distributions to Chipeta noncontrolling interest owner | (3,793) | (6,421) | [1] | ||||||||||||||||||||||||
| Affiliates [Member] | |||||||||||||||||||||||||||
| Cash flows from investing activities | |||||||||||||||||||||||||||
| Acquisitions | (2,007,501) | 0 | [1] | ||||||||||||||||||||||||
| Cash flows from financing activities | |||||||||||||||||||||||||||
| Borrowings, net of debt issuance costs | 11,000 | 187,900 | |||||||||||||||||||||||||
| Repayments of debt | (439,600) | ||||||||||||||||||||||||||
| Distributions to unitholders | (153,231) | (101,571) | (255,885) | (199,571) | |||||||||||||||||||||||
| Third Parties [Member] | |||||||||||||||||||||||||||
| Cash flows from investing activities | |||||||||||||||||||||||||||
| Acquisitions | (93,303) | (161,858) | [1] | ||||||||||||||||||||||||
| Proceeds from the sale of assets | 342 | 286 | [1] | ||||||||||||||||||||||||
| WES Operating [Member] | |||||||||||||||||||||||||||
| Cash flows from operating activities | |||||||||||||||||||||||||||
| Net income (loss) | 176,979 | 214,450 | 68,123 | [1] | 182,870 | [1] | 391,429 | 250,993 | [1] | ||||||||||||||||||
| Adjustments to reconcile net income (loss) to net cash provided by operating activities: | |||||||||||||||||||||||||||
| Depreciation and amortization | 121,117 | 88,488 | [1] | 235,063 | 173,278 | [1] | |||||||||||||||||||||
| Impairments | 797 | 127,184 | [1] | 1,187 | 127,384 | [1] | |||||||||||||||||||||
| Non-cash equity-based compensation expense | 4,882 | 3,017 | [1] | ||||||||||||||||||||||||
| Deferred income taxes | 4,885 | 48,858 | [1] | ||||||||||||||||||||||||
| Accretion and amortization of long-term obligations, net | 2,827 | 2,626 | [1] | ||||||||||||||||||||||||
| Equity income, net – affiliates | (63,598) | (49,430) | [1] | (121,590) | (79,659) | [1] | |||||||||||||||||||||
| Distributions from equity investment earnings – affiliates | 115,483 | 65,525 | [1] | ||||||||||||||||||||||||
| (Gain) loss on divestiture and other, net | 1,061 | (170) | [1] | 1,651 | (286) | [1] | |||||||||||||||||||||
| (Gain) loss on interest-rate swaps | 94,585 | 0 | [1] | ||||||||||||||||||||||||
| Lower of cost or market inventory adjustments | 169 | 151 | [1] | ||||||||||||||||||||||||
| Changes in assets and liabilities: | |||||||||||||||||||||||||||
| (Increase) decrease in accounts receivable, net | 2,464 | (8,563) | [1] | ||||||||||||||||||||||||
| Increase (decrease) in accounts and imbalance payables and accrued liabilities, net | (80,458) | 42,088 | [1] | ||||||||||||||||||||||||
| Change in other items, net | 38,069 | 5,578 | [1] | ||||||||||||||||||||||||
| Net cash provided by operating activities | 690,646 | 630,990 | [1] | ||||||||||||||||||||||||
| Cash flows from investing activities | |||||||||||||||||||||||||||
| Capital expenditures | (704,425) | (1,112,474) | [1] | ||||||||||||||||||||||||
| Investments in equity affiliates | (77,333) | (27,490) | [1] | ||||||||||||||||||||||||
| Distributions from equity investments in excess of cumulative earnings – affiliates | 17,052 | 13,632 | [1] | ||||||||||||||||||||||||
| Net cash used in investing activities | (2,865,168) | (1,287,904) | [1] | ||||||||||||||||||||||||
| Cash flows from financing activities | |||||||||||||||||||||||||||
| Borrowings, net of debt issuance costs | [5] | 2,710,750 | 1,525,447 | [1] | |||||||||||||||||||||||
| Repayments of debt | [6] | (439,595) | (630,000) | [1] | |||||||||||||||||||||||
| Increase (decrease) in outstanding checks | (5,662) | (5,357) | [1] | ||||||||||||||||||||||||
| Distributions to unitholders | [7] | (546,629) | (437,719) | [1] | |||||||||||||||||||||||
| Net contributions from (distributions to) Anadarko | 456,938 | 157,264 | [1] | ||||||||||||||||||||||||
| Above-market component of swap agreements with Anadarko | [7] | 7,407 | 28,121 | [1] | |||||||||||||||||||||||
| Net cash provided by (used in) financing activities | 2,179,416 | 631,335 | [1] | ||||||||||||||||||||||||
| Net increase (decrease) in cash and cash equivalents | 4,894 | (25,579) | [1] | ||||||||||||||||||||||||
| Cash and cash equivalents at beginning of period | [1] | $ 90,448 | $ 78,814 | 90,448 | 78,814 | 78,814 | |||||||||||||||||||||
| Cash and cash equivalents at end of period | 95,342 | 53,235 | [1] | 95,342 | 53,235 | [1] | $ 90,448 | [1] | |||||||||||||||||||
| Supplemental disclosures | |||||||||||||||||||||||||||
| Interest paid, net of capitalized interest | 137,452 | 56,155 | [1] | ||||||||||||||||||||||||
| Taxes paid (reimbursements received) | 96 | (87) | [1] | ||||||||||||||||||||||||
| Accrued capital expenditures | 141,094 | 327,777 | [1] | ||||||||||||||||||||||||
| WES Operating [Member] | Chipeta [Member] | |||||||||||||||||||||||||||
| Cash flows from financing activities | |||||||||||||||||||||||||||
| Distributions to Chipeta noncontrolling interest owner | (3,793) | (6,421) | [1] | ||||||||||||||||||||||||
| WES Operating [Member] | Affiliates [Member] | |||||||||||||||||||||||||||
| Cash flows from investing activities | |||||||||||||||||||||||||||
| Acquisitions | (2,007,501) | 0 | [1] | ||||||||||||||||||||||||
| Cash flows from financing activities | |||||||||||||||||||||||||||
| Borrowings, net of debt issuance costs | 11,000 | 187,900 | |||||||||||||||||||||||||
| Repayments of debt | (439,600) | ||||||||||||||||||||||||||
| Distributions to unitholders | $ (283,271) | $ (127,204) | (448,173) | (251,368) | |||||||||||||||||||||||
| WES Operating [Member] | Third Parties [Member] | |||||||||||||||||||||||||||
| Cash flows from investing activities | |||||||||||||||||||||||||||
| Acquisitions | (93,303) | (161,858) | [1] | ||||||||||||||||||||||||
| Proceeds from the sale of assets | $ 342 | $ 286 | [1] | ||||||||||||||||||||||||
| |||||||||||||||||||||||||||
Consolidated Statements of Cash Flows - WES Operating (Parenthetical) - USD ($) $ in Thousands |
6 Months Ended | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
|||||||||||||
| Borrowings, net of debt issuance costs | [1] | $ 2,710,750 | $ 1,525,439 | [2] | ||||||||||
| Repayments of debt | [3] | 467,595 | 630,000 | [2] | ||||||||||
| WES Operating [Member] | ||||||||||||||
| Borrowings, net of debt issuance costs | [4] | 2,710,750 | 1,525,447 | [2] | ||||||||||
| Repayments of debt | [5] | 439,595 | 630,000 | [2] | ||||||||||
| Affiliates [Member] | ||||||||||||||
| Borrowings, net of debt issuance costs | 11,000 | 187,900 | ||||||||||||
| Repayments of debt | 439,600 | |||||||||||||
| Affiliates [Member] | WES Operating [Member] | ||||||||||||||
| Borrowings, net of debt issuance costs | 11,000 | $ 187,900 | ||||||||||||
| Repayments of debt | $ 439,600 | |||||||||||||
| ||||||||||||||
Description of Business and Basis of Presentation |
6 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Accounting Policies [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Description of Business and Basis of Presentation | 1. DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION General. Western Midstream Partners, LP (formerly Western Gas Equity Partners, LP) is a Delaware master limited partnership formed in September 2012. Western Midstream Operating, LP (formerly Western Gas Partners, LP, and together with its subsidiaries, “WES Operating”) is a Delaware limited partnership formed by Anadarko Petroleum Corporation 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, and excludes WES Operating. The Partnership’s general partner, Western Midstream Holdings, LLC (the “general partner”), is a wholly owned subsidiary of Anadarko Petroleum Corporation. “Anadarko” refers to Anadarko Petroleum Corporation and its subsidiaries, excluding the Partnership and the general partner, and “affiliates” refers to subsidiaries of Anadarko, excluding the Partnership, but including equity interests in Fort Union Gas Gathering, LLC (“Fort Union”), White Cliffs Pipeline, LLC (“White Cliffs”), Rendezvous Gas Services, LLC (“Rendezvous”), Enterprise EF78 LLC (the “Mont Belvieu JV”), Texas Express Pipeline LLC (“TEP”), Texas Express Gathering LLC (“TEG”), Front Range Pipeline LLC (“FRP”), Whitethorn Pipeline Company LLC (“Whitethorn LLC”), Cactus II Pipeline LLC (“Cactus II”), Saddlehorn Pipeline Company, LLC (“Saddlehorn”), Panola Pipeline Company, LLC (“Panola”), Mi Vida JV LLC (“Mi Vida”), Ranch Westex JV LLC (“Ranch Westex”) and Red Bluff Express Pipeline, LLC (“Red Bluff Express”). See Note 3. The interests in TEP, TEG and FRP are referred to collectively as the “TEFR Interests.” “MGR assets” refers to the Red Desert complex and the Granger straddle plant. The “West Texas complex” refers to the Delaware Basin Midstream, LLC (“DBM”) complex and DBJV and Haley systems. 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 addition, in its capacity as a processor of natural gas, the Partnership also buys and sells natural gas, NGLs and condensate on behalf of itself and as agent for its customers under certain of its contracts. The Partnership provides these midstream services for Anadarko, as well as for third-party customers. As of June 30, 2019, the Partnership’s assets and investments consisted of the following:
These assets and investments are located in the Rocky Mountains (Colorado, Utah and Wyoming), North-central Pennsylvania, Texas and New Mexico. 1. DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION (CONTINUED) Merger transactions. On February 28, 2019, the Partnership, WES Operating, Anadarko and certain of their affiliates consummated the transactions contemplated by the Contribution Agreement and Agreement and Plan of Merger (the “Merger Agreement”), dated as of November 7, 2018, pursuant to which, among other things, Clarity Merger Sub, LLC, a wholly owned subsidiary of the Partnership, merged with and into WES Operating, with WES Operating continuing as the surviving entity and a subsidiary of the Partnership (the “Merger”). In connection with the closing of the Merger, (i) the common units of WES Operating, which previously traded under the symbol “WES,” ceased to trade on the New York Stock Exchange (“NYSE”), (ii) the common units of the Partnership, which previously traded under the symbol “WGP,” began to trade on the NYSE under the symbol “WES,” (iii) the Partnership changed its name from Western Gas Equity Partners, LP to Western Midstream Partners, LP and (iv) WES Operating changed its name from Western Gas Partners, LP to Western Midstream Operating, LP. The Merger Agreement also provided that the Partnership, WES Operating and Anadarko cause their respective affiliates to cause the following transactions, among others, to occur immediately prior to the Merger becoming effective in the order as follows: (1) Anadarko E&P Onshore LLC and WGR Asset Holding Company LLC (“WGRAH”) (the “Contributing Parties”) contributed to WES Operating all of their interests in each of Anadarko Wattenberg Oil Complex LLC, Anadarko DJ Oil Pipeline LLC, Anadarko DJ Gas Processing LLC, Wamsutter Pipeline LLC, DBM Oil Services, LLC, Anadarko Pecos Midstream LLC, Anadarko Mi Vida LLC and APC Water Holdings 1, LLC (“APCWH”) to WGR Operating, LP, Kerr-McGee Gathering LLC and DBM (each wholly owned by WES Operating) in exchange for aggregate consideration of $1.814 billion in cash from WES Operating, minus the outstanding amount payable pursuant to an intercompany note (the “APCWH Note Payable”) assumed by WES Operating in connection with the transaction, and 45,760,201 WES Operating common units; (2) APC Midstream Holdings, LLC (“AMH”) sold to WES Operating its interests in Saddlehorn and Panola in exchange for aggregate consideration of $193.9 million in cash; (3) WES Operating contributed cash in an amount equal to the outstanding balance of the APCWH Note Payable immediately prior to the effective time of the Merger to APCWH, and APCWH paid such cash to Anadarko in satisfaction of the APCWH Note Payable; (4) the Class C units converted into WES Operating common units on a one-for-one basis; and (5) WES Operating and WES Operating GP caused the conversion of the incentive distribution rights (“IDRs”) and the 2,583,068 general partner units in WES Operating held by WES Operating GP into a non-economic general partner interest in WES Operating and 105,624,704 WES Operating common units. The 45,760,201 WES Operating common units issued to the Contributing Parties, less 6,375,284 WES Operating common units retained by WGRAH, converted into the right to receive an aggregate of 55,360,984 common units of the Partnership upon the consummation of the Merger. Each WES Operating common unit issued and outstanding immediately prior to the closing of the Merger (other than WES Operating common units owned by the Partnership and WES Operating GP, and certain common units held by subsidiaries of Anadarko) was converted into the right to receive 1.525 common units of the Partnership. See Note 10 for additional information. Occidental merger. On May 9, 2019, Anadarko, the indirect general partner and majority unitholder of the Partnership, which is the indirect general partner and majority unitholder of WES Operating, (i) terminated its agreement and plan of merger with Chevron Corporation and (ii) entered into the Agreement and Plan of Merger with Occidental Petroleum Corporation (“Occidental”) and Baseball Merger Sub 1, Inc., pursuant to which, and subject to the conditions of the agreement, all outstanding shares of Anadarko will be acquired by Occidental in a stock and cash transaction. Occidental’s acquisition by merger of Anadarko (“Occidental Merger”) is subject to Anadarko stockholder approval and other customary closing conditions. Anadarko is holding a special meeting of its stockholders on August 8, 2019, for holders of record as of July 11, 2019, to vote on the proposal necessary to complete the Occidental Merger. Assuming all closing conditions are satisfied, including obtaining the requisite approval from the Anadarko stockholders, Occidental and Anadarko expect the Occidental Merger to close shortly after the special meeting of Anadarko stockholders. 1. DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION (CONTINUED) Basis of presentation. The following table outlines the ownership interests and the accounting method of consolidation used in the consolidated financial statements for entities not wholly owned:
The consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”). The consolidated financial statements include the accounts of the Partnership and entities in which it holds a controlling financial interest, including WES Operating and WES Operating GP. All significant intercompany transactions have been eliminated. Certain information and note disclosures commonly included in annual financial statements have been condensed or omitted pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”). Accordingly, the accompanying consolidated financial statements and notes should be read in conjunction with the Partnership and WES Operating’s 2018 Forms 10-K, as filed with the SEC on February 20, 2019, certain sections of which were recast to reflect the results attributable to AMA (as defined in Note 3) in the Partnership and WES Operating’s Current Reports on Form 8-K, as filed with the SEC on May 17, 2019. 1. DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION (CONTINUED) 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 and Note 5), (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) the senior secured revolving credit facility (“WGP RCF”) until its repayment in March 2019. See Note 10. Adjustments to previously issued financial statements. The consolidated statements of operations for the three and six months ended June 30, 2018, include adjustments to revenue and cost of product expense of the following amounts: (i) $24.7 million and $39.0 million, respectively, increase in Service revenues - fee based, (ii) $7.3 million and $12.6 million, respectively, increase in Product sales and (iii) $32.0 million and $51.6 million, respectively, increase in Cost of product. During the third quarter of 2018, management determined that under Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Customers (Topic 606) adopted on January 1, 2018, the Partnership’s marketing affiliate was acting as its agent in certain product sales transactions on behalf of the Partnership and in performing marketing services on behalf of the Partnership’s customers. The adjustments have no impact to Operating income (loss), Net income (loss), the balance sheets, cash flows or any non-GAAP metric the Partnership uses to evaluate its operations (see Key Performance Metrics under Part I, Item 2 of this Form 10-Q) and are not considered material to the results of operations for the three and six months ended June 30, 2018. Presentation of Partnership assets. The term “Partnership assets” includes both the assets owned and the interests accounted for under the equity method by the Partnership, through its partnership interests in WES Operating as of June 30, 2019 (see Note 8). Because the Partnership owns the entire non-economic general partner interest in and controls WES Operating GP, and the general partner is controlled by Anadarko, each of the Partnership’s acquisitions of assets from Anadarko has been considered a transfer of net assets between entities under common control. As such, assets acquired from Anadarko were initially recorded at Anadarko’s historic carrying value, which did not correlate to the total acquisition price paid by the Partnership. Further, after an acquisition of assets from Anadarko, the Partnership is required to recast its financial statements to include the activities of such assets from the date of common control. For those periods requiring recast, the consolidated financial statements for periods prior to the acquisition of assets from Anadarko are prepared from Anadarko’s historical cost-basis accounts and may not necessarily be indicative of the actual results of operations that would have occurred if the Partnership had owned the assets during the periods reported. Net income (loss) attributable to the assets acquired from Anadarko for periods prior to the Partnership’s acquisition of such assets is not allocated to the limited partners. 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 methods considered reasonable. Changes in facts and circumstances or additional information may result in revised estimates and actual results may differ from these estimates. Effects on the business, financial condition and results of operations resulting from revisions to estimates are recognized when the facts that give rise to the revisions become known. The information included herein reflects all normal recurring adjustments which are, in the opinion of management, necessary for a fair presentation of the consolidated financial statements, and certain prior-period amounts have been reclassified to conform to the current-year presentation. 1. DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION (CONTINUED) Noncontrolling interests. For periods subsequent to the consummation of the Merger, the Partnership’s noncontrolling interests in the consolidated financial statements consisted of (i) the 25% interest in Chipeta held by a third-party member and (ii) the 2.0% limited partner interest in WES Operating held by a subsidiary of Anadarko. For periods prior to the consummation of the Merger, the Partnership’s noncontrolling interests in the consolidated financial statements consisted of (i) the 25% interest in Chipeta held by a third-party member, (ii) the publicly held limited partner interests in WES Operating, (iii) the common units issued by WES Operating to subsidiaries of Anadarko as part of the consideration paid for prior acquisitions from Anadarko, and (iv) the Class C units issued by WES Operating to a subsidiary of Anadarko as part of the funding for the acquisition of DBM. For all periods presented, WES Operating’s noncontrolling interest in the consolidated financial statements consisted of the 25% interest in Chipeta held by a third-party member. See Note 5. When WES Operating issues equity, the carrying amount of the noncontrolling interest reported by the Partnership is adjusted to reflect the noncontrolling ownership interest in WES Operating. The resulting impact of such noncontrolling interest adjustment on the Partnership’s interest in WES Operating is reflected as an adjustment to the Partnership’s partners’ capital. Shutdown of gathering systems. In May 2018, after assessing a number of factors, with safety and protection of the environment as the primary focus, the Partnership decided to take the Kitty Draw gathering system in Wyoming (part of the Hilight system) and the Third Creek gathering system in Colorado (part of the DJ Basin complex) permanently out of service. Results for the three and six months ended June 30, 2018, reflect (i) an accrual of $10.9 million in anticipated costs associated with the shutdown of the systems, recorded as a reduction in affiliate Product sales in the consolidated statements of operations and (ii) impairment expense of $127.2 million associated with reducing the net book value of the gathering systems and additional asset retirement obligation. During the first quarter of 2019, $5.5 million of the accrual related to the Kitty Draw gathering system was reversed due to producer settlements being less than initial estimates. 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. Recently adopted accounting standards. ASU 2016-02, Leases (Topic 842) requires lessees to recognize a lease liability and a right-of-use (“ROU”) asset for all leases, including operating leases, with a term greater than 12 months on the balance sheet. This ASU modifies the definition of a lease and outlines the recognition, measurement, presentation, and disclosure of leasing arrangements by both lessees and lessors. The Partnership adopted this standard on January 1, 2019, using the modified retrospective method applied to all leases that existed on January 1, 2019, and prior-period financial statements were not adjusted. The Partnership elected not to reassess contracts that commenced prior to adoption, to continue applying its current accounting policy for existing or expired land easements and not to recognize ROU assets or lease liabilities for short-term leases. Leases. The Partnership determines if an arrangement is a lease based on rights and obligations conveyed at inception of a contract. At the commencement date, a lease is classified as either operating or finance, and ROU assets and lease liabilities are recognized based on the present value of future lease payments over the lease term. As the rate implicit in the Partnership’s leases is generally not readily determinable, the Partnership discounts lease liabilities using the Partnership’s incremental borrowing rate at the commencement date. Non-lease components associated with leases that begin in 2019 or later are accounted for as part of the lease component, and prepaid lease payments are included in ROU assets. Options to extend or terminate a lease are included in the lease term when it is reasonably certain that the Partnership will exercise that option. Leases of 12 months or less are not recognized on the consolidated balance sheets. Lease cost is generally recognized on a straight-line basis over the lease term. For finance leases, interest expense is recognized over the lease term using the effective interest method. Variable lease payments are recognized when the obligation for those payments is incurred.
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Revenue from Contracts with Customers |
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| Revenue from Contracts with Customers | 2. REVENUE FROM CONTRACTS WITH CUSTOMERS The following table summarizes revenue from contracts with customers:
Contract balances. Receivables from customers, which are included in Accounts receivable, net on the consolidated balance sheets were $262.4 million and $214.3 million as of June 30, 2019, and December 31, 2018, respectively. Contract assets primarily relate to accrued deficiency fees the Partnership expects to charge customers once the related performance periods are completed and revenue accrued but not yet billed under cost of service contracts with fixed and variable fees. The following table summarizes the current period activity related to contract assets from contracts with customers:
2. REVENUE FROM CONTRACTS WITH CUSTOMERS (CONTINUED) Contract liabilities primarily relate to (i) 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, (ii) fixed and variable fees under cost of service contracts that are received from customers for which revenue recognition is deferred and (iii) aid in construction payments received from customers that must be recognized over the expected period of customer benefit. The following table summarizes the current period activity related to contract liabilities from contracts with customers:
Transaction price allocated to remaining performance obligations. Revenues expected to be recognized from certain performance obligations that are unsatisfied (or partially unsatisfied) as of June 30, 2019, are reflected in the following table. The Partnership applies the optional exemptions in 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.
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| Acquisitions and Divestitures | 3. ACQUISITIONS AND DIVESTITURES AMA acquisition. In February 2019, WES Operating acquired the following assets from Anadarko (see Note 1), which are collectively referred to as the Anadarko Midstream Assets (“AMA”):
3. ACQUISITIONS AND DIVESTITURES (CONTINUED) Because the acquisition of AMA was a transfer of net assets between entities under common control, the Partnership and WES Operating’s historical financial statements previously filed with the SEC have been recast in this Form 10-Q to include the results attributable to AMA as if it was owned for all periods presented. The consolidated financial statements for periods prior to the acquisition of AMA have been prepared from Anadarko’s historical cost-basis accounts and may not necessarily be indicative of the actual results of operations that would have occurred if AMA had been owned during the periods reported. The following tables present the impact of AMA on Revenues and other, Equity income, net – affiliates and Net income (loss) as presented in the Partnership and WES Operating’s historical consolidated statements of operations:
Red Bluff Express acquisition. In January 2019, the Partnership acquired a 30% interest in Red Bluff Express, which owns a natural gas pipeline operated by a third party connecting processing plants in Reeves and Loving Counties, Texas to the WAHA hub in Pecos County, Texas. The Partnership acquired its 30% interest from a third party via an initial net investment of $92.5 million, which represented its share of costs incurred up to the date of acquisition. The initial investment was funded with cash on hand and the interest in Red Bluff Express is accounted for under the equity method. See Note 8. 3. ACQUISITIONS AND DIVESTITURES (CONTINUED) Whitethorn LLC acquisition. In June 2018, the Partnership acquired a 20% interest in Whitethorn LLC, which owns a crude oil and condensate pipeline that originates in Midland, Texas and terminates in Sealy, Texas (the “Midland-to-Sealy pipeline”) and related storage facilities (collectively referred to as “Whitethorn”). A third party operates Whitethorn and oversees the related commercial activities. In connection with its investment in Whitethorn LLC, the Partnership shares proportionally in the commercial activities. The Partnership acquired its 20% interest via a $150.6 million net investment, which was funded with cash on hand and is accounted for under the equity method. See Note 8. Cactus II acquisition. In June 2018, the Partnership acquired a 15% interest in Cactus II, which will own a crude oil pipeline operated by a third party (the “Cactus II pipeline”) connecting West Texas to the Corpus Christi area. The Cactus II pipeline is under construction and is expected to become operational in late 2019. The Partnership acquired its 15% interest from a third party via an initial net investment of $12.1 million, which represented its share of costs incurred up to the date of acquisition. The initial investment was funded with cash on hand and the interest in Cactus II is accounted for under the equity method. See Note 8.
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Partnership Distributions |
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| Distributions Made to Members or Limited Partners [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Partnership Distributions | 4. PARTNERSHIP DISTRIBUTIONS The partnership agreement requires the Partnership to distribute all of its available cash (as defined in its partnership agreement) to unitholders of record on the applicable record date within 55 days of the end of each quarter. The Board of Directors of the general partner (the “Board of Directors”) declared the following cash distributions to the Partnership’s unitholders for the periods presented:
Available cash. The amount of available cash (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 reserves to fund future capital expenditures; to comply with applicable laws, debt instruments or other agreements; or to provide funds for distributions to its unitholders 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. Working capital borrowings may only be those that, at the time of such borrowings, were intended to be repaid within 12 months. In all cases, working capital borrowings are used solely for working capital purposes or to fund distributions to partners. 4. PARTNERSHIP DISTRIBUTIONS (CONTINUED) WES Operating partnership distributions. For the 2018 periods noted below, WES Operating paid the following cash distributions to WES Operating’s common and general partner unitholders:
Immediately prior to the closing of the Merger, the IDRs and the general partner units were converted into a non-economic general partner interest in WES Operating and WES Operating common units, and upon consummation of the Merger, all WES Operating common units held by the public and subsidiaries of Anadarko (other than common units held by the Partnership, WES Operating GP and 6.4 million common units held by a subsidiary of Anadarko) were converted into common units of the Partnership. Beginning in the first quarter of 2019, WES Operating makes distributions to the Partnership and a subsidiary of Anadarko in respect of their proportionate share of limited partner interests in WES Operating. For the quarter ended March 31, 2019, WES Operating distributed $283.3 million to its limited partners. For the quarter ended June 30, 2019, WES Operating will distribute $288.1 million to its limited partners. See Note 5. WES Operating Class C unit distributions. Prior to the closing of the Merger, WES Operating’s Class C units received quarterly distributions at a rate equivalent to WES Operating’s publicly-traded common units. The distributions were paid in the form of additional Class C Units (“PIK Class C units”) and were disregarded with respect to WES Operating’s distributions of WES Operating’s available cash. The number of PIK Class C units issued in connection with a distribution payable on the Class C units was determined by dividing the corresponding distribution attributable to the Class C units by the volume-weighted-average price of WES Operating’s common units for the ten days immediately preceding the payment date for the common unit distribution, less a 6% discount. WES Operating recorded the PIK Class C unit distributions at fair value at the time of issuance. This Level 2 fair value measurement used WES Operating’s unit price as a significant input in the determination of the fair value. See Note 5 for further discussion of the Class C units. In February 2019, immediately prior to the closing of the Merger, all outstanding Class C units converted into WES Operating common units on a one-for-one basis (see Note 1). WES Operating’s general partner interest and incentive distribution rights. Prior to the closing of the Merger, WES Operating GP was entitled to 1.5% of all quarterly distributions that WES Operating made prior to its liquidation and, as the former holder of the IDRs, was entitled to incentive distributions at the maximum distribution sharing percentage of 48.0% for all prior periods presented. Immediately prior to the closing of the Merger, the IDRs and the general partner units converted into a non-economic general partner interest in WES Operating and WES Operating common units (see Note 1).
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Equity and Partners' Capital |
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| 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 NYSE under the symbol “WES.” As of June 30, 2019, Anadarko held 251,197,617 common units, representing a 55.5% limited partner interest in the Partnership, and, through its ownership of the general partner, Anadarko indirectly held the entire non-economic general partner interest in the Partnership. The public held 201,811,237 common units, representing a 44.5% limited partner interest in the Partnership. In February 2019, the Partnership issued common units in connection with the closing of the Merger (see Note 1) as follows:
Holdings of WES Operating equity. As of June 30, 2019, (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) Anadarko, 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). WES Operating interests. The following table summarizes WES Operating’s units issued during the six months ended June 30, 2019:
5. EQUITY AND PARTNERS’ CAPITAL (CONTINUED) WES Operating Class C units. In November 2014, WES Operating issued 10,913,853 Class C units to AMH, pursuant to a Unit Purchase Agreement with Anadarko and AMH. The Class C units were issued to partially fund the acquisition of DBM. The Class C units were issued at a discount to the then-current market price of the common units into which they were convertible. This discount, totaling $34.8 million, represented a beneficial conversion feature, and at issuance, was reflected as an increase in WES Operating common unitholders’ capital and a decrease in Class C unitholder capital to reflect the fair value of the Class C units at issuance. The beneficial conversion feature was considered a non-cash distribution that was recognized from the date of issuance through the date of conversion, resulting in an increase in Class C unitholder capital and a decrease in common unitholders’ capital as amortized. The beneficial conversion feature was amortized assuming the extended conversion date of March 1, 2020, using the effective yield method. The impact of the beneficial conversion feature amortization was included in the calculation of earnings per unit (see WES Operating’s net income (loss) per common unit below). All outstanding Class C units converted into WES Operating common units on a one-for-one basis immediately prior to the closing of the Merger (see Note 1). Partnership’s net income (loss) per common unit. The Partnership’s 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. Net income (loss) per common unit is calculated assuming that cash distributions are equal to the net income attributable to the Partnership. Net income (loss) attributable to the Partnership assets (as defined in Note 1) acquired from Anadarko for periods prior to the acquisition of the assets is not allocated to the limited partners when calculating net income (loss) per common unit. Net income equal to the amount of available cash (as defined by the partnership agreement) is allocated to the Partnership’s common unitholders consistent with actual cash distributions. WES Operating’s net income (loss) per common unit. For periods subsequent to the closing of the Merger, net income (loss) per common unit for WES Operating is not calculated as it no longer has publicly traded units. For periods prior to the closing of the Merger, Net income (loss) attributable to Western Midstream Operating, LP earned on and subsequent to the date of acquisition of the Partnership assets was allocated as discussed below. Net income (loss) attributable to the Partnership assets acquired from Anadarko for periods prior to the acquisition of the assets was not allocated to the unitholders for purposes of calculating net income (loss) per common unit. General partner. The general partner’s allocation was equal to cash distributions plus its portion of undistributed earnings or losses. Specifically, net income equal to the amount of available cash (as defined by WES Operating’s partnership agreement) was allocated to the general partner consistent with actual cash distributions and capital account allocations, including incentive distributions. Undistributed earnings (net income in excess of distributions) or undistributed losses (available cash in excess of net income) was then allocated to the general partner in accordance with its weighted-average ownership percentage during each period. Common and Class C unitholders. The Class C units were considered a participating security because they participated in distributions with common units according to a predetermined formula (see Note 4). The common and Class C unitholders’ allocation was equal to their cash distributions plus their respective allocations of undistributed earnings or losses. Specifically, net income equal to the amount of available cash (as defined by the WES Operating partnership agreement) was allocated to the common and Class C unitholders consistent with actual cash distributions and capital account allocations. Undistributed earnings or undistributed losses were then allocated to the common and Class C unitholders in accordance with their respective weighted-average ownership percentages during each period. The common unitholder allocation also included the impact of the amortization of the Class C units beneficial conversion feature. The Class C unitholder allocation was similarly impacted by the amortization of the Class C units beneficial conversion feature (see WES Operating Class C units above). 5. EQUITY AND PARTNERS’ CAPITAL (CONTINUED) Calculation of net income (loss) per unit. Basic net income (loss) per common unit was calculated by dividing the net income (loss) attributable to common unitholders by the weighted-average number of common units outstanding during the period. The common units issued in connection with acquisitions and equity offerings were included on a weighted-average basis for periods they were outstanding. Diluted net income (loss) per common unit was calculated by dividing the sum of (i) the net income (loss) attributable to common units and (ii) the net income (loss) attributable to the Class C units as a participating security, by the sum of the weighted-average number of common units outstanding plus the dilutive effect of the weighted-average number of outstanding Class C units. The following table illustrates the calculation of WES Operating’s net income (loss) per common unit:
(2) The impact of Class C units would be anti-dilutive for the periods presented.
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Transactions with Affiliates |
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| Related Party Fees and Other Arrangements, Limited Liability Company (LLC) or Limited Partnership (LP) [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Transactions with Affiliates | 6. TRANSACTIONS WITH AFFILIATES Affiliate transactions. Revenues from affiliates include amounts earned by the Partnership from services provided to Anadarko as well as from the sale of natural gas, condensate and NGLs to Anadarko. Anadarko sells such natural gas, condensate and NGLs as an agent on behalf of either the Partnership or the Partnership’s customers. When such sales are on the Partnership’s customers’ behalf, the Partnership recognizes associated service revenues and cost of product expense. When such sales are on the Partnership’s behalf, the Partnership recognizes product sales revenues based on the Anadarko sales price to the third party and cost of product expense associated with these sales activities. In addition, the Partnership purchases natural gas, condensate and NGLs from an affiliate of Anadarko pursuant to gas purchase agreements. Operation and maintenance expense includes amounts accrued for or paid to affiliates for the operation of the Partnership assets, whether in providing services to affiliates or to third parties, including field labor, measurement and analysis, and other disbursements. A portion of general and administrative expenses is paid by Anadarko, which results in affiliate transactions pursuant to the reimbursement provisions of the omnibus agreements of the Partnership and WES Operating. Affiliate expenses do not bear a direct relationship to affiliate revenues, and third-party expenses do not bear a direct relationship to third-party revenues. Merger transactions. As discussed in more detail in Note 1, on February 28, 2019, the Partnership, WES Operating, Anadarko and certain of their affiliates consummated the Merger and the other transactions contemplated in the Merger Agreement, which included the acquisition of AMA from Anadarko. See Note 3. Cash management. Anadarko operates a cash management system whereby excess cash from most of its subsidiaries’ separate bank accounts is generally swept to centralized accounts. Prior to the acquisition of Partnership assets, third-party sales and purchases related to such assets were received or paid in cash by Anadarko within its centralized cash management system. The outstanding affiliate balances were entirely settled through an adjustment to net investment by Anadarko in connection with the acquisition of the Partnership assets. Subsequent to the acquisition of Partnership assets from Anadarko, transactions related to such assets are cash-settled directly with third parties and with Anadarko affiliates. Chipeta cash settles its transactions directly with third parties and Anadarko, as well as with the other subsidiaries of the Partnership. Note receivable - Anadarko. In May 2008, WES Operating loaned $260.0 million to Anadarko in exchange for a 30-year note bearing interest at a fixed annual rate of 6.50%, payable quarterly. The fair value of the note receivable from Anadarko was $325.6 million and $279.6 million at June 30, 2019, and December 31, 2018, respectively. The fair value of the note reflects consideration of credit risk and any premium or discount for the differential between the stated interest rate and quarter-end market interest rate, based on quoted market prices of similar debt instruments. Accordingly, the fair value of the note receivable from Anadarko is measured using Level 2 inputs. APCWH Note Payable. In June 2017, APCWH entered into an eight-year note payable agreement with Anadarko, which was repaid upon consummation of the Merger. See Note 1 and Note 10. Commodity price swap agreements. WES Operating had commodity price swap agreements with Anadarko to mitigate exposure to the commodity price risk inherent in its percent-of-proceeds, percent-of-product and keep-whole contracts. Notional volumes for each of the commodity price swap agreements were not specifically defined. Instead, the commodity price swap agreements applied to the actual volume of natural gas, condensate and NGLs purchased and sold. The commodity price swap agreements did not satisfy the definition of a derivative financial instrument and, therefore, were not required to be measured at fair value. Net gains (losses) on commodity price swap agreements were zero and $(0.7) million (due to settlement of 2018 activity in 2019) for the three and six months ended June 30, 2019, respectively, and $(1.4) million and $(2.6) million for the three and six months ended June 30, 2018, respectively, and are reported in the consolidated statements of operations as affiliate Product sales. These commodity price swap agreements expired without renewal on December 31, 2018. 6. TRANSACTIONS WITH AFFILIATES (CONTINUED) Revenues or costs attributable to volumes sold and purchased during 2018 and/or settled during 2019 for the DJ Basin complex and the MGR assets are recognized in the consolidated statements of operations at the applicable market price in the tables below. A capital contribution from Anadarko is recorded in the consolidated statements of equity and partners’ capital for an amount equal to (i) the amount by which the swap price for product sales exceeds the applicable market price in the tables below, minus (ii) the amount by which the swap price for product purchases exceeds the applicable market price in the tables below. The tables below summarize the swap prices compared to the forward market prices:
6. TRANSACTIONS WITH AFFILIATES (CONTINUED) Gathering and processing agreements. The Partnership has significant gathering and processing arrangements with affiliates of Anadarko on a majority of its systems. Natural gas gathering, treating and transportation throughput (excluding equity investment throughput) attributable to production owned or controlled by Anadarko was 5% and 6% for the three and six months ended June 30, 2019, respectively, and 6% and 7% for the three and six months ended June 30, 2018, respectively. Natural gas processing throughput (excluding equity investment throughput) attributable to production owned or controlled by Anadarko was 42% and 41% for the three and six months ended June 30, 2019, respectively, and 39% and 40% for the three and six months ended June 30, 2018, respectively. Crude oil, NGLs and produced water gathering, treating, transportation and disposal throughput (excluding equity investment throughput) attributable to production owned or controlled by Anadarko was 82% and 83% for the three and six months ended June 30, 2019, respectively, and 82% and 80% for the three and six months ended June 30, 2018, respectively. Commodity purchase and sale agreements. The Partnership sells a significant amount of its natural gas, condensate and NGLs to Anadarko Energy Services Company (“AESC”), Anadarko’s marketing affiliate that acts as an agent in the sale to a third party. In addition, the Partnership purchases natural gas, condensate and NGLs from AESC pursuant to purchase agreements. The purchase and sale agreements with AESC are generally one-year contracts, subject to annual renewal. LTIPs. The general partner awards phantom units under the Western Gas Partners, LP 2017 Long-Term Incentive Plan (assumed by the Partnership in connection with the Merger) and the Western Gas Equity Partners, LP 2012 Long-Term Incentive Plan (collectively referred to as the “LTIPs”) to its independent directors, but also from time to time to the executive officers and Anadarko employees performing services for the Partnership. The phantom units awarded to the independent directors vest one year from the grant date, while all other awards are subject to graded vesting over a three-year service period. Anadarko Incentive Plan. General and administrative expenses included equity-based compensation expense allocated to the Partnership by Anadarko, for awards granted to the executive officers of the general partner and other employees under the Anadarko Petroleum Corporation 2012 Omnibus Incentive Compensation Plan, as amended and restated (the “Anadarko Incentive Plan”). Portions of these amounts are reflected as contributions to partners’ capital in the consolidated statements of equity and partners’ capital. 6. TRANSACTIONS WITH AFFILIATES (CONTINUED) Summary of affiliate transactions. The following table summarizes material affiliate transactions included in the Partnership’s consolidated financial statements:
The following table summarizes affiliate transactions for WES Operating (which are included in the Partnership’s consolidated financial statements) to the extent the amounts differ from the Partnership’s consolidated financial statements:
6. TRANSACTIONS WITH AFFILIATES (CONTINUED) Concentration of credit risk. Anadarko was the only customer from whom revenues exceeded 10% of consolidated revenues for all periods presented in the consolidated statements of operations.
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Property, Plant and Equipment |
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| Property, Plant and Equipment [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Property, Plant and Equipment | 7. PROPERTY, PLANT AND EQUIPMENT A summary of the historical cost of property, plant and equipment is as follows:
The cost of property classified as “Assets under construction” is excluded from capitalized costs being depreciated. These amounts represent property that is not yet suitable to be placed into productive service as of the respective balance sheet date. Impairments. During the six months ended June 30, 2019, the Partnership recognized impairments of $1.2 million. During the year ended December 31, 2018, the Partnership recognized impairments of $230.6 million, including impairments of $125.9 million at the Third Creek gathering system and $8.1 million at the Kitty Draw gathering system. These assets were impaired to their estimated salvage values of $1.8 million and zero, respectively, using the market approach and Level 3 fair value inputs, due to the shutdown of the systems in May 2018. Also during 2018, the Partnership recognized impairments of $38.7 million and $34.6 million at the Hilight and MIGC systems, respectively. These assets were impaired to their estimated fair values of $4.9 million and $15.2 million, respectively, using the income approach and Level 3 fair value inputs, due to a reduction in estimated future cash flows. The remaining $23.3 million of impairments was primarily related to (i) a $10.9 million impairment at the GNB NGL pipeline, which was impaired to its estimated fair value of $10.0 million using the income approach and Level 3 fair value inputs, and (ii) a $5.6 million impairment related to an idle facility at the Chipeta complex, which was impaired to its estimated salvage value of $1.5 million using the market approach and Level 3 fair value inputs.
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Equity Investments |
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| Equity Method Investments and Joint Ventures [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Equity Investments | 8. EQUITY INVESTMENTS The following table presents the equity investments activity for the six months ended June 30, 2019:
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Components of Working Capital |
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| Components Of Working Capital [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Components of Working Capital | 9. COMPONENTS OF WORKING CAPITAL A summary of accounts receivable, net is as follows:
A summary of other current assets is as follows:
A summary of accrued liabilities is as follows:
(1) Includes amounts related to WES Operating’s interest-rate swaps as of June 30, 2019 and December 31, 2018 (see Note 10). Includes lease liabilities related to the implementation of ASU 2016-02, Leases (Topic 842) as of June 30, 2019 (see Note 1).
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Debt and Interest Expense |
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| Debt Instruments [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Debt and Interest Expense | 10. DEBT AND INTEREST EXPENSE WES Operating is the borrower for all existing debt, excluding the WGP RCF, and is expected to be the borrower for all future debt. The following table presents the outstanding debt:
Debt activity. The following table presents the debt activity for the six months ended June 30, 2019:
WES Operating Senior Notes. At June 30, 2019, WES Operating was in compliance with all covenants under the indentures governing its outstanding notes. 10. DEBT AND INTEREST EXPENSE (CONTINUED) WGP RCF. In February 2018, the Partnership voluntarily reduced the aggregate commitments of the lenders under the WGP RCF to $35.0 million. The WGP RCF, which was previously available to be used to buy WES Operating common units and for general partnership purposes, matured in March 2019 and the $28.0 million of outstanding borrowings were repaid. Revolving credit facility. In December 2018, WES Operating entered into an amendment to the senior unsecured revolving credit facility (“RCF”) that (i) subject to the consummation of the Merger (see Note 1), increased the size of the RCF from $1.5 billion to $2.0 billion, while leaving the $0.5 billion accordion feature of the RCF unexercised, and (ii) effective on February 15, 2019, exercised one of the one-year extension options to extend the maturity date of the RCF from February 2023 to February 2024. The RCF is expandable to a maximum of $2.5 billion and bears interest at the London Interbank Offered Rate (“LIBOR”), plus applicable margins ranging from 1.00% to 1.50%, or an alternate base rate equal to the greatest of (a) the Prime Rate, (b) the Federal Funds Effective Rate plus 0.50%, or (c) LIBOR plus 1.00%, in each case plus applicable margins currently ranging from zero to 0.50%, based upon WES Operating’s senior unsecured debt rating. A required quarterly facility fee is paid ranging from 0.125% to 0.250% of the commitment amount (whether used or unused), also based upon the senior unsecured debt rating. As of June 30, 2019, there was $920.0 million in outstanding borrowings and $4.6 million in outstanding letters of credit, resulting in $1.1 billion available borrowing capacity under the RCF. As of June 30, 2019 and 2018, the interest rate on any outstanding RCF borrowings was 3.71% and 3.39%, respectively. The facility fee rate was 0.20% at June 30, 2019 and 2018. At June 30, 2019, WES Operating was in compliance with all covenants under the RCF. Term loan facility. In December 2018, WES Operating entered into a $2.0 billion 364-day senior unsecured credit facility (the “Term loan facility”), the proceeds of which were used to fund substantially all of the cash portion of the consideration under the Merger Agreement and the payment of related transaction costs (see Note 1). The Term loan facility bears interest at LIBOR, plus applicable margins ranging from 1.000% to 1.625%, or an alternate base rate equal to the greatest of (a) the Prime Rate, (b) the Federal Funds Effective Rate plus 0.50%, or (c) LIBOR plus 1.00%, in each case as defined in the Term loan facility and plus applicable margins currently ranging from zero to 0.625%, based upon WES Operating’s senior unsecured debt rating. Net cash proceeds received from future asset sales and debt or equity offerings must be used to repay amounts outstanding under the facility. In July 2019, WES Operating entered into an amendment to the Term loan facility to (i) extend the maturity date from February 2020 to December 2020, (ii) increase the commitments available under the Term loan facility from $2.0 billion to $3.0 billion, the incremental $1.0 billion of which may be drawn by WES Operating on or before September 30, 2019, and (iii) modify the provision requiring that all debt issuance proceeds be used to repay the Term loan facility to allow for a $1.0 billion carve out of debt offering proceeds. As of June 30, 2019, there was $2.0 billion in outstanding borrowings under the Term loan facility. As of June 30, 2019, the interest rate on outstanding Term loan facility borrowings was 3.78% and WES Operating was in compliance with all covenants under the Term loan facility. All of WES Operating’s notes and obligations under the RCF and Term loan facility are recourse to WES Operating GP. WES Operating GP is indemnified by wholly owned subsidiaries of Anadarko against any claims made against WES Operating GP for WES Operating’s long-term debt and/or borrowings under the RCF and Term loan facility. APCWH Note Payable. In June 2017, in connection with funding the construction of the APC water systems, which were acquired as part of the AMA acquisition, APCWH entered into an eight-year note payable agreement with Anadarko. This note payable had a maximum borrowing limit of $500.0 million, and accrued interest, which was payable upon maturity, at the applicable mid-term federal rate based on a quarterly compounding basis as determined by the U.S. Secretary of the Treasury. As of June 30, 2018, the interest rate on the outstanding borrowings was 2.83%. The APCWH Note Payable was repaid upon the consummation of the Merger. See Note 1. 10. DEBT AND INTEREST EXPENSE (CONTINUED) Interest-rate swaps. In December 2018 and March 2019, WES Operating entered into interest-rate swap agreements with an aggregate notional amount of $750.0 million and $375.0 million, respectively, to manage interest rate risk associated with anticipated 2019 debt issuances. Pursuant to these swap agreements, a floating interest rate indexed to the three-month LIBOR was exchanged for a fixed interest rate. Depending on market conditions, liability management actions or other factors, WES Operating may settle or amend certain or all of the currently outstanding interest-rate swaps. The following interest-rate swaps were outstanding as of June 30, 2019:
The Partnership does not apply hedge accounting and, therefore, gains and losses associated with the interest-rate swaps are recognized currently in earnings. For the three and six months ended June 30, 2019, non-cash losses of $59.0 million and $94.6 million, respectively, were recognized, which are included in Other income (expense), net in the consolidated statements of operations. Valuation of the interest-rate swaps is based on similar transactions observable in active markets and industry standard models that primarily rely on market-observable inputs. Inputs used to estimate fair value in industry standard models are categorized as Level 2 inputs, because substantially all assumptions and inputs are observable in active markets throughout the full term of the instruments. Inputs used to estimate the fair value include market price curves, contract terms and prices, and credit risk adjustments. The fair value of the interest-rate swaps was a liability of $102.6 million and $8.0 million at June 30, 2019, and December 31, 2018, respectively, which is reported in Accrued liabilities on the consolidated balance sheets. Credit risk considerations. Over-the-counter traded swaps expose the Partnership to counterparty credit risk. The Partnership monitors the creditworthiness of its counterparties, establishes credit limits according to credit policies and guidelines, and assesses the impact on the fair value of its counterparties’ creditworthiness. Under certain circumstances, the Partnership has the ability to require cash collateral or letters of credit to mitigate its credit risk exposure. The interest-rate swaps are subject to individually negotiated credit provisions that may require collateral of cash or letters of credit depending on the derivative’s portfolio valuation versus negotiated credit thresholds. These credit thresholds generally require full or partial collateralization of the Partnership’s obligations depending on certain credit risk related provisions. Specifically, collateral may be required to be posted with respect to the interest-rate swaps if WES Operating’s credit ratings decline below current levels, the liability associated with the swaps increases substantially or certain credit event of default provisions occur. For example, based on the derivative positions as of June 30, 2019, if WES Operating’s credit ratings from both Standard and Poor’s and Moody’s Investors Service were below the investment grade thresholds of BBB- and Baa3, respectively, collateral would be required to be posted of up to approximately $44.0 million as of June 30, 2019. The aggregate fair value of interest-rate swaps with credit risk related contingent features for which a net liability position existed was $82.3 million and $5.7 million at June 30, 2019, and December 31, 2018, respectively. 10. DEBT AND INTEREST EXPENSE (CONTINUED) Interest expense. The following table summarizes the amounts included in interest expense:
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Leases |
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| Leases [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Leases | 11. LEASES Anadarko, on behalf of the Partnership, has entered into operating leases that extend through 2028 for corporate offices, shared field offices, and equipment supporting the Partnership’s operations, for which Anadarko charges the Partnership rent. The Partnership has also subleased equipment from Anadarko with finance leases extending through April 2020. The following table summarizes information related to the Partnership’s leases at June 30, 2019:
11. LEASES (CONTINUED) Lease expense charged to the Partnership was $12.9 million and $26.7 million for the three and six months ended June 30, 2018, respectively. The following table summarizes the Partnership’s lease cost for the periods presented below:
The following table summarizes cash paid for amounts included in the measurement of lease liabilities for the six months ended June 30, 2019:
The following table reconciles the undiscounted cash flows to the operating and finance lease liabilities at June 30, 2019:
11. LEASES (CONTINUED) The amounts in the table below represent contractual operating lease commitments at December 31, 2018, that may be assigned or otherwise charged to the Partnership pursuant to the reimbursement provisions of the omnibus agreement:
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| Leases | 11. LEASES Anadarko, on behalf of the Partnership, has entered into operating leases that extend through 2028 for corporate offices, shared field offices, and equipment supporting the Partnership’s operations, for which Anadarko charges the Partnership rent. The Partnership has also subleased equipment from Anadarko with finance leases extending through April 2020. The following table summarizes information related to the Partnership’s leases at June 30, 2019:
11. LEASES (CONTINUED) Lease expense charged to the Partnership was $12.9 million and $26.7 million for the three and six months ended June 30, 2018, respectively. The following table summarizes the Partnership’s lease cost for the periods presented below:
The following table summarizes cash paid for amounts included in the measurement of lease liabilities for the six months ended June 30, 2019:
The following table reconciles the undiscounted cash flows to the operating and finance lease liabilities at June 30, 2019:
11. LEASES (CONTINUED) The amounts in the table below represent contractual operating lease commitments at December 31, 2018, that may be assigned or otherwise charged to the Partnership pursuant to the reimbursement provisions of the omnibus agreement:
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Commitments and Contingencies |
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Jun. 30, 2019 | |
| Commitments and Contingencies Disclosure [Abstract] | |
| Commitments and Contingencies | 12. COMMITMENTS AND CONTINGENCIES 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 short-term payment obligations, or commitments, related to its capital spending programs, as well as those of its unconsolidated affiliates, the majority of which is expected to be paid in the next twelve months. These commitments primarily relate to construction and expansion projects at the West Texas and DJ Basin complexes, DBM oil system and DBM water systems.
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Description of Business and Basis of Presentation (Policies) |
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| Accounting Policies [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Consolidation policy | Basis of presentation. The following table outlines the ownership interests and the accounting method of consolidation used in the consolidated financial statements for entities not wholly owned:
The consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”). The consolidated financial statements include the accounts of the Partnership and entities in which it holds a controlling financial interest, including WES Operating and WES Operating GP. All significant intercompany transactions have been eliminated. Certain information and note disclosures commonly included in annual financial statements have been condensed or omitted pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”). Accordingly, the accompanying consolidated financial statements and notes should be read in conjunction with the Partnership and WES Operating’s 2018 Forms 10-K, as filed with the SEC on February 20, 2019, certain sections of which were recast to reflect the results attributable to AMA (as defined in Note 3) in the Partnership and WES Operating’s Current Reports on Form 8-K, as filed with the SEC on May 17, 2019. 1. DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION (CONTINUED) 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 and Note 5), (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) the senior secured revolving credit facility (“WGP RCF”) until its repayment in March 2019. See Note 10. Noncontrolling interests. For periods subsequent to the consummation of the Merger, the Partnership’s noncontrolling interests in the consolidated financial statements consisted of (i) the 25% interest in Chipeta held by a third-party member and (ii) the 2.0% limited partner interest in WES Operating held by a subsidiary of Anadarko. For periods prior to the consummation of the Merger, the Partnership’s noncontrolling interests in the consolidated financial statements consisted of (i) the 25% interest in Chipeta held by a third-party member, (ii) the publicly held limited partner interests in WES Operating, (iii) the common units issued by WES Operating to subsidiaries of Anadarko as part of the consideration paid for prior acquisitions from Anadarko, and (iv) the Class C units issued by WES Operating to a subsidiary of Anadarko as part of the funding for the acquisition of DBM. For all periods presented, WES Operating’s noncontrolling interest in the consolidated financial statements consisted of the 25% interest in Chipeta held by a third-party member. See Note 5. When WES Operating issues equity, the carrying amount of the noncontrolling interest reported by the Partnership is adjusted to reflect the noncontrolling ownership interest in WES Operating. The resulting impact of such noncontrolling interest adjustment on the Partnership’s interest in WES Operating is reflected as an adjustment to the Partnership’s partners’ capital.
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| Business combinations policy | Presentation of Partnership assets. The term “Partnership assets” includes both the assets owned and the interests accounted for under the equity method by the Partnership, through its partnership interests in WES Operating as of June 30, 2019 (see Note 8). Because the Partnership owns the entire non-economic general partner interest in and controls WES Operating GP, and the general partner is controlled by Anadarko, each of the Partnership’s acquisitions of assets from Anadarko has been considered a transfer of net assets between entities under common control. As such, assets acquired from Anadarko were initially recorded at Anadarko’s historic carrying value, which did not correlate to the total acquisition price paid by the Partnership. Further, after an acquisition of assets from Anadarko, the Partnership is required to recast its financial statements to include the activities of such assets from the date of common control. For those periods requiring recast, the consolidated financial statements for periods prior to the acquisition of assets from Anadarko are prepared from Anadarko’s historical cost-basis accounts and may not necessarily be indicative of the actual results of operations that would have occurred if the Partnership had owned the assets during the periods reported. Net income (loss) attributable to the assets acquired from Anadarko for periods prior to the Partnership’s acquisition of such assets is not allocated to the limited partners.
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| 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 methods considered reasonable. Changes in facts and circumstances or additional information may result in revised estimates and actual results may differ from these estimates. Effects on the business, financial condition and results of operations resulting from revisions to estimates are recognized when the facts that give rise to the revisions become known. The information included herein reflects all normal recurring adjustments which are, in the opinion of management, necessary for a fair presentation of the consolidated financial statements, and certain prior-period amounts have been reclassified to conform to the current-year presentation. |
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| 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.
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| New accounting standards policy | Recently adopted accounting standards. ASU 2016-02, Leases (Topic 842) requires lessees to recognize a lease liability and a right-of-use (“ROU”) asset for all leases, including operating leases, with a term greater than 12 months on the balance sheet. This ASU modifies the definition of a lease and outlines the recognition, measurement, presentation, and disclosure of leasing arrangements by both lessees and lessors. The Partnership adopted this standard on January 1, 2019, using the modified retrospective method applied to all leases that existed on January 1, 2019, and prior-period financial statements were not adjusted. The Partnership elected not to reassess contracts that commenced prior to adoption, to continue applying its current accounting policy for existing or expired land easements and not to recognize ROU assets or lease liabilities for short-term leases. |
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| Leases policy | Leases. The Partnership determines if an arrangement is a lease based on rights and obligations conveyed at inception of a contract. At the commencement date, a lease is classified as either operating or finance, and ROU assets and lease liabilities are recognized based on the present value of future lease payments over the lease term. As the rate implicit in the Partnership’s leases is generally not readily determinable, the Partnership discounts lease liabilities using the Partnership’s incremental borrowing rate at the commencement date. Non-lease components associated with leases that begin in 2019 or later are accounted for as part of the lease component, and prepaid lease payments are included in ROU assets. Options to extend or terminate a lease are included in the lease term when it is reasonably certain that the Partnership will exercise that option. Leases of 12 months or less are not recognized on the consolidated balance sheets. Lease cost is generally recognized on a straight-line basis over the lease term. For finance leases, interest expense is recognized over the lease term using the effective interest method. Variable lease payments are recognized when the obligation for those payments is incurred.
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| Net income (loss) per common unit policy | Partnership’s net income (loss) per common unit. The Partnership’s 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. Net income (loss) per common unit is calculated assuming that cash distributions are equal to the net income attributable to the Partnership. Net income (loss) attributable to the Partnership assets (as defined in Note 1) acquired from Anadarko for periods prior to the acquisition of the assets is not allocated to the limited partners when calculating net income (loss) per common unit. Net income equal to the amount of available cash (as defined by the partnership agreement) is allocated to the Partnership’s common unitholders consistent with actual cash distributions. WES Operating’s net income (loss) per common unit. For periods subsequent to the closing of the Merger, net income (loss) per common unit for WES Operating is not calculated as it no longer has publicly traded units. For periods prior to the closing of the Merger, Net income (loss) attributable to Western Midstream Operating, LP earned on and subsequent to the date of acquisition of the Partnership assets was allocated as discussed below. Net income (loss) attributable to the Partnership assets acquired from Anadarko for periods prior to the acquisition of the assets was not allocated to the unitholders for purposes of calculating net income (loss) per common unit. General partner. The general partner’s allocation was equal to cash distributions plus its portion of undistributed earnings or losses. Specifically, net income equal to the amount of available cash (as defined by WES Operating’s partnership agreement) was allocated to the general partner consistent with actual cash distributions and capital account allocations, including incentive distributions. Undistributed earnings (net income in excess of distributions) or undistributed losses (available cash in excess of net income) was then allocated to the general partner in accordance with its weighted-average ownership percentage during each period. Common and Class C unitholders. The Class C units were considered a participating security because they participated in distributions with common units according to a predetermined formula (see Note 4). The common and Class C unitholders’ allocation was equal to their cash distributions plus their respective allocations of undistributed earnings or losses. Specifically, net income equal to the amount of available cash (as defined by the WES Operating partnership agreement) was allocated to the common and Class C unitholders consistent with actual cash distributions and capital account allocations. Undistributed earnings or undistributed losses were then allocated to the common and Class C unitholders in accordance with their respective weighted-average ownership percentages during each period. The common unitholder allocation also included the impact of the amortization of the Class C units beneficial conversion feature. The Class C unitholder allocation was similarly impacted by the amortization of the Class C units beneficial conversion feature (see WES Operating Class C units above). 5. EQUITY AND PARTNERS’ CAPITAL (CONTINUED) Calculation of net income (loss) per unit. Basic net income (loss) per common unit was calculated by dividing the net income (loss) attributable to common unitholders by the weighted-average number of common units outstanding during the period. The common units issued in connection with acquisitions and equity offerings were included on a weighted-average basis for periods they were outstanding. Diluted net income (loss) per common unit was calculated by dividing the sum of (i) the net income (loss) attributable to common units and (ii) the net income (loss) attributable to the Class C units as a participating security, by the sum of the weighted-average number of common units outstanding plus the dilutive effect of the weighted-average number of outstanding Class C units.
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| Derivatives policy | The Partnership does not apply hedge accounting and, therefore, gains and losses associated with the interest-rate swaps are recognized currently in earnings. For the three and six months ended June 30, 2019, non-cash losses of $59.0 million and $94.6 million, respectively, were recognized, which are included in Other income (expense), net in the consolidated statements of operations. Valuation of the interest-rate swaps is based on similar transactions observable in active markets and industry standard models that primarily rely on market-observable inputs. Inputs used to estimate fair value in industry standard models are categorized as Level 2 inputs, because substantially all assumptions and inputs are observable in active markets throughout the full term of the instruments. Inputs used to estimate the fair value include market price curves, contract terms and prices, and credit risk adjustments. The fair value of the interest-rate swaps was a liability of $102.6 million and $8.0 million at June 30, 2019, and December 31, 2018, respectively, which is reported in Accrued liabilities on the consolidated balance sheets.
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Description of Business and Basis of Presentation (Tables) |
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Jun. 30, 2019 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accounting Policies [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Assets and Investments Table | As of June 30, 2019, the Partnership’s assets and investments consisted of the following:
(1) Includes the DBM water systems.
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| 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:
(3) The 25% interest in Chipeta Processing LLC (“Chipeta”) held by a third-party member is reflected within noncontrolling interests in the consolidated financial statements, in addition to the noncontrolling interests noted below.
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Revenue from Contracts with Customers (Tables) |
6 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Jun. 30, 2019 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Revenue from Contract with Customer [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Summary of Revenue from Contracts with Customers Table | The following table summarizes revenue from contracts with customers:
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| Contract Assets and Liabilities Activity Tables | The following table summarizes the current period activity related to contract liabilities from contracts with customers:
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| 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.
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Acquisitions and Divestitures (Tables) |
6 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Jun. 30, 2019 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Property, Plant and Equipment [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Impact to Historical Consolidated Statements of Operations Tables | The following tables present the impact of AMA on Revenues and other, Equity income, net – affiliates and Net income (loss) as presented in the Partnership and WES Operating’s historical consolidated statements of operations:
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Partnership Distributions (Tables) |
6 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Jun. 30, 2019 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Distributions Made to Members or Limited Partners [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Cash Distributions Tables | The Board of Directors of the general partner (the “Board of Directors”) declared the following cash distributions to the Partnership’s unitholders for the periods presented:
(2) The Board of Directors declared a cash distribution to the Partnership’s unitholders for the second quarter of 2019 of $0.61800 per unit, or $280.0 million in aggregate. The cash distribution is payable on August 13, 2019, to unitholders of record at the close of business on July 31, 2019. For the 2018 periods noted below, WES Operating paid the following cash distributions to WES Operating’s common and general partner unitholders:
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Equity and Partners' Capital (Tables) |
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Jun. 30, 2019 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Partners' Capital Notes [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Partnership Interests Table | In February 2019, the Partnership issued common units in connection with the closing of the Merger (see Note 1) as follows:
(1) Total Partnership units issued upon consummation of the Merger exceeds the calculation of such units using the exchange ratio due to the rounding convention reflected in the Merger Agreement. The following table summarizes WES Operating’s units issued during the six months ended June 30, 2019:
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| Calculation of Net Income (Loss) Per Unit Table | The following table illustrates the calculation of WES Operating’s net income (loss) per common unit:
(2) The impact of Class C units would be anti-dilutive for the periods presented.
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Transactions with Affiliates (Tables) |
6 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Jun. 30, 2019 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Related Party Transaction [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Commodity Price Swap Agreements Tables | The tables below summarize the swap prices compared to the forward market prices:
(1) Represents the New York Mercantile Exchange forward strip price as of December 20, 2017, for the 2018 Market Prices, adjusted for product specification, location, basis and, in the case of NGLs, transportation and fractionation costs.
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| Related Party Transactions Tables | The following table summarizes material affiliate transactions included in the Partnership’s consolidated financial statements:
(7) Represents distributions paid to other subsidiaries of Anadarko under WES Operating’s partnership agreement (see Note 4 and Note 5).
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| WES Operating [Member] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Related Party Transaction [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Related Party Transactions Tables | The following table summarizes affiliate transactions for WES Operating (which are included in the Partnership’s consolidated financial statements) to the extent the amounts differ from the Partnership’s consolidated financial statements:
(2) Represents distributions paid to the Partnership and other subsidiaries of Anadarko under WES Operating’s partnership agreement (see Note 4 and Note 5). For the six months ended June 30, 2019, includes distributions to the Partnership and a subsidiary of Anadarko related to the repayment of the WGP RCF (see Note 10).
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Property, Plant and Equipment (Tables) |
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Jun. 30, 2019 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Property, Plant and Equipment [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Property, Plant and Equipment Table | A summary of the historical cost of property, plant and equipment is as follows:
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Equity Investments (Tables) |
6 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Jun. 30, 2019 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Equity Method Investments and Joint Ventures [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Equity Investments Table | The following table presents the equity investments activity for the six months ended June 30, 2019:
(2) 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.
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Components of Working Capital (Tables) |
6 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Jun. 30, 2019 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Components Of Working Capital [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accounts Receivable, Net Table | A summary of accounts receivable, net is as follows:
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| Other Current Assets Table | A summary of other current assets is as follows:
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| Accrued Liabilities Table | A summary of accrued liabilities is as follows:
(1) Includes amounts related to WES Operating’s interest-rate swaps as of June 30, 2019 and December 31, 2018 (see Note 10). Includes lease liabilities related to the implementation of ASU 2016-02, Leases (Topic 842) as of June 30, 2019 (see Note 1).
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Debt and Interest Expense (Tables) |
6 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Jun. 30, 2019 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Debt Instruments [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Debt Outstanding and Debt Activity Tables | The following table presents the outstanding debt:
Debt activity. The following table presents the debt activity for the six months ended June 30, 2019:
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| Interest-Rate Swap Table | The following interest-rate swaps were outstanding as of June 30, 2019:
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| Interest Expense Table | The following table summarizes the amounts included in interest expense:
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Leases (Tables) |
6 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Jun. 30, 2019 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Leases [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Summary of Leases Table | The following table summarizes information related to the Partnership’s leases at June 30, 2019:
(1) Includes additions to ROU assets and lease liabilities of $8.5 million related to finance leases for the six months ended June 30, 2019.
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| Summary of Lease Cost and Cash Flow Activity Tables | The following table summarizes the Partnership’s lease cost for the periods presented below:
The following table summarizes cash paid for amounts included in the measurement of lease liabilities for the six months ended June 30, 2019:
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| Operating Leases Maturity Tables | The amounts in the table below represent contractual operating lease commitments at December 31, 2018, that may be assigned or otherwise charged to the Partnership pursuant to the reimbursement provisions of the omnibus agreement:
The following table reconciles the undiscounted cash flows to the operating and finance lease liabilities at June 30, 2019:
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| Finance Leases Maturity Table | The following table reconciles the undiscounted cash flows to the operating and finance lease liabilities at June 30, 2019:
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Description of Business and Basis of Presentation - Assets and Investments Table (Details) |
Jun. 30, 2019
unit
|
|---|---|
| Owned and Operated [Member] | Gathering Systems [Member] | |
| Assets [Line Items] | |
| Assets, number of units | 17 |
| Owned and Operated [Member] | Treating Facilities [Member] | |
| Assets [Line Items] | |
| Assets, number of units | 35 |
| Owned and Operated [Member] | Natural Gas Processing Plants/Trains [Member] | |
| Assets [Line Items] | |
| Assets, number of units | 24 |
| Owned and Operated [Member] | Natural Gas Liquids Pipelines [Member] | |
| Assets [Line Items] | |
| Assets, number of units | 2 |
| Owned and Operated [Member] | Natural Gas Pipelines [Member] | |
| Assets [Line Items] | |
| Assets, number of units | 5 |
| Owned and Operated [Member] | Oil Pipelines [Member] | |
| Assets [Line Items] | |
| Assets, number of units | 3 |
| Operated Interests [Member] | Gathering Systems [Member] | |
| Assets [Line Items] | |
| Assets, number of units | 2 |
| Operated Interests [Member] | Treating Facilities [Member] | |
| Assets [Line Items] | |
| Assets, number of units | 3 |
| Operated Interests [Member] | Natural Gas Processing Plants/Trains [Member] | |
| Assets [Line Items] | |
| Assets, number of units | 3 |
| Operated Interests [Member] | Oil Pipelines [Member] | |
| Assets [Line Items] | |
| Assets, number of units | 1 |
| Non-Operated Interests [Member] | Gathering Systems [Member] | |
| Assets [Line Items] | |
| Assets, number of units | 3 |
| Equity Investments [Member] | Gathering Systems [Member] | |
| Assets [Line Items] | |
| Assets, number of units | 2 |
| Equity Investments [Member] | Treating Facilities [Member] | |
| Assets [Line Items] | |
| Assets, number of units | 3 |
| Equity Investments [Member] | Natural Gas Processing Plants/Trains [Member] | |
| Assets [Line Items] | |
| Assets, number of units | 5 |
| Equity Investments [Member] | Natural Gas Liquids Pipelines [Member] | |
| Assets [Line Items] | |
| Assets, number of units | 4 |
| Equity Investments [Member] | Natural Gas Pipelines [Member] | |
| Assets [Line Items] | |
| Assets, number of units | 1 |
| Equity Investments [Member] | Oil Pipelines [Member] | |
| Assets [Line Items] | |
| Assets, number of units | 3 |
Description of Business and Basis of Presentation - Ownership Interests and Method of Consolidation Table (Details) |
6 Months Ended |
|---|---|
Jun. 30, 2019 | |
| Chipeta [Member] | |
| Subsidiary of Limited Liability Company or Limited Partnership [Line Items] | |
| Ownership interest by noncontrolling interest owner | 25.00% |
| Equity Investments [Member] | Fort Union [Member] | |
| Subsidiary of Limited Liability Company or Limited Partnership [Line Items] | |
| Equity investment ownership percentage | 14.81% |
| Equity Investments [Member] | White Cliffs [Member] | |
| Subsidiary of Limited Liability Company or Limited Partnership [Line Items] | |
| Equity investment ownership percentage | 10.00% |
| Equity Investments [Member] | Rendezvous [Member] | |
| Subsidiary of Limited Liability Company or Limited Partnership [Line Items] | |
| Equity investment ownership percentage | 22.00% |
| Equity Investments [Member] | Mont Belvieu JV [Member] | |
| Subsidiary of Limited Liability Company or Limited Partnership [Line Items] | |
| Equity investment ownership percentage | 25.00% |
| Equity Investments [Member] | Texas Express Pipeline [Member] | |
| Subsidiary of Limited Liability Company or Limited Partnership [Line Items] | |
| Equity investment ownership percentage | 20.00% |
| Equity Investments [Member] | Texas Express Gathering [Member] | |
| Subsidiary of Limited Liability Company or Limited Partnership [Line Items] | |
| Equity investment ownership percentage | 20.00% |
| 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] | Whitethorn LLC [Member] | |
| Subsidiary of Limited Liability Company or Limited Partnership [Line Items] | |
| Equity investment ownership percentage | 20.00% |
| Equity Investments [Member] | Cactus II [Member] | |
| Subsidiary of Limited Liability Company or Limited Partnership [Line Items] | |
| Equity investment ownership percentage | 15.00% |
| Equity Investments [Member] | Saddlehorn [Member] | |
| Subsidiary of Limited Liability Company or Limited Partnership [Line Items] | |
| Equity investment ownership percentage | 20.00% |
| Equity Investments [Member] | Panola [Member] | |
| Subsidiary of Limited Liability Company or Limited Partnership [Line Items] | |
| Equity investment ownership percentage | 15.00% |
| Equity Investments [Member] | Mi Vida [Member] | |
| Subsidiary of Limited Liability Company or Limited Partnership [Line Items] | |
| Equity investment ownership percentage | 50.00% |
| Equity Investments [Member] | Ranch Westex [Member] | |
| Subsidiary of Limited Liability Company or Limited Partnership [Line Items] | |
| Equity investment ownership percentage | 50.00% |
| Equity Investments [Member] | Red Bluff Express [Member] | |
| Subsidiary of Limited Liability Company or Limited Partnership [Line Items] | |
| Equity investment ownership percentage | 30.00% |
| Proportionate Consolidation [Member] | Marcellus Interest Systems [Member] | |
| Subsidiary of Limited Liability Company or Limited Partnership [Line Items] | |
| Percentage ownership interest | 33.75% |
| Proportionate Consolidation [Member] | Springfield System [Member] | |
| Subsidiary of Limited Liability Company or Limited Partnership [Line Items] | |
| Percentage ownership interest | 50.10% |
| Full Consolidation [Member] | Chipeta [Member] | |
| Subsidiary of Limited Liability Company or Limited Partnership [Line Items] | |
| Percentage ownership interest | 75.00% |
Description of Business and Basis of Presentation - Additional Information (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | 12 Months Ended | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Feb. 28, 2019 |
Jun. 30, 2019 |
Mar. 31, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
Dec. 31, 2018 |
||||||||||
| Acquisitions | $ 92,546 | |||||||||||||||
| Common units outstanding | 453,008,854 | 453,008,854 | 218,937,797 | |||||||||||||
| Conversion ratio per unit | 1.525 | |||||||||||||||
| Revenues and other | $ 685,054 | $ 518,078 | [1] | $ 1,356,937 | $ 1,019,132 | [1] | ||||||||||
| Cost of product | [2] | 122,877 | 95,656 | [1] | 236,940 | 189,974 | [1] | |||||||||
| Impairments | $ 797 | 127,184 | [1] | $ 1,187 | 127,384 | [1] | $ 230,600 | |||||||||
| Kitty Draw and Third Creek Gathering Systems [Member] | ||||||||||||||||
| Impairments | 127,200 | |||||||||||||||
| Prior Period Adjustment [Member] | ||||||||||||||||
| Cost of product | 32,000 | 51,600 | ||||||||||||||
| Prior Period Adjustment [Member] | Service Revenues - Fee Based [Member] | ||||||||||||||||
| Revenues and other | 24,700 | 39,000 | ||||||||||||||
| Prior Period Adjustment [Member] | Product Sales [Member] | ||||||||||||||||
| Revenues and other | 7,300 | 12,600 | ||||||||||||||
| Chipeta [Member] | ||||||||||||||||
| Ownership interest by noncontrolling interest owner | 25.00% | 25.00% | ||||||||||||||
| WES Operating [Member] | ||||||||||||||||
| Ownership interest by noncontrolling interest owner | 2.00% | 2.00% | ||||||||||||||
| Anadarko Midstream Assets [Member] | ||||||||||||||||
| Conversion ratio per unit | 1.4056 | |||||||||||||||
| Revenues and other | 58,686 | 110,350 | ||||||||||||||
| Affiliates [Member] | ||||||||||||||||
| Revenues and other | $ 385,184 | 289,544 | [1] | $ 763,621 | 574,720 | [1] | ||||||||||
| Cost of product | 68,225 | 38,001 | 124,397 | 72,820 | ||||||||||||
| Affiliates [Member] | Service Revenues - Fee Based [Member] | ||||||||||||||||
| Revenues and other | 343,484 | 234,512 | [1] | 670,126 | 456,550 | [1] | ||||||||||
| Affiliates [Member] | Product Sales [Member] | ||||||||||||||||
| Revenues and other | $ 41,066 | 54,494 | [1] | $ 91,509 | 117,001 | [1] | ||||||||||
| Affiliates [Member] | Product Sales [Member] | Kitty Draw and Third Creek Gathering Systems [Member] | ||||||||||||||||
| Revenues and other | $ 5,500 | (10,900) | ||||||||||||||
| WES Operating [Member] | ||||||||||||||||
| Units issued | 308,723 | |||||||||||||||
| General partner units owned | 0 | 0 | 2,583,068 | |||||||||||||
| Conversion of units | 0 | |||||||||||||||
| Revenues and other | $ 685,054 | 518,078 | [1] | $ 1,356,937 | 1,019,132 | [1] | ||||||||||
| Cost of product | [3] | 122,877 | 95,656 | [1] | 236,940 | 189,974 | [1] | |||||||||
| Impairments | 797 | 127,184 | [1] | $ 1,187 | 127,384 | [1] | ||||||||||
| WES Operating [Member] | Anadarko Midstream Assets [Member] | ||||||||||||||||
| Units issued | 45,760,201 | |||||||||||||||
| Revenues and other | 58,686 | 110,350 | ||||||||||||||
| WES Operating [Member] | Anadarko [Member] | Anadarko Midstream Assets [Member] | ||||||||||||||||
| Cash payment for acquisition | $ 1,814,000 | |||||||||||||||
| Acquisitions | $ 193,900 | |||||||||||||||
| WES Operating [Member] | Affiliates [Member] | ||||||||||||||||
| Revenues and other | 385,184 | 289,544 | [1] | $ 763,621 | 574,720 | [1] | ||||||||||
| Cost of product | 68,200 | 38,000 | 124,400 | 72,800 | ||||||||||||
| WES Operating [Member] | Affiliates [Member] | Service Revenues - Fee Based [Member] | ||||||||||||||||
| Revenues and other | 343,484 | 234,512 | [1] | 670,126 | 456,550 | [1] | ||||||||||
| WES Operating [Member] | Affiliates [Member] | Product Sales [Member] | ||||||||||||||||
| Revenues and other | $ 41,066 | $ 54,494 | [1] | $ 91,509 | $ 117,001 | [1] | ||||||||||
| WES Operating [Member] | Common Units [Member] | ||||||||||||||||
| Conversion of units | 105,624,704 | 14,681,388 | ||||||||||||||
| Common units outstanding | 152,609,285 | |||||||||||||||
| WES Operating [Member] | Common Units [Member] | Anadarko Midstream Assets [Member] | ||||||||||||||||
| Units issued | 45,760,201 | 45,760,201 | ||||||||||||||
| WES Operating [Member] | Class C Units [Member] | ||||||||||||||||
| Units issued | 308,723 | |||||||||||||||
| Class C units, common units issued upon conversion | 1 | |||||||||||||||
| Conversion of units | (14,681,388) | |||||||||||||||
| Common units outstanding | 14,681,388 | |||||||||||||||
| Anadarko [Member] | WES Operating [Member] | ||||||||||||||||
| Ownership interest | 2.00% | |||||||||||||||
| Anadarko [Member] | Common Units [Member] | WES Operating [Member] | ||||||||||||||||
| Common units outstanding | 6,400,000 | 6,400,000 | ||||||||||||||
| Anadarko [Member] | Common Units [Member] | Anadarko Midstream Assets [Member] | WES Operating [Member] | ||||||||||||||||
| Common units outstanding | 6,375,284 | |||||||||||||||
| WES [Member] | WES Operating [Member] | ||||||||||||||||
| Ownership interest | 98.00% | |||||||||||||||
| General partner units owned | 2,583,068 | |||||||||||||||
| WES [Member] | Common Units [Member] | ||||||||||||||||
| Conversion of units | 178,692,081 | |||||||||||||||
| Common units outstanding | 452,990,862 | 218,937,797 | ||||||||||||||
| WES [Member] | Common Units [Member] | WES Operating [Member] | ||||||||||||||||
| Common units outstanding | 50,132,046 | |||||||||||||||
| WES [Member] | Common Units [Member] | Anadarko Midstream Assets [Member] | ||||||||||||||||
| Conversion of units | 55,360,984 | |||||||||||||||
| ||||||||||||||||
Revenue from Contracts with Customers - Revenue From Contracts With Customers Table (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
|||||
| Disaggregation of Revenue [Line Items] | ||||||||
| Revenue from customers | $ 684,688 | $ 519,210 | $ 1,356,841 | $ 1,021,274 | ||||
| Total revenues and other | 685,054 | 518,078 | [1] | 1,356,937 | 1,019,132 | [1] | ||
| Service Revenues - Fee Based [Member] | ||||||||
| Disaggregation of Revenue [Line Items] | ||||||||
| Revenue from customers | 593,544 | 431,861 | 1,173,518 | 825,634 | ||||
| Service Revenues - Product Based [Member] | ||||||||
| Disaggregation of Revenue [Line Items] | ||||||||
| Revenue from customers | 16,675 | 22,662 | 36,054 | 46,085 | ||||
| Product Sales [Member] | ||||||||
| Disaggregation of Revenue [Line Items] | ||||||||
| Revenue from customers | 74,469 | 64,687 | 147,269 | 149,555 | ||||
| Commodity Price Swap Agreement [Member] | ||||||||
| Disaggregation of Revenue [Line Items] | ||||||||
| Revenue from other than customers | 0 | (1,372) | (667) | (2,615) | ||||
| Other [Member] | ||||||||
| Disaggregation of Revenue [Line Items] | ||||||||
| Revenue from other than customers | $ 366 | $ 240 | $ 763 | $ 473 | ||||
| ||||||||
Revenue from Contracts with Customers - Contract Assets Table (Details) - USD ($) $ in Thousands |
6 Months Ended | ||
|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2019 |
Dec. 31, 2018 |
|
| Change in Contracts with Customer, Asset [Roll Forward] | |||
| Balance at December 31, 2018 | $ 47,621 | ||
| Amounts transferred to Accounts receivable, net that were included in the contract assets balance at the beginning of the period | (1,574) | ||
| Additional estimated revenues recognized | 9,951 | ||
| Balance at June 30, 2019 | 55,998 | ||
| Contract assets at June 30, 2019 | |||
| Other current assets | $ 12,501 | $ 5,399 | |
| Other assets | 43,497 | ||
| Total contract assets from contracts with customers | $ 47,621 | $ 55,998 | $ 47,621 |
Revenue from Contracts with Customers - Contract Liabilities Table (Details) - USD ($) $ in Thousands |
6 Months Ended | ||
|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2019 |
Dec. 31, 2018 |
|
| Change in Contracts with Customer, Liability [Roll Forward] | |||
| Balance at December 31, 2018 | $ 145,624 | ||
| Cash received or receivable, excluding revenues recognized during the period | 28,588 | ||
| Revenues recognized that were included in the contract liability balance at the beginning of the period | (10,183) | ||
| Balance at June 30, 2019 | 164,029 | ||
| Contract liabilities at June 30, 2019 | |||
| Accrued liabilities | $ 6,620 | $ 16,235 | |
| Other liabilities | 157,409 | ||
| Total contract liabilities from contracts with customers | $ 145,624 | $ 164,029 | $ 145,624 |
Revenue from Contracts with Customers - Expected Revenues Table (Details) $ in Thousands |
Jun. 30, 2019
USD ($)
|
|---|---|
| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-07-01 | |
| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | |
| Performance obligation expected to be satisfied | $ 380,239 |
| Performance obligation expected to be satisfied, expected timing | 6 months |
| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01 | |
| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | |
| Performance obligation expected to be satisfied | $ 873,259 |
| Performance obligation expected to be satisfied, expected timing | 1 year |
| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01 | |
| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | |
| Performance obligation expected to be satisfied | $ 912,081 |
| Performance obligation expected to be satisfied, expected timing | 1 year |
| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01 | |
| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | |
| Performance obligation expected to be satisfied | $ 962,556 |
| Performance obligation expected to be satisfied, expected timing | 1 year |
| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01 | |
| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | |
| Performance obligation expected to be satisfied | $ 918,095 |
| Performance obligation expected to be satisfied, expected timing | 1 year |
| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01 | |
| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | |
| Performance obligation expected to be satisfied | $ 8,386,896 |
| Performance obligation expected to be satisfied, expected timing |
Revenue from Contracts with Customers - Additional Information (Details) - USD ($) $ in Thousands |
Jun. 30, 2019 |
Dec. 31, 2018 |
|||||
|---|---|---|---|---|---|---|---|
| Revenue from Contracts with Customer [Line Items] | |||||||
| Accounts receivable, net | [1] | $ 219,924 | $ 221,164 | [2] | |||
| Customers [Member] | |||||||
| Revenue from Contracts with Customer [Line Items] | |||||||
| Accounts receivable, net | $ 262,400 | $ 214,300 | |||||
| |||||||
Acquisitions and Divestitures - Impact to Historical Consolidated Statements of Operations Table (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2019 |
Mar. 31, 2019 |
Jun. 30, 2018 |
Mar. 31, 2018 |
[1] | Jun. 30, 2019 |
Jun. 30, 2018 |
|||||
| Error Corrections and Prior Period Adjustments Restatement [Line Items] | |||||||||||
| Revenues and other | $ 685,054 | $ 518,078 | [1] | $ 1,356,937 | $ 1,019,132 | [1] | |||||
| Equity income, net – affiliates | 63,598 | 49,430 | [1] | 121,590 | 79,659 | [1] | |||||
| Net income (loss) | 175,058 | $ 211,979 | 67,167 | [1] | $ 181,010 | 387,037 | 248,177 | [1] | |||
| WES Operating [Member] | |||||||||||
| Error Corrections and Prior Period Adjustments Restatement [Line Items] | |||||||||||
| Revenues and other | 685,054 | 518,078 | [1] | 1,356,937 | 1,019,132 | [1] | |||||
| Equity income, net – affiliates | 63,598 | 49,430 | [1] | 121,590 | 79,659 | [1] | |||||
| Net income (loss) | $ 176,979 | $ 214,450 | 68,123 | [1] | $ 182,870 | $ 391,429 | 250,993 | [1] | |||
| Anadarko Midstream Assets [Member] | |||||||||||
| Error Corrections and Prior Period Adjustments Restatement [Line Items] | |||||||||||
| Revenues and other | 58,686 | 110,350 | |||||||||
| Equity income, net – affiliates | 10,212 | 20,017 | |||||||||
| Net income (loss) | 32,604 | 63,126 | |||||||||
| Anadarko Midstream Assets [Member] | WES Operating [Member] | |||||||||||
| Error Corrections and Prior Period Adjustments Restatement [Line Items] | |||||||||||
| Revenues and other | 58,686 | 110,350 | |||||||||
| Equity income, net – affiliates | 10,212 | 20,017 | |||||||||
| Net income (loss) | 32,604 | 63,126 | |||||||||
| Anadarko Midstream Assets [Member] | Eliminations [Member] | |||||||||||
| Error Corrections and Prior Period Adjustments Restatement [Line Items] | |||||||||||
| Revenues and other | (8,527) | (15,939) | |||||||||
| Equity income, net – affiliates | 0 | 0 | |||||||||
| Net income (loss) | 0 | 0 | |||||||||
| Anadarko Midstream Assets [Member] | Eliminations [Member] | WES Operating [Member] | |||||||||||
| Error Corrections and Prior Period Adjustments Restatement [Line Items] | |||||||||||
| Revenues and other | (8,527) | (15,939) | |||||||||
| Equity income, net – affiliates | 0 | 0 | |||||||||
| Net income (loss) | 0 | 0 | |||||||||
| Historical financial data [Member] | |||||||||||
| Error Corrections and Prior Period Adjustments Restatement [Line Items] | |||||||||||
| Revenues and other | 467,919 | 924,721 | |||||||||
| Equity income, net – affiliates | 39,218 | 59,642 | |||||||||
| Net income (loss) | 34,563 | 185,051 | |||||||||
| Historical financial data [Member] | WES Operating [Member] | |||||||||||
| Error Corrections and Prior Period Adjustments Restatement [Line Items] | |||||||||||
| Revenues and other | 467,919 | 924,721 | |||||||||
| Equity income, net – affiliates | 39,218 | 59,642 | |||||||||
| Net income (loss) | $ 35,519 | $ 187,867 | |||||||||
| |||||||||||
Acquisitions and Divestitures - Additional Information (Details) $ in Thousands |
3 Months Ended | 6 Months Ended | ||||
|---|---|---|---|---|---|---|
Feb. 28, 2019 |
Jan. 18, 2019
USD ($)
|
Jun. 27, 2018
USD ($)
|
Jun. 01, 2018
USD ($)
|
Mar. 31, 2019
MBbls / d
Mcf / d
mi
bbl
|
Jun. 30, 2019
USD ($)
|
|
| Property, Plant and Equipment [Line Items] | ||||||
| Acquisition, net investment | $ | $ 92,546 | |||||
| Wattenberg Processing Plant [Member] | Cryogenic Train [Member] | ||||||
| Property, Plant and Equipment [Line Items] | ||||||
| Gas processing capacity | 190,000 | |||||
| Wattenberg Processing Plant [Member] | Refrigeration Train [Member] | ||||||
| Property, Plant and Equipment [Line Items] | ||||||
| Gas processing capacity | 100,000 | |||||
| DJ Basin Oil System [Member] | ||||||
| Property, Plant and Equipment [Line Items] | ||||||
| Oil processing capacity | MBbls / d | 155 | |||||
| DJ Basin Oil System [Member] | Pipelines [Member] | ||||||
| Property, Plant and Equipment [Line Items] | ||||||
| Pipeline miles | mi | 12 | |||||
| DJ Basin Oil System [Member] | Storage Tank [Member] | ||||||
| Property, Plant and Equipment [Line Items] | ||||||
| Storage capacity - barrels | bbl | 500,000 | |||||
| DBM Oil System [Member] | Pipelines [Member] | ||||||
| Property, Plant and Equipment [Line Items] | ||||||
| Pipeline miles | mi | 14 | |||||
| DBM Oil System [Member] | Storage Tank [Member] | ||||||
| Property, Plant and Equipment [Line Items] | ||||||
| Storage capacity - barrels | bbl | 30,000 | |||||
| DBM Oil System [Member] | Central Production Facilities [Member] | ||||||
| Property, Plant and Equipment [Line Items] | ||||||
| Oil processing capacity | MBbls / d | 75 | |||||
| DBM Oil System [Member] | Regional Oil Treating Facilities [Member] | ||||||
| Property, Plant and Equipment [Line Items] | ||||||
| Oil processing capacity | MBbls / d | 120 | |||||
| APC Water Systems [Member] | ||||||
| Property, Plant and Equipment [Line Items] | ||||||
| Produced water processing capacity | MBbls / d | 565 | |||||
| Saddlehorn [Member] | ||||||
| Property, Plant and Equipment [Line Items] | ||||||
| Ownership percentage acquired | 20.00% | |||||
| Saddlehorn [Member] | Storage Tank [Member] | ||||||
| Property, Plant and Equipment [Line Items] | ||||||
| Storage capacity - barrels | bbl | 300,000 | |||||
| Panola [Member] | ||||||
| Property, Plant and Equipment [Line Items] | ||||||
| Ownership percentage acquired | 15.00% | |||||
| Panola [Member] | Pipelines [Member] | ||||||
| Property, Plant and Equipment [Line Items] | ||||||
| Pipeline miles | mi | 248 | |||||
| Mi Vida [Member] | ||||||
| Property, Plant and Equipment [Line Items] | ||||||
| Gas processing capacity | 200,000 | |||||
| Ownership percentage acquired | 50.00% | |||||
| Ranch Westex [Member] | ||||||
| Property, Plant and Equipment [Line Items] | ||||||
| Ownership percentage acquired | 50.00% | |||||
| Ranch Westex [Member] | Cryogenic Train [Member] | ||||||
| Property, Plant and Equipment [Line Items] | ||||||
| Gas processing capacity | 100,000 | |||||
| Ranch Westex [Member] | Refrigeration Train [Member] | ||||||
| Property, Plant and Equipment [Line Items] | ||||||
| Gas processing capacity | 25,000 | |||||
| Red Bluff Express [Member] | ||||||
| Property, Plant and Equipment [Line Items] | ||||||
| Ownership percentage acquired | 30.00% | |||||
| Acquisition, net investment | $ | $ 92,500 | |||||
| Whitethorn LLC [Member] | ||||||
| Property, Plant and Equipment [Line Items] | ||||||
| Ownership percentage acquired | 20.00% | |||||
| Acquisition, net investment | $ | $ 150,600 | |||||
| Cactus II [Member] | ||||||
| Property, Plant and Equipment [Line Items] | ||||||
| Ownership percentage acquired | 15.00% | |||||
| Acquisition, net investment | $ | $ 12,100 |
Partnership Distributions - Cash Distributions Tables (Details) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | |||||
|---|---|---|---|---|---|---|
Jun. 30, 2019 |
Mar. 31, 2019 |
Dec. 31, 2018 |
Sep. 30, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
|
| Distribution Made to Limited Partner [Line Items] | ||||||
| Total quarterly distribution per unit | $ 0.61800 | $ 0.61000 | $ 0.60250 | $ 0.59500 | $ 0.58250 | $ 0.56875 |
| Total quarterly cash distribution | $ 279,959 | $ 276,324 | $ 131,910 | $ 130,268 | $ 127,531 | $ 124,518 |
| WES Operating [Member] | ||||||
| Distribution Made to Limited Partner [Line Items] | ||||||
| Total quarterly distribution per unit | $ 0.980 | $ 0.965 | $ 0.950 | $ 0.935 | ||
| Total quarterly cash distribution | $ 288,100 | $ 283,300 | $ 234,787 | $ 230,239 | $ 225,691 | $ 221,133 |
Partnership Distributions - Additional Information (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
Feb. 28, 2019 |
Jun. 30, 2019 |
Mar. 31, 2019 |
Dec. 31, 2018 |
Sep. 30, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Jun. 30, 2019 |
|
| Distribution Made to Limited Partner [Line Items] | ||||||||
| Partnership agreement day requirement of distribution of available cash | 55 days | |||||||
| Common units outstanding | 453,008,854 | 218,937,797 | 453,008,854 | |||||
| Total quarterly cash distribution | $ 279,959 | $ 276,324 | $ 131,910 | $ 130,268 | $ 127,531 | $ 124,518 | ||
| WES Operating [Member] | ||||||||
| Distribution Made to Limited Partner [Line Items] | ||||||||
| Total quarterly cash distribution | $ 288,100 | $ 283,300 | $ 234,787 | $ 230,239 | $ 225,691 | $ 221,133 | ||
| Distribution sharing percentage | 1.50% | |||||||
| Incentive distributions percentage | 48.00% | |||||||
| WES Operating [Member] | Common Units [Member] | ||||||||
| Distribution Made to Limited Partner [Line Items] | ||||||||
| Common units outstanding | 152,609,285 | |||||||
| WES Operating [Member] | Class C Units [Member] | ||||||||
| Distribution Made to Limited Partner [Line Items] | ||||||||
| Common units outstanding | 14,681,388 | |||||||
| Class C units, discount rate percentage on distribution | 6.00% | |||||||
| Class C units, common units issued upon conversion | 1 | |||||||
| WES Operating [Member] | Anadarko [Member] | Common Units [Member] | ||||||||
| Distribution Made to Limited Partner [Line Items] | ||||||||
| Common units outstanding | 6,400,000 | 6,400,000 | ||||||
Equity and Partners' Capital - WES Units Table (Details) - shares |
6 Months Ended | ||
|---|---|---|---|
Feb. 28, 2019 |
Jun. 30, 2019 |
Dec. 31, 2018 |
|
| Capital Unit [Line Items] | |||
| Limited partner units | 453,008,854 | 218,937,797 | |
| Conversion ratio per unit | 1.525 | ||
| Anadarko Midstream Assets [Member] | |||
| Capital Unit [Line Items] | |||
| Conversion ratio per unit | 1.4056 | ||
| WES Operating [Member] | |||
| Capital Unit [Line Items] | |||
| Units issued | 308,723 | ||
| Conversion of units | 0 | ||
| WES Operating [Member] | Anadarko Midstream Assets [Member] | |||
| Capital Unit [Line Items] | |||
| Units issued | 45,760,201 | ||
| Common Units [Member] | WES [Member] | |||
| Capital Unit [Line Items] | |||
| Limited partner units | 452,990,862 | 218,937,797 | |
| Conversion of units | 178,692,081 | ||
| Common Units [Member] | WES [Member] | Anadarko Midstream Assets [Member] | |||
| Capital Unit [Line Items] | |||
| Conversion of units | 55,360,984 | ||
| Common Units [Member] | WES Operating [Member] | |||
| Capital Unit [Line Items] | |||
| Limited partner units | 152,609,285 | ||
| Units subject to conversion | 117,158,627 | ||
| Conversion of units | 105,624,704 | 14,681,388 | |
| Common Units [Member] | WES Operating [Member] | Anadarko Midstream Assets [Member] | |||
| Capital Unit [Line Items] | |||
| Units issued | 45,760,201 | 45,760,201 | |
| Units subject to conversion | 39,384,917 | ||
| Class C Units [Member] | WES Operating [Member] | |||
| Capital Unit [Line Items] | |||
| Limited partner units | 14,681,388 | ||
| Units issued | 308,723 | ||
| Conversion of units | (14,681,388) | ||
| WES Operating [Member] | Common Units [Member] | WES [Member] | |||
| Capital Unit [Line Items] | |||
| Limited partner units | 50,132,046 | ||
| WES Operating [Member] | Common Units [Member] | Anadarko [Member] | |||
| Capital Unit [Line Items] | |||
| Limited partner units | 6,400,000 | ||
| WES Operating [Member] | Common Units [Member] | Anadarko [Member] | Anadarko Midstream Assets [Member] | |||
| Capital Unit [Line Items] | |||
| Limited partner units | 6,375,284 |
Equity and Partners' Capital - WES Operating Interests Table (Details) - WES Operating [Member] - shares |
6 Months Ended | |
|---|---|---|
Feb. 28, 2019 |
Jun. 30, 2019 |
|
| Change In Units [Roll Forward] | ||
| Balance | 169,565,018 | |
| Units issued | 308,723 | |
| Conversion of Class C units | 0 | |
| IDR and General partner unit conversion | 103,041,636 | |
| Balance | 318,675,578 | |
| Anadarko Midstream Assets [Member] | ||
| Change In Units [Roll Forward] | ||
| Units issued | 45,760,201 | |
| Common Units [Member] | ||
| Change In Units [Roll Forward] | ||
| Balance | 152,609,285 | |
| Conversion of Class C units | 105,624,704 | 14,681,388 |
| IDR and General partner unit conversion | 105,624,704 | |
| Balance | 318,675,578 | |
| Common Units [Member] | Anadarko Midstream Assets [Member] | ||
| Change In Units [Roll Forward] | ||
| Units issued | 45,760,201 | 45,760,201 |
| Class C Units [Member] | ||
| Change In Units [Roll Forward] | ||
| Balance | 14,372,665 | |
| Units issued | 308,723 | |
| Conversion of Class C units | (14,681,388) | |
| Balance | 0 | |
| General Partner [Member] | ||
| Change In Units [Roll Forward] | ||
| Balance | 2,583,068 | |
| IDR and General partner unit conversion | (2,583,068) | |
| Balance | 0 |
Equity and Partners' Capital - Calculation of WES Operating Net Income (Loss) Per Unit Table (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands |
3 Months Ended | 6 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
||||||||
| Earnings Per Unit [Line Items] | |||||||||||
| Net income (loss) attributable to Western Midstream Operating, LP | $ 169,594 | $ 100,184 | [1] | $ 288,254 | $ 231,711 | [1] | |||||
| Pre-acquisition net (income) loss allocated to Anadarko | (163) | (32,604) | [1] | (29,279) | (63,126) | [1] | |||||
| Limited partners' interest in net income (loss) | 169,431 | 67,580 | [1] | 258,975 | 168,585 | [1] | |||||
| WES Operating [Member] | |||||||||||
| Earnings Per Unit [Line Items] | |||||||||||
| Net income (loss) attributable to Western Midstream Operating, LP | 175,012 | 65,312 | [1] | 387,608 | 245,197 | [1] | |||||
| Pre-acquisition net (income) loss allocated to Anadarko | (163) | (32,604) | [1] | (29,279) | (63,126) | [1] | |||||
| General partner interest in net (income) loss | [2] | $ 0 | (84,176) | [1] | $ 0 | (167,615) | [1] | ||||
| WES Operating [Member] | Common and Class C Units [Member] | |||||||||||
| Earnings Per Unit [Line Items] | |||||||||||
| Limited partners' interest in net income (loss) | (51,468) | 14,456 | |||||||||
| WES Operating [Member] | Common Units [Member] | |||||||||||
| Earnings Per Unit [Line Items] | |||||||||||
| Limited partners' interest in net income (loss) | $ (48,417) | $ 9,906 | |||||||||
| Net income (loss) per common unit - basic and diluted | [1],[2] | $ (0.32) | $ 0.06 | ||||||||
| Weighted-average common units outstanding - basic and diluted | 152,604 | 152,603 | |||||||||
| WES Operating [Member] | Class C Units [Member] | |||||||||||
| Earnings Per Unit [Line Items] | |||||||||||
| Limited partners' interest in net income (loss) | $ (3,051) | $ 4,550 | |||||||||
| Anti-dilutive units excluded from computation of earnings per unit | 13,649 | 13,516 | |||||||||
| |||||||||||
Equity and Partners' Capital - Additional Information (Details) - USD ($) $ in Millions |
1 Months Ended | 6 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
Nov. 30, 2014 |
Jun. 30, 2019 |
Dec. 31, 2014 |
Feb. 28, 2019 |
Dec. 31, 2018 |
|
| Schedule of Investments [Line Items] | |||||
| Limited partner units | 453,008,854 | 218,937,797 | |||
| Class C Units [Member] | |||||
| Schedule of Investments [Line Items] | |||||
| Beneficial conversion feature | $ 34.8 | ||||
| WES [Member] | Public [Member] | |||||
| Schedule of Investments [Line Items] | |||||
| Limited partner units | 201,811,237 | ||||
| Ownership interest | 44.50% | ||||
| WES [Member] | WES Operating [Member] | |||||
| Schedule of Investments [Line Items] | |||||
| Ownership interest | 98.00% | ||||
| Anadarko [Member] | WES [Member] | |||||
| Schedule of Investments [Line Items] | |||||
| Limited partner units | 251,197,617 | ||||
| Ownership interest | 55.50% | ||||
| Anadarko [Member] | WES Operating [Member] | |||||
| Schedule of Investments [Line Items] | |||||
| Ownership interest | 2.00% | ||||
| WES Operating [Member] | |||||
| Schedule of Investments [Line Items] | |||||
| Units issued | 308,723 | ||||
| WES Operating [Member] | Class C Units [Member] | |||||
| Schedule of Investments [Line Items] | |||||
| Limited partner units | 14,681,388 | ||||
| Units issued | 308,723 | ||||
| Class C units, common units issued upon conversion | 1 | ||||
| WES Operating [Member] | Class C Units [Member] | Other Subsidiaries of Anadarko [Member] | |||||
| Schedule of Investments [Line Items] | |||||
| Units issued | 10,913,853 |
Transactions with Affiliates - Commodity Price Swap Agreements Tables (Details) - Year 2018 [Member] |
Dec. 31, 2018
$ / MMBTU
$ / bbl
|
Dec. 20, 2017
$ / MMBTU
$ / bbl
|
|---|---|---|
| DJ Basin Complex [Member] | Ethane [Member] | ||
| Commodity Price Risk Swap [Line Items] | ||
| Commodity swap fixed price | 18.41 | |
| Commodity market price | 5.41 | |
| DJ Basin Complex [Member] | Propane [Member] | ||
| Commodity Price Risk Swap [Line Items] | ||
| Commodity swap fixed price | 47.08 | |
| Commodity market price | 28.72 | |
| DJ Basin Complex [Member] | Isobutane [Member] | ||
| Commodity Price Risk Swap [Line Items] | ||
| Commodity swap fixed price | 62.09 | |
| Commodity market price | 32.92 | |
| DJ Basin Complex [Member] | Normal Butane [Member] | ||
| Commodity Price Risk Swap [Line Items] | ||
| Commodity swap fixed price | 54.62 | |
| Commodity market price | 32.71 | |
| DJ Basin Complex [Member] | Natural Gasoline [Member] | ||
| Commodity Price Risk Swap [Line Items] | ||
| Commodity swap fixed price | 72.88 | |
| Commodity market price | 48.04 | |
| DJ Basin Complex [Member] | Condensate [Member] | ||
| Commodity Price Risk Swap [Line Items] | ||
| Commodity swap fixed price | 76.47 | |
| Commodity market price | 49.36 | |
| DJ Basin Complex [Member] | Natural Gas (per MMBtu) [Member] | ||
| Commodity Price Risk Swap [Line Items] | ||
| Commodity swap fixed price | $ / MMBTU | 5.96 | |
| Commodity market price | $ / MMBTU | 2.21 | |
| MGR Assets [Member] | Ethane [Member] | ||
| Commodity Price Risk Swap [Line Items] | ||
| Commodity swap fixed price | 23.11 | |
| Commodity market price | 2.52 | |
| MGR Assets [Member] | Propane [Member] | ||
| Commodity Price Risk Swap [Line Items] | ||
| Commodity swap fixed price | 52.90 | |
| Commodity market price | 25.83 | |
| MGR Assets [Member] | Isobutane [Member] | ||
| Commodity Price Risk Swap [Line Items] | ||
| Commodity swap fixed price | 73.89 | |
| Commodity market price | 30.03 | |
| MGR Assets [Member] | Normal Butane [Member] | ||
| Commodity Price Risk Swap [Line Items] | ||
| Commodity swap fixed price | 64.93 | |
| Commodity market price | 29.82 | |
| MGR Assets [Member] | Natural Gasoline [Member] | ||
| Commodity Price Risk Swap [Line Items] | ||
| Commodity swap fixed price | 81.68 | |
| Commodity market price | 47.25 | |
| MGR Assets [Member] | Condensate [Member] | ||
| Commodity Price Risk Swap [Line Items] | ||
| Commodity swap fixed price | 81.68 | |
| Commodity market price | 56.76 | |
| MGR Assets [Member] | Natural Gas (per MMBtu) [Member] | ||
| Commodity Price Risk Swap [Line Items] | ||
| Commodity swap fixed price | $ / MMBTU | 4.87 | |
| Commodity market price | $ / MMBTU | 2.21 |
Transactions with Affiliates - Summary of Affiliate Transactions Tables (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
|||||||||||||||||||
| Related Party Transaction [Line Items] | ||||||||||||||||||||||
| Revenues and other | $ 685,054 | $ 518,078 | [1] | $ 1,356,937 | $ 1,019,132 | [1] | ||||||||||||||||
| Equity income, net – affiliates | 63,598 | 49,430 | [1] | 121,590 | 79,659 | [1] | ||||||||||||||||
| Cost of product | [2] | 122,877 | 95,656 | [1] | 236,940 | 189,974 | [1] | |||||||||||||||
| Operation and maintenance | [2] | 148,431 | 112,789 | [1] | 291,260 | 209,584 | [1] | |||||||||||||||
| General and administrative | [2] | 30,027 | 15,597 | [1] | 52,871 | 31,426 | [1] | |||||||||||||||
| Operating expenses | 437,531 | 453,464 | [1] | 847,888 | 759,996 | [1] | ||||||||||||||||
| Interest income | 4,225 | 4,225 | [1] | 8,450 | 8,450 | [1] | ||||||||||||||||
| Interest expense | [3] | 79,472 | 42,245 | [1] | 145,348 | 80,260 | [1] | |||||||||||||||
| Distributions to unitholders | [4] | 408,234 | 244,658 | [1] | ||||||||||||||||||
| Above-market component of swap agreements with Anadarko | 0 | 13,839 | 7,407 | [4] | 28,121 | [1],[4] | ||||||||||||||||
| WES Operating [Member] | ||||||||||||||||||||||
| Related Party Transaction [Line Items] | ||||||||||||||||||||||
| Revenues and other | 685,054 | 518,078 | [1] | 1,356,937 | 1,019,132 | [1] | ||||||||||||||||
| Equity income, net – affiliates | 63,598 | 49,430 | [1] | 121,590 | 79,659 | [1] | ||||||||||||||||
| Cost of product | [5] | 122,877 | 95,656 | [1] | 236,940 | 189,974 | [1] | |||||||||||||||
| Operation and maintenance | [5] | 148,431 | 112,789 | [1] | 291,260 | 209,584 | [1] | |||||||||||||||
| General and administrative | [5] | 28,101 | 14,901 | [1] | 48,661 | 29,898 | [1] | |||||||||||||||
| Operating expenses | 435,605 | 452,768 | [1] | 843,678 | 758,468 | [1] | ||||||||||||||||
| Interest income | 4,225 | 4,225 | [1] | 8,450 | 8,450 | [1] | ||||||||||||||||
| Interest expense | [6] | 79,472 | 41,937 | [1] | 145,103 | 78,889 | [1] | |||||||||||||||
| Distributions to unitholders | [7] | 546,629 | 437,719 | [1] | ||||||||||||||||||
| Above-market component of swap agreements with Anadarko | [7] | 7,407 | 28,121 | [1] | ||||||||||||||||||
| Affiliates [Member] | ||||||||||||||||||||||
| Related Party Transaction [Line Items] | ||||||||||||||||||||||
| Revenues and other | 385,184 | 289,544 | [1] | 763,621 | 574,720 | [1] | ||||||||||||||||
| Cost of product | 68,225 | 38,001 | 124,397 | 72,820 | ||||||||||||||||||
| Operation and maintenance | 32,318 | 26,826 | 71,459 | 49,827 | ||||||||||||||||||
| General and administrative | 26,892 | 12,262 | 45,786 | 24,950 | ||||||||||||||||||
| Operating expenses | 127,435 | 77,089 | 241,642 | 147,597 | ||||||||||||||||||
| Interest expense | 20 | 1,409 | 1,853 | 1,986 | ||||||||||||||||||
| APCWH Note Payable borrowings | 0 | 81,343 | 11,000 | 187,908 | ||||||||||||||||||
| Repayment of APCWH Note Payable | 0 | 0 | 439,595 | 0 | ||||||||||||||||||
| Distributions to unitholders | 153,231 | 101,571 | 255,885 | 199,571 | ||||||||||||||||||
| Affiliates [Member] | WES Operating [Member] | ||||||||||||||||||||||
| Related Party Transaction [Line Items] | ||||||||||||||||||||||
| Revenues and other | 385,184 | 289,544 | [1] | 763,621 | 574,720 | [1] | ||||||||||||||||
| Cost of product | 68,200 | 38,000 | 124,400 | 72,800 | ||||||||||||||||||
| Operation and maintenance | 32,300 | 26,800 | 71,500 | 49,800 | ||||||||||||||||||
| General and administrative | 26,380 | 12,044 | 44,878 | 24,523 | ||||||||||||||||||
| Interest expense | 20 | 1,400 | 1,900 | 2,000 | ||||||||||||||||||
| Distributions to unitholders | 283,271 | 127,204 | 448,173 | 251,368 | ||||||||||||||||||
| Affiliates [Member] | WES Operating [Member] | ||||||||||||||||||||||
| Related Party Transaction [Line Items] | ||||||||||||||||||||||
| Distributions to unitholders | $ 5,667 | $ 1,881 | $ 8,210 | $ 3,731 | ||||||||||||||||||
| ||||||||||||||||||||||
Transactions with Affiliates - Additional Information (Details) - USD ($) |
1 Months Ended | 3 Months Ended | 6 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|---|
May 31, 2008 |
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
Dec. 31, 2018 |
||||
| Related Party Transaction [Line Items] | |||||||||
| Note receivable - Anadarko | $ 260,000,000 | $ 260,000,000 | $ 260,000,000 | [1] | |||||
| Long-Term Incentive Plans [Member] | |||||||||
| Related Party Transaction [Line Items] | |||||||||
| Units vesting period | 3 years | ||||||||
| Natural Gas [Member] | Gathering, Treating, Transportation and Disposal [Member] | |||||||||
| Related Party Transaction [Line Items] | |||||||||
| Affiliate throughput percent | 5.00% | 6.00% | 6.00% | 7.00% | |||||
| Natural Gas [Member] | Processing [Member] | |||||||||
| Related Party Transaction [Line Items] | |||||||||
| Affiliate throughput percent | 42.00% | 39.00% | 41.00% | 40.00% | |||||
| Crude Oil, NGLs and Produced Water [Member] | Gathering, Treating, Transportation and Disposal [Member] | |||||||||
| Related Party Transaction [Line Items] | |||||||||
| Affiliate throughput percent | 82.00% | 82.00% | 83.00% | 80.00% | |||||
| Commodity Price Swap Agreement [Member] | |||||||||
| Related Party Transaction [Line Items] | |||||||||
| Net gains (losses) on commodity price swap agreements | $ 0 | $ (1,372,000) | $ (667,000) | $ (2,615,000) | |||||
| Affiliates [Member] | Commodity Price Swap Agreement [Member] | |||||||||
| Related Party Transaction [Line Items] | |||||||||
| Net gains (losses) on commodity price swap agreements | 0 | $ (1,400,000) | (700,000) | $ (2,600,000) | |||||
| Affiliates [Member] | Level 2 Inputs [Member] | Valuation, Market Approach [Member] | |||||||||
| Related Party Transaction [Line Items] | |||||||||
| Fair value of the note receivable | 325,600,000 | $ 325,600,000 | 279,600,000 | ||||||
| Independent Director [Member] | Long-Term Incentive Plans [Member] | |||||||||
| Related Party Transaction [Line Items] | |||||||||
| Units vesting period | 1 year | ||||||||
| WES Operating [Member] | |||||||||
| Related Party Transaction [Line Items] | |||||||||
| Note receivable - Anadarko | $ 260,000,000 | $ 260,000,000 | $ 260,000,000 | [1] | |||||
| WES Operating [Member] | Affiliates [Member] | |||||||||
| Related Party Transaction [Line Items] | |||||||||
| Note receivable - Anadarko | $ 260,000,000.0 | ||||||||
| Fixed annual rate for note receivable bearing interest | 6.50% | ||||||||
| |||||||||
Property, Plant and Equipment - Historical Cost Table (Details) - USD ($) $ in Thousands |
6 Months Ended | ||||
|---|---|---|---|---|---|
Jun. 30, 2019 |
Dec. 31, 2018 |
||||
| Property, Plant and Equipment [Line Items] | |||||
| Property, plant and equipment | $ 11,852,158 | $ 11,258,773 | [1] | ||
| Less accumulated depreciation | 3,058,512 | 2,848,420 | [1] | ||
| Net property, plant and equipment | 8,793,646 | 8,410,353 | [1] | ||
| Land [Member] | |||||
| Property, Plant and Equipment [Line Items] | |||||
| Property, plant and equipment | 8,863 | 5,298 | |||
| Gathering Systems – Pipelines [Member] | |||||
| Property, Plant and Equipment [Line Items] | |||||
| Property, plant and equipment | $ 4,938,224 | 4,764,099 | |||
| Estimated useful life | 30 years | ||||
| Gathering Systems – Compressors [Member] | |||||
| Property, Plant and Equipment [Line Items] | |||||
| Property, plant and equipment | $ 1,839,353 | 1,712,939 | |||
| Estimated useful life | 15 years | ||||
| Processing Complexes And Treating Facilities [Member] | |||||
| Property, Plant and Equipment [Line Items] | |||||
| Property, plant and equipment | $ 2,952,268 | 2,844,337 | |||
| Estimated useful life | 25 years | ||||
| Transportation Pipeline And Equipment [Member] | |||||
| Property, Plant and Equipment [Line Items] | |||||
| Property, plant and equipment | $ 172,807 | 172,558 | |||
| Transportation Pipeline And Equipment [Member] | Minimum [Member] | |||||
| Property, Plant and Equipment [Line Items] | |||||
| Estimated useful life | 6 years | ||||
| Transportation Pipeline And Equipment [Member] | Maximum [Member] | |||||
| Property, Plant and Equipment [Line Items] | |||||
| Estimated useful life | 45 years | ||||
| Produced Water Disposal Systems [Member] | |||||
| Property, Plant and Equipment [Line Items] | |||||
| Property, plant and equipment | $ 697,949 | 629,946 | |||
| Estimated useful life | 20 years | ||||
| Assets Under Construction [Member] | |||||
| Property, Plant and Equipment [Line Items] | |||||
| Property, plant and equipment | $ 660,397 | 604,265 | |||
| Other [Member] | |||||
| Property, Plant and Equipment [Line Items] | |||||
| Property, plant and equipment | $ 582,297 | $ 525,331 | |||
| 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 Equipment - Additional Information (Details) - USD ($) |
3 Months Ended | 6 Months Ended | 12 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
[1] | Jun. 30, 2019 |
Jun. 30, 2018 |
[1] | Dec. 31, 2018 |
|||
| Property, Plant and Equipment [Line Items] | |||||||||
| Impairments | $ 797,000 | $ 127,184,000 | $ 1,187,000 | $ 127,384,000 | $ 230,600,000 | ||||
| Third Creek Gathering System [Member] | |||||||||
| Property, Plant and Equipment [Line Items] | |||||||||
| Impairments | 125,900,000 | ||||||||
| Third Creek Gathering System [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 3 Inputs [Member] | Valuation, Market Approach [Member] | |||||||||
| Property, Plant and Equipment [Line Items] | |||||||||
| Estimated salvage value | 1,800,000 | ||||||||
| Kitty Draw Gathering System [Member] | |||||||||
| Property, Plant and Equipment [Line Items] | |||||||||
| Impairments | 8,100,000 | ||||||||
| Kitty Draw Gathering System [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 3 Inputs [Member] | Valuation, Market Approach [Member] | |||||||||
| Property, Plant and Equipment [Line Items] | |||||||||
| Estimated salvage value | 0 | ||||||||
| Hilight System [Member] | |||||||||
| Property, Plant and Equipment [Line Items] | |||||||||
| Impairments | 38,700,000 | ||||||||
| Hilight System [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 3 Inputs [Member] | Valuation, Income Approach [Member] | |||||||||
| Property, Plant and Equipment [Line Items] | |||||||||
| Estimated fair value | 4,900,000 | ||||||||
| MIGC System [Member] | |||||||||
| Property, Plant and Equipment [Line Items] | |||||||||
| Impairments | 34,600,000 | ||||||||
| MIGC System [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 3 Inputs [Member] | Valuation, Income Approach [Member] | |||||||||
| Property, Plant and Equipment [Line Items] | |||||||||
| Estimated fair value | 15,200,000 | ||||||||
| Equipment [Member] | |||||||||
| Property, Plant and Equipment [Line Items] | |||||||||
| Impairments | 23,300,000 | ||||||||
| GNB NGL Pipeline [Member] | |||||||||
| Property, Plant and Equipment [Line Items] | |||||||||
| Impairments | 10,900,000 | ||||||||
| GNB NGL Pipeline [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 3 Inputs [Member] | Valuation, Income Approach [Member] | |||||||||
| Property, Plant and Equipment [Line Items] | |||||||||
| Estimated fair value | 10,000,000.0 | ||||||||
| Chipeta Complex [Member] | |||||||||
| Property, Plant and Equipment [Line Items] | |||||||||
| Impairments | 5,600,000 | ||||||||
| Chipeta Complex [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 3 Inputs [Member] | Valuation, Market Approach [Member] | |||||||||
| Property, Plant and Equipment [Line Items] | |||||||||
| Estimated salvage value | $ 1,500,000 | ||||||||
| |||||||||
Equity Investments - Equity Investments Table (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
[1] | Jun. 30, 2019 |
Jun. 30, 2018 |
[1] | |||
| Schedule of Equity Method Investments [Line Items] | ||||||||
| Balance | [1] | $ 1,092,088 | ||||||
| Acquisitions | 92,546 | |||||||
| Equity income, net | $ 63,598 | $ 49,430 | 121,590 | $ 79,659 | ||||
| Contributions | 77,333 | 27,490 | ||||||
| Distributions | (115,483) | (65,525) | ||||||
| Distributions in excess of cumulative earnings | (17,052) | $ (13,632) | ||||||
| Balance | 1,249,509 | 1,249,509 | ||||||
| Equity Investments [Member] | ||||||||
| Schedule of Equity Method Investments [Line Items] | ||||||||
| Distributions | (116,996) | |||||||
| Fort Union [Member] | ||||||||
| Schedule of Equity Method Investments [Line Items] | ||||||||
| Balance | 2,259 | |||||||
| Acquisitions | 0 | |||||||
| Equity income, net | (1,093) | |||||||
| Contributions | 0 | |||||||
| Distributions | 0 | |||||||
| Distributions in excess of cumulative earnings | (389) | |||||||
| Balance | 777 | 777 | ||||||
| White Cliffs [Member] | ||||||||
| Schedule of Equity Method Investments [Line Items] | ||||||||
| Balance | 43,020 | |||||||
| Acquisitions | 0 | |||||||
| Equity income, net | 5,689 | |||||||
| Contributions | 3,925 | |||||||
| Distributions | (5,398) | |||||||
| Distributions in excess of cumulative earnings | (1,756) | |||||||
| Balance | 45,480 | 45,480 | ||||||
| Rendezvous [Member] | ||||||||
| Schedule of Equity Method Investments [Line Items] | ||||||||
| Balance | 37,841 | |||||||
| Acquisitions | 0 | |||||||
| Equity income, net | 341 | |||||||
| Contributions | 0 | |||||||
| Distributions | (1,312) | |||||||
| Distributions in excess of cumulative earnings | (1,614) | |||||||
| Balance | 35,256 | 35,256 | ||||||
| Mont Belvieu JV [Member] | ||||||||
| Schedule of Equity Method Investments [Line Items] | ||||||||
| Balance | 104,949 | |||||||
| Acquisitions | 0 | |||||||
| Equity income, net | 14,404 | |||||||
| Contributions | 0 | |||||||
| Distributions | (14,424) | |||||||
| Distributions in excess of cumulative earnings | (1,376) | |||||||
| Balance | 103,553 | 103,553 | ||||||
| Texas Express Gathering [Member] | ||||||||
| Schedule of Equity Method Investments [Line Items] | ||||||||
| Balance | 19,358 | |||||||
| Acquisitions | 0 | |||||||
| Equity income, net | 1,847 | |||||||
| Contributions | 0 | |||||||
| Distributions | (1,858) | |||||||
| Distributions in excess of cumulative earnings | (493) | |||||||
| Balance | 18,854 | 18,854 | ||||||
| Texas Express Pipeline [Member] | ||||||||
| Schedule of Equity Method Investments [Line Items] | ||||||||
| Balance | 193,198 | |||||||
| Acquisitions | 0 | |||||||
| Equity income, net | 16,322 | |||||||
| Contributions | 11,020 | |||||||
| Distributions | (16,785) | |||||||
| Distributions in excess of cumulative earnings | 0 | |||||||
| Balance | 203,755 | 203,755 | ||||||
| Front Range Pipeline [Member] | ||||||||
| Schedule of Equity Method Investments [Line Items] | ||||||||
| Balance | 176,436 | |||||||
| Acquisitions | 0 | |||||||
| Equity income, net | 16,251 | |||||||
| Contributions | 10,175 | |||||||
| Distributions | (15,483) | |||||||
| Distributions in excess of cumulative earnings | 0 | |||||||
| Balance | 187,379 | 187,379 | ||||||
| Whitethorn LLC [Member] | ||||||||
| Schedule of Equity Method Investments [Line Items] | ||||||||
| Balance | 161,858 | |||||||
| Acquisitions | 0 | |||||||
| Equity income, net | 44,921 | |||||||
| Contributions | 8,865 | |||||||
| Distributions | (40,359) | |||||||
| Distributions in excess of cumulative earnings | (6,359) | |||||||
| Balance | 168,926 | 168,926 | ||||||
| Cactus II [Member] | ||||||||
| Schedule of Equity Method Investments [Line Items] | ||||||||
| Balance | 106,360 | |||||||
| Acquisitions | 0 | |||||||
| Equity income, net | 0 | |||||||
| Contributions | 34,643 | |||||||
| Distributions | 0 | |||||||
| Distributions in excess of cumulative earnings | 0 | |||||||
| Balance | 141,003 | 141,003 | ||||||
| Capitalized interest | 3,100 | |||||||
| Saddlehorn [Member] | ||||||||
| Schedule of Equity Method Investments [Line Items] | ||||||||
| Balance | 108,507 | |||||||
| Acquisitions | 0 | |||||||
| Equity income, net | 11,438 | |||||||
| Contributions | 1,026 | |||||||
| Distributions | (8,180) | |||||||
| Distributions in excess of cumulative earnings | 0 | |||||||
| Balance | 112,791 | 112,791 | ||||||
| Panola [Member] | ||||||||
| Schedule of Equity Method Investments [Line Items] | ||||||||
| Balance | 22,769 | |||||||
| Acquisitions | 0 | |||||||
| Equity income, net | 1,075 | |||||||
| Contributions | 0 | |||||||
| Distributions | (1,075) | |||||||
| Distributions in excess of cumulative earnings | (553) | |||||||
| Balance | 22,216 | 22,216 | ||||||
| Mi Vida [Member] | ||||||||
| Schedule of Equity Method Investments [Line Items] | ||||||||
| Balance | 64,631 | |||||||
| Acquisitions | 0 | |||||||
| Equity income, net | 5,840 | |||||||
| Contributions | 0 | |||||||
| Distributions | (6,193) | |||||||
| Distributions in excess of cumulative earnings | (2,743) | |||||||
| Balance | 61,535 | 61,535 | ||||||
| Ranch Westex [Member] | ||||||||
| Schedule of Equity Method Investments [Line Items] | ||||||||
| Balance | 50,902 | |||||||
| Acquisitions | 0 | |||||||
| Equity income, net | 3,745 | |||||||
| Contributions | 0 | |||||||
| Distributions | (5,119) | |||||||
| Distributions in excess of cumulative earnings | (1,465) | |||||||
| Balance | 48,063 | 48,063 | ||||||
| Red Bluff Express [Member] | ||||||||
| Schedule of Equity Method Investments [Line Items] | ||||||||
| Balance | 0 | |||||||
| Acquisitions | 92,546 | |||||||
| Equity income, net | 810 | |||||||
| Contributions | 7,679 | |||||||
| Distributions | (810) | |||||||
| Distributions in excess of cumulative earnings | (304) | |||||||
| Balance | $ 99,921 | $ 99,921 | ||||||
| ||||||||
Components of Working Capital - Accounts Receivable, Net Table (Details) - USD ($) $ in Thousands |
Jun. 30, 2019 |
Dec. 31, 2018 |
||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Trade receivables, net | $ 219,924 | $ 221,119 | ||||||||
| Other receivables, net | 0 | 45 | ||||||||
| Total accounts receivable, net | [1] | 219,924 | 221,164 | [2] | ||||||
| WES Operating [Member] | ||||||||||
| Trade receivables, net | 220,352 | 221,328 | ||||||||
| Other receivables, net | 0 | 45 | ||||||||
| Total accounts receivable, net | [3] | $ 220,352 | $ 221,373 | [2] | ||||||
| ||||||||||
Components of Working Capital - Other Current Assets Table (Details) - USD ($) $ in Thousands |
Jun. 30, 2019 |
Dec. 31, 2018 |
||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| NGLs inventory | $ 3,589 | $ 6,466 | ||||||||
| Imbalance receivables | 3,117 | 9,035 | ||||||||
| Prepaid insurance | 1,259 | 1,972 | ||||||||
| Contract assets | 12,501 | 5,399 | ||||||||
| Other | 0 | 4,184 | ||||||||
| Total other current assets | [1] | 20,466 | 27,056 | [2] | ||||||
| WES Operating [Member] | ||||||||||
| NGLs inventory | 3,589 | 6,466 | ||||||||
| Imbalance receivables | 3,117 | 9,035 | ||||||||
| Prepaid insurance | 587 | 1,972 | ||||||||
| Contract assets | 12,501 | 5,399 | ||||||||
| Other | 0 | 3,309 | ||||||||
| Total other current assets | [3] | $ 19,794 | $ 26,181 | [2] | ||||||
| ||||||||||
Components of Working Capital - Accrued Liabilities Table (Details) - USD ($) $ in Thousands |
Jun. 30, 2019 |
Dec. 31, 2018 |
|||
|---|---|---|---|---|---|
| Accrued interest expense | $ 72,309 | $ 70,968 | |||
| Short-term asset retirement obligations | 24,564 | 25,938 | |||
| Short-term remediation and reclamation obligations | 863 | 863 | |||
| Income taxes payable | 1,319 | 384 | |||
| Contract liabilities | 6,620 | 16,235 | |||
| Other | 114,051 | 14,760 | |||
| Total accrued liabilities | 219,726 | 129,148 | [1] | ||
| WES Operating [Member] | |||||
| Accrued interest expense | 72,309 | 70,959 | |||
| Short-term asset retirement obligations | 24,564 | 25,938 | |||
| Short-term remediation and reclamation obligations | 863 | 863 | |||
| Income taxes payable | 1,319 | 384 | |||
| Contract liabilities | 6,620 | 16,235 | |||
| Other | 113,518 | 13,495 | |||
| Total accrued liabilities | $ 219,193 | $ 127,874 | [1] | ||
| |||||
Debt and Interest Expense - Debt Outstanding Table (Details) - USD ($) |
Jun. 30, 2019 |
Dec. 31, 2018 |
Jun. 30, 2018 |
||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Debt Instrument [Line Items] | |||||||||||
| Short-term debt, principal | $ 8,381,000 | $ 28,000,000 | |||||||||
| Short-term debt, carrying value | [1] | 8,381,000 | 28,000,000 | [2] | |||||||
| Long-term debt, carrying value | 7,489,448,000 | 4,787,381,000 | [2] | ||||||||
| Valuation, Market Approach [Member] | Level 2 Inputs [Member] | |||||||||||
| Debt Instrument [Line Items] | |||||||||||
| Short-term debt, fair value | 8,381,000 | 28,000,000 | |||||||||
| Long Term Debt Obligations [Member] | |||||||||||
| Debt Instrument [Line Items] | |||||||||||
| Total long-term debt, principal | 7,540,000,000 | 5,267,493,000 | |||||||||
| Long-term debt, carrying value | 7,489,448,000 | 5,214,874,000 | |||||||||
| Long Term Debt Obligations [Member] | Valuation, Market Approach [Member] | Level 2 Inputs [Member] | |||||||||||
| Debt Instrument [Line Items] | |||||||||||
| Long-term debt, fair value | 7,484,533,000 | 4,976,815,000 | |||||||||
| WES [Member] | WGP RCF [Member] | Revolving Credit Facility [Member] | |||||||||||
| Debt Instrument [Line Items] | |||||||||||
| Principal | 0 | 28,000,000 | |||||||||
| Short-term debt, carrying value | 0 | 28,000,000 | |||||||||
| WES [Member] | WGP RCF [Member] | Revolving Credit Facility [Member] | Valuation, Market Approach [Member] | Level 2 Inputs [Member] | |||||||||||
| Debt Instrument [Line Items] | |||||||||||
| Short-term debt, fair value | 0 | 28,000,000 | |||||||||
| WES Operating [Member] | |||||||||||
| Debt Instrument [Line Items] | |||||||||||
| Short-term debt, carrying value | [3] | 8,381,000 | 0 | [2] | |||||||
| Long-term debt, carrying value | 7,489,448,000 | 4,787,381,000 | [2] | ||||||||
| WES Operating [Member] | Finance Lease Liability [Member] | |||||||||||
| Debt Instrument [Line Items] | |||||||||||
| Principal | 8,381,000 | 0 | |||||||||
| Short-term debt, carrying value | 8,381,000 | 0 | |||||||||
| WES Operating [Member] | Finance Lease Liability [Member] | Valuation, Market Approach [Member] | Level 2 Inputs [Member] | |||||||||||
| Debt Instrument [Line Items] | |||||||||||
| Short-term debt, fair value | 8,381,000 | 0 | |||||||||
| WES Operating [Member] | RCF [Member] | Revolving Credit Facility [Member] | |||||||||||
| Debt Instrument [Line Items] | |||||||||||
| Principal | 920,000,000 | 220,000,000 | |||||||||
| Long-term debt, carrying value | 920,000,000 | 220,000,000 | |||||||||
| WES Operating [Member] | RCF [Member] | Revolving Credit Facility [Member] | Valuation, Market Approach [Member] | Level 2 Inputs [Member] | |||||||||||
| Debt Instrument [Line Items] | |||||||||||
| Long-term debt, fair value | 920,000,000 | 220,000,000 | |||||||||
| WES Operating [Member] | Term Loan Facility [Member] | Revolving Credit Facility [Member] | |||||||||||
| Debt Instrument [Line Items] | |||||||||||
| Principal | 2,000,000,000 | 0 | |||||||||
| Long-term debt, carrying value | 2,000,000,000 | 0 | |||||||||
| WES Operating [Member] | Term Loan Facility [Member] | Revolving Credit Facility [Member] | Valuation, Market Approach [Member] | Level 2 Inputs [Member] | |||||||||||
| Debt Instrument [Line Items] | |||||||||||
| Long-term debt, fair value | 2,000,000,000 | 0 | |||||||||
| WES Operating [Member] | APCWH Note Payable [Member] | |||||||||||
| Debt Instrument [Line Items] | |||||||||||
| Senior note, interest rate | 2.83% | ||||||||||
| Principal | 0 | 427,493,000 | |||||||||
| Long-term debt, carrying value | 0 | 427,493,000 | |||||||||
| WES Operating [Member] | APCWH Note Payable [Member] | Valuation, Market Approach [Member] | Level 2 Inputs [Member] | |||||||||||
| Debt Instrument [Line Items] | |||||||||||
| Long-term debt, fair value | $ 0 | 427,493,000 | |||||||||
| WES Operating [Member] | Senior Notes [Member] | 5.375% Senior Notes due 2021 [Member] | |||||||||||
| Debt Instrument [Line Items] | |||||||||||
| Senior note, interest rate | 5.375% | ||||||||||
| Principal | $ 500,000,000 | 500,000,000 | |||||||||
| Long-term debt, carrying value | 497,556,000 | 496,959,000 | |||||||||
| WES Operating [Member] | Senior Notes [Member] | 5.375% Senior Notes due 2021 [Member] | Valuation, Market Approach [Member] | Level 2 Inputs [Member] | |||||||||||
| Debt Instrument [Line Items] | |||||||||||
| Long-term debt, fair value | $ 520,144,000 | 515,990,000 | |||||||||
| WES Operating [Member] | Senior Notes [Member] | 4.000% Senior Notes due 2022 [Member] | |||||||||||
| Debt Instrument [Line Items] | |||||||||||
| Senior note, interest rate | 4.00% | ||||||||||
| Principal | $ 670,000,000 | 670,000,000 | |||||||||
| Long-term debt, carrying value | 669,198,000 | 669,078,000 | |||||||||
| WES Operating [Member] | Senior Notes [Member] | 4.000% Senior Notes due 2022 [Member] | Valuation, Market Approach [Member] | Level 2 Inputs [Member] | |||||||||||
| Debt Instrument [Line Items] | |||||||||||
| Long-term debt, fair value | $ 679,819,000 | 662,109,000 | |||||||||
| WES Operating [Member] | Senior Notes [Member] | 3.950% Senior Notes due 2025 [Member] | |||||||||||
| Debt Instrument [Line Items] | |||||||||||
| Senior note, interest rate | 3.95% | ||||||||||
| Principal | $ 500,000,000 | 500,000,000 | |||||||||
| Long-term debt, carrying value | 493,329,000 | 492,837,000 | |||||||||
| WES Operating [Member] | Senior Notes [Member] | 3.950% Senior Notes due 2025 [Member] | Valuation, Market Approach [Member] | Level 2 Inputs [Member] | |||||||||||
| Debt Instrument [Line Items] | |||||||||||
| Long-term debt, fair value | $ 496,725,000 | 466,135,000 | |||||||||
| WES Operating [Member] | Senior Notes [Member] | 4.650% Senior Notes due 2026 [Member] | |||||||||||
| Debt Instrument [Line Items] | |||||||||||
| Senior note, interest rate | 4.65% | ||||||||||
| Principal | $ 500,000,000 | 500,000,000 | |||||||||
| Long-term debt, carrying value | 495,951,000 | 495,710,000 | |||||||||
| 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 | $ 507,915,000 | 483,994,000 | |||||||||
| WES Operating [Member] | Senior Notes [Member] | 4.500% Senior Notes due 2028 [Member] | |||||||||||
| Debt Instrument [Line Items] | |||||||||||
| Senior note, interest rate | 4.50% | ||||||||||
| Principal | $ 400,000,000 | 400,000,000 | |||||||||
| Long-term debt, carrying value | 394,869,000 | 394,631,000 | |||||||||
| 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 | $ 400,317,000 | 377,475,000 | |||||||||
| WES Operating [Member] | Senior Notes [Member] | 4.750% Senior Notes due 2028 [Member] | |||||||||||
| Debt Instrument [Line Items] | |||||||||||
| Senior note, interest rate | 4.75% | ||||||||||
| Principal | $ 400,000,000 | 400,000,000 | |||||||||
| Long-term debt, carrying value | 396,014,000 | 395,841,000 | |||||||||
| 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 | $ 407,229,000 | 384,370,000 | |||||||||
| WES Operating [Member] | Senior Notes [Member] | 5.450% Senior Notes due 2044 [Member] | |||||||||||
| Debt Instrument [Line Items] | |||||||||||
| Senior note, interest rate | 5.45% | ||||||||||
| Principal | $ 600,000,000 | 600,000,000 | |||||||||
| Long-term debt, carrying value | 593,408,000 | 593,349,000 | |||||||||
| 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 | $ 565,879,000 | 522,386,000 | |||||||||
| WES Operating [Member] | Senior Notes [Member] | 5.300% Senior Notes due 2048 [Member] | |||||||||||
| Debt Instrument [Line Items] | |||||||||||
| Senior note, interest rate | 5.30% | ||||||||||
| Principal | $ 700,000,000 | 700,000,000 | |||||||||
| Long-term debt, carrying value | 686,744,000 | 686,648,000 | |||||||||
| 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 | $ 650,938,000 | 605,327,000 | |||||||||
| WES Operating [Member] | Senior Notes [Member] | 5.500% Senior Notes due 2048 [Member] | |||||||||||
| Debt Instrument [Line Items] | |||||||||||
| Senior note, interest rate | 5.50% | ||||||||||
| Principal | $ 350,000,000 | 350,000,000 | |||||||||
| Long-term debt, carrying value | 342,379,000 | 342,328,000 | |||||||||
| 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 | $ 335,567,000 | $ 311,536,000 | |||||||||
| |||||||||||
Debt and Interest Expense - Debt Activity Table (Details) - USD ($) |
3 Months Ended | 6 Months Ended |
|---|---|---|
Mar. 31, 2019 |
Jun. 30, 2019 |
|
| Changes in Debt Outstanding [Roll Forward] | ||
| Beginning balance | $ 5,242,874,000 | $ 5,242,874,000 |
| Other | 3,169,000 | |
| Ending balance | 7,497,829,000 | |
| WES Operating [Member] | RCF [Member] | Revolving Credit Facility [Member] | ||
| Changes in Debt Outstanding [Roll Forward] | ||
| Facility borrowings | 700,000,000 | |
| WES Operating [Member] | Term Loan Facility [Member] | Revolving Credit Facility [Member] | ||
| Changes in Debt Outstanding [Roll Forward] | ||
| Facility borrowings | 2,000,000,000 | |
| WES Operating [Member] | Finance Lease Liability [Member] | ||
| Changes in Debt Outstanding [Roll Forward] | ||
| Finance lease liabilities | 8,381,000 | |
| WES Operating [Member] | APCWH Note Payable [Member] | ||
| Changes in Debt Outstanding [Roll Forward] | ||
| APCWH Note Payable borrowings | 11,000,000 | |
| Repayment of APCWH Note Payable | (439,595,000) | |
| WES [Member] | WGP RCF [Member] | Revolving Credit Facility [Member] | ||
| Changes in Debt Outstanding [Roll Forward] | ||
| Repayments of facility borrowings | $ (28,000,000.0) | $ (28,000,000) |
Debt and Interest Expense - Interest-Rate Swap Table (Details) - WES Operating [Member] - Not Designated as Hedging Instrument [Member] - USD ($) |
6 Months Ended | ||
|---|---|---|---|
Jun. 30, 2019 |
Mar. 31, 2019 |
Dec. 31, 2018 |
|
| Derivative [Line Items] | |||
| Interest-rate swap, notional amount | $ 375,000,000.0 | $ 750,000,000.0 | |
| Interest-Rate Swap 1 [Member] | |||
| Derivative [Line Items] | |||
| Interest-rate swap, notional amount | $ 375,000,000.0 | ||
| Interest-rate swap, reference period start date | Dec. 31, 2019 | ||
| Interest-rate swap, reference period end date | Dec. 31, 2024 | ||
| Interest-rate swap, maturity date | Dec. 31, 2019 | ||
| Interest-rate swap, fixed interest rate | 2.662% | ||
| Interest-Rate Swap 2 [Member] | |||
| Derivative [Line Items] | |||
| Interest-rate swap, notional amount | $ 375,000,000.0 | ||
| Interest-rate swap, reference period start date | Dec. 31, 2019 | ||
| Interest-rate swap, reference period end date | Dec. 31, 2029 | ||
| Interest-rate swap, maturity date | Dec. 31, 2019 | ||
| Interest-rate swap, fixed interest rate | 2.802% | ||
| Interest-Rate Swap 3 [Member] | |||
| Derivative [Line Items] | |||
| Interest-rate swap, notional amount | $ 375,000,000.0 | ||
| Interest-rate swap, reference period start date | Dec. 31, 2019 | ||
| Interest-rate swap, reference period end date | Dec. 31, 2049 | ||
| Interest-rate swap, maturity date | Dec. 31, 2019 | ||
| Interest-rate swap, fixed interest rate | 2.885% |
Debt and Interest Expense - Interest Expense Table (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
|||||||
| Debt Instrument [Line Items] | ||||||||||
| Finance lease liabilities | $ (20) | $ (20) | ||||||||
| Interest expense | [1] | (79,472) | $ (42,245) | [2] | (145,348) | $ (80,260) | [2] | |||
| Third Parties [Member] | ||||||||||
| Debt Instrument [Line Items] | ||||||||||
| Long-term and short-term debt | (82,624) | (48,671) | (149,720) | (90,207) | ||||||
| Amortization of debt issuance costs and commitment fees | (3,170) | (2,037) | (6,322) | (4,901) | ||||||
| Capitalized interest | 6,342 | 9,872 | 12,547 | 16,834 | ||||||
| Interest expense | (79,452) | (40,836) | (143,495) | (78,274) | ||||||
| Affiliates [Member] | ||||||||||
| Debt Instrument [Line Items] | ||||||||||
| APCWH Note Payable | 0 | (1,409) | (1,833) | (1,986) | ||||||
| Finance lease liabilities | (20) | 0 | (20) | 0 | ||||||
| Interest expense | $ (20) | $ (1,409) | $ (1,853) | $ (1,986) | ||||||
| ||||||||||
Debt and Interest Expense - Additional Information (Details) - USD ($) |
3 Months Ended | 6 Months Ended | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2019 |
Mar. 31, 2019 |
Jun. 30, 2019 |
Jun. 30, 2018 |
Jul. 01, 2019 |
Feb. 28, 2019 |
Dec. 31, 2018 |
Dec. 19, 2018 |
Feb. 16, 2018 |
Jun. 30, 2017 |
||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||||
| APCWH Note Payable, maximum borrowing | [1] | $ 0 | $ 0 | $ 427,493,000 | [2] | ||||||||||||||
| Gain (loss) on interest-rate swaps | (94,585,000) | $ 0 | [2] | ||||||||||||||||
| WES [Member] | Revolving Credit Facility [Member] | WGP RCF [Member] | |||||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||||
| Facility, maximum borrowing capacity | $ 35,000,000.0 | ||||||||||||||||||
| Facility, Repayment of borrowings | $ 28,000,000.0 | 28,000,000 | |||||||||||||||||
| WES Operating [Member] | |||||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||||
| APCWH Note Payable, maximum borrowing | [3] | 0 | 0 | 427,493,000 | [2] | ||||||||||||||
| Gain (loss) on interest-rate swaps | (94,585,000) | $ 0 | [2] | ||||||||||||||||
| WES Operating [Member] | Interest-Rate Swap [Member] | |||||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||||
| Gain (loss) on interest-rate swaps | 59,000,000.0 | 94,600,000 | |||||||||||||||||
| WES Operating [Member] | Not Designated as Hedging Instrument [Member] | |||||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||||
| Interest-rate swap, notional amount | $ 375,000,000.0 | 750,000,000.0 | |||||||||||||||||
| WES Operating [Member] | Not Designated as Hedging Instrument [Member] | Interest-Rate Swap [Member] | |||||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||||
| Interest-rate swap, collateral posted if credit risk related provision triggered | 44,000,000.0 | 44,000,000.0 | |||||||||||||||||
| Interest-rate swap, aggregate fair value of swaps with credit risk related features for which a net liability position existed | 82,300,000 | 82,300,000 | 5,700,000 | ||||||||||||||||
| WES Operating [Member] | Not Designated as Hedging Instrument [Member] | Interest-Rate Swap [Member] | Accrued Liabilities [Member] | |||||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||||
| Interest-rate swap, liability fair value | 102,600,000 | $ 102,600,000 | $ 8,000,000.0 | ||||||||||||||||
| WES Operating [Member] | APCWH Note Payable [Member] | |||||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||||
| APCWH Note Payable, interest rate | 2.83% | ||||||||||||||||||
| WES Operating [Member] | APCWH Note Payable [Member] | Maximum [Member] | |||||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||||
| APCWH Note Payable, maximum borrowing | $ 500,000,000.0 | ||||||||||||||||||
| WES Operating [Member] | Revolving Credit Facility [Member] | RCF [Member] | |||||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||||
| Facility, maximum borrowing capacity | $ 2,000,000,000.0 | $ 1,500,000,000 | |||||||||||||||||
| Facility, accordion feature amount | 500,000,000 | ||||||||||||||||||
| Facility, expandable maximum borrowing capacity | $ 2,500,000,000 | ||||||||||||||||||
| Facility, fee rate | 0.20% | 0.20% | |||||||||||||||||
| Facility, outstanding borrowings | 920,000,000.0 | $ 920,000,000.0 | |||||||||||||||||
| Facility, available borrowing capacity | $ 1,100,000,000 | $ 1,100,000,000 | |||||||||||||||||
| Facility, interest rate at period end | 3.71% | 3.71% | 3.39% | ||||||||||||||||
| Facility, outstanding letters of credit | $ 4,600,000 | $ 4,600,000 | |||||||||||||||||
| WES Operating [Member] | Revolving Credit Facility [Member] | RCF [Member] | Minimum [Member] | |||||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||||
| Facility, fee rate | 0.125% | ||||||||||||||||||
| WES Operating [Member] | Revolving Credit Facility [Member] | RCF [Member] | Maximum [Member] | |||||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||||
| Facility, fee rate | 0.25% | ||||||||||||||||||
| WES Operating [Member] | Revolving Credit Facility [Member] | RCF [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] | |||||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||||
| Facility, applicable margin added | 1.00% | ||||||||||||||||||
| WES Operating [Member] | Revolving Credit Facility [Member] | RCF [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] | |||||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||||
| Facility, applicable margin added | 1.50% | ||||||||||||||||||
| WES Operating [Member] | Revolving Credit Facility [Member] | RCF [Member] | London Interbank Offered Rate (LIBOR) [Member] | Alternate Base Rate [Member] | |||||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||||
| Facility, applicable margin added | 1.00% | ||||||||||||||||||
| WES Operating [Member] | Revolving Credit Facility [Member] | RCF [Member] | Percentage Above Federal Funds Effective Rate [Member] | Alternate Base Rate [Member] | |||||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||||
| Facility, applicable margin added | 0.50% | ||||||||||||||||||
| WES Operating [Member] | Revolving Credit Facility [Member] | RCF [Member] | Base Rate [Member] | Minimum [Member] | |||||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||||
| Facility, applicable margin added | 0.00% | ||||||||||||||||||
| WES Operating [Member] | Revolving Credit Facility [Member] | RCF [Member] | Base Rate [Member] | Maximum [Member] | |||||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||||
| Facility, applicable margin added | 0.50% | ||||||||||||||||||
| WES Operating [Member] | Revolving Credit Facility [Member] | Term Loan Facility [Member] | |||||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||||
| Facility, maximum borrowing capacity | $ 2,000,000,000.0 | ||||||||||||||||||
| Facility, outstanding borrowings | $ 2,000,000,000.0 | $ 2,000,000,000.0 | |||||||||||||||||
| Facility, interest rate at period end | 3.78% | 3.78% | |||||||||||||||||
| WES Operating [Member] | Revolving Credit Facility [Member] | Term Loan Facility [Member] | Subsequent Event [Member] | |||||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||||
| Facility, maximum borrowing capacity | $ 3,000,000,000.0 | ||||||||||||||||||
| Facility, incremental capacity with provision carve out | $ 1,000,000,000.0 | ||||||||||||||||||
| WES Operating [Member] | Revolving Credit Facility [Member] | Term Loan Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] | |||||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||||
| Facility, applicable margin added | 1.00% | ||||||||||||||||||
| WES Operating [Member] | Revolving Credit Facility [Member] | Term Loan Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] | |||||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||||
| Facility, applicable margin added | 1.625% | ||||||||||||||||||
| WES Operating [Member] | Revolving Credit Facility [Member] | Term Loan Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Alternate Base Rate [Member] | |||||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||||
| Facility, applicable margin added | 1.00% | ||||||||||||||||||
| WES Operating [Member] | Revolving Credit Facility [Member] | Term Loan Facility [Member] | Percentage Above Federal Funds Effective Rate [Member] | Alternate Base Rate [Member] | |||||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||||
| Facility, applicable margin added | 0.50% | ||||||||||||||||||
| WES Operating [Member] | Revolving Credit Facility [Member] | Term Loan Facility [Member] | Base Rate [Member] | Minimum [Member] | |||||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||||
| Facility, applicable margin added | 0.00% | ||||||||||||||||||
| WES Operating [Member] | Revolving Credit Facility [Member] | Term Loan Facility [Member] | Base Rate [Member] | Maximum [Member] | |||||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||||
| Facility, applicable margin added | 0.625% | ||||||||||||||||||
| |||||||||||||||||||
Leases - Summary of Leases Table (Details) $ in Thousands |
6 Months Ended |
|---|---|
|
Jun. 30, 2019
USD ($)
| |
| Leases [Abstract] | |
| Operating leases - Other assets | $ 6,923 |
| Finance leases - Net property, plant and equipment | 8,374 |
| Operating leases - Accrued liabilities | 4,515 |
| Finance leases - Short-term debt | 8,381 |
| Operating leases - Other liabilities | 3,302 |
| Total lease liabilities - operating leases | $ 7,817 |
| Weighted-average remaining lease term (years) - operating leases | 4 years |
| Weighted-average remaining lease term (years) - finance leases | 1 year |
| Weighted-average discount rate - operating leases | 4.60% |
| Weighted-average discount rate - finance leases | 2.90% |
| Additions to ROU assets and lease liabilities - finance leases | $ 8,500 |
Leases - Summary of Lease Cost Table (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
|
| Leases [Abstract] | ||||
| Operating lease cost | $ 1,923 | $ 3,837 | ||
| Variable lease cost | 102 | 119 | ||
| Sublease income | (103) | (207) | ||
| Amortization of ROU assets | 80 | 80 | ||
| Interest on lease liabilities | 20 | 20 | ||
| Total lease cost | $ 2,022 | $ 12,900 | $ 3,849 | $ 26,700 |
Leases - Cash Flow Activity Related to Leases Table (Details) $ in Thousands |
6 Months Ended |
|---|---|
|
Jun. 30, 2019
USD ($)
| |
| Operating Cash Flows | |
| Operating leases | $ 3,929 |
Leases - Reconciliation of Operating and Finance Lease Liabilities Table (Details) - USD ($) $ in Thousands |
Jun. 30, 2019 |
Dec. 31, 2018 |
|---|---|---|
| Operating Leases | ||
| Remainder of 2019 | $ 3,114 | |
| 2019 | $ 8,711 | |
| 2020 | 1,969 | 2,236 |
| 2021 | 612 | 460 |
| 2022 | 618 | 467 |
| 2023 | 625 | 473 |
| Thereafter | 1,658 | 1,547 |
| Total lease payments | 8,596 | $ 13,894 |
| Less portion representing imputed interest | 779 | |
| Total lease liabilities | 7,817 | |
| Finance Leases | ||
| Remainder of 2019 | 625 | |
| 2020 | 7,934 | |
| 2021 | 0 | |
| 2022 | 0 | |
| 2023 | 0 | |
| Thereafter | 0 | |
| Total lease payments | 8,559 | |
| Less portion representing imputed interest | 178 | |
| Total lease liabilities | $ 8,381 |
Leases - Additional Information (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
|
| Leases [Abstract] | ||||
| Total lease cost | $ 2,022 | $ 12,900 | $ 3,849 | $ 26,700 |