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Investing Activities
 12 Months Ended
Dec. 31, 2024
Investments [Abstract]  
Investing Activities [Text Block]
Note 8 – Investing Activities
Equity-Method Investments
 
Ownership Interest at December 31, 2024
December 31,
 20242023
 (Millions)
Appalachia Midstream Investments(1)$2,810 $2,886 
OPPL50%385 387 
Blue Racer50%366 398 
Gulfstream50%196 210 
Laurel Mountain69%171 184 
Discovery (2)
100%— 361 
OtherVarious179 188 
$4,107 $4,614 
___________
(1)Includes equity-method investments in multiple gathering systems in the Marcellus Shale region with an approximate average 66 percent interest.
(2)Discovery is a wholly owned subsidiary of Williams as of August 1, 2024. See Note 3 – Acquisitions and Divestitures.
Basis differential
The carrying value of Appalachia Midstream Investments exceeds Williams’ portion of the underlying net assets by approximately $1 billion and $1.1 billion at December 31, 2024 and 2023, respectively. These differences were assigned at the acquisition date to property, plant, and equipment and customer relationship intangible assets.
Certain other equity-method investments have a carrying value less than Williams’ portion of the underlying equity in the net assets primarily due to other than temporary impairments that Williams recognized but were not required to be recognized in the investees’ financial statements. These differences total approximately $634 million and $773 million at December 31, 2024 and 2023, respectively, and were assigned to property, plant, and equipment and customer relationship intangible assets. Differences in the carrying value of Williams’ equity-method investments and its portion of the equity in the underlying net assets are generally amortized over the remaining
useful lives of the associated underlying assets and included in Equity earnings (losses) within Williams’ Consolidated Statement of Income.
Purchases of and contributions to equity-method investments
Williams generally funds its portion of significant expansion or development projects of these investees through additional capital contributions. These transactions increased the carrying value of Williams’ investments and included:
Year Ended December 31,
 202420232022
 (Millions)
Appalachia Midstream Investments$74 $59 $83 
Discovery37 40 41 
OPPL
2 1 — 
Aux Sable Liquid Products LP
1 38 — 
Cardinal Pipeline Company, LLC— — 16 
Gulfstream— — 14 
Other— 3 12 
$114 $141 $166 
Dividends and distributions
The organizational documents of entities in which Williams has an equity-method investment generally require distribution of available cash to members on at least a quarterly basis. These transactions reduced the carrying value of its investments and included:
Year Ended December 31,
202420232022
 (Millions)
Appalachia Midstream Investments$407 $405 $415 
Gulfstream103 98 89 
Blue Racer
95 62 49 
OPPL
90 56 34 
Laurel Mountain
29 42 112 
Discovery22 49 49 
RMM— 49 52 
Other43 35 65 
$789 $796 $865 
Summarized Financial Position and Results of Operations of All Equity-Method Investments
 December 31,
 20242023
 (Millions)
Assets (liabilities):
Current assets
$564 $669 
Noncurrent assets
9,439 11,058 
Current liabilities
(1,146)(358)
Noncurrent liabilities
(2,383)(3,619)
 Year Ended December 31,
 202420232022
 (Millions)
Gross revenue$2,880 $3,714 $5,520 
Operating income1,190 966 1,268 
Net income987 748 1,102 

Sale of Aux Sable Interest
On August 1, 2024, Williams completed the sale of its equity-method investments in Aux Sable Liquid Products Inc., Aux Sable Liquid Products LP, and Aux Sable Midstream LLC (collectively, “Aux Sable”) in Williams’ Northeast G&P segment for total consideration of $161 million. As a result of this sale, Williams recorded a gain of $149 million in the third quarter of 2024. The gain is reflected in Other investing income (loss) – net in Williams’ Consolidated Statement of Income.
Other investing income (loss) – net
The following table presents certain items reflected in Other investing income (loss) – net in Williams’ Consolidated Statement of Income:
Year Ended December 31,
202420232022
(Millions)
Gain on sale of Aux Sable investments
$149 $— $— 
Gain on remeasurement of Discovery investment (Note 3)
127 — — 
Interest income
67 79 15 
Gain on remeasurement of RMM investment (Note 3)
— 30 — 
Other
— (1)1 
$343 $108 $16