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Subsequent Events | 9 Months Ended
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Sep. 30, 2025
Subsequent Events [Abstract] |
Subsequent Events [Text Block] | Note 12 – Subsequent Events Sale of South Mansfield Upstream Interests In October 2025, Williams entered into an agreement to sell its interests in certain upstream ventures in the South Mansfield area of the Haynesville Shale region, included in Other, for consideration of $398 million with additional contingent consideration to possibly be received through 2029. Upon closing, Williams expects to record a gain in the fourth quarter of 2025. The results of operations for this disposal group were not significant for the reporting periods. Louisiana LNG and Driftwood Pipeline In October 2025, Williams closed on various agreements with the same counterparty to acquire a 10 percent equity-method interest in Louisiana LNG LLC, which is developing a fully permitted LNG export facility, and an 80 percent interest in Driftwood Pipeline LLC, which is constructing a fully permitted greenfield pipeline connecting to multiple other pipelines, including Transco and Louisiana Energy Gateway, to supply the LNG facility. Williams will be the operator of the pipeline. The total initial purchase price was $378 million, and both investments will require additional capital to fund further construction. The Louisiana LNG LLC and Driftwood Pipeline LLC purchases were funded with available liquidity. Williams will also manage the gas supply for the LNG facility and purchase a portion of the LNG produced.

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- Definition The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 855 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/855/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 855 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483399/855-10-50-2 + Details
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