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v3.25.3

Variable Interest Entities (Details) - USD ($) $ in Millions | 9 Months Ended |  |  |
--- | --- | --- | --- | ---
Sep. 30, 2025 | Dec. 31, 2024 | Sep. 30, 2024 | Dec. 31, 2023
Variable Interest Entity [Line Items] |  |  |  |
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation | $ 70 | $ 60 | $ 762 | $ 2,150
Receivables, Net, Current | 1,480 | 1,863 |  |
Inventory, Net | 339 | 279 |  |
Other current assets and deferred charges | 225 | 192 |  |
Property, Plant and Equipment, Net | 40,385 | 38,692 |  |
Intangible assets – net | 7,004 | 7,209 |  |
Other Assets, Noncurrent | 1,888 | 1,830 |  |
Accounts payable | (1,406) | (1,613) |  |
Other current liabilities | (1,472) | (1,360) |  |
Other Liabilities and Deferred Revenue, Noncurrent | (5,084) | (5,268) |  |
Variable Interest Entity, Primary Beneficiary [Member] |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation | 37 | 15 |  |
Receivables, Net, Current | 172 | 178 |  |
Inventory, Net | 6 | 5 |  |
Other current assets and deferred charges | 5 | 7 |  |
Property, Plant and Equipment, Net | 4,813 | 4,896 |  |
Intangible assets – net | 1,858 | 1,940 |  |
Other Assets, Noncurrent | 23 | 27 |  |
Accounts payable | (68) | (57) |  |
Other current liabilities | (25) | (29) |  |
Other Liabilities and Deferred Revenue, Noncurrent | $ (264) | $ (263) |  |
Variable Interest Entity, Primary Beneficiary [Member] | Williams Companies Inc [Member] | Northeast JV [Member] |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Variable Interest Entity Ownership Percentage | 65.00% |  |  |
Variable Interest Entity, Primary Beneficiary [Member] | Williams Companies Inc [Member] | Gulfstar One [Member] |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Variable Interest Entity Ownership Percentage | 51.00% |  |  |
Variable Interest Entity, Primary Beneficiary [Member] | Williams Companies Inc [Member] | Cardinal Gas Services LLC [Member] |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Variable Interest Entity Ownership Percentage | 66.00% |  |  |
Variable Interest Entity, Not Primary Beneficiary [Member] | Williams Companies Inc [Member] |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Equity-method investments | $ 216 |  |  |

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