Acquisitions (Details) - USD ($) $ in Millions | | | | 1 Months Ended | 3 Months Ended | 6 Months Ended | 11 Months Ended | 12 Months Ended | |
Jan. 03, 2024 | Nov. 30, 2023 | Feb. 14, 2023 | Dec. 31, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023 | Dec. 31, 2023 | Dec. 31, 2022 |
Business Acquisition [Line Items] | | | | | | | | | | | | | |
Payments to Acquire Businesses, Net of Cash Acquired | | | | | | | | $ 1,844 | | $ 1,053 | | | |
Revenues | | | | | | $ 2,336 | $ 2,483 | 5,107 | | 5,564 | | | |
Modified EBITDA Earnings Loss | | | | | | 1,528 | 1,667 | 3,365 | | 3,797 | | | |
Net income (loss) attributable to The Williams Companies, Inc. | | | | | | 401 | 460 | 1,033 | | 1,387 | | | |
Pro Forma [Member] | | | | | | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | | | | | | |
Business Acquisition, Pro Forma Revenue | | | | | | | 2,608 | | | 5,834 | | | |
Business Acquisition, Pro Forma Net Income (Loss) | | | | | | | 484 | | | 1,436 | | | |
Operating Segments [Member] | | | | | | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | | | | | | |
Modified EBITDA Earnings Loss | | | | | | 1,481 | 1,626 | 3,242 | | 3,682 | | | |
Transmission And Gulf Of Mexico [Member] | Operating Segments [Member] | | | | | | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | | | | | | |
Revenues | | | | | | 1,068 | 1,042 | 2,187 | | 2,049 | | | |
Modified EBITDA Earnings Loss | | | | | | 808 | 731 | 1,637 | | 1,446 | | | |
West [Member] | Operating Segments [Member] | | | | | | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | | | | | | |
Revenues | | | | | | 621 | 500 | 1,322 | | 1,003 | | | |
Modified EBITDA Earnings Loss | | | | | | $ 318 | 312 | 645 | | 616 | | | |
Gulf Coast Storage Acquisition | | | | | | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | | | | | | |
Business Acquisition, Percentage of Voting Interests Acquired | | 100% | | | | | | | | | | | |
Business Combination, Consideration Transferred | | $ 1,950 | | | | | | | | | | | |
Business Combination, Consideration Transferred, Liabilities Incurred | | 100 | | | | | | | | | | | |
Gulf Coast Storage Acquisition | Pro Forma [Member] | | | | | | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | | | | | | |
Business Acquisition, Pro Forma Revenue | | | | | | | 48 | | | 94 | | | |
Business Acquisition, Pro Forma Net Income (Loss) | | | | | | | 19 | | | 35 | | | |
Gulf Coast Storage Acquisition | Transmission And Gulf Of Mexico [Member] | | | | | | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents | | 46 | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other | | 18 | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment | | 2,035 | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets | | 2 | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets | | 2,101 | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other | | (11) | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other | | (107) | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities | | (118) | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net | | $ 1,983 | | | | | | | | | | | |
Gulf Coast Storage Acquisition | Transmission And Gulf Of Mexico [Member] | Selling, general and administrative expenses [Member] | | | | | | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | | | | | | |
Business Combination Acquisition Related Costs Cumulative | | | | | | | | 14 | | | | | |
Business Combination, Acquisition Related Costs | | | | | | | | 13 | | | | | |
Gulf Coast Storage Acquisition | Transmission And Gulf Of Mexico [Member] | Operating Segments [Member] | | | | | | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | | | | | | |
Revenues | | | | | | | | | $ 112 | | | | |
Modified EBITDA Earnings Loss | | | | | | | | | $ 81 | | | | |
Cureton Acquisition | | | | | | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | | | | | | |
Business Acquisition, Percentage of Voting Interests Acquired | | | 100% | | | | | | | | | | |
Business Combination, Consideration Transferred | | | $ 546 | | | | | | | | | | |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life | | | 20 years | | | | | | | | | | |
Percentage Of Finite Lived Intangible Assets Impacted By Our Intent Or Ability To Renew Or Extend Arrangement | | | 24% | | | | | | | | | | |
Acquired Finite-lived Intangible Asset, Weighted-Average Period before Renewal or Extension | | | 10 years | | | | | | | | | | |
Cureton Acquisition | West [Member] | | | | | | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents | | | $ 6 | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other | | | 21 | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment | | | 435 | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | | | 117 | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets | | | 1 | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets | | | 580 | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other | | | (29) | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other | | | (14) | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities | | | (43) | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net | | | 537 | | | | | | | | | | |
Goodwill | | | 9 | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net | | | 546 | | | | | | | | | | |
Cureton Acquisition | West [Member] | Selling, general and administrative expenses [Member] | | | | | | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | | | | | | |
Business Combination Acquisition Related Costs Cumulative | | | | | | | | 7 | | | | | |
Business Combination, Acquisition Related Costs | | | | | | | | 1 | | | | | |
Cureton Acquisition | West [Member] | Operating Segments [Member] | | | | | | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | | | | | | |
Revenues | | | | | $ 35 | | | | | | | | |
Modified EBITDA Earnings Loss | | | | | 7 | | | | | | | | |
RMM Acquisition | | | | | | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | | | | | | |
Business Combination, Consideration Transferred | | | 704 | | | | | | | | | | |
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value | | | 406 | | | | | | | | | | |
Gain on remeasurement of equity-method investment (Note 2) | | | $ 30 | | | | | | | | | | |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life | | | 20 years | | | | | | | | | | |
Percentage Of Finite Lived Intangible Assets Impacted By Our Intent Or Ability To Renew Or Extend Arrangement | | | 18% | | | | | | | | | | |
Acquired Finite-lived Intangible Asset, Weighted-Average Period before Renewal or Extension | | | 10 years | | | | | | | | | | |
RMM Acquisition | West [Member] | | | | | | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents | | | $ 28 | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other | | | 4 | | | | | | | | | | |
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Investments | | | 20 | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment | | | 1,041 | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | | | 63 | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets | | | 12 | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets | | | 1,168 | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other | | | (44) | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other | | | (103) | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities | | | (147) | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net | | | 1,021 | | | | | | | | | | |
Goodwill | | | 55 | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net | | | 1,076 | | | | | | | | | | |
Business Acquisition, Goodwill, Expected Tax Deductible Amount | | | $ 55 | | | | | | | | | | |
RMM Acquisition | West [Member] | Rocky Mountain Midstream Holdings LLC [Member] | | | | | | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | | | | | | |
Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage | | | | | | | | | | | | | 50% |
Business Acquisition, Percentage of Voting Interests Acquired | | | 50% | | | | | | | | | | |
RMM Acquisition | West [Member] | Operating Segments [Member] | | | | | | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | | | | | | |
Revenues | | | | | 53 | | | | | | | | |
Modified EBITDA Earnings Loss | | | | | $ 12 | | | | | | | | |
DJ Basin Acquisitions | Pro Forma [Member] | | | | | | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | | | | | | |
Business Acquisition, Pro Forma Revenue | | | | | | | 77 | | | 141 | | | |
Business Acquisition, Pro Forma Net Income (Loss) | | | | | | | $ 5 | | | 8 | | | |
MountainWest Acquisition | | | | | | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | | | | | | |
Business Acquisition, Percentage of Voting Interests Acquired | | | | 100% | | | | | | | | | |
Business Combination, Consideration Transferred | | | | $ 1,080 | | | | | | | | | |
Business Combination, Consideration Transferred, Liabilities Incurred | | | | 430 | | | | | | | | | |
Payments to Acquire Businesses, Net of Cash Acquired | | | | | | | | | | | | $ 1,024 | |
MountainWest Acquisition | Pro Forma [Member] | | | | | | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | | | | | | |
Business Acquisition, Pro Forma Revenue | [1] | | | | | | | | | 35 | | | |
Business Acquisition, Pro Forma Net Income (Loss) | [1] | | | | | | | | | 6 | | | |
MountainWest Acquisition | Transmission And Gulf Of Mexico [Member] | | | | | | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | | | | | | |
Business Combination, Transition Related Costs | | | | | | | | | | | $ 27 | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents | | | | 23 | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables | | | | 33 | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other | | | | 26 | | | | | | | | | |
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Investments | | | | 20 | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment | | | | 1,019 | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets | | | | 33 | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets | | | | 1,154 | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other | | | | (47) | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-Term Debt | | | | (365) | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other | | | | (95) | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities | | | | (507) | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net | | | | 647 | | | | | | | | | |
Goodwill | | | | 400 | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net | | | | 1,047 | | | | | | | | | |
Business Acquisition, Goodwill, Expected Tax Deductible Amount | | | | $ 400 | | | | | | | | | |
MountainWest Acquisition | Transmission And Gulf Of Mexico [Member] | Selling, general and administrative expenses [Member] | | | | | | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | | | | | | |
Business Combination Acquisition Related Costs Cumulative | | | | | | | | $ 17 | | | | | |
Business Combination, Acquisition Related Costs | | | | | | | | | | $ 13 | | | |
MountainWest Acquisition | Transmission And Gulf Of Mexico [Member] | Operating Segments [Member] | | | | | | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | | | | | | |
Revenues | | | | | | | | | | | 225 | | |
Modified EBITDA Earnings Loss | | | | | | | | | | | $ 122 | | |
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[1] Excludes results from operations acquired in the acquisition for the period beginning on the acquisition date, as these results are included in the amounts as reported. | |