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v3.26.1

Segment Disclosures Recon from Segment to Consolidated - Revenues, Modified EBITDA, and Significant Expenses (Details) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2026 USD ($) | Mar. 31, 2026 USD ($) | Dec. 31, 2025 USD ($) | Jun. 30, 2025 USD ($) | Jun. 30, 2026 USD ($) Reportable_segment | Jun. 30, 2025 USD ($)
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | $ 3,053 |  |  | $ 2,781 | $ 6,083 | $ 5,829
Other financial information: |  |  |  |  |  |  |
Proportional Modified EBITDA Equity Method Investments |  | (249) |  |  | (231) | (508) | (467)
Gain on sale of certain assets (Note 3) |  | 12 |  |  | 0 | 194 | 0
Depreciation, Depletion and Amortization |  | (592) |  |  | (605) | (1,176) | (1,190)
Income (Loss) from Equity Method Investments |  | 159 |  |  | 142 | 320 | 297
Other investing income (loss) - net |  | 134 |  |  | 4 | 158 | 12
Interest expense |  | (371) |  |  | (350) | (747) | (699)
Asset Retirement Obligation Accretion Expense For Nonregulated Operations |  | (24) |  |  | (24) | (47) | (48)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest |  | 1,136 |  |  | 757 | $ 2,292 | 1,679
Number of Reportable Segments | Reportable_segment |  |  |  |  |  | 4 |
Energy Related Derivative | Not Designated as Hedging Instrument [Member] | Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization |  |  |  |  |  |  |
Other financial information: |  |  |  |  |  |  |
Unrealized Gain (Loss) on Derivatives |  | 1 |  |  | 12 | $ 1 | 2
Energy Related Derivative | Not Designated as Hedging Instrument [Member] | Income Statement Location [Axis]: us-gaap:Revenues |  |  |  |  |  |  |
Other financial information: |  |  |  |  |  |  |
Unrealized Gain (Loss) on Derivatives |  | 141 |  |  | 24 | (84) | 2
Service [Member] |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 2,152 |  |  | 2,041 | 4,358 | 4,044
NonRegulated Service Commodity Consideration [Member] |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 45 |  |  | 47 | 91 | 96
Product [Member] |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 762 |  |  | 657 | 1,899 | 1,715
Energy Commodities and Service |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 94 |  |  | 36 | (265) | (26)
Other Operating Segment | Certain South Mansfield Upstream Interests |  |  |  |  |  |  |
Other financial information: |  |  |  |  |  |  |
Gain on sale of certain assets (Note 3) |  | 12 | $ 182 |  |  |  |
Operating Segments [Member] | Transmission, Power & Gulf [Member] |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 1,385 |  |  | 1,312 | 2,826 | 2,584
Other financial information: |  |  |  |  |  |  |
Product Costs And Net Realized Processing Commodity Expenses |  | (135) |  |  | (119) | (271) | (242)
Operating And Administrative Expenses | [1] | (300) |  |  | (286) | (582) | (556)
Recovery of Direct Costs | [2] | (53) |  |  | (55) | (125) | (125)
Other Segment Income (Expenses) - Net | [3] | 26 |  |  | 2 | 48 | 15
Proportional Modified EBITDA Equity Method Investments |  | 36 |  |  | 37 | 73 | 73
Modified EBITDA |  | 959 |  |  | 891 | 1,969 | 1,749
Operating Segments [Member] | Transmission, Power & Gulf [Member] | Energy Related Derivative | Not Designated as Hedging Instrument [Member] | Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization |  |  |  |  |  |  |
Other financial information: |  |  |  |  |  |  |
Unrealized Gain (Loss) on Derivatives |  | 0 |  |  | 0 | 0 | 0
Operating Segments [Member] | Transmission, Power & Gulf [Member] | Service [Member] |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 1,237 |  |  | 1,176 | 2,524 | 2,311
Operating Segments [Member] | Transmission, Power & Gulf [Member] | Service [Member] | External Customer |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 1,214 |  |  | 1,150 | 2,476 | 2,263
Operating Segments [Member] | Transmission, Power & Gulf [Member] | Service [Member] | Internal Customer |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 23 |  |  | 26 | 48 | 48
Operating Segments [Member] | Transmission, Power & Gulf [Member] | NonRegulated Service Commodity Consideration [Member] |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 23 |  |  | 28 | 49 | 51
Operating Segments [Member] | Transmission, Power & Gulf [Member] | Product [Member] |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 129 |  |  | 108 | 258 | 223
Operating Segments [Member] | Transmission, Power & Gulf [Member] | Product [Member] | External Customer |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 25 |  |  | 31 | 61 | 57
Operating Segments [Member] | Transmission, Power & Gulf [Member] | Product [Member] | Internal Customer |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 104 |  |  | 77 | 197 | 166
Operating Segments [Member] | Transmission, Power & Gulf [Member] | Energy Commodities and Service |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues | [4] | (4) |  |  | 0 | (5) | (1)
Operating Segments [Member] | Transmission, Power & Gulf [Member] | Energy Commodities and Service | Realized Gain (Loss) |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | (4) |  |  | 0 | (5) | (1)
Operating Segments [Member] | Transmission, Power & Gulf [Member] | Energy Commodities and Service | Unrealized Gain (Loss) |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 0 |  |  | 0 | 0 | 0
Operating Segments [Member] | Northeast G & P [Member] |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 547 |  |  | 541 | 1,090 | 1,096
Other financial information: |  |  |  |  |  |  |
Product Costs And Net Realized Processing Commodity Expenses |  | (18) |  |  | (38) | (57) | (90)
Operating And Administrative Expenses | [1] | (109) |  |  | (113) | (212) | (219)
Recovery of Direct Costs | [2] | (47) |  |  | (41) | (97) | (83)
Other Segment Income (Expenses) - Net | [3] | (1) |  |  | (2) | 4 | (2)
Proportional Modified EBITDA Equity Method Investments |  | 168 |  |  | 154 | 336 | 313
Modified EBITDA |  | 540 |  |  | 501 | 1,064 | 1,015
Operating Segments [Member] | Northeast G & P [Member] | Energy Related Derivative | Not Designated as Hedging Instrument [Member] | Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization |  |  |  |  |  |  |
Other financial information: |  |  |  |  |  |  |
Unrealized Gain (Loss) on Derivatives |  | 0 |  |  | 0 | 0 | 0
Operating Segments [Member] | Northeast G & P [Member] | Service [Member] |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 529 |  |  | 497 | 1,033 | 994
Operating Segments [Member] | Northeast G & P [Member] | Service [Member] | External Customer |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 526 |  |  | 494 | 1,026 | 987
Operating Segments [Member] | Northeast G & P [Member] | Service [Member] | Internal Customer |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 3 |  |  | 3 | 7 | 7
Operating Segments [Member] | Northeast G & P [Member] | NonRegulated Service Commodity Consideration [Member] |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 1 |  |  | 0 | 1 | 1
Operating Segments [Member] | Northeast G & P [Member] | Product [Member] |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 17 |  |  | 44 | 56 | 101
Operating Segments [Member] | Northeast G & P [Member] | Product [Member] | External Customer |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 7 |  |  | 17 | 22 | 35
Operating Segments [Member] | Northeast G & P [Member] | Product [Member] | Internal Customer |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 10 |  |  | 27 | 34 | 66
Operating Segments [Member] | Northeast G & P [Member] | Energy Commodities and Service |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues | [4] | 0 |  |  | 0 | 0 | 0
Operating Segments [Member] | Northeast G & P [Member] | Energy Commodities and Service | Realized Gain (Loss) |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 0 |  |  | 0 | 0 | 0
Operating Segments [Member] | Northeast G & P [Member] | Energy Commodities and Service | Unrealized Gain (Loss) |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 0 |  |  | 0 | 0 | 0
Operating Segments [Member] | West [Member] |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 724 |  |  | 676 | 1,479 | 1,401
Other financial information: |  |  |  |  |  |  |
Product Costs And Net Realized Processing Commodity Expenses |  | (219) |  |  | (201) | (438) | (455)
Operating And Administrative Expenses | [1] | (166) |  |  | (150) | (315) | (302)
Recovery of Direct Costs | [2] | (16) |  |  | (15) | (36) | (29)
Other Segment Income (Expenses) - Net | [3] | 1 |  |  | (1) | 5 | 10
Proportional Modified EBITDA Equity Method Investments |  | 35 |  |  | 32 | 71 | 70
Modified EBITDA |  | 359 |  |  | 341 | 766 | 695
Operating Segments [Member] | West [Member] | Energy Related Derivative | Not Designated as Hedging Instrument [Member] | Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization |  |  |  |  |  |  |
Other financial information: |  |  |  |  |  |  |
Unrealized Gain (Loss) on Derivatives |  | 0 |  |  | 0 | 0 | 0
Operating Segments [Member] | West [Member] | Service [Member] |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 476 |  |  | 446 | 982 | 884
Operating Segments [Member] | West [Member] | Service [Member] | External Customer |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 408 |  |  | 393 | 848 | 786
Operating Segments [Member] | West [Member] | Service [Member] | Internal Customer |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 68 |  |  | 53 | 134 | 98
Operating Segments [Member] | West [Member] | NonRegulated Service Commodity Consideration [Member] |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 21 |  |  | 19 | 41 | 44
Operating Segments [Member] | West [Member] | Product [Member] |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 228 |  |  | 210 | 458 | 474
Operating Segments [Member] | West [Member] | Product [Member] | External Customer |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 30 |  |  | 31 | 71 | 71
Operating Segments [Member] | West [Member] | Product [Member] | Internal Customer |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 198 |  |  | 179 | 387 | 403
Operating Segments [Member] | West [Member] | Energy Commodities and Service |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues | [4] | (1) |  |  | 1 | (2) | (1)
Operating Segments [Member] | West [Member] | Energy Commodities and Service | Realized Gain (Loss) |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | (1) |  |  | 1 | (2) | (1)
Operating Segments [Member] | West [Member] | Energy Commodities and Service | Unrealized Gain (Loss) |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 0 |  |  | 0 | 0 | 0
Operating Segments [Member] | Gas & NGL Marketing Services |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues | [5] | 638 |  |  | 389 | 1,172 | 1,100
Other financial information: |  |  |  |  |  |  |
Product Costs And Net Realized Processing Commodity Expenses |  | (507) |  |  | (421) | (985) | (934)
Operating And Administrative Expenses | [1] | (18) |  |  | (19) | (52) | (58)
Recovery of Direct Costs | [2] | 0 |  |  | 0 | 0 | 0
Other Segment Income (Expenses) - Net | [3] | (1) |  |  | 1 | (1) | 1
Proportional Modified EBITDA Equity Method Investments |  | 10 |  |  | 8 | 28 | 11
Modified EBITDA |  | 123 |  |  | (30) | 163 | 122
Operating Segments [Member] | Gas & NGL Marketing Services | Energy Related Derivative | Not Designated as Hedging Instrument [Member] | Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization |  |  |  |  |  |  |
Other financial information: |  |  |  |  |  |  |
Unrealized Gain (Loss) on Derivatives |  | 1 |  |  | 12 | 1 | 2
Operating Segments [Member] | Gas & NGL Marketing Services | Service [Member] |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues | [5] | 0 |  |  | 0 | 0 | 0
Operating Segments [Member] | Gas & NGL Marketing Services | Service [Member] | External Customer |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues | [5] | 0 |  |  | 0 | 0 | 0
Operating Segments [Member] | Gas & NGL Marketing Services | Service [Member] | Internal Customer |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues | [5] | 0 |  |  | 0 | 0 | 0
Operating Segments [Member] | Gas & NGL Marketing Services | NonRegulated Service Commodity Consideration [Member] |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues | [5] | 0 |  |  | 0 | 0 | 0
Operating Segments [Member] | Gas & NGL Marketing Services | Product [Member] |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues | [5] | 548 |  |  | 403 | 1,401 | 1,142
Operating Segments [Member] | Gas & NGL Marketing Services | Product [Member] | External Customer |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues | [5] | 623 |  |  | 529 | 1,618 | 1,461
Operating Segments [Member] | Gas & NGL Marketing Services | Product [Member] | Internal Customer |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues | [5] | (75) |  |  | (126) | (217) | (319)
Operating Segments [Member] | Gas & NGL Marketing Services | Energy Commodities and Service |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues | [4],[5] | 90 |  |  | (14) | (229) | (42)
Operating Segments [Member] | Gas & NGL Marketing Services | Energy Commodities and Service | Realized Gain (Loss) |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues | [5] | (29) |  |  | 2 | (156) | (33)
Operating Segments [Member] | Gas & NGL Marketing Services | Energy Commodities and Service | Unrealized Gain (Loss) |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues | [5] | 119 |  |  | (16) | (73) | (9)
Operating Segments [Member] | Reportable Segment, Aggregation before Other Operating Segment |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 3,294 |  |  | 2,918 | 6,567 | 6,181
Other financial information: |  |  |  |  |  |  |
Modified EBITDA |  | 1,981 |  |  | 1,703 | 3,962 | 3,581
Operating Segments [Member] | Reportable Segment, Aggregation before Other Operating Segment | Service [Member] |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 2,242 |  |  | 2,119 | 4,539 | 4,189
Operating Segments [Member] | Reportable Segment, Aggregation before Other Operating Segment | Service [Member] | External Customer |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 2,148 |  |  | 2,037 | 4,350 | 4,036
Operating Segments [Member] | Reportable Segment, Aggregation before Other Operating Segment | Service [Member] | Internal Customer |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 94 |  |  | 82 | 189 | 153
Operating Segments [Member] | Reportable Segment, Aggregation before Other Operating Segment | NonRegulated Service Commodity Consideration [Member] |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 45 |  |  | 47 | 91 | 96
Operating Segments [Member] | Reportable Segment, Aggregation before Other Operating Segment | Product [Member] |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 922 |  |  | 765 | 2,173 | 1,940
Operating Segments [Member] | Reportable Segment, Aggregation before Other Operating Segment | Product [Member] | External Customer |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 685 |  |  | 608 | 1,772 | 1,624
Operating Segments [Member] | Reportable Segment, Aggregation before Other Operating Segment | Product [Member] | Internal Customer |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 237 |  |  | 157 | 401 | 316
Operating Segments [Member] | Reportable Segment, Aggregation before Other Operating Segment | Energy Commodities and Service |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues | [4] | 85 |  |  | (13) | (236) | (44)
Operating Segments [Member] | Reportable Segment, Aggregation before Other Operating Segment | Energy Commodities and Service | Realized Gain (Loss) |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | (34) |  |  | 3 | (163) | (35)
Operating Segments [Member] | Reportable Segment, Aggregation before Other Operating Segment | Energy Commodities and Service | Unrealized Gain (Loss) |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 119 |  |  | (16) | (73) | (9)
Corporate, Non-Segment | Other Operating Segment |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 151 |  |  | 190 | 260 | 318
Other financial information: |  |  |  |  |  |  |
Modified EBITDA |  | 86 |  |  | 118 | 136 | 193
Corporate, Non-Segment | Other Operating Segment | Certain South Mansfield Upstream Interests |  |  |  |  |  |  |
Other financial information: |  |  |  |  |  |  |
Gain on sale of certain assets (Note 3) |  | 12 |  |  |  | 194 |
Intersegment Eliminations [Member] |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | (392) |  |  | (327) | (744) | (670)
Williams Companies Inc [Member] | West [Member] | Income Statement Location [Axis]: us-gaap:OtherAssetImpairmentCharges | Level 2 [Member] |  |  |  |  |  |  |
Other financial information: |  |  |  |  |  |  |
Impairment of Long-Lived Assets to be Disposed of |  |  |  | $ 176 |  |  |
Transcontinental Gas Pipe Line Company, LLC [Member] |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 804 |  |  | 791 | 1,651 | 1,561
Other financial information: |  |  |  |  |  |  |
Depreciation, Depletion and Amortization |  | (146) |  |  | (166) | (290) | (315)
Interest expense |  | (83) |  |  | (81) | (169) | (162)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest |  | 367 |  |  | 314 | $ 751 | 635
Number of Reportable Segments | Reportable_segment |  |  |  |  |  | 1 |
Northwest Pipeline LLC [Member] |  |  |  |  |  |  |
Segment Reporting [Line Items] |  |  |  |  |  |  |
Revenues |  | 118 |  |  | 113 | $ 238 | 224
Other financial information: |  |  |  |  |  |  |
Depreciation, Depletion and Amortization |  | (31) |  |  | (30) | (61) | (59)
Interest expense |  | (9) |  |  | (7) | (17) | (14)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest |  | $ 47 |  |  | $ 45 | $ 99 | $ 91
Number of Reportable Segments | Reportable_segment |  |  |  |  |  | 1 |
[1] | Segment operating and administrative expenses primarily include payroll, maintenance and operating costs and taxes, and general and administrative expenses, including acquisition and transition-related expenses. It also includes project execution, information technology, finance and accounting, real estate and aviation, central engineering services, safety and operational discipline, supply chain and digital transformation, corporate strategic development, human resources, legal and government affairs, and executive and audit support services costs which are centrally managed and allocated to segments.
[2] | Recoverable power, transportation and storage costs are charges incurred which are reimbursable pursuant to FERC stipulations or customer contracts.
[3] | Other segment income (expenses) - net primarily includes equity AFUDC and regulatory credits and charges related to Williams’ regulated operations.
[4] | Williams records transactions that qualify as commodity derivatives at fair value with changes in fair value recognized in earnings in the period of change and characterized as unrealized gains or losses. Gains and losses from commodity derivatives held for energy trading purposes are presented on a net basis in revenue.
[5] | As Williams is acting as agent for natural gas marketing customers or engages in energy trading activities, the resulting revenues are presented net of the related costs of those activities.

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