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Business Segments and Related Information (Tables) | 9 Months Ended
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Sep. 30, 2025
Segment Reporting [Abstract] |
Schedule of Total Segment Gross Operating Margin to Income Before Income Taxes | The following table presents a reconciliation of total segment gross operating margin to income before income taxes for the periods indicated:
| For the Three Months Ended September 30, |  | For the Nine Months Ended September 30,
| 2025 |  | 2024 |  | 2025 |  | 2024
Total segment gross operating margin | $ | 2,383 |  |  | $ | 2,448 |  |  | $ | 7,318 |  |  | $ | 7,382 |
Adjustments to reconcile total segment gross operating margin to income before income taxes (addition or subtraction indicated by sign): |  |  |  |  |  |  |
Depreciation, amortization and accretion expense in operating costs and expenses (1) | (625) |  |  | (586) |  |  | (1,837) |  |  | (1,749) |
Asset impairment charges in operating costs and expenses | (17) |  |  | (27) |  |  | (38) |  |  | (51) |
Net gains (losses) attributable to asset sales and related matters in operating costs and expenses | 4 |  |  | – |  |  | 13 |  |  | (5) |
General and administrative costs | (61) |  |  | (61) |  |  | (189) |  |  | (184) |
Non-refundable payments received from shippers attributable to make-up rights (2) | – |  |  | (13) |  |  | (43) |  |  | (56) |
Subsequent recognition of revenues attributable to make-up rights (3) | 2 |  |  | 19 |  |  | 18 |  |  | 30 |
Total other expense, net (4) | (343) |  |  | (329) |  |  | (999) |  |  | (975) |
Income before income taxes | $ | 1,343 |  |  | $ | 1,451 |  |  | $ | 4,243 |  |  | $ | 4,392 |
(1)Excludes amortization of major maintenance costs for reaction-based plants and amortization of finance lease right-of-use (“ROU”) assets, which are components of gross operating margin. (2)Since make-up rights entail a future performance obligation by the pipeline to the shipper, these receipts are recorded as deferred revenue for GAAP purposes; however, these receipts are included in gross operating margin in the period of receipt since they are non-refundable to the shipper. (3)As deferred revenues attributable to make-up rights are subsequently recognized as revenue under GAAP, gross operating margin must be adjusted to remove such amounts to prevent duplication since the associated non-refundable payments were previously included in gross operating margin. (4)As presented on our Statements of Consolidated Operations, Total other expense, net is comprised of Interest expense, Interest income and Other, net.
Schedule of Segment Financial Information | The following tables present segment revenues and significant segment expenses by segment, together with a reconciliation to segment gross operating margin, for the periods indicated:
| For the Three Months Ended September 30, 2025
| NGL Pipelines & Services |  | Crude Oil Pipelines & Services |  | Natural Gas Pipelines & Services |  | Petrochemical & Refined Products Services |  | Segment Total
Segment revenues: |  |  |  |  |  |  |  |  |
Revenues from third parties | $ | 3,463 |  |  | $ | 5,389 |  |  | $ | 927 |  |  | $ | 2,230 |  |  | $ | 12,009 |
Revenues from related parties | 2 |  |  | 7 |  |  | 5 |  |  | – |  |  | 14 |
Intersegment and intrasegment revenues | 17,583 |  |  | 11,504 |  |  | 235 |  |  | 4,019 |  |  | 33,341 |
Total segment revenues | 21,048 |  |  | 16,900 |  |  | 1,167 |  |  | 6,249 |  |  | 45,364 |
Significant segment expenses: |  |  |  |  |  |  |  |  |
Cost of sales | 19,093 |  |  | 16,450 |  |  | 616 |  |  | 5,484 |  |  | 41,643 |
Variable operating costs and expenses (1) | 219 |  |  | 36 |  |  | 21 |  |  | 118 |  |  | 394 |
Fixed operating costs and expenses (2) | 456 |  |  | 116 |  |  | 194 |  |  | 282 |  |  | 1,048 |
Total significant segment expenses | 19,768 |  |  | 16,602 |  |  | 831 |  |  | 5,884 |  |  | 43,085 |
Other segment income: |  |  |  |  |  |  |  |  |
Equity in income of unconsolidated affiliates | 21 |  |  | 68 |  |  | 2 |  |  | (1) |  |  | 90 |
Other segment items (3) | 2 |  |  | 5 |  |  | 1 |  |  | 6 |  |  | 14 |
Total other segment income | 23 |  |  | 73 |  |  | 3 |  |  | 5 |  |  | 104 |
Total segment gross operating margin | $ | 1,303 |  |  | $ | 371 |  |  | $ | 339 |  |  | $ | 370 |  |  | $ | 2,383 |
Other financial information: |  |  |  |  |  |  |  |  |
Capital expenditures | $ | 1,097 |  |  | $ | 35 |  |  | $ | 674 |  |  | $ | 152 |  |  | $ | 1,958 |
(1)Variable operating costs and expenses represent the cost of operating our plants, pipelines and other fixed assets that generally fluctuate based on utilization. (2)Fixed operating costs and expenses represent the cost of operating our plants, pipelines and other fixed assets that generally remain constant independent of utilization. (3)Other segment items for each segment primarily represent the following: •NGL Pipelines & Services – Subsequent recognition of revenues attributable to make-up rights and other miscellaneous segment items. •Crude Oil Pipelines & Services – Other miscellaneous segment items. •Natural Gas Pipelines & Services – Other miscellaneous segment items. •Petrochemical & Refined Products Services – Other miscellaneous segment items.
| For the Nine Months Ended September 30, 2025
| NGL Pipelines & Services |  | Crude Oil Pipelines & Services |  | Natural Gas Pipelines & Services |  | Petrochemical & Refined Products Services |  | Segment Total
Segment revenues: |  |  |  |  |  |  |  |  |
Revenues from third parties | $ | 12,265 |  |  | $ | 15,281 |  |  | $ | 3,211 |  |  | $ | 8,008 |  |  | $ | 38,765 |
Revenues from related parties | 6 |  |  | 19 |  |  | 13 |  |  | – |  |  | 38 |
Intersegment and intrasegment revenues | 51,604 |  |  | 31,450 |  |  | 669 |  |  | 17,011 |  |  | 100,734 |
Total segment revenues | 63,875 |  |  | 46,750 |  |  | 3,893 |  |  | 25,019 |  |  | 139,537 |
Significant segment expenses: |  |  |  |  |  |  |  |  |
Cost of sales | 58,013 |  |  | 45,417 |  |  | 2,159 |  |  | 22,799 |  |  | 128,388 |
Variable operating costs and expenses (1) | 622 |  |  | 105 |  |  | 63 |  |  | 331 |  |  | 1,121 |
Fixed operating costs and expenses (2) | 1,321 |  |  | 305 |  |  | 566 |  |  | 859 |  |  | 3,051 |
Total significant segment expenses | 59,956 |  |  | 45,827 |  |  | 2,788 |  |  | 23,989 |  |  | 132,560 |
Other segment income: |  |  |  |  |  |  |  |  |
Equity in income of unconsolidated affiliates | 59 |  |  | 212 |  |  | 4 |  |  | 1 |  |  | 276 |
Other segment items (3) | 40 |  |  | 13 |  |  | 4 |  |  | 8 |  |  | 65 |
Total other segment income | 99 |  |  | 225 |  |  | 8 |  |  | 9 |  |  | 341 |
Total segment gross operating margin | $ | 4,018 |  |  | $ | 1,148 |  |  | $ | 1,113 |  |  | $ | 1,039 |  |  | $ | 7,318 |
Other financial information: |  |  |  |  |  |  |  |  |
Capital expenditures | $ | 2,557 |  |  | $ | 83 |  |  | $ | 1,304 |  |  | $ | 375 |  |  | $ | 4,319 |
(1)Variable operating costs and expenses represent the cost of operating our plants, pipelines and other fixed assets that generally fluctuate based on utilization. (2)Fixed operating costs and expenses represent the cost of operating our plants, pipelines and other fixed assets that generally remain constant independent of utilization. (3)Other segment items for each segment primarily represent the following: •NGL Pipelines & Services – Non-refundable payments received from shippers attributable to make-up rights, subsequent recognition of revenues attributable to make-up rights, and other miscellaneous segment items. •Crude Oil Pipelines & Services – Other miscellaneous segment items. •Natural Gas Pipelines & Services – Other miscellaneous segment items. •Petrochemical & Refined Products Services – Other miscellaneous segment items.
| For the Three Months Ended September 30, 2024
| NGL Pipelines & Services |  | Crude Oil Pipelines & Services |  | Natural Gas Pipelines & Services |  | Petrochemical & Refined Products Services |  | Segment Total
Segment revenues: |  |  |  |  |  |  |  |  |
Revenues from third parties | $ | 4,828 |  |  | $ | 5,241 |  |  | $ | 646 |  |  | $ | 3,044 |  |  | $ | 13,759 |
Revenues from related parties | 3 |  |  | 10 |  |  | 3 |  |  | – |  |  | 16 |
Intersegment and intrasegment revenues | 11,044 |  |  | 13,678 |  |  | 166 |  |  | 6,944 |  |  | 31,832 |
Total segment revenues | 15,875 |  |  | 18,929 |  |  | 815 |  |  | 9,988 |  |  | 45,607 |
Significant segment expenses: |  |  |  |  |  |  |  |  |
Cost of sales | 13,946 |  |  | 18,463 |  |  | 279 |  |  | 9,281 |  |  | 41,969 |
Variable operating costs and expenses (1) | 190 |  |  | 30 |  |  | 15 |  |  | 87 |  |  | 322 |
Fixed operating costs and expenses (2) | 425 |  |  | 103 |  |  | 174 |  |  | 259 |  |  | 961 |
Total significant segment expenses | 14,561 |  |  | 18,596 |  |  | 468 |  |  | 9,627 |  |  | 43,252 |
Other segment income: |  |  |  |  |  |  |  |  |
Equity in income of unconsolidated affiliates | 27 |  |  | 70 |  |  | 2 |  |  | – |  |  | 99 |
Other segment items (3) | (6) |  |  | (2) |  |  | – |  |  | 2 |  |  | (6) |
Total other segment income | 21 |  |  | 68 |  |  | 2 |  |  | 2 |  |  | 93 |
Total segment gross operating margin | $ | 1,335 |  |  | $ | 401 |  |  | $ | 349 |  |  | $ | 363 |  |  | $ | 2,448 |
Other financial information: |  |  |  |  |  |  |  |  |
Capital expenditures | $ | 629 |  |  | $ | 52 |  |  | $ | 246 |  |  | $ | 247 |  |  | $ | 1,174 |
(1)Variable operating costs and expenses represent the cost of operating our plants, pipelines and other fixed assets that generally fluctuate based on utilization. (2)Fixed operating costs and expenses represent the cost of operating our plants, pipelines and other fixed assets that generally remain constant independent of utilization. (3)Other segment items for each segment primarily represent the following: •NGL Pipelines & Services – Non-refundable payments received from shippers attributable to make-up rights, subsequent recognition of revenues attributable to make-up rights, and other miscellaneous segment items. •Crude Oil Pipelines & Services – Other miscellaneous segment items. •Natural Gas Pipelines & Services – Other miscellaneous segment items. •Petrochemical & Refined Products Services – Other miscellaneous segment items.
| For the Nine Months Ended September 30, 2024
| NGL Pipelines & Services |  | Crude Oil Pipelines & Services |  | Natural Gas Pipelines & Services |  | Petrochemical & Refined Products Services |  | Segment Total
Segment revenues: |  |  |  |  |  |  |  |  |
Revenues from third parties | $ | 14,227 |  |  | $ | 16,530 |  |  | $ | 2,106 |  |  | $ | 9,113 |  |  | $ | 41,976 |
Revenues from related parties | 9 |  |  | 24 |  |  | 9 |  |  | – |  |  | 42 |
Intersegment and intrasegment revenues | 34,157 |  |  | 42,547 |  |  | 481 |  |  | 18,982 |  |  | 96,167 |
Total segment revenues | 48,393 |  |  | 59,101 |  |  | 2,596 |  |  | 28,095 |  |  | 138,185 |
Significant segment expenses: |  |  |  |  |  |  |  |  |
Cost of sales | 42,713 |  |  | 57,679 |  |  | 1,106 |  |  | 25,866 |  |  | 127,364 |
Variable operating costs and expenses (1) | 531 |  |  | 102 |  |  | 54 |  |  | 266 |  |  | 953 |
Fixed operating costs and expenses (2) | 1,254 |  |  | 310 |  |  | 492 |  |  | 756 |  |  | 2,812 |
Total significant segment expenses | 44,498 |  |  | 58,091 |  |  | 1,652 |  |  | 26,888 |  |  | 131,129 |
Other segment income (expense): |  |  |  |  |  |  |  |  |
Equity in income of unconsolidated affiliates | 84 |  |  | 212 |  |  | 5 |  |  | 1 |  |  | 302 |
Other segment items (3) | 21 |  |  | 7 |  |  | 5 |  |  | (9) |  |  | 24 |
Total other segment income (expense), net | 105 |  |  | 219 |  |  | 10 |  |  | (8) |  |  | 326 |
Total segment gross operating margin | $ | 4,000 |  |  | $ | 1,229 |  |  | $ | 954 |  |  | $ | 1,199 |  |  | $ | 7,382 |
Other financial information: |  |  |  |  |  |  |  |  |
Capital expenditures | $ | 1,835 |  |  | $ | 133 |  |  | $ | 696 |  |  | $ | 821 |  |  | $ | 3,485 |
(1)Variable operating costs and expenses represent the cost of operating our plants, pipelines and other fixed assets that generally fluctuate based on utilization. (2)Fixed operating costs and expenses represent the cost of operating our plants, pipelines and other fixed assets that generally remain constant independent of utilization. (3)Other segment items for each segment primarily represent the following: •NGL Pipelines & Services – Non-refundable payments received from shippers attributable to make-up rights, subsequent recognition of revenues attributable to make-up rights, and other miscellaneous segment items. •Crude Oil Pipelines & Services – Other miscellaneous segment items. •Natural Gas Pipelines & Services – Other miscellaneous segment items. •Petrochemical & Refined Products Services – Other miscellaneous segment items. The following table reconciles total segment revenues as reported in the preceding tables to consolidated revenues as presented on our Unaudited Condensed Statements of Consolidated Operations:
| For the Three Months Ended September 30, |  | For the Nine Months Ended September 30,
| 2025 |  | 2024 |  | 2025 |  | 2024
Segment revenues: |  |  |  |  |  |  |
NGL Pipelines & Services | $ | 21,048 |  |  | $ | 15,875 |  |  | $ | 63,875 |  |  | $ | 48,393 |
Crude Oil Pipelines & Services | 16,900 |  |  | 18,929 |  |  | 46,750 |  |  | 59,101 |
Natural Gas Pipelines & Services | 1,167 |  |  | 815 |  |  | 3,893 |  |  | 2,596 |
Petrochemical & Refined Products Services | 6,249 |  |  | 9,988 |  |  | 25,019 |  |  | 28,095 |
Total segment revenues | 45,364 |  |  | 45,607 |  |  | 139,537 |  |  | 138,185 |
Elimination of intersegment and intrasegment revenues | (33,341) |  |  | (31,832) |  |  | (100,734) |  |  | (96,167) |
Total consolidated revenues | $ | 12,023 |  |  | $ | 13,775 |  |  | $ | 38,803 |  |  | $ | 42,018 |
The following table presents our segment assets, together with a reconciliation to our consolidated total assets, at the dates indicated:
| September 30, 2025 |  | December 31, 2024
NGL Pipelines & Services | $ | 23,394 |  |  | $ | 21,900 |
Crude Oil Pipelines & Services | 11,168 |  |  | 11,390 |
Natural Gas Pipelines & Services | 13,036 |  |  | 12,260 |
Petrochemical & Refined Products Services | 11,452 |  |  | 11,350 |
Total segment assets | 59,050 |  |  | 56,900 |
Construction in progress | 4,581 |  |  | 4,138 |
Current assets | 13,237 |  |  | 15,133 |
Other assets | 954 |  |  | 997 |
Consolidated total assets | $ | 77,822 |  |  | $ | 77,168 |
Schedule of Consolidated Revenues and Costs and Expenses | The following table presents additional information regarding our consolidated revenues and costs and expenses for the periods indicated:
| For the Three Months Ended September 30, |  | For the Nine Months Ended September 30,
| 2025 |  | 2024 |  | 2025 |  | 2024
Consolidated revenues: |  |  |  |  |  |  |
NGL Pipelines & Services | $ | 3,465 |  |  | $ | 4,831 |  |  | $ | 12,271 |  |  | $ | 14,236 |
Crude Oil Pipelines & Services | 5,396 |  |  | 5,251 |  |  | 15,300 |  |  | 16,554 |
Natural Gas Pipelines & Services | 932 |  |  | 649 |  |  | 3,224 |  |  | 2,115 |
Petrochemical & Refined Products Services | 2,230 |  |  | 3,044 |  |  | 8,008 |  |  | 9,113 |
Total consolidated revenues | $ | 12,023 |  |  | $ | 13,775 |  |  | $ | 38,803 |  |  | $ | 42,018 |
Consolidated costs and expenses |  |  |  |  |  |  |
Operating costs and expenses: |  |  |  |  |  |  |
Cost of sales | $ | 8,590 |  |  | $ | 10,387 |  |  | $ | 28,494 |  |  | $ | 31,976 |
Other operating costs and expenses (1) | 1,120 |  |  | 1,018 |  |  | 3,243 |  |  | 2,946 |
Depreciation, amortization and accretion | 643 |  |  | 601 |  |  | 1,886 |  |  | 1,791 |
Asset impairment charges | 17 |  |  | 27 |  |  | 38 |  |  | 51 |
Net losses (gains) attributable to asset sales and related matters | (4) |  |  | – |  |  | (13) |  |  | 5 |
General and administrative costs | 61 |  |  | 61 |  |  | 189 |  |  | 184 |
Total consolidated costs and expenses | $ | 10,427 |  |  | $ | 12,094 |  |  | $ | 33,837 |  |  | $ | 36,953 |
(1)Represents the cost of operating our plants, pipelines and other fixed assets excluding depreciation, amortization and accretion charges; asset impairment charges; and net losses (gains) attributable to asset sales and related matters.

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-25 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 + Details
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