SEGMENTED INFORMATION - Schedule of Reporting Information by Segment (Details) - CAD ($) $ in Millions |
3 Months Ended | 9 Months Ended | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
Dec. 31, 2025 |
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| Segmented Information | |||||||||||||
| Operating revenues | $ 21,077 | $ 14,639 | $ 72,752 | $ 48,017 | |||||||||
| Operating and administrative | (2,465) | (2,483) | (7,394) | (7,264) | |||||||||
| Impairment of long-lived assets | 0 | 0 | 0 | (330) | |||||||||
| Income from equity investments | 517 | 451 | 1,590 | 1,690 | |||||||||
| Earnings before interest, income taxes and depreciation and amortization | 4,369 | 4,202 | 14,845 | 14,483 | |||||||||
| Depreciation and amortization | (1,490) | (1,398) | (4,352) | (4,197) | |||||||||
| Interest expense | (1,049) | (1,262) | (3,666) | (3,777) | |||||||||
| Earnings before income taxes | 1,879 | 1,163 | 6,256 | 7,337 | |||||||||
| Capital expenditures | [1] | 3,517 | 2,347 | 9,040 | 6,041 | ||||||||
| Property, plant and equipment, net | 140,405 | $ 140,405 | $ 131,598 | ||||||||||
| Number Of Reportable Segments Disclosed By Definition Flag | true | ||||||||||||
| Business Segments | |||||||||||||
| Segmented Information | |||||||||||||
| Operating revenues | [2] | 20,873 | 14,423 | $ 71,884 | 47,000 | ||||||||
| Commodity and gas distribution costs | (14,796) | (8,330) | (51,919) | (27,131) | |||||||||
| Operating and administrative | (2,454) | (2,485) | (7,318) | (7,293) | |||||||||
| Impairment of long-lived assets | [3] | (330) | |||||||||||
| Income from equity investments | 522 | 455 | 1,602 | 1,701 | |||||||||
| Other income | 224 | 139 | 596 | 536 | |||||||||
| Business Segments | Liquids Pipelines | |||||||||||||
| Segmented Information | |||||||||||||
| Operating revenues | [2] | 17,420 | 11,183 | 58,103 | 34,204 | ||||||||
| Commodity and gas distribution costs | (14,484) | (8,032) | (49,031) | (24,623) | |||||||||
| Operating and administrative | (1,085) | (1,108) | (3,177) | (3,268) | |||||||||
| Impairment of long-lived assets | [3] | 0 | |||||||||||
| Income from equity investments | 234 | 230 | 742 | 843 | |||||||||
| Other income | 48 | 10 | 76 | 51 | |||||||||
| Earnings before interest, income taxes and depreciation and amortization | 2,133 | 2,283 | 6,713 | 7,207 | |||||||||
| Capital expenditures | [1] | 661 | 307 | 1,515 | 900 | ||||||||
| Property, plant and equipment, net | 53,085 | 53,085 | 51,689 | ||||||||||
| Business Segments | Gas Transmission | |||||||||||||
| Segmented Information | |||||||||||||
| Operating revenues | [2] | 1,726 | 1,597 | 5,227 | 4,916 | ||||||||
| Commodity and gas distribution costs | (44) | (12) | (96) | (39) | |||||||||
| Operating and administrative | (566) | (571) | (1,681) | (1,609) | |||||||||
| Impairment of long-lived assets | [3] | 0 | |||||||||||
| Income from equity investments | 248 | 192 | 707 | 665 | |||||||||
| Other income | 94 | 64 | 304 | 252 | |||||||||
| Earnings before interest, income taxes and depreciation and amortization | 1,458 | 1,270 | 4,461 | 4,185 | |||||||||
| Capital expenditures | [1] | 1,175 | 933 | 3,555 | 2,228 | ||||||||
| Property, plant and equipment, net | 39,178 | 39,178 | 35,421 | ||||||||||
| Business Segments | Gas Distribution and Storage | |||||||||||||
| Segmented Information | |||||||||||||
| Operating revenues | [2],[4] | 1,576 | 1,513 | 8,065 | 7,485 | ||||||||
| Commodity and gas distribution costs | [4] | (268) | (284) | (2,792) | (2,471) | ||||||||
| Operating and administrative | [4] | (708) | (719) | (2,192) | (2,179) | ||||||||
| Impairment of long-lived assets | [3],[4] | (330) | |||||||||||
| Income from equity investments | [4] | 4 | 1 | 4 | 2 | ||||||||
| Other income | [4] | 61 | 49 | 167 | 163 | ||||||||
| Earnings before interest, income taxes and depreciation and amortization | [4] | 665 | 560 | 3,252 | 2,670 | ||||||||
| Capital expenditures | [1] | 880 | 914 | 2,336 | 2,310 | ||||||||
| Property, plant and equipment, net | 41,512 | 41,512 | 39,644 | ||||||||||
| Business Segments | Renewable Power Generation | |||||||||||||
| Segmented Information | |||||||||||||
| Operating revenues | [2] | 151 | 130 | 489 | 395 | ||||||||
| Commodity and gas distribution costs | 0 | (2) | 0 | 2 | |||||||||
| Operating and administrative | (95) | (87) | (268) | (237) | |||||||||
| Impairment of long-lived assets | [3] | 0 | |||||||||||
| Income from equity investments | 36 | 32 | 149 | 191 | |||||||||
| Other income | 21 | 16 | 49 | 70 | |||||||||
| Earnings before interest, income taxes and depreciation and amortization | 113 | 89 | 419 | 421 | |||||||||
| Capital expenditures | [1] | 801 | 173 | 1,634 | 532 | ||||||||
| Property, plant and equipment, net | 6,291 | 6,291 | 4,439 | ||||||||||
| Eliminations and Other | |||||||||||||
| Segmented Information | |||||||||||||
| Eliminations and Other | 49 | (379) | (571) | 828 | |||||||||
| Capital expenditures | [1] | 0 | $ 20 | 0 | $ 71 | ||||||||
| Property, plant and equipment, net | $ 339 | $ 339 | $ 405 | ||||||||||
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| X | ||||||||||
- Definition Eliminations and other. No definition available.
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| X | ||||||||||
- Definition This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before interest, income taxes, extraordinary items, and noncontrolling interest. No definition available.
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- Definition Number of reportable segments disclosed by definition flag. No definition available.
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- Definition The aggregate cost of goods produced and sold and services rendered during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of impairment loss for long-lived asset held and used. Includes, but is not limited to, impairment loss for long-lived asset to be disposed of other than by sale. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of income (loss) for proportionate share of equity method investee's income (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of interest expense classified as nonoperating. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, after accumulated depreciation, depletion, and amortization, of property, plant, and equipment. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of expenditure for addition to long-lived asset included in determination of segment asset by chief operating decision maker (CODM) or otherwise regularly provided to CODM. Long-lived asset excludes financial instrument, long-term customer relationship of financial institution, mortgage and other servicing rights, deferred policy acquisition cost, and deferred tax asset. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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