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REVENUE (Tables) | 12 Months Ended
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Dec. 31, 2024
Revenue from Contract with Customer [Abstract] |
Schedule of Major Products and Services | Major Products and Services
| Liquids Pipelines | Gas Transmission | Gas Distribution and Storage | Renewable Power Generation | Eliminations and Other | Consolidated
Year ended December 31, 2024
(millions of Canadian dollars) |  |  |  |  |  |
Transportation revenue | 11,958 |  | 5,279 |  | 284 |  | — |  | — |  | 17,521 |
Storage and other revenue | 255 |  | 573 |  | 509 |  | — |  | — |  | 1,337 |
Gas distribution sales | — |  | — |  | 6,734 |  | — |  | — |  | 6,734 |
Electricity and transmission revenue | — |  | — |  | — |  | 189 |  | — |  | 189 |
Commodity sales | — |  | 158 |  | — |  | — |  | — |  | 158 |
Total revenue from contracts with customers | 12,213 |  | 6,010 |  | 7,527 |  | 189 |  | — |  | 25,939 |
Commodity sales | 25,689 |  | 99 |  | — |  | — |  | 1,072 |  | 26,860 |
Other revenue 1,2 | 281 |  | 70 |  | 4 |  | 319 |  | — |  | 674 |
Intersegment revenue | — |  | 20 |  | 11 |  | 6 |  | (37) |  | — |
Total revenue | 38,183 |  | 6,199 |  | 7,542 |  | 514 |  | 1,035 |  | 53,473 |
| Liquids Pipelines | Gas Transmission | Gas Distribution and Storage | Renewable Power Generation | Eliminations and Other | Consolidated
Year ended December 31, 2023
(millions of Canadian dollars) |  |  |  |  |  |
Transportation revenue 3 | 11,875 |  | 5,302 |  | 212 |  | — |  | — |  | 17,389 |
Storage and other revenue | 257 |  | 461 |  | 355 |  | — |  | — |  | 1,073 |
Gas distribution sales 3 | — |  | — |  | 5,461 |  | — |  | — |  | 5,461 |
Electricity and transmission revenue | — |  | — |  | — |  | 259 |  | — |  | 259 |
Commodity sales | — |  | 17 |  | — |  | — |  | — |  | 17 |
Total revenue from contracts with customers | 12,132 |  | 5,780 |  | 6,028 |  | 259 |  | — |  | 24,199 |
Commodity sales | 17,494 |  | — |  | — |  | — |  | 1,470 |  | 18,964 |
Other revenue 1,2 | 257 |  | 72 |  | (58) |  | 215 |  | — |  | 486 |
Intersegment revenue | (1) |  | 2 |  | 6 |  | 3 |  | (10) |  | — |
Total revenue | 29,882 |  | 5,854 |  | 5,976 |  | 477 |  | 1,460 |  | 43,649 |
| Liquids Pipelines | Gas Transmission | Gas Distribution and Storage | Renewable Power Generation | Eliminations and Other | Consolidated
Year ended December 31, 2022
(millions of Canadian dollars) |  |  |  |  |  |
Transportation revenue 3 | 11,283 |  | 5,012 |  | 198 |  | — |  | — |  | 16,493 |
Storage and other revenue | 235 |  | 350 |  | 308 |  | — |  | — |  | 893 |
Gas gathering and processing revenue | — |  | 22 |  | — |  | — |  | — |  | 22 |
Gas distribution sales 3 | — |  | — |  | 6,227 |  | — |  | — |  | 6,227 |
Electricity and transmission revenue | — |  | — |  | — |  | 281 |  | — |  | 281 |
Total revenue from contracts with customers | 11,518 |  | 5,384 |  | 6,733 |  | 281 |  | — |  | 23,916 |
Commodity sales | 25,740 |  | — |  | — |  | — |  | 3,410 |  | 29,150 |
Other revenue 1,2 | (81) |  | 39 |  | (20) |  | 305 |  | — |  | 243 |
Intersegment revenue | (3) |  | 3 |  | 16 |  | (4) |  | (12) |  | — |
Total revenue | 37,174 |  | 5,426 |  | 6,729 |  | 582 |  | 3,398 |  | 53,309 |
1 Includes realized and unrealized gains and losses from our hedging program which were a net gain of $23 million and losses of $97 million and $431 million for the years ended December 31, 2024, 2023 and 2022, respectively. 2 Includes revenues from lease contracts. Refer to Note 26 - Leases. 3 These balances reflect a transfer from Transportation revenue to Gas distribution sales of $602 million and $584 million for the years ended December 31, 2023 and 2022, respectively. Recognition and Measurement of Revenue
| Liquids Pipelines | Gas Transmission | Gas Distribution and Storage | Renewable Power Generation | Consolidated
Year ended December 31, 2024
(millions of Canadian dollars) |  |  |  |  |
Revenue from products transferred at a point in time | — |  | 158 |  | 137 |  | — |  | 295 |
Revenue from products and services transferred over time 1 | 12,213 |  | 5,852 |  | 7,390 |  | 189 |  | 25,644 |
Total revenue from contracts with customers | 12,213 |  | 6,010 |  | 7,527 |  | 189 |  | 25,939 |
| Liquids Pipelines | Gas Transmission | Gas Distribution and Storage | Renewable Power Generation | Consolidated
Year ended December 31, 2023
(millions of Canadian dollars) |  |  |  |  |
Revenue from products transferred at a point in time | — |  | 17 |  | 138 |  | — |  | 155 |
Revenue from products and services transferred over time 1 | 12,132 |  | 5,763 |  | 5,890 |  | 259 |  | 24,044 |
Total revenue from contracts with customers | 12,132 |  | 5,780 |  | 6,028 |  | 259 |  | 24,199 |
| Liquids Pipelines | Gas Transmission | Gas Distribution and Storage | Renewable Power Generation | Consolidated
Year ended December 31, 2022
(millions of Canadian dollars) |  |  |  |  |
Revenue from products transferred at a point in time | — |  | — |  | 127 |  | — |  | 127 |
Revenue from products and services transferred over time 1 | 11,518 |  | 5,384 |  | 6,606 |  | 281 |  | 23,789 |
Total revenue from contracts with customers | 11,518 |  | 5,384 |  | 6,733 |  | 281 |  | 23,916 |
1 Revenue from crude oil and natural gas pipeline transportation, storage, natural gas gathering, compression and treating, natural gas distribution, natural gas storage services and electricity sales.
Schedule of Contract Balances |
| Contract Receivables | Contract Assets | Contract Liabilities
(millions of Canadian dollars) |  |  |
Balance as at December 31, 2024 | 3,764 |  | 330 |  | 2,828 |
Balance as at December 31, 2023 | 2,802 |  | 400 |  | 2,591 |
Schedule of Performance Obligations | Performance Obligations
Segment | Nature of Performance Obligation
Liquids Pipelines | •Transportation and storage of crude oil and natural gas liquids (NGL)
Gas Transmission | •Transportation, storage, gathering, compression and treating of natural gas
•Transportation of crude oil and NGL
•Sale of renewable natural gas and its attached environmental attributes
Gas Distribution and Storage | •Supply and delivery of natural gas
•Transportation of natural gas
•Storage of natural gas
Renewable Power Generation | •Generation and transmission of electricity
•Delivery of electricity from renewable energy generation facilities
Schedule of Revenue Allocated to Remaining Performance Obligations | The following table presents our estimated revenue allocated to remaining performance obligations for contracted revenue that has not yet been recognized, that is expected to be recognized in the following periods:
| Total |  | 1 year | 2-5 years | Thereafter
(billions of Canadian dollars) |  |  |  |  |
Expected revenue | 62.6 |  |  | 10.4 |  | 25.2 |  | 27.0 |

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