REGULATORY MATTERS - Liquids Pipelines (Narrative) (Details) - CAD ($) $ in Millions |
Dec. 31, 2024 |
Dec. 31, 2023 |
|---|---|---|
| Public Utilities, General Disclosures [Line Items] | ||
| Total regulatory asset | $ 7,619 | $ 5,707 |
| Canadian Mainline | ||
| Public Utilities, General Disclosures [Line Items] | ||
| Total regulatory asset | $ 2,000 | $ 1,900 |