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REGULATORY MATTERS -Southern Lights Pipeline (Narrative) (Details) - CAD ($) $ in Millions | 1 Months Ended |  |
--- | --- | --- | ---
Feb. 29, 2024 | Dec. 31, 2024 | Dec. 31, 2023
Public Utilities, General Disclosures [Line Items] |  |  |
Total regulatory asset |  | $ 7,619 | $ 5,707
Regulatory liabilities |  | $ 6,728 | 3,828
Southern Lights Pipeline |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Total regulatory asset |  |  | 92
Regulatory agreement term | 5 years |  |
Regulatory liabilities |  |  | 151
Deferred tax liabilities, regulatory assets |  |  | $ 23

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