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ACQUISITIONS AND DISPOSITIONS - Noncontrolling Interest Investment and Disposition (Narrative) (Details) $ in Millions |  | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jul. 02, 2025 CAD ($) Community | Jun. 30, 2025 CAD ($) | Jun. 30, 2024 CAD ($) | Jun. 30, 2025 CAD ($) | Jun. 30, 2024 CAD ($) | Dec. 31, 2024 CAD ($) | Apr. 01, 2024 CAD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Gain on sale |  | $ 0 | $ 1,091 | $ 0 | $ 1,091 |  |
Goodwill |  | $ 35,162 |  | $ 35,162 |  | $ 36,600 |
Disposal Group, Alliance Pipeline And Aux Sable |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Gain on sale |  |  | $ 1,100 |  | $ 1,100 |  |
Disposal Group, Alliance Pipeline And Aux Sable | Gas Transmission |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  | $ 1,000
Disposal Group, Alliance Pipeline And Aux Sable | Pembina Pipeline Corporation |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Disposal group, consideration |  |  |  |  |  |  | 3,100
Non-recourse debt |  |  |  |  |  |  | $ 327
British Columbia Pipeline | Subsequent Event |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Number of communities represented | Community | 38 |  |  |  |  |  |
British Columbia Pipeline | Westcoast Energy Inc. | Subsequent Event |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Noncontrolling interest (percent) | 87.50% |  |  |  |  |  |
British Columbia Pipeline | Westcoast Energy Inc. | Disposition | Subsequent Event |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Investment by noncontrolling interest | $ 736 |  |  |  |  |  |
Cash consideration | $ 736 |  |  |  |  |  |
British Columbia Pipeline | Stonlasec8 Indigenous Alliance Limited Partnership | Disposition | Subsequent Event |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Ownership interest percentage held by noncontrolling owners | 12.50% |  |  |  |  |  |
Alliance Pipeline | Disposal Group, Alliance Pipeline And Aux Sable |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Ownership interest (as percent) |  |  |  |  |  |  | 50.00%
Aux Sable Midstream LLC and Aux Sable Liquid Products L.P. | Disposal Group, Alliance Pipeline And Aux Sable |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Ownership interest (as percent) |  |  |  |  |  |  | 42.70%
Aux Sable Canada LP [Member] | Disposal Group, Alliance Pipeline And Aux Sable |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Ownership interest (as percent) |  |  |  |  |  |  | 50.00%

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