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CAPITAL RISK MANAGEMENT - Narrative (Details) | Dec. 31, 2024 CAD ($) | Dec. 31, 2023 CAD ($) | Apr. 03, 2023 CAD ($)
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Disclosure of detailed information about business combination [line items] |  |  |
Target debt-leverage ratio | 3.5 |  |
Long-term debt | $ 38,200,000,000 | $ 39,755,000,000 |
Canada Infrastructure Bank Credit Facility due 2052 1.000% |  |  |
Disclosure of detailed information about business combination [line items] |  |  |
Long-term debt | 64,000,000 |  |
Shaw Communications Inc. |  |  |
Disclosure of detailed information about business combination [line items] |  |  |
Maximum borrowing capacity | $ 6,000,000,000 |  | $ 6,000,000,000

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