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BUSINESS COMBINATIONS - Schedule of Purchase Price Allocation (Details) shares in Millions |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Apr. 03, 2023 CAD ($) | Dec. 31, 2024 CAD ($) | Dec. 31, 2023 CAD ($) | Apr. 30, 2023 CAD ($) | Apr. 03, 2023 shares | Apr. 03, 2023
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |
Goodwill |  | $ 16,280,000,000 | $ 16,280,000,000 |  |  |
Amortization of deferred transaction costs |  | $ 141,000,000 | $ 136,000,000 |  |  |
Weighted average |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |
Interest rate |  | 4.61% | 4.85% |  |  |
Shaw Communications Inc. |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |
Cash consideration | $ 19,033,000,000 |  |  |  |  |
Class B non-voting shares (in shares) |  |  |  |  | 23.6 | 23,600,000
Issuance of 23.6 million Class B Non-Voting shares | 1,450,000,000 |  |  |  |  |
Fair value of consideration transferred | 20,483,000,000 |  |  |  |  |
Allowance for doubtful accounts | 31,000,000 |  |  |  |  |
Accounts receivable (net of allowance for doubtful accounts of $31 million) | 310,000,000 |  |  |  |  |
Other current assets | 2,448,000,000 |  |  |  |  |
Property, plant and equipment | 8,022,000,000 |  |  |  |  |
Intangible assets | 5,974,000,000 |  |  |  |  |
Investments | 123,000,000 |  |  |  |  |
Other long-term assets | 48,000,000 |  |  |  |  |
Bank advances | (25,000,000) |  |  |  |  |
Short-term borrowings | (200,000,000) |  |  |  |  |
Accounts payable and accrued liabilities | (545,000,000) |  |  |  |  |
Other current liabilities | (33,000,000) |  |  |  |  |
Contract liabilities | (164,000,000) |  |  |  |  |
Current portion of long-term debt | (1,000,000,000) |  |  |  |  |
Current portion of lease liabilities | (59,000,000) |  |  |  |  |
Provisions | (6,000,000) |  |  |  |  |
Long-term debt | (3,526,000,000) |  |  |  |  |
Lease liabilities | (268,000,000) |  |  |  |  |
Other long-term liabilities | (109,000,000) |  |  |  |  |
Deferred tax liabilities | (2,693,000,000) |  |  |  |  |
Total fair value of identifiable net assets acquired | 8,297,000,000 |  |  |  |  |
Goodwill | 12,186,000,000 |  |  |  |  |
Cash settlement | 151,000,000 |  |  |  |  |
Identifiable intangible assets recognised as of acquisition date | 5,974,000,000 |  |  |  |  |
Borrowings recognised as of acquisition date | 4,550,000,000 |  |  | $ 4,550,000,000 |  |
Amortization of deferred transaction costs | $ 24,000,000 |  |  |  |  |
Weighted average term to maturity | 9 years 8 months 12 days |  |  |  |  |
Goodwill expected to be deductible for tax purposes | $ 0 |  |  |  |  |
Shaw Communications Inc. | Wireless |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |
Intangible assets | 270,000,000 |  |  |  |  |
Goodwill | 432,000,000 |  |  |  |  |
Identifiable intangible assets recognised as of acquisition date | 270,000,000 |  |  |  |  |
Shaw Communications Inc. | Cable West |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |
Intangible assets | 5,314,000,000 |  |  |  |  |
Goodwill | 11,675,000,000 |  |  |  |  |
Identifiable intangible assets recognised as of acquisition date | 5,314,000,000 |  |  |  |  |
Shaw Communications Inc. | Satellite |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |
Intangible assets | 390,000,000 |  |  |  |  |
Goodwill | 79,000,000 |  |  |  |  |
Identifiable intangible assets recognised as of acquisition date | $ 390,000,000 |  |  |  |  |
Shaw Communications Inc. | Brand names |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |
Useful life measured as period of time, intangible assets other than goodwill | 3 years | 3 years |  |  |  |
Shaw Communications Inc. | Other intangible assets |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |
Useful life measured as period of time, intangible assets other than goodwill | 15 years | 15 years |  |  |  |
Shaw Communications Inc. | Minimum |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |
Useful life measured as period of time, property, plant and equipment | 1 year |  |  |  |  |
Shaw Communications Inc. | Minimum | Cable and wireless network |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |
Useful life measured as period of time, property, plant and equipment |  | 1 year |  |  |  |
Shaw Communications Inc. | Minimum | Customer relationships |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |
Useful life measured as period of time, intangible assets other than goodwill | 8 years | 8 years |  |  |  |
Shaw Communications Inc. | Maximum |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |
Useful life measured as period of time, property, plant and equipment | 36 years |  |  |  |  |
Shaw Communications Inc. | Maximum | Cable and wireless network |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |
Useful life measured as period of time, property, plant and equipment |  | 30 years |  |  |  |
Shaw Communications Inc. | Maximum | Customer relationships |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |
Useful life measured as period of time, intangible assets other than goodwill | 15 years | 15 years |  |  |  |
Shaw Communications Inc. | Weighted average |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |
Interest rate |  |  |  |  |  | 4.70%

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