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Leases - Disclosure of Right-Of-Use Assets (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | $ 29,256 | $ 28,235
Ending balance | 30,352 | 29,256
COST |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | 83,612 | 82,053
Additions | 5,961 | 5,893
Business disposition | (195) | (14)
Reclassified to assets held for sale | (18) |
Ending balance | 86,836 | 83,612
ACCUMULATED DEPRECIATION |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | (54,356) | (53,818)
Business disposition |  | (21)
Reclassified to assets held for sale | 6 |
Ending balance | (56,484) | (54,356)
Right-of-use assets |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | 4,150 | 4,079
Ending balance | 4,726 | 4,150
Right-of-use assets | COST |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | 7,812 | 7,171
Additions | 1,561 | 1,017
Transfers | (219) | (201)
Business disposition | (20) | (9)
Lease terminations | (52) | (42)
Impairment losses recognized in earnings | (30) | (124)
Reclassified to assets held for sale | (7) |
Ending balance | 9,045 | 7,812
Right-of-use assets | ACCUMULATED DEPRECIATION |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | (3,662) | (3,092)
Transfers | (114) | (117)
Business disposition | (3) | (7)
Lease terminations | (15) | (15)
Depreciation | 789 | 709
Ending balance | (4,319) | (3,662)
Right-of-use assets | NETWORK INFRASTRUCTURE AND EQUIPMENT |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | 1,889 | 1,686
Ending balance | 2,168 | 1,889
Right-of-use assets | NETWORK INFRASTRUCTURE AND EQUIPMENT | COST |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | 3,693 | 3,240
Additions | 832 | 681
Transfers | (215) | (195)
Business disposition | 0 | 2
Lease terminations | (37) | (35)
Impairment losses recognized in earnings | 0 | 0
Reclassified to assets held for sale | (2) |
Ending balance | 4,271 | 3,693
Right-of-use assets | NETWORK INFRASTRUCTURE AND EQUIPMENT | ACCUMULATED DEPRECIATION |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | (1,804) | (1,554)
Transfers | (113) | (112)
Business disposition | 0 | 0
Lease terminations | (13) | (12)
Depreciation | 425 | 374
Ending balance | (2,103) | (1,804)
Right-of-use assets | LAND AND BUILDINGS |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | 2,261 | 2,393
Ending balance | 2,558 | 2,261
Right-of-use assets | LAND AND BUILDINGS | COST |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | 4,119 | 3,931
Additions | 729 | 336
Transfers | (4) | (6)
Business disposition | (20) | (11)
Lease terminations | (15) | (7)
Impairment losses recognized in earnings | (30) | (124)
Reclassified to assets held for sale | (5) |
Ending balance | 4,774 | 4,119
Right-of-use assets | LAND AND BUILDINGS | ACCUMULATED DEPRECIATION |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Beginning balance | (1,858) | (1,538)
Transfers | (1) | (5)
Business disposition | (3) | (7)
Lease terminations | (2) | (3)
Depreciation | 364 | 335
Ending balance | $ (2,216) | $ (1,858)

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- Definition The amount of additions to property, plant and equipment other than those acquired through business combinations. [Refer: Business combinations [member]; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2023-01-01 -Paragraph 73 -Subparagraph e -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2023-en-r&anchor=para_73_e_i&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of property, plant and equipment including right-of-use assets whose underlying assets would be presented as property, plant and equipment if they were owned. [Refer: Property, plant and equipment; Right-of-use assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 54 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_54_a&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 16 -IssueDate 2023-01-01 -Paragraph 73 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2023-en-r&anchor=para_73_a&doctype=Standard -URIDate 2023-03-23 + Details
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