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INTANGIBLE ASSETS AND GOODWILL - Changes in net carrying amounts of intangible assets and goodwill (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Total intangible assets |  |
Beginning of period | $ 12,251 | $ 12,281
End of period | 17,896 | 12,251
Goodwill |  |
Goodwill at beginning of period | 4,031 |
Goodwill at end of period | 16,280 | 4,031
Total intangible assets and goodwill |  |
Intangible assets and goodwill at beginning of period | 16,282 | 16,305
Intangible assets and goodwill at end of period | 34,176 | 16,282
Gross Carrying Amount, Before Adjustment |  |
Total intangible assets |  |
Beginning of period | 14,327 | 14,343
Accumulated impairment losses | (118) | (118)
End of period |  | 14,327
Total intangible assets and goodwill |  |
Intangible assets and goodwill at beginning of period | 18,579 | 18,588
Accumulated impairment losses | (339) | (339)
Intangible assets and goodwill at end of period |  | 18,579
Gross carrying amount |  |
Indefinite-life |  |
Acquisitions through business combinations, intangible assets and goodwill | 18,306 |
Acquisitions through business combinations, intangible assets other than goodwill | 6,057 |
Total intangible assets |  |
Beginning of period | 14,209 | 14,225
Additions | 77 | 52
Disposals and other | 63 | 68
End of period | 20,280 | 14,209
Total intangible assets and goodwill |  |
Intangible assets and goodwill at beginning of period | 18,240 | 18,249
Additions | 77 | 59
Disposals and other | (63) | (68)
Intangible assets and goodwill at end of period | 36,560 | 18,240
Accumulated amortization |  |
Total intangible assets |  |
Beginning of period | (1,958) | (1,944)
Accumulated impairment losses | 489 | 82
Disposals and other | (63) | (68)
End of period | (2,384) | (1,958)
Total intangible assets and goodwill |  |
Intangible assets and goodwill at beginning of period | (1,958) | (1,944)
Accumulated impairment losses | 489 | 82
Disposals and other | (63) | 68
Intangible assets and goodwill at end of period | (2,384) | (1,958)
Customer relationships |  |
Finite-life |  |
Beginning of period | 47 | 63
End of period | 5,579 | 47
Customer relationships | Gross Carrying Amount, Before Adjustment |  |
Finite-life |  |
Beginning of period | 1,674 | 1,669
Accumulated impairment losses | 0 | 0
End of period |  | 1,674
Customer relationships | Gross carrying amount |  |
Indefinite-life |  |
Acquisitions through business combinations, intangible assets other than goodwill | 5,930 |
Finite-life |  |
Beginning of period | 1,674 | 1,669
Additions | 0 | 5
Disposals and other | 0 | 0
End of period | 7,604 | 1,674
Customer relationships | Accumulated amortization |  |
Finite-life |  |
Beginning of period | 1,627 | 1,606
Accumulated impairment losses | 398 | 21
Disposals and other | 0 | 0
End of period | 2,025 | 1,627
Acquired program rights |  |
Finite-life |  |
Beginning of period | 123 | 137
End of period | 127 | 123
Acquired program rights | Gross Carrying Amount, Before Adjustment |  |
Finite-life |  |
Beginning of period | 189 | 210
Accumulated impairment losses | (5) | (5)
End of period |  | 189
Acquired program rights | Gross carrying amount |  |
Indefinite-life |  |
Acquisitions through business combinations, intangible assets other than goodwill | 0 |
Finite-life |  |
Beginning of period | 184 | 205
Additions | 74 | 47
Disposals and other | 63 | 68
End of period | 195 | 184
Acquired program rights | Accumulated amortization |  |
Finite-life |  |
Beginning of period | 61 | 68
Accumulated impairment losses | 70 | 61
Disposals and other | (63) | (68)
End of period | 68 | 61
Goodwill |  |
Goodwill |  |
Goodwill at beginning of period | 4,031 | 4,024
Goodwill at end of period | 16,280 | 4,031
Goodwill | Gross Carrying Amount, Before Adjustment |  |
Goodwill |  |
Goodwill at beginning of period | 4,252 | 4,245
Accumulated impairment losses | (221) | (221)
Goodwill at end of period |  | 4,252
Goodwill | Gross carrying amount |  |
Indefinite-life |  |
Acquisitions Through Business Combinations, Goodwill | 12,249 |
Goodwill |  |
Goodwill at beginning of period | 4,031 | 4,024
Additions | 0 | 7
Disposals and other | 0 | 0
Goodwill at end of period | 16,280 | 4,031
Goodwill | Accumulated amortization |  |
Goodwill |  |
Goodwill at beginning of period | 0 | 0
Accumulated impairment losses | 0 | 0
Disposals and other | 0 | 0
Goodwill at end of period | 0 | 0
Total intangible assets and goodwill |  |
Intangible assets and goodwill at beginning of period | (221) |
Intangible assets and goodwill at end of period |  | (221)
Brand names |  |
Finite-life |  |
Beginning of period | 0 |
End of period | 56 | 0
Brand names | Gross Carrying Amount, Before Adjustment |  |
Finite-life |  |
Beginning of period | 0 |
Accumulated impairment losses | 0 |
End of period |  | 0
Brand names | Gross carrying amount |  |
Indefinite-life |  |
Acquisitions through business combinations, intangible assets other than goodwill | 75 |
Finite-life |  |
Beginning of period | 0 |
Additions | 0 |
Disposals and other | 0 |
End of period | 75 | 0
Brand names | Accumulated amortization |  |
Finite-life |  |
Beginning of period | 0 |
Accumulated impairment losses | 19 |
Disposals and other | 0 |
End of period | 19 | 0
Other intangible assets |  |
Finite-life |  |
Beginning of period | 0 |
End of period | 50 | 0
Other intangible assets | Gross Carrying Amount, Before Adjustment |  |
Finite-life |  |
Beginning of period | 0 |
Accumulated impairment losses | 0 |
End of period |  | 0
Other intangible assets | Gross carrying amount |  |
Indefinite-life |  |
Acquisitions through business combinations, intangible assets other than goodwill | 52 |
Finite-life |  |
Beginning of period | 0 |
Additions | 0 |
Disposals and other | 0 |
End of period | 52 | 0
Other intangible assets | Accumulated amortization |  |
Finite-life |  |
Beginning of period | 0 |
Accumulated impairment losses | 2 |
Disposals and other | 0 |
End of period | 2 | 0
Customer Relationships, Brand Names, And Other | Accumulated amortization |  |
Total intangible assets |  |
Accumulated impairment losses | (419) |
Spectrum licences |  |
Indefinite-life |  |
Beginning of period | 11,714 | 11,714
Period end | 11,717 | 11,714
Spectrum licences | Gross Carrying Amount, Before Adjustment |  |
Indefinite-life |  |
Beginning of period | 11,714 | 11,714
Accumulated impairment losses | 0 | 0
Period end |  | 11,714
Spectrum licences | Gross carrying amount |  |
Indefinite-life |  |
Beginning of period | 11,714 | 11,714
Additions | 3 | 0
Acquisitions through business combinations, intangible assets other than goodwill | 0 |
Disposals and other | 0 | 0
Period end | 11,717 | 11,714
Spectrum licences | Accumulated amortization |  |
Indefinite-life |  |
Beginning of period | 0 | 0
Accumulated impairment losses | 0 | 0
Period end | 0 | 0
Total intangible assets |  |
Disposals and other | 0 | 0
Broadcast licences |  |
Indefinite-life |  |
Beginning of period | 231 | 231
Period end | 231 | 231
Broadcast licences | Gross Carrying Amount, Before Adjustment |  |
Indefinite-life |  |
Beginning of period | 330 | 330
Accumulated impairment losses | 99 | 99
Period end |  | 330
Broadcast licences | Gross carrying amount |  |
Indefinite-life |  |
Beginning of period | 231 | 231
Additions | 0 | 0
Acquisitions through business combinations, intangible assets other than goodwill | 0 |
Disposals and other | 0 | 0
Period end | 231 | 231
Broadcast licences | Accumulated amortization |  |
Indefinite-life |  |
Beginning of period | 0 | 0
Accumulated impairment losses | 0 | 0
Period end | 0 | 0
Total intangible assets |  |
Disposals and other | 0 | 0
Brand names |  |
Indefinite-life |  |
Beginning of period | 136 | 136
Period end | 136 | 136
Brand names | Gross Carrying Amount, Before Adjustment |  |
Indefinite-life |  |
Beginning of period | 420 | 420
Accumulated impairment losses | 14 | 14
Period end |  | 420
Brand names | Gross carrying amount |  |
Indefinite-life |  |
Beginning of period | 406 | 406
Additions | 0 | 0
Acquisitions through business combinations, intangible assets other than goodwill | 0 |
Disposals and other | 0 | 0
Period end | 406 | 406
Brand names | Accumulated amortization |  |
Indefinite-life |  |
Beginning of period | 270 | 270
Accumulated impairment losses | 0 | 0
Period end | 270 | 270
Total intangible assets |  |
Disposals and other | $ 0 | $ 0

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