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Goodwill (Tables) | 12 Months Ended
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Dec. 31, 2020
Intangible Assets [Abstract] |
Changes in Carrying Amounts of Goodwill | The following table provides details about the changes in the carrying amounts of goodwill for the years ended December 31, 2020 and 2019. BCE’s groups of CGUs correspond to our reporting segments.
| NOTE | BELL WIRELESS | BELL WIRELINE | BELL MEDIA | BCE
Balance at January 1, 2019 |  | 3,046 |  | 4,681 |  | 2,931 |  | 10,658 |
Acquisitions and other |  | — |  | (6) |  | 15 |  | 9 |
Balance at December 31, 2019 |  | 3,046 |  | 4,675 |  | 2,946 |  | 10,667 |
Acquisitions and other |  | — |  | 52 |  | — |  | 52 |
Discontinued operations | 3 | — |  | (115) |  | — |  | (115) |
Balance at December 31, 2020 |  | 3,046 |  | 4,612 |  | 2,946 |  | 10,604 |
Key Assumptions Used to Estimate the Recoverable Amounts | The following table shows the key assumptions used to estimate the recoverable amounts of the groups of CGUs.
| ASSUMPTIONS USED
| PERPETUITY | DISCOUNT
GROUPS OF CGUs | GROWTH RATE | RATE
Bell Wireless | 0.8 | % | 9.1 | %
Bell Wireline | 1.0 | % | 6.0 | %
Bell Media | 0.5 | % | 8.5 | %

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- Definition The disclosure of information for cash-generating units. [Refer: Cash-generating units [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2020-01-01 -Paragraph 134 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2020-en-r&anchor=para_134&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The disclosure of the reconciliation of changes in intangible assets and goodwill. [Refer: Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 38 -IssueDate 2020-01-01 -Paragraph 118 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2020-en-r&anchor=para_118&doctype=Standard -URIDate 2020-01-01 + Details
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