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Segmented information - Segmented Information (Details) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2021 CAD ($) | Jun. 30, 2020 CAD ($) | Dec. 31, 2021 CAD ($) segment | Dec. 31, 2020 CAD ($)
Operating Segments [Abstract] |  |  |  |
Number of operating segments | segment |  |  | 3 |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | $ 23,449 | $ 22,883
Operating costs |  |  | (13,556) | (13,276)
Segment profit |  |  | 9,893 | 9,607
Severance, acquisition and other costs |  |  | (209) | (116)
Depreciation and amortization |  |  | (4,609) | (4,404)
Finance costs |  |  |  |
Interest expense |  |  | (1,082) | (1,110)
Interest on post-employment benefit obligations |  |  | (20) | (46)
Impairment of assets |  |  | (197) | (472)
Other income (expense) |  |  | 160 | (194)
Income taxes |  |  | (1,044) | (792)
Net earnings from continuing operations |  |  | 2,892 | 2,473
Net earnings from discontinued operations |  |  | 0 | 226
Total net (losses) income |  |  | 2,892 | 2,699
Goodwill |  |  | 10,572 | 10,604
Indefinite-life intangible assets |  |  | 9,775 | 7,840
Capital expenditures |  |  | 4,837 | 4,202
Operating Service |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | 20,350 | 19,832
Total products |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | 3,099 | 3,051
BELL WIRELESS |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | 8,948 | 8,630
Finance costs |  |  |  |
Goodwill |  |  | 3,046 | 3,046
Indefinite-life intangible assets |  |  | 6,148 | 4,063
Capital expenditures |  |  | 1,120 | 916
BELL WIRELESS | Operating Service |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | 6,355 | 6,122
BELL WIRELINE |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | 11,820 | 11,884
Finance costs |  |  |  |
Goodwill |  |  | 4,580 | 4,612
Indefinite-life intangible assets |  |  | 1,692 | 1,692
Capital expenditures |  |  | 3,597 | 3,161
BELL WIRELINE | Operating Service |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | 11,314 | 11,341
BELL WIRELINE | Total products |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | 506 | 543
BELL MEDIA |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | 2,681 | 2,369
Finance costs |  |  |  |
Impairment of assets | $ (163) | $ (452) |  |
Goodwill |  |  | 2,946 | 2,946
Indefinite-life intangible assets |  |  | 1,935 | 2,085
Capital expenditures |  |  | 120 | 125
BELL MEDIA | Operating Service |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | 2,681 | 2,369
BELL MEDIA | Total products |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | 0 | 0
Intersegment eliminations |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | (764) | (756)
Operating costs |  |  | 764 | 756
Finance costs |  |  |  |
Capital expenditures |  |  | 0 | 0
Intersegment eliminations | Operating Service |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | (758) | (749)
Intersegment eliminations | Total products |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | (6) | (7)
Intersegment eliminations | BELL WIRELESS |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | 51 | 53
Intersegment eliminations | BELL WIRELESS | Operating Service |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | 45 | 47
Intersegment eliminations | BELL WIRELESS | Total products |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | 6 | 6
Intersegment eliminations | BELL WIRELINE |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | 358 | 322
Intersegment eliminations | BELL WIRELINE | Operating Service |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | 358 | 321
Intersegment eliminations | BELL WIRELINE | Total products |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | 0 | 1
Intersegment eliminations | BELL MEDIA |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | 355 | 381
Intersegment eliminations | BELL MEDIA | Operating Service |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | 355 | 381
Intersegment eliminations | BELL MEDIA | Total products |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | 0 | 0
Operating segments | BELL WIRELESS |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | 8,999 | 8,683
Operating costs |  |  | (5,146) | (5,017)
Segment profit |  |  | 3,853 | 3,666
Operating segments | BELL WIRELESS | Operating Service |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | 6,400 | 6,169
Operating segments | BELL WIRELESS | Total products |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | 2,599 | 2,514
Operating segments | BELL WIRELINE |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | 12,178 | 12,206
Operating costs |  |  | (6,863) | (6,960)
Segment profit |  |  | 5,315 | 5,246
Operating segments | BELL WIRELINE | Operating Service |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | 11,672 | 11,662
Operating segments | BELL WIRELINE | Total products |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | 506 | 544
Operating segments | BELL MEDIA |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | 3,036 | 2,750
Operating costs |  |  | (2,311) | (2,055)
Segment profit |  |  | 725 | 695
Operating segments | BELL MEDIA | Operating Service |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | 3,036 | 2,750
Operating segments | BELL MEDIA | Total products |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Operating revenues |  |  | $ 0 | $ 0

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