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Segmented information - Segmented Information (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 CAD ($) segment | Dec. 31, 2016 CAD ($)
Operating Segments [Abstract] |  |
Number of operating segments | segment | 3 |
Disclosure of operating segments [line items] |  |
Operating revenues | $ 22,719 | $ 21,719
Operating costs | (13,541) | (12,931)
Segment profit | 9,178 | 8,788
Severance, acquisition and other costs | (190) | (135)
Depreciation and amortization | (3,850) | (3,508)
Interest expense | (955) | (888)
Interest on post-employment benefit obligations | (72) | (81)
Other expense | (102) | 21
Income taxes | (1,039) | (1,110)
Net earnings | 2,970 | 3,087
Goodwill | 10,428 | 8,958
Indefinite-life intangible assets | 8,228 | 7,943
Capital expenditures | 4,034 | 3,771
BELL WIRELESS |  |
Disclosure of operating segments [line items] |  |
Operating revenues | 7,838 | 7,117
Severance, acquisition and other costs | (18) | (6)
Depreciation and amortization | (603) | (555)
Goodwill | 3,032 | 2,304
Indefinite-life intangible assets | 3,891 | 3,663
Capital expenditures | 731 | 733
BELL WIRELINE |  |
Disclosure of operating segments [line items] |  |
Operating revenues | 12,205 | 11,917
Severance, acquisition and other costs | (150) | (130)
Depreciation and amortization | (3,102) | (2,816)
Goodwill | 4,497 | 3,831
Indefinite-life intangible assets | 1,692 | 1,640
Capital expenditures | 3,174 | 2,936
BELL MEDIA |  |
Disclosure of operating segments [line items] |  |
Operating revenues | 2,676 | 2,685
Severance, acquisition and other costs | (22) | 1
Depreciation and amortization | (145) | (137)
Goodwill | 2,899 | 2,823
Indefinite-life intangible assets | 2,645 | 2,640
Capital expenditures | 129 | 102
Operating segments | BELL WIRELESS |  |
Disclosure of operating segments [line items] |  |
Operating revenues | 7,883 | 7,159
Operating costs | (4,607) | (4,156)
Segment profit | 3,276 | 3,003
Operating segments | BELL WIRELINE |  |
Disclosure of operating segments [line items] |  |
Operating revenues | 12,415 | 12,104
Operating costs | (7,229) | (7,062)
Segment profit | 5,186 | 5,042
Operating segments | BELL MEDIA |  |
Disclosure of operating segments [line items] |  |
Operating revenues | 3,104 | 3,081
Operating costs | (2,388) | (2,338)
Segment profit | 716 | 743
Intersegment eliminations |  |
Disclosure of operating segments [line items] |  |
Operating revenues | (683) | (625)
Operating costs | 683 | 625
Intersegment eliminations | BELL WIRELESS |  |
Disclosure of operating segments [line items] |  |
Operating revenues | 45 | 42
Intersegment eliminations | BELL WIRELINE |  |
Disclosure of operating segments [line items] |  |
Operating revenues | 210 | 187
Intersegment eliminations | BELL MEDIA |  |
Disclosure of operating segments [line items] |  |
Operating revenues | $ 428 | $ 396

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