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Investments in associates and joint ventures (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Disclosure of associates [line items] |  |
Assets | $ 54,263 | $ 50,108
Liabilities | (34,780) | (32,254)
Investments in associates and joint ventures | 814 | 852
Operating revenues | 22,719 | 21,719
Net earnings | 2,970 | 3,087
BCE’s share of net losses | (31) | (89)
Joint ventures | Associates |  |
Disclosure of associates [line items] |  |
Assets | 3,796 | 3,856
Liabilities | (2,155) | (2,119)
Total net assets | 1,641 | 1,737
Operating revenues | 1,863 | 2,511
Expenses | (1,924) | (2,720)
Net earnings | $ (61) | $ (209)

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