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Operating costs (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Labour costs |  |
Wages, salaries and related taxes and benefits | $ (4,236) | $ (4,108)
Post-employment benefit plans service cost (net of capitalized amounts) | (266) | (269)
Other labour costs | (990) | (975)
Less: |  |
Capitalized labour | 1,068 | 1,007
Total labour costs | (4,424) | (4,345)
Cost of revenues | (7,290) | (6,967)
Other operating costs | (1,842) | (1,964)
Total operating costs | (13,556) | (13,276)
Research and development expense | $ 57 | $ 47

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- Definition Employee Benefits Expense, Excluding Termination + References No definition available. + Details
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- Definition The amount of all expenses directly or indirectly attributed to the goods or services sold. Attributed expenses include, but are not limited to, costs previously included in the measurement of inventory that has now been sold, such as depreciation and maintenance of factory buildings and equipment used in the production process, unallocated production overheads, and abnormal amounts of production costs of inventories. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 99 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_99&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 103 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_103&doctype=Standard -URIDate 2021-03-24 + Details
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