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v3.25.4

Operating costs (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Labour costs |  |
Wages, salaries and related taxes and benefits | $ (3,992) | $ (4,134)
Post-employment benefit plans service cost (net of capitalized amounts) | (198) | (208)
Other labour costs | (883) | (987)
Less: |  |
Capitalized labour | 1,094 | 1,130
Total labour costs | (3,979) | (4,199)
Cost of revenues | (7,720) | (7,705)
Other operating costs | (2,111) | (1,916)
Total operating costs | (13,810) | (13,820)
Research and development expense | $ 60 | $ 66

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