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Operating costs
12 Months Ended
Dec. 31, 2023
Analysis of income and expense [abstract]  
Operating costs
Note 5 Operating costs
FOR THE YEAR ENDED DECEMBER 31 NOTE 2023 2022
Labour costs
Wages, salaries and related taxes and benefits (4,354) (4,250)
Post-employment benefit plans service cost (net of capitalized amounts) 27 (206) (249)
Other labour costs(1)
(1,063) (1,054)
Less:
Capitalized labour 1,217  1,136 
Total labour costs (4,406) (4,417)
Cost of revenues(2)
(7,926) (7,641)
Other operating costs (3)
(1,924) (1,917)
Total operating costs (14,256) (13,975)
(1)Other labour costs include contractor and outsourcing costs.
(2)Cost of revenues includes costs of wireless devices and other equipment sold, network and content costs, and payments to other carriers.
(3)Other operating costs include marketing, advertising and sales commission costs, bad debt expense, taxes other than income taxes, information technology costs, professional service fees and rent.

Research and development expenses of $90 million and $57 million are included in operating costs for 2023 and 2022, respectively.