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Operating costs
 6 Months Ended
Jun. 30, 2026
Analysis of income and expense [abstract]  
Operating costs Operating costs
Three monthsSix months
For the period ended June 30Note2026202520262025
Labour costs
Wages, salaries and related taxes and benefits(1,029)(989)(2,047)(1,971)
Post-employment benefit plans service cost (net of capitalized
    amounts)		12(46)(45)(100)(99)
Other labour costs (1)
(202)(224)(406)(447)
Less:
Capitalized labour279 266 551 525 
Total labour costs(998)(992)(2,002)(1,992)
Cost of revenues (2)
(1,894)(1,912)(3,849)(3,802)
Other operating costs (3)
(582)(507)(1,160)(989)
Total operating costs(3,474)(3,411)(7,011)(6,783)
(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.