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Remaining performance obligations (Tables)
12 Months Ended
Dec. 31, 2022
Revenue From Contract With Customer1 [Abstract]  
Remaining performance obligations
The following table shows revenues expected to be recognized in the future related to performance obligations that are unsatisfied (or partially unsatisfied) as at December 31, 2022.
2023 2024 2025 2026 2027 THEREAFTER TOTAL
Wireline 1,343  1,090  739  461  181  472  4,286 
Wireless 1,482  647  40  —  —  2,170 
Total 2,825  1,737  779  462  181  472  6,456