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Remaining performance obligations (Details) $ in Millions | Dec. 31, 2020 CAD ($)
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Disclosure of performance obligations [line items] |
Remaining performance obligations | $ 6,510
2021 |
Disclosure of performance obligations [line items] |
Remaining performance obligations | 3,056
2022 |
Disclosure of performance obligations [line items] |
Remaining performance obligations | 1,733
2023 |
Disclosure of performance obligations [line items] |
Remaining performance obligations | 637
2024 |
Disclosure of performance obligations [line items] |
Remaining performance obligations | 372
2025 |
Disclosure of performance obligations [line items] |
Remaining performance obligations | 181
THEREAFTER |
Disclosure of performance obligations [line items] |
Remaining performance obligations | 531
Wireline |
Disclosure of performance obligations [line items] |
Remaining performance obligations | 4,183
Wireline | 2021 |
Disclosure of performance obligations [line items] |
Remaining performance obligations | 1,411
Wireline | 2022 |
Disclosure of performance obligations [line items] |
Remaining performance obligations | 1,098
Wireline | 2023 |
Disclosure of performance obligations [line items] |
Remaining performance obligations | 593
Wireline | 2024 |
Disclosure of performance obligations [line items] |
Remaining performance obligations | 371
Wireline | 2025 |
Disclosure of performance obligations [line items] |
Remaining performance obligations | 180
Wireline | THEREAFTER |
Disclosure of performance obligations [line items] |
Remaining performance obligations | 530
Wireless |
Disclosure of performance obligations [line items] |
Remaining performance obligations | 2,327
Wireless | 2021 |
Disclosure of performance obligations [line items] |
Remaining performance obligations | 1,645
Wireless | 2022 |
Disclosure of performance obligations [line items] |
Remaining performance obligations | 635
Wireless | 2023 |
Disclosure of performance obligations [line items] |
Remaining performance obligations | 44
Wireless | 2024 |
Disclosure of performance obligations [line items] |
Remaining performance obligations | 1
Wireless | 2025 |
Disclosure of performance obligations [line items] |
Remaining performance obligations | 1
Wireless | THEREAFTER |
Disclosure of performance obligations [line items] |
Remaining performance obligations | $ 1

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