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Inventory (Details) - CAD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Inventories [Abstract] |  |
Wireless devices and accessories | $ 189 | $ 189
Merchandise and other | 293 | 250
Total inventory | 482 | 439
Inventory recognized in cost of revenues | $ 3,080 | $ 2,927

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