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Income taxes - Significant Components of Income Taxes Deducted from Net Earnings (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Current taxes |  |
Current taxes | $ (923) | $ (878)
Uncertain tax positions | 8 | 91
Change in estimate relating to prior periods | 9 | 8
Deferred taxes |  |
Deferred taxes relating to the origination and reversal of temporary differences | (75) | (176)
Change in estimate relating to prior periods | 1 | (8)
Recognition and utilization of loss carryforwards | (24) | (4)
Uncertain tax positions | 8 | 0
Total income taxes | $ (996) | $ (967)

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