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Income Tax - Summary Of Deductible Temporary Differences Of Income Tax Expenses (Detail) - CAD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
 [1]
Disclosure of Deductible Temporary Differences of Income Tax Expenses [Line Items]    
Deductible temporary differences for which no deferred tax asset is recognised $ 1,209,815 $ 1,179,064
Canadian Tax Losses [Member]    
Disclosure of Deductible Temporary Differences of Income Tax Expenses [Line Items]    
Deductible temporary differences for which no deferred tax asset is recognised 336,414 215,703
Canadian Long-term assets [Member]    
Disclosure of Deductible Temporary Differences of Income Tax Expenses [Line Items]    
Deductible temporary differences for which no deferred tax asset is recognised 667 23,896
Canadian Accounting provisions and other accruals [Member]    
Disclosure of Deductible Temporary Differences of Income Tax Expenses [Line Items]    
Deductible temporary differences for which no deferred tax asset is recognised 20,092 29,143
Foreign tax Losses [Member]    
Disclosure of Deductible Temporary Differences of Income Tax Expenses [Line Items]    
Deductible temporary differences for which no deferred tax asset is recognised [2] 910,300 975,297
Foreign Long-term assets [Member]    
Disclosure of Deductible Temporary Differences of Income Tax Expenses [Line Items]    
Deductible temporary differences for which no deferred tax asset is recognised [2] 53,940 53,830
Foreign Accounting provisions and other accruals [Member]    
Disclosure of Deductible Temporary Differences of Income Tax Expenses [Line Items]    
Deductible temporary differences for which no deferred tax asset is recognised [2] $ 3,718 $ 11,145
[1] Certain balances as at December 31, 2022 have been restated as a result of measurement period adjustments related to the Transaction as required by IFRS 3 “Business Combinations”, refer to Note 6 “Acquisition” for more information.
[2] The movement in foreign tax losses, long-term assets, and accounting provisions and other accruals for 2022 were primarily acquired as part of the Transaction.