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Foreign Exchange (Details) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2022 CAD ($)	Dec. 31, 2021 CAD ($)	Dec. 31, 2021 USD ($)
Effects Of Changes In Foreign Exchange Rates [Line Items]
Adjustments for unrealised foreign exchange losses (gains)	$ (45,073)	$ 1,905
Realized foreign exchange gain	(1,632)	(963)
Foreign exchange loss (gain)	43,441	(2,868)
Intercompany notes			$ 601.0
Unrealized foreign exchange loss - intercompany notes
Effects Of Changes In Foreign Exchange Rates [Line Items]
Adjustments for unrealised foreign exchange losses (gains)	(2,674)	12,000
Unrealized foreign exchange loss (gain) - long-term notes & Credit Facilities
Effects Of Changes In Foreign Exchange Rates [Line Items]
Adjustments for unrealised foreign exchange losses (gains)	$ 47,747	$ (13,905)

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Effects Of Changes In Foreign Exchange Rates

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Foreign Currency Transaction Gain (Loss), Realized1

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Intercompany Notes

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Adjustments for unrealised foreign exchange losses (gains) to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Profit (loss)]

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The amount of exchange differences recognised in profit or loss that arise from foreign currency transactions, excluding those arising on financial instruments measured at fair value through profit or loss in accordance with IFRS 9. [Refer: At fair value [member]; Financial instruments, class [member]]

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