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Capital Management - Adjusted Funds Flow (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 CAD ($)	Dec. 31, 2020 CAD ($)
Corporate Information And Statement Of IFRS Compliance [Abstract]
Cash flows from operating activities	$ 712,384	$ 353,096
Change in non-cash working capital	26,582	(48,758)
Asset retirement obligations settled	6,662	7,168
Adjusted Funds Flow	$ 745,628	$ 311,506
Net Debt to Adjusted Funds Flow	1.9	5.9

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Adjusted Funds Flow

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Corporate Information And Statement Of IFRS Compliance [Abstract]

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Net Debt To Adjusted Funds Flow

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Payments For Decommissioning, Restoration And Rehabilitation Costs

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The cash flows from (used in) operating activities, which are the principal revenue-producing activities of the entity and other activities that are not investing or financing activities. [Refer: Revenue]

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The increase (decrease) in working capital.

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