Components of Accounts Receivable (Detail) - CAD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Accounts Receivable [Abstract]
Trade	$ 113,933	$ 211,797
Accrued trade	16,769	32,167
Prepaids and other	76,507	66,240
Trade and other current receivables	$ 207,209	$ 310,204

The amount of current trade receivables and current other receivables. [Refer: Current trade receivables; Other current receivables]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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