Investments in affiliates and joint ventures - Summary of Movement in Investments In Affiliates and Joint Ventures (Details) - CAD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Equity Method Investment, Financial Statement, Reported Amounts [Roll Forward]
Balance, beginning of the year	$ 55,974	$ 46,263
Investments in affiliates and joint ventures	0	2,321
Share of net income	37,053	21,860
Dividends from affiliates and joint ventures	(12,760)	(11,270)
Intercompany eliminations	(4,630)	(3,200)
Balance, end of the year	$ 75,637	$ 55,974

Equity Method Investment, Financial Statement, Reported Amounts [Roll Forward]

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Equity Method Investments, Intercompany Eliminations

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Amount of distribution received from equity method investee for return on investment, classified as operating activities. Excludes distribution for return of investment, classified as investing activities.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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