Equity-accounted investees (Summary of Equity-accounted Investees) (Details) - CAD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Disclosure of significant investments in associates [Line Items]
Investment in equity-accounted investees	$ 2,987,126	$ 3,218,456
Westinghouse Electric Company [Member]
Disclosure of significant investments in associates [Line Items]
Investment in equity-accounted investees	2,671,846	2,931,746
Joint Venture Inkai LLP [Member]
Disclosure of significant investments in associates [Line Items]
Investment in equity-accounted investees	315,280	286,710
Global Laser Enrichment LLC [Member]
Disclosure of significant investments in associates [Line Items]
Investment in equity-accounted investees	$ 0	$ 0

- Definition

The amount of investments accounted for using the equity method. The equity method is a method of accounting whereby the investment is initially recognised at cost and adjusted thereafter for the post-acquisition change in the investor's share of net assets of the investee. The investor's profit or loss includes its share of the profit or loss of the investee. The investor's other comprehensive income includes its share of the other comprehensive income of the investee. [Refer: At cost [member]]

+ References + Details