Intangible assets, goodwill and other (Details) - CAD ($) $ in Millions	Dec. 31, 2025	Jan. 13, 2025	Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Deferred costs	$ 137		$ 118
Intangible assets	120		128
Investments	111		428
Goodwill	100		71
Long-term receivables	6		16
Other long-term assets	49		12
Total intangible assets, goodwill and other	523		773
Investments
Investments accounted for under the equity method	73	$ 320	389
Cost method investments	$ 38		$ 39

Intangible Assets, Net (Including Goodwill) And Other

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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 investment in equity security without readily determinable fair value.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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Amount of investment in equity method investee and investment in and advance to affiliate.

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The noncurrent portion of the receivable other than from customers, that is amounts expected to be collected after one year or the normal operating cycle, if longer.

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Amount of other miscellaneous assets.

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