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Share Capital and Warrants - Issued and Outstanding - Common Shares (Details) - Common shares - CAD ($) shares in Thousands, $ in Millions | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2025 | Dec. 31, 2024
Number of Common Shares |  |
Outstanding, Beginning of Year (in shares) | 1,825,038 | 1,871,868
Issued Under Stock Option Plans (in shares) | 1,090 | 5,049
Purchases of common shares under NCIB (in shares) | (60,537) | (55,861)
Issued Upon Exercise of Warrants (in shares) | 738 | 3,982
Outstanding, End of Period (in shares) | 1,766,329 | 1,825,038
Amount |  |
Outstanding, Beginning of Year | $ 15,659 | $ 16,031
Issued Under Stock Option Plans | 15 | 68
Purchase of Common Shares Under NCIB | (519) | (479)
Issued Upon Exercise of Warrants | 7 | 39
Outstanding, End of Period | $ 15,162 | $ 15,659

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- Definition Value of shares issued + References No definition available. + Details
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