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, 2026 |
Dec. 31, 2025 |
|
| Number of Common Shares | ||
| Outstanding, Beginning of Year (in shares) | 1,883,400 | 1,825,038 |
| Issued Under the Arrangement, net of Issuance Costs (in shares) | 0 | 143,935 |
| Issued Upon Exercise of Warrants (in shares) | 536 | 2,471 |
| Issued Under Stock Option Plans (in shares) | 4,339 | 1,394 |
| Purchases of common shares under NCIB (in shares) | (71,718) | (89,438) |
| Purchase of Common Shares Under ASPP (in shares) | 0 | 0 |
| Outstanding, End of Period (in shares) | 1,816,557 | 1,883,400 |
| Amount | ||
| Outstanding, Beginning of Year | $ 18,599 | $ 15,659 |
| Shares Issued In Amount Under Arrangement | 0 | 3,667 |
| Issued Upon Exercise of Warrants | 5 | 24 |
| Issued Under Stock Option Plans | 99 | 20 |
| Purchase of Common Shares Under NCIB | (709) | (771) |
| Purchase of Common Shares Under ASPP | (60) | 0 |
| Outstanding, End of Period | $ 17,934 | $ 18,599 |