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EARNINGS PER SHARE (Details) - CAD ($) $ / shares in Units, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Earnings per share [line items] |  |
Numerator (basic) - Net income for the year | $ 1,734 | $ 849
Denominator - Number of shares (in millions): |  |
Weighted average number of shares outstanding - basic (in shares) | 534,000,000 | 523,000,000
Effect of dilutive securities (in millions): |  |
Employee stock options and restricted share units (in shares) | 1,000,000 | 1,000,000
Weighted average number of shares outstanding - diluted (in shares) | 535,000,000 | 524,000,000
Earnings per share: |  |
Basic (in dollars per share) | $ 3.25 | $ 1.62
Diluted (in dollars per share) | $ 3.20 | $ 1.62
Dilutive effect of securities on earnings per share | $ 20 | $ 2
Share options |  |
Earnings per share: |  |
Number of potential ordinary shares that are antidilutive in period presented (in shares) | 9,513,710 | 8,742,224

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