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accounting policy developments - Adjusted net income (Details) - CAD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2026 | Jun. 30, 2025 | Jun. 30, 2026 | Jun. 30, 2025
Reconciliation of net income (loss) with possible management-defined performance measure |  |  |  |
Net income (loss) | $ (1,992) | $ (198) | $ (1,793) | $ 210
Income taxes | (162) | 47 | (107) | 154
Common Shares | $ (1,840) | 7 | $ (1,704) | $ 328
Attributable to Common Shares, Per basic share | $ (1.17) |  | $ (1.09) | $ 0.22
Non-controlling interests | $ 10 | $ (252) | $ 18 | $ (272)
IFRS 18 | Proforma |  |  |  |
Reconciliation of net income (loss) with possible management-defined performance measure |  |  |  |
Net income (loss) | (1,830) |  | (1,686) |
Common Shares | $ (1,840) |  | $ (1,704) |
Attributable to Common Shares, Per basic share | $ (1.17) |  | $ (1.09) |
Non-controlling interests | $ 10 |  | $ 18 |
Long-term debt prepayment premium (Note 9) |  |  |  |
Reconciliation of net income (loss) with possible management-defined performance measure |  |  |  |
Net income (loss) | 51 |  | 51 |
Income taxes | (14) |  | (14) |
Common Shares | $ 51 |  | $ 51 |
Attributable to Common Shares, Per basic share | $ 0.03 |  | $ 0.03 |
Adjusted net income | IFRS 18 | Proforma |  |  |  |
Reconciliation of net income (loss) with possible management-defined performance measure |  |  |  |
Net income (loss) | $ 264 |  | $ 628 |
Common Shares | $ 254 |  | $ 610 |
Attributable to Common Shares, Per basic share | $ 0.16 |  | $ 0.39 |
Non-controlling interests | $ 10 |  | $ 18 |
Adjusted net income | Restructuring and other costs (Note 16(a)) | IFRS 18 | Proforma |  |  |  |
Reconciliation of net income (loss) with possible management-defined performance measure |  |  |  |
Net income (loss) | 189 |  | 504 |
Income taxes | (23) |  | (110) |
Common Shares | $ 189 |  | $ 504 |
Attributable to Common Shares, Per basic share | $ 0.12 |  | $ 0.32 |
Adjusted net income | Real estate rationalization-related restructuring impairments included in depreciation (Note 16(a)) | IFRS 18 | Proforma |  |  |  |
Reconciliation of net income (loss) with possible management-defined performance measure |  |  |  |
Net income (loss) |  |  | $ 4 |
Income taxes |  |  | (1) |
Common Shares |  |  | 4 |
Adjusted net income | Impairment of intangible assets and goodwill (Note 18(b)) | IFRS 18 | Proforma |  |  |  |
Reconciliation of net income (loss) with possible management-defined performance measure |  |  |  |
Net income (loss) | $ 2,135 |  | 2,135 |
Income taxes | (219) |  | (219) |
Common Shares | $ 2,135 |  | $ 2,135 |
Attributable to Common Shares, Per basic share | $ 1.36 |  | $ 1.36 |
Adjusted net income | Income-tax related adjustments | IFRS 18 | Proforma |  |  |  |
Reconciliation of net income (loss) with possible management-defined performance measure |  |  |  |
Net income (loss) | $ (25) |  | $ (36) |
Common Shares | $ (25) |  | $ (36) |
Attributable to Common Shares, Per basic share | $ (0.01) |  | $ (0.02) |
Adjusted net income | Income tax on the above adjustments | IFRS 18 | Proforma |  |  |  |
Reconciliation of net income (loss) with possible management-defined performance measure |  |  |  |
Net income (loss) | $ (256) |  | $ (344) |
Common Shares | $ (256) |  | $ (344) |
Attributable to Common Shares, Per basic share | $ (0.17) |  | $ (0.21) |

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