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Consolidated Statements of Changes in Equity - CAD ($) $ in Millions | Total | Common shares | Preferred shares | Issued capital Common shares | Issued capital Preferred shares | Contributed surplus | Deficit | Deficit Common shares | Deficit Preferred shares | Accumulated other comprehensive income (loss) | [1] | Attributable to shareholders | Attributable to shareholders Common shares | Attributable to shareholders Preferred shares | Attributable to non-controlling interests
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance, beginning of year at Dec. 31, 2022 | $ 1,989 |  |  | $ 2,863 | $ 942 | $ 41 | $ (2,514) |  |  | $ (222) | $ 1,110 |  |  | $ 879
Changes in equity [abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net earnings | 796 |  |  |  |  |  | 695 |  |  |  | 695 |  |  | 101
Other comprehensive income (loss) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net gains on translating net assets of foreign operations, net of hedges and tax | 3 |  |  |  |  |  |  |  |  | 3 | 3 |  |  |
Net gains (losses) on derivatives designated as cash flow hedges, net of tax | 99 |  |  |  |  |  |  |  |  | 99 | 99 |  |  | 0
Net actuarial gains on defined benefits plans, net of tax | (5) |  |  |  |  |  |  |  |  | (5) | (5) |  |  |
Intercompany FVTOCI investments | 0 |  |  |  |  |  |  |  |  | 25 | 25 |  |  | (25)
Total comprehensive income (loss) | 893 |  |  |  |  |  | 695 |  |  | 122 | 817 |  |  | 76
Dividends | (51) | $ (65) | $ (51) |  |  |  |  | $ (65) | $ (51) |  |  | $ (65) | $ (51) |
Shares purchased under normal course issuer bid ("NCIB") | (87) |  |  | (80) |  |  | (7) |  |  |  | (87) |  |  |
Changes in non-controlling interests in TransAlta Renewables (Note 4) | (809) |  |  | 510 |  |  | (625) |  |  | (64) | (179) |  |  | (630)
(Provision) reversal of repurchase of shares under the automatic share purchase plan | (19) |  |  | (19) |  |  |  |  |  |  | (19) |  |  |
Share-based payment plans and stock options exercised | 11 |  |  | 11 |  |  |  |  |  |  | 11 |  |  |
Dividends recognised as distributions to non-controlling interests | (198) |  |  |  |  |  |  |  |  |  |  |  |  | (198)
Balance, end of year at Dec. 31, 2023 | 1,664 |  |  | 3,285 | 942 | 41 | (2,567) |  |  | (164) | 1,537 |  |  | 127
Changes in equity [abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net earnings | 239 |  |  |  |  |  | 229 |  |  |  | 229 |  |  | 10
Other comprehensive income (loss) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net gains on translating net assets of foreign operations, net of hedges and tax | 2 |  |  |  |  |  |  |  |  | 2 | 2 |  |  |
Net gains (losses) on derivatives designated as cash flow hedges, net of tax | 194 |  |  |  |  |  |  |  |  | 194 | 194 |  |  | 0
Net actuarial gains on defined benefits plans, net of tax | 9 |  |  |  |  |  |  |  |  | 9 | 9 |  |  |
Total comprehensive income (loss) | 444 |  |  |  |  |  | 229 |  |  | 205 | 434 |  |  | 10
Dividends | (52) | $ (71) | $ (52) |  |  |  |  | $ (71) | $ (52) |  |  | $ (71) | $ (52) |
Shares purchased under normal course issuer bid ("NCIB") | (143) |  |  | (146) |  |  | 3 |  |  |  | (143) |  |  |
(Provision) reversal of repurchase of shares under the automatic share purchase plan | 19 |  |  | 19 |  |  |  |  |  |  | 19 |  |  |
Share-based payment plans and stock options exercised | 22 |  |  | 21 |  | 1 |  |  |  |  | 22 |  |  |
Dividends recognised as distributions to non-controlling interests | (40) |  |  |  |  |  |  |  |  |  |  |  |  | (40)
Balance, end of year at Dec. 31, 2024 | $ 1,843 |  |  | $ 3,179 | $ 942 | $ 42 | $ (2,458) |  |  | $ 41 | $ 1,746 |  |  | $ 97
[1] | (1)Refer to Note 30 for details on components of and changes in, accumulated other comprehensive income (loss).

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