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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, 2021 | $ 2,593 |  |  | $ 2,901 | $ 942 | $ 46 | $ (2,453) |  |  | $ 146 | $ 1,582 |  |  | $ 1,011
Changes in equity [abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net earnings (loss) | 161 |  |  |  |  |  | 50 |  |  |  | 50 |  |  | 111
Other comprehensive income (loss) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net losses on translating net assets of foreign operations, net of hedges and tax | (4) |  |  |  |  |  |  |  |  | (4) | (4) |  |  |
Net gains (losses) on derivatives designated as cash flow hedges, net of tax | (456) |  |  |  |  |  |  |  |  | (456) | (456) |  |  | 0
Net actuarial gains on defined benefits plans, net of tax | 37 |  |  |  |  |  |  |  |  | 37 | 37 |  |  |
Intercompany FVTOCI investments | (1) |  |  |  |  |  |  |  |  | 55 | 55 |  |  | (56)
Total comprehensive income (loss) | (263) |  |  |  |  |  | 50 |  |  | (368) | (318) |  |  | 55
Dividends | (46) | $ (57) | $ (46) |  |  |  |  | $ (57) | $ (46) |  |  | $ (57) | $ (46) |
Shares purchased under NCIB | (54) |  |  | (46) |  |  | (8) |  |  |  | (54) |  |  |
Effect of share-based payment plans | 3 |  |  | 8 |  | (5) |  |  |  |  | 3 |  |  |
Dividends recognised as distributions to non-controlling interests | (187) |  |  |  |  |  |  |  |  |  |  |  |  | (187)
Balance, end of year at Dec. 31, 2022 | 1,989 |  |  | 2,863 | 942 | 41 | (2,514) |  |  | (222) | 1,110 |  |  | 879
Changes in equity [abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net earnings (loss) | 796 |  |  |  |  |  | 695 |  |  |  | 695 |  |  | 101
Other comprehensive income (loss) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net losses 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 NCIB | (87) |  |  | (80) |  |  | (7) |  |  |  | (87) |  |  |
Changes in non-controlling interests in TransAlta Renewables (Note 4) | (809) |  |  | 510 |  |  | (625) |  |  | (64) | (179) |  |  | (630)
Provision for repurchase of shares under the automatic share purchase plan | (19) |  |  | (19) |  |  |  |  |  |  | (19) |  |  |
Effect of share-based payment plans | 11 |  |  | 11 |  | 0 |  |  |  |  | 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
[1] | (1)Refer to Note 29 for details on components of and changes in, accumulated other comprehensive income (loss).

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