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Consolidated Statements of Changes in Equity - CAD ($) $ in Millions | Total | Issued capital Class A Common Shares | Issued capital Class B Subordinate Voting Shares | Retained earnings | Contributed surplus | Accumulated other comprehensive income | Non-controlling interests
--- | --- | --- | --- | --- | --- | --- | ---
Beginning of year at Dec. 31, 2020 |  |  | $ 6,134 | $ 13,410 | $ 242 | $ 247 | $ 669
Share repurchases (Note 25(h)) |  |  | 0 | 0 |  |  |
Issued on exercise of options |  |  | 67 |  | (17) |  |
Profit for the year attributable to shareholders of the company | $ 2,868 |  |  | 2,868 |  |  |
Dividends paid (Note 25(g)) |  |  |  | (106) |  |  |
Remeasurements of retirement benefit plans | (171) |  |  | (171) |  | (171) |
Share option compensation expense (Note 25(c)) |  |  |  |  | 28 |  |
Other comprehensive income |  |  |  |  |  | 126 |
Profit (loss) for the year attributable to non-controlling interests | 47 |  |  |  |  |  | 47
Other comprehensive income (loss) attributable to non-controlling interests |  |  |  |  |  |  | (4)
Contributions from non-controlling interests |  |  |  |  |  |  | 113
Distributions to non-controlling interests |  |  |  |  |  |  | (57)
End of year at Dec. 31, 2021 | 23,773 | $ 6 | 6,201 | 16,343 | 253 | 202 | 768
Share repurchases (Note 25(h)) |  |  | (374) | (1,018) |  |  |
Issued on exercise of options |  |  | 306 |  | (72) |  |
Profit for the year attributable to shareholders of the company | 3,317 |  |  | 3,317 |  |  |
Dividends paid (Note 25(g)) |  |  |  | (532) |  |  |
Remeasurements of retirement benefit plans | 45 |  |  | 45 |  | 45 |
Share option compensation expense (Note 25(c)) |  |  |  |  | 26 |  |
Other comprehensive income |  |  |  |  |  | 815 |
Profit (loss) for the year attributable to non-controlling interests | (19) |  |  |  |  |  | (19)
Other comprehensive income (loss) attributable to non-controlling interests |  |  |  |  |  |  | 60
Contributions from non-controlling interests |  |  |  |  |  |  | 307
Distributions to non-controlling interests |  |  |  |  |  |  | (78)
End of year at Dec. 31, 2022 | $ 26,511 | $ 6 | $ 6,133 | $ 18,065 | $ 207 | $ 1,062 | $ 1,038

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