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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - CAD ($) shares in Thousands, $ in Millions | Issued capital | Contributed surplus | Accumulated other comprehensive income | Retained earnings | Total
--- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2019 | $ 25,167 | $ 566 | $ 899 | $ 15,410 | $ 42,042
Beginning balance (in share) at Dec. 31, 2019 |  |  |  |  | 1,531,874
Changes in equity |  |  |  |  |
Net (loss) earnings |  |  |  | (4,319) | $ (4,319)
Foreign currency translation adjustment |  |  | (22) |  | (22)
Actuarial (loss) gain on employee retirement benefit plans, net of income taxes |  |  |  | (196) | (196)
Total comprehensive (loss) income |  |  | (22) | (4,515) | (4,537)
Issued under share option plans | 36 | (7) |  |  | $ 29
Issued under share option plans (in shares) |  |  |  |  | 804
Repurchase of common shares for cancellation | (124) |  |  | (183) | $ (307)
Repurchase of common shares for cancellation (in shares) |  |  |  |  | (7,527)
Change in liability for share purchase commitment | 65 |  |  | 103 | $ 168
Share-based compensation |  | 32 |  |  | 32
Dividends paid on common shares |  |  |  | (1,670) | (1,670)
Ending balance at Dec. 31, 2020 | 25,144 | 591 | 877 | 9,145 | $ 35,757
Ending balance (in share) at Dec. 31, 2020 |  |  |  |  | 1,525,151
Changes in equity |  |  |  |  |
Net (loss) earnings |  |  |  | 4,119 | $ 4,119
Foreign currency translation adjustment |  |  | (63) |  | (63)
Actuarial (loss) gain on employee retirement benefit plans, net of income taxes |  |  |  | 856 | 856
Total comprehensive (loss) income |  |  | (63) | 4,975 | 4,912
Issued under share option plans | 8 |  |  |  | $ 8
Issued under share option plans (in shares) |  |  |  |  | 245
Common shares forfeited (in shares) |  |  |  |  | (186)
Repurchase of common shares for cancellation | (1,382) |  |  | (922) | $ (2,304)
Repurchase of common shares for cancellation (in shares) |  |  |  |  | (83,959)
Change in liability for share purchase commitment | (120) |  |  | (110) | $ (230)
Share-based compensation |  | 21 |  |  | 21
Dividends paid on common shares |  |  |  | (1,550) | (1,550)
Ending balance at Dec. 31, 2021 | $ 23,650 | $ 612 | $ 814 | $ 11,538 | $ 36,614
Ending balance (in share) at Dec. 31, 2021 |  |  |  |  | 1,441,251

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