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Consolidated Statements Of Changes In Equity - CAD shares in Thousands, CAD in Millions | Share capital | Contributed surplus | Accumulated other comprehensive income | Non-controlling interests | Retained earnings | Total
--- | --- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2015 | CAD 19,466.0 | CAD 633.0 | CAD 1,265.0 |  | CAD 17,675.0 | CAD 39,039.0
Beginning balance (in share) at Dec. 31, 2015 |  |  |  |  |  | 1,446,013
Changes in equity [abstract] |  |  |  |  |  |
Net earnings |  |  |  | CAD 11.0 | 434.0 | CAD 445.0
Foreign currency translation adjustment |  |  | (258.0) |  |  | (258.0)
Actuarial (loss) gain on employee retirement benefit plans, net of income taxes |  |  |  |  | (24.0) | (24.0)
Total comprehensive (loss) income |  |  | (258.0) | 11.0 | 410.0 | 163.0
Issued under share option plans | 216.0 | (84.0) |  |  |  | CAD 132.0
Issued under share option plans (in shares) |  |  |  |  |  | 3,983
Issued for cash, net of income taxes of $26 (in shares) |  |  |  |  |  | 82,225
Issued for the acquisition of Canadian Oil Sands Limited | 3,154.0 |  |  | 1,172.0 |  | CAD 4,326.0
Issued for the acquisition of Canadian Oil Sands Limited (in shares) |  |  |  |  |  | 98,814
Equity transactions to eliminate non-controlling interest in Canadian Oil Sands Limited | 1,298.0 |  |  | CAD (1,183.0) | (115.0) |
Equity transactions to eliminate non-controlling interest in Canadian Oil Sands Limited (in shares) |  |  |  |  |  | 36,879
Issued under dividend reinvestment plan | 2,808.0 |  |  |  |  | CAD 2,808.0
Share-based compensation |  | 39.0 |  |  |  | 39.0
Dividends paid on common shares |  |  |  |  | (1,877.0) | (1,877.0)
Ending balance at Dec. 31, 2016 | 26,942.0 | 588.0 | 1,007.0 |  | 16,093.0 | CAD 44,630.0
Ending balance (in share) at Dec. 31, 2016 |  |  |  |  |  | 1,667,914
Changes in equity [abstract] |  |  |  |  |  |
Net earnings |  |  |  |  | 4,458.0 | CAD 4,458.0
Foreign currency translation adjustment |  |  | (198.0) |  |  | (198.0)
Actuarial (loss) gain on employee retirement benefit plans, net of income taxes |  |  |  |  | 31.0 | 31.0
Total comprehensive (loss) income |  |  | (198.0) |  | 4,489.0 | 4,291.0
Issued under share option plans | 297.0 | (69.0) |  |  |  | CAD 228.0
Issued under share option plans (in shares) |  |  |  |  |  | 6,223
Issued for cash, net of income taxes of $26 | (536.0) |  |  |  | (877.0) | CAD (1,413.0)
Issued for cash, net of income taxes of $26 (in shares) |  |  |  |  |  | (33,154)
Purchase of common shares for cancellation (in shares) |  |  |  |  |  | (33,154)
Change in liability for share purchase commitment | (97.0) |  |  |  | (180.0) | CAD (277.0)
Share-based compensation |  | 48.0 |  |  |  | 48.0
Dividends paid on common shares |  |  |  |  | (2,124.0) | (2,124.0)
Ending balance at Dec. 31, 2017 | CAD 26,606.0 | CAD 567.0 | CAD 809.0 |  | CAD 17,401.0 | CAD 45,383.0
Ending balance (in share) at Dec. 31, 2017 |  |  |  |  |  | 1,640,983

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