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Equity (Tables) | 12 Months Ended
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Dec. 31, 2020
Equity [abstract] |
Summary of Class A Common Shares and Class B Subordinate Voting Shares Issued and Outstanding | Class A Common Shares and Class B Subordinate Voting Shares Issued and Outstanding
Shares (in 000’s) |  | Class A Common Shares |  | Class B Subordinate Voting Shares
As at January 1, 2019 |  | 7,768 |  |  | 562,925 |
Class A common shares conversion |  | (3) |  |  | 3 |
Shares issued on options exercised (c) |  | — |  |  | 1,239 |
Acquired and cancelled pursuant to normal course issuer bid (h) |  | — |  |  | (24,639) |
As at December 31, 2019 |  | 7,765 |  |  | 539,528 |
Shares issued on options exercised (c) |  | — |  |  | 145 |
Acquired and cancelled pursuant to normal course issuer bid (h) |  | — |  |  | (16,292) |
As at December 31, 2020 |  | 7,765 |  |  | 523,381 |
Summary of Weighted Average Assumptions | The weighted average fair value of share options granted in the year was estimated at $4.76 per option (2019 – $10.73) at the grant date based on the Black-Scholes option-pricing model using the following assumptions:
|  | 2020 |  | 2019
Weighted average exercise price |  | $ | 14.42 |  |  | $ | 28.62 |
Dividend yield |  | 2.13 | % |  | 1.05 | %
Risk-free interest rate |  | 1.19 | % |  | 1.81 | %
Expected option life |  | 6.1 years |  | 5.9 years
Expected volatility |  | 41 | % |  | 41 | %
Forfeiture rate |  | 1.16 | % |  | 0.55 | %
Summary of Outstanding Share Options | Outstanding share options are as follows:
|  | 2020 |  | 2019
|  | Share Options (in 000’s) |  | Weighted Average Exercise Price |  | Share Options (in 000’s) |  | Weighted Average Exercise Price
Outstanding at beginning of year |  | 20,152 |  |  | $ | 23.02 |  |  | 19,775 |  |  | $ | 21.75 |
Granted |  | 6,314 |  |  | 14.42 |  | 1,940 |  |  | 28.62
Exercised |  | (156) |  |  | 8.33 |  | (1,239) |  |  | 8.17
Forfeited |  | (293) |  |  | 20.97 |  | (110) |  |  | 32.52
Expired |  | (767) |  |  | 35.14 |  | (214) |  |  | 38.24
Outstanding at end of year |  | 25,250 |  |  | $ | 20.61 |  |  | 20,152 |  |  | $ | 23.02 |
Vested and exercisable at end of year |  | 17,368 |  |  | $ | 21.76 |  |  | 16,617 |  |  | $ | 21.32 |
Summary of Information Relating to Share Options Outstanding | Information relating to share options outstanding at December 31, 2020, is as follows:
Outstanding Share Options (in 000’s) |  | Exercise Price Range |  | Weighted Average Remaining Life of Outstanding Options (months)
10,699 |  | $ 5.34 — $ 15.35 |  | 84
4,135 |  | $ 15.36 — $ 24.97 |  | 60
2,127 |  | $ 24.98 — $ 26.79 |  | 36
5,339 |  | $ 26.80 — $ 36.85 |  | 67
2,950 |  | $ 36.86 — $ 58.80 |  | 46
25,250 |  | $ 5.34 — $ 58.80 |  | 68
Summary of Exercise Price Range for Share Options | Information relating to share options outstanding at December 31, 2020, is as follows:
Outstanding Share Options (in 000’s) |  | Exercise Price Range |  | Weighted Average Remaining Life of Outstanding Options (months)
10,699 |  | $ 5.34 — $ 15.35 |  | 84
4,135 |  | $ 15.36 — $ 24.97 |  | 60
2,127 |  | $ 24.98 — $ 26.79 |  | 36
5,339 |  | $ 26.80 — $ 36.85 |  | 67
2,950 |  | $ 36.86 — $ 58.80 |  | 46
25,250 |  | $ 5.34 — $ 58.80 |  | 68
Summary of Outstanding Units | The outstanding Units are summarized in the following table:
(in 000’s) |  | 2020 |  | 2019
|  | Outstanding |  | Vested |  | Outstanding |  | Vested
DSUs |  | 2,555 |  |  | 2,555 |  |  | 2,463 |  |  | 2,463 |
RSUs |  | 1,408 |  |  | 484 |  |  | 892 |  |  | — |
PSUs |  | 1,449 |  |  | — |  |  | 741 |  |  | — |
PDSUs |  | 213 |  |  | 70 |  |  | 177 |  |  | 65 |
|  | 5,625 |  |  | 3,109 |  |  | 4,273 |  |  | 2,528 |
Summary of Accumulated Other Comprehensive Income (Loss) | Accumulated Other Comprehensive Income
(CAD$ in millions) |  | 2020 |  | 2019
Accumulated other comprehensive income – beginning of year |  | $ | 309 |  |  | $ | 584 |
Currency translation differences: |  |  |  |
Unrealized losses on translation of foreign subsidiaries |  | (197) |  |  | (449) |
Foreign exchange differences on debt designated as a hedge of our investment in foreign subsidiaries (net of taxes of $(17) and $(26)) (Note 30(b)) |  | 111 |  |  | 167 |
|  | (86) |  |  | (282) |
Gain on marketable equity and debt securities (net of taxes of $(3) and $(1)) |  | 24 |  |  | 7 |
Remeasurements of retirement benefit plans (net of taxes of $29 and $(31)) |  | (50) |  |  | 74 |
Total other comprehensive income (loss) |  | (112) |  |  | (201) |
Less remeasurements of retirement benefit plans recorded in retained earnings |  | 50 |  |  | (74) |
Accumulated other comprehensive income – end of year |  | $ | 247 |  |  | $ | 309 |
Summary of Basic and Diluted Earnings Per Share | The following table reconciles our basic and diluted earnings (loss) per share:
(CAD$ in millions, except per share data) |  | 2020 |  | 2019
Net basic and diluted profit (loss) attributable to shareholders of the company |  | $ | (864) |  |  | $ | (605) |
Weighted average shares and diluted shares outstanding (000’s) |  | 534,378 |  |  | 559,765 |
Basic earnings (loss) per share |  | $ | (1.62) |  |  | $ | (1.08) |
Diluted earnings (loss) per share |  | $ | (1.62) |  |  | $ | (1.08) |

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