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Share Capital (Tables) | 12 Months Ended
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Dec. 31, 2020
Share-based payment arrangements [Abstract] |
Summary of Dividends Declared and Recorded | The table below describes the dividends paid in 2020.
Date Declared | Record Date | Payment Date | Dividend per Share $ | Paid $
November 6, 2019 | December 30, 2019 | January 15, 2020 | 0.145 |  | 16.1 |
February 26, 2020 | March 31, 2020 | April 15, 2020 | 0.155 |  | 17.2 |
May 6, 2020 | June 30, 2020 | July 15, 2020 | 0.155 |  | 17.3 |
August 5, 2020 | September 30, 2020 | October 15, 2020 | 0.155 |  | 17.4 |
November 4, 2020 | December 31, 2020 | January 15, 2021 | 0.155 |  | — |
Number of Shares and Weighted Average Exercise Price of Share Options |
| For the year ended December 31, 2020 | For the year ended December 31, 2019
| Shares # | Weighted Average Exercise Price per Share $ | Shares # | Weighted Average Exercise Price per Share $
Share options outstanding, beginning of the year | 4,051,080 |  | 32.17 |  | 4,987,542 |  | 31.11 |
Exercised | (1,840,320) |  | 31.83 |  | (753,583) |  | 25.09 |
Forfeited | (86,960) |  | 32.58 |  | (182,879) |  | 32.41 |
Share options outstanding, end of the year | 2,123,800 |  | 32.45 |  | 4,051,080 |  | 32.17 |
Share options vested, end of the year | 1,816,592 |  | 32.36 |  | 3,023,878 |  | 32.04 |
Options Held by Officers and Employees | The options held by officers and employees at December 31, 2020, were as follows:
Options Outstanding |  | Options Exercisable
Range of Exercise Prices per Share $ | Outstanding # | Weighted Average Remaining Contractual Life in Years | Weighted Average Exercise Price per Share $ |  | Shares Exercisable # | Weighted Average Remaining Contractual Life in Years | Weighted Average Exercise Price per Share $
31.75 - 32.98 | 2,123,800 |  | 1.45 | 32.45 |  |  | 1,816,592 |  | 1.30 | 32.36 |
Summary of the Company's RSUs, PSUs, and DSUs | A summary of the Company’s RSUs, PSUs, and DSUs is as follows:
| December 31, 2020 | December 31, 2019
| RSUs # | PSUs # | DSUs # | RSUs # | PSUs # | DSUs #
Units, beginning of year | 164,704 |  | 875,739 |  | 275,950 |  | — |  | 744,081 |  | 306,459 |
Granted | 142,043 |  | 320,256 |  | 37,147 |  | 166,963 |  | 379,289 |  | 44,806 |
Paid | — |  | (234,966) |  | (149,848) |  | — |  | (198,815) |  | (75,315) |
Forfeited | (17,567) |  | (91,692) |  | — |  | (2,259) |  | (48,816) |  | — |
Units, end of year | 289,180 |  | 869,337 |  | 163,249 |  | 164,704 |  | 875,739 |  | 275,950 |
Units vested, end of year | — |  | — |  | 163,249 |  | — |  | — |  | 275,950 |

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- Definition The disclosure of dividends. Dividends are distributions of profits to holders of equity investments in proportion to their holdings of a particular class of capital. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 10 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_10_e&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The disclosure of the number and weighted average exercise prices of other equity instruments (ie other than share options). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2020-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_45&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The disclosure of the number and weighted average exercise prices of share options. [Refer: Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2020-01-01 -Paragraph 45 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_45_b&doctype=Standard -URIDate 2020-01-01 + Details
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