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Share Capital - Stock Option Activity (Details) shares in Thousands | 12 Months Ended
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Dec. 31, 2023 shares $ / shares | Dec. 31, 2022 shares $ / shares
Share Capital, Reserves And Other Equity Interest [Abstract] |  |
Stock options outstanding - beginning of year (in shares) | shares | 31,150 | 38,327
Stock options granted (in shares) | shares | 7,024 | 7,547
Stock options exercised for common shares (in shares) | shares | (9,822) | (11,605)
Stock options surrendered for cash settlement (in shares) | shares | (218) | (441)
Stock options forfeited (in shares) | shares | (1,929) | (2,678)
Stock options outstanding - end of year (in shares) | shares | 26,205 | 31,150
Stock options exercisable (in shares) | shares | 3,672 | 5,522
Weighted average exercise price, options outstanding - beginning of year (in CAD per share) | $ / shares | $ 42.37 | $ 35.88
Weighted average exercise price, options granted (in CAD per share) | $ / shares | 80.17 | 68.15
Weighted average exercise price, options exercised (in CAD per share) | $ / shares | 37.84 | 38.06
Weighted average exercise price, options surrendered for cash settlement (in CAD per share) | $ / shares | 38.77 | 38.43
Weighted average exercise price, options forfeited (in CAD per share) | $ / shares | 50.86 | 41.43
Weighted average exercise price, options outstanding - beginning of year (in CAD per share) | $ / shares | 53.60 | 42.37
Weighted average exercise price, options exercisable (in CAD per share) | $ / shares | $ 42.14 | $ 37.60

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- Definition The number of share options outstanding in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2023-01-01 -Paragraph 45 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2023-en-r&anchor=para_45_d&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2023-01-01 -Paragraph 45 -Subparagraph b -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2023-en-r&anchor=para_45_b_i&doctype=Standard -URIDate 2023-03-23 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2023-01-01 -Paragraph 45 -Subparagraph b -Clause vi -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2023-en-r&anchor=para_45_b_vi&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The number of share options exercisable in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2023-01-01 -Paragraph 45 -Subparagraph b -Clause vii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2023-en-r&anchor=para_45_b_vii&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The number of share options forfeited in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2023-01-01 -Paragraph 45 -Subparagraph b -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2023-en-r&anchor=para_45_b_iii&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The number of share options granted in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2023-01-01 -Paragraph 45 -Subparagraph b -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2023-en-r&anchor=para_45_b_ii&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The weighted average exercise price of share options exercisable in a share-based payment arrangement. [Refer: Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2023-01-01 -Paragraph 45 -Subparagraph b -Clause vii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2023-en-r&anchor=para_45_b_vii&doctype=Standard -URIDate 2023-03-23 + Details
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