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v3.22.1

Share-based Payment - Number and Weighted Average Exercise Prices ("WAEP") of, and Movements in Share Options (Detail) | 12 Months Ended
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Dec. 31, 2021 shares Associate $ / shares | Dec. 31, 2020 shares Associate $ / shares
Disclosure of terms and conditions of share-based payment arrangement [abstract] |  |
Outstanding at January 1 | shares | 470,000 | 470,000
Cancelled during the year | Associate | (200,000) | 0
Number of share options outstanding | shares | 270,000 | 470,000
Number of share options exercisable | shares | 270,000 | 470,000
Beginning balance | $ 21.11 | $ 21.11
Cancelled during the year | 21.11 | 0
WAEP outstanding | 21.11 | 21.11
WAEP exercisable | $ 21.11 | $ 21.11

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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 2021-01-01 -Paragraph 45 -Subparagraph b -Clause iii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2021-en-r&anchor=para_45_b_iii&doctype=Standard -URIDate 2021-03-24 + Details
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