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Equity and Other Comprehensive Income (Loss) - Additional Information (Detail) - kr / shares |  |  | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Major ordinary share transactions [member] |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |
Dividend proposed | kr 1.25 | kr 1.25 | kr 2.50 | kr 2.00 | kr 1.50
Class A shares [member] |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |
Shares quota value |  |  | kr 5.00 |  |
Voting rights of share holders |  |  | one vote per share |  |
Class B shares [member] |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |
Shares quota value |  |  | kr 5.00 |  |
Voting rights of share holders |  |  | one tenth of one vote per share |  |
Treasury shares |  |  | 4,009,306 | (6,043,960) | 19,853,247

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- Definition The amount, per share, of dividends proposed or declared before financial statements were authorised for issue but not recognised as distribution to owners. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 137 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_137_a&doctype=Standard -URIDate 2021-03-24 + Details
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