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Financial Risk Management - Summary of Reconciliation of Level 3 Fair Value of Other Financial Asset Investment in Shares and Participations (Parenthetical) (Detail) kr in Millions	12 Months Ended
	Dec. 31, 2023 SEK (kr)
Level 3 [member]
Disclosure of fair value measurement of assets [line items]
Gains (losses) recognised in profit or loss attributable to change in unrealised gains or losses for assets held at end of period, fair value measurement	kr 186

X

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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- Definition

The gains (losses) recognised in profit or loss for assets measured at fair value that are attributable to the change in unrealised gains or losses relating to those assets held at the end of the reporting period. [Refer: At fair value [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 13
-IssueDate 2023-01-01
-Paragraph 93
-Subparagraph f
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2023-en-r&anchor=para_93_f&doctype=Standard
-URIDate 2023-03-23

+ Details

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- Details

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