Financial Risk Management - Summary of Financial Instruments (Parenthetical) (Detail) - SEK (kr) kr in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disclosure of detailed information about financial instruments [abstract]
Cash and cash equivalents	kr 43,885	kr 35,190	kr 38,349	kr 54,050
Cash equivalents	kr 24,263	kr 17,504

The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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