Financial Risk Management - Summary of Outstanding Customer Finance Credit Exposure (Detail) - SEK (kr) kr in Millions	Dec. 31, 2024	Dec. 31, 2023
Disclosure Of Outstanding Customer Finance [Abstract]
Fair value of customer finance credits	kr 4,522	kr 6,917
Financial guarantees for third-parties	3	4
Accrued interest	5	7
Maximum exposure to credit risk	4,530	6,928
Less third-party risk coverage	(35)	(79)
The Company's risk exposure, less third-party risk coverage	kr 4,495	kr 6,849

The amount that best represents the maximum exposure to credit risk without taking into account any collateral held or other credit enhancements (for example, netting agreements that do not qualify for offset in accordance with IAS 32). [Refer: Credit risk [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2024-01-01
-Paragraph 35K
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35K_a&doctype=Standard
-URIDate 2024-03-27

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant