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Expenses by Nature - Summary of Restructuring Charges by Function (Detail) - SEK (kr) kr in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Expense by Nature [line items]
Total restructuring charges	kr 5,012	kr 6,521	kr 399
Cost of sales [member]
Expense by Nature [line items]
Total restructuring charges	2,046	2,802	195
R&D expenses [member]
Expense by Nature [line items]
Total restructuring charges	2,119	2,431	54
Selling and administrative expenses [member]
Expense by Nature [line items]
Total restructuring charges	kr 847	kr 1,288	kr 150

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose the amount of expenses aggregated according to their nature (for example, depreciation, purchases of materials, transport costs, employee benefits and advertising costs), and not reallocated among functions within the entity.

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- Definition

The amount of expense relating to restructuring. Restructuring is a programme that is planned and controlled by management and materially changes either the scope of a business undertaken by an entity or the manner in which that business is conducted. Such programmes include: (a) the sale or termination of a line of business; (b) closure of business locations in a country or region or the relocation of activities from one country or region to another; (c) changes in management structure; and (d) fundamental reorganisations that have a material effect on the nature and focus of the entity's operations.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-IssueDate 2024-01-01
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