New Accounting Standards (Policies)	6 Months Ended
Jun. 30, 2025
Accounting Policies [Abstract]
New Accounting Standards	Changes to U.S. GAAP are established by the Financial Accounting Standards Board (“FASB”) in the form of Accounting Standards Updates (“ASUs”) to the FASB’s Accounting Standards Codification (“ASC”). Adoption of new accounting standards In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280), Improvements to Reportable Segment Disclosures, which improve reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. The amendments in this update require that a public entity make additional disclosures related to segments if it has them. A public entity that has a single reportable segment is required to provide all the disclosures mandated by the amendments in this update and all existing segment disclosures in Topic 280. The amendments in this update will be effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted. The amendments in this update should be applied retrospectively to all prior periods presented in the financial statements. The Company adopted ASU 2023-07 in the fourth quarter of 2024. The adoption of this guidance resulted in incremental disclosures in the Company’s financial statements. See Note 11. Segment Information. Accounting standards issued but not yet adopted In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740), Improvements to Income Tax Disclosures, to enhance the transparency and decision usefulness of income tax disclosures as well as improve the effectiveness of income tax disclosures. The amendments in this update require that public business entities on an annual basis (1) disclose specific categories in the rate reconciliation and (2) provide additional information for reconciling items that meet a quantitative threshold. The amendments in this update also require that all entities disclose on an annual basis certain detailed information about income taxes paid. The amendments in this update related to the rate reconciliation and income taxes paid disclosures improve the transparency of income tax disclosures by requiring (1) consistent categories and greater disaggregation of information in the rate reconciliation and (2) income taxes paid disaggregated by jurisdiction. The amendments allow investors to better assess, in their capital allocation decisions, how an entity’s worldwide operations and related tax risks and tax planning and operational opportunities affect its income tax rate and prospects for future cash flows. The amendments in this update are effective for annual periods beginning after December 15, 2024. Early adoption is permitted. The amendments in this update should be applied on a prospective basis. Retrospective application is permitted. The Company has concluded that ASU 2023-09 will significantly increase the income tax disclosures to its financial statements. The Company will adopt the amendments in this update prospectively upon the effective date. In November 2024, the FASB issued ASU 2024-03, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40), Disaggregation of Income Statement Expenses, to improve financial reporting by requiring additional information about specific expense categories in the notes to the financial statements at interim and annual reporting periods. The amendments in ASU 2024-03 do not change or remove current expense disclosure requirements. The amendments require that at each interim and annual reporting period an entity should disclose the amounts of (a) purchase of inventory, (b) employee compensation, (c) depreciation and (d) intangible asset amortization included in each relevant expense caption. The amendments in ASU 2024-03 are effective for annual reporting periods beginning after December 1, 2026 and interim reporting periods beginning after December 15, 2027. Early adoption is permitted. The amendments in ASU 2024-03 should be applied either (1) prospectively to financial statements issued for reporting periods after the effective date of ASU 2024-03 or (2) retrospectively to any or all periods presented in the financial statements. The Company is currently assessing the impact that ASU 2024-03 will have on its financial statements and will adopt the amendments in this update prospectively upon the effective date.
Contingent Liabilities	Autoliv’s warranty reserves are based upon the Company’s best estimates of amounts necessary to settle future and existing claims. The Company regularly evaluates the adequacy of these reserves and adjusts them when appropriate. However, the final amounts actually due related to these matters could differ materially from the Company’s recorded estimates.

New Accounting Standards (Policies)

6 Months Ended

Jun. 30, 2025

Changes to U.S. GAAP are established by the Financial Accounting Standards Board (“FASB”) in the form of Accounting Standards Updates (“ASUs”) to the FASB’s Accounting Standards Codification (“ASC”).

Adoption of new accounting standards

In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280), Improvements to Reportable Segment Disclosures, which improve reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. The amendments in this update require that a public entity make additional disclosures related to segments if it has them. A public entity that has a single reportable segment is required to provide all the disclosures mandated by the amendments in this update and all existing segment disclosures in Topic 280. The amendments in this update will be effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted. The amendments in this update should be applied retrospectively to all prior periods presented in the financial statements. The Company adopted ASU 2023-07 in the fourth quarter of 2024. The adoption of this guidance resulted in incremental disclosures in the Company’s financial statements. See Note 11. Segment Information.

Accounting standards issued but not yet adopted

In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740), Improvements to Income Tax Disclosures, to enhance the transparency and decision usefulness of income tax disclosures as well as improve the effectiveness of income tax disclosures. The amendments in this update require that public business entities on an annual basis (1) disclose specific categories in the rate reconciliation and (2) provide additional information for reconciling items that meet a quantitative threshold. The amendments in this update also require that all entities disclose on an annual basis certain detailed information about income taxes paid. The amendments in this update related to the rate reconciliation and income taxes paid disclosures improve the transparency of income tax disclosures by requiring (1) consistent categories and greater disaggregation of information in the rate reconciliation and (2) income taxes paid disaggregated by jurisdiction. The amendments allow investors to better assess, in their capital allocation decisions, how an entity’s worldwide operations and related tax risks and tax planning and operational opportunities affect its income tax rate and prospects for future cash flows. The amendments in this update are effective for annual periods beginning after December 15, 2024. Early adoption is permitted. The amendments in this update should be applied on a prospective basis. Retrospective application is permitted. The Company has concluded that ASU 2023-09 will significantly increase the income tax disclosures to its financial statements. The Company will adopt the amendments in this update prospectively upon the effective date.

In November 2024, the FASB issued ASU 2024-03, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40), Disaggregation of Income Statement Expenses, to improve financial reporting by requiring additional information about specific expense categories in the notes to the financial statements at interim and annual reporting periods. The amendments in ASU 2024-03 do not change or remove current expense disclosure requirements. The amendments require that at each interim and annual reporting period an entity should disclose the amounts of (a) purchase of inventory, (b) employee compensation, (c) depreciation and (d) intangible asset amortization included in each relevant expense caption. The amendments in ASU 2024-03 are effective for annual reporting periods beginning after December 1, 2026 and interim reporting periods beginning after December 15, 2027. Early adoption is permitted. The amendments in ASU 2024-03 should be applied either (1) prospectively to financial statements issued for reporting periods after the effective date of ASU 2024-03 or (2) retrospectively to any or all periods presented in the financial statements. The Company is currently assessing the impact that ASU 2024-03 will have on its financial statements and will adopt the amendments in this update prospectively upon the effective date.

Contingent Liabilities

Autoliv’s warranty reserves are based upon the Company’s best estimates of amounts necessary to settle future and existing claims. The Company regularly evaluates the adequacy of these reserves and adjusts them when appropriate. However, the final amounts actually due related to these matters could differ materially from the Company’s recorded estimates.