Basis of Presentation	12 Months Ended
Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation Spin-Off On June 29, 2018 (the “Distribution Date”), Veoneer, Inc. (“Veoneer” or “the Company”) became an independent, publicly-traded company as a result of the distribution by Autoliv, Inc. (“Autoliv” or “Former Parent”) of 100 percent of the outstanding common stock of Veoneer to the stockholders of Autoliv (the “Spin-Off”). Each Autoliv stockholder and holder of Autoliv’s Swedish Depository Receipts (SDRs) of record as of certain specified dates received one share of Veoneer common stock or one Veoneer SDR, respectively, for every one share of Autoliv common stock or Autoliv SDR held as of a certain date. The Spin-Off was completed on June 29, 2018 in a tax free transaction pursuant to Section 355 of the U.S. Internal Revenue Code. On July 2, 2018, Veoneer common stock began regular trading on the New York Stock Exchange (“NYSE”) under the ticker symbol “VNE” and Veoneer SDRs began trading on National Association of Securities Dealers (“NASDAQ”) Stockholm under the symbol “VNE-SDB”. Agreements entered into between Veoneer and Autoliv in connection with the Spin-Off govern the relationship between the parties following the Spin-Off and provide for the allocation of various assets, liabilities, rights and obligations. These agreements also include arrangements for transition services to be provided on a temporary basis between the parties. In advance of the Spin-Off, Autoliv completed a series of internal transactions, in which Autoliv transferred its Electronics business to Veoneer. These transactions are referred to herein as the “internal reorganization”. The internal reorganization was completed on April 1, 2018. The Company had two operating segments, Electronics and Brake Systems. Electronics includes all electronics resources and expertise, Restraint Control Systems and Active Safety products. Brake Systems provides brake control and actuation systems. The Asian business of the Brake Systems segment was sold on February 3, 2020 and the majority of the Brake Systems business in North America was sold on August 10, 2020. The remaining Brake Systems business is no longer a reportable segment due to immateriality. The accompanying consolidated financial statements for the periods prior to the Spin-Off have been prepared from Autoliv’s historical accounting records and are presented on a stand-alone basis as if the operations had been conducted independently from Autoliv. Subsequent to the Spin-Off and the related distribution of shares, Veoneer Common stock, Additional paid-in capital and future income (losses) were reflected in Retained earnings (Accumulated deficit). For periods prior to June 29, 2018, the Company’s financial statements are presented on a combined basis and for the periods subsequent to June 29, 2018, they are presented on a consolidated basis (the financial statements for all periods are referred to herein as "consolidated financial statements"). The audited consolidated financial statements include the historical operations, assets, and liabilities that were considered to comprise the Veoneer business. The allocations and estimates in the audited consolidated financial statements for the periods prior to the Spin-Off are based on assumptions that management of Autoliv and Veoneer believe are reasonable. However, the historical statements of operations, comprehensive loss, balance sheets, and cash flows of Veoneer included herein may not be indicative of what they would have been had Veoneer actually been a stand-alone entity during such periods, nor are they necessarily indicative of Veoneer's future results. Amount in investments in the prior year’s consolidated financial statements have been reclassified into Equity method investment to conform to the current year presentation. Certain amounts in the consolidated financial statements and associated notes may not reconcile due to rounding. All percentages have been calculated using unrounded amounts. Follow-on Offerings On May 28, 2019, the Company completed follow-on public offerings of 24,000,000 shares of common stock and $207 million aggregate principal amount of 4.00% Convertible Senior Notes due 2024 (the “Notes”) (including $27 million aggregate principal amount pursuant to the underwriters’ over-allotment option to purchase additional notes). The public offering price for our common stock offering was $17.50 per share. The Company received net proceeds of $403 million from the common stock offering and $200 million from the Notes offering, in each case after deducting the underwriting discounts and issuance costs directly attributable to each offering. Joint Venture with Nissin-Kogyo Co. Ltd. (“Nissin Kogyo”) On June 14, 2019, the Company signed agreements with Nissin Kogyo, its joint venture partner in Veoneer Nissin Brake Systems("VNBS"), providing for certain structural changes to the joint venture and the funding of VNBS. Pursuant to the agreements, Veoneer acquired Nissin Kogyo’s interests in the US operations of Veoneer Nissin Brake Systems ("VNBS"), referred to as Veoneer Brake Systems ("VBS"), and VNBS transferred or licensed the VNBS technologies necessary to operate the VBS business to VBS. VBS, including the transferred or licensed technologies, was a wholly-owned Veoneer business effective on the closing date, June 28, 2019. VNBS provided certain transition services to VBS. Under the agreement, Nissin Kogyo provided guarantees for certain VNBS commercial loans corresponding to 49% of the funding Veoneer had previously unilaterally provided to VNBS. During 2019, Veoneer received approximately $20 million as debt repayment from VNBS. Divestiture of Veoneer Nissin Brake Systems ("VNBS") On October 30, 2019, Veoneer signed definitive agreements to sell its 51% ownership in Veoneer Nissin Brake Japan ("VNBJ") and Veoneer Nissin Brake China ("VNBZ") entities that comprise VNBS to its joint venture partner Nissin Kogyo, and Honda Motor Co., Ltd. The aggregate purchase price was $176 million. The divestiture of VNBJ and VNBZ was structured as two separate transactions each of which was completed on February 3, 2020, and the VNBS joint venture was terminated. See Note 6 "Divestiture and Held for Sale" for additional information. Divestiture of Veoneer Brake Systems ("VBS") On August 10, 2020 Veoneer signed a definitive agreement to sell the majority of the Brake Systems business in North America to ZF Active Safety US, Inc ("ZF"). The aggregate purchase price was $1. In connection with the transaction, the Company received approximately $22 million from ZF for VBS operational cost reimbursement. See Note 6 "Divestiture and Held for Sale" for additional information.

On June 29, 2018 (the “Distribution Date”), Veoneer, Inc. (“Veoneer” or “the Company”) became an independent, publicly-traded company as a result of the distribution by Autoliv, Inc. (“Autoliv” or “Former Parent”) of 100 percent of the outstanding common stock of Veoneer to the stockholders of Autoliv (the “Spin-Off”). Each Autoliv stockholder and holder of Autoliv’s Swedish Depository Receipts (SDRs) of record as of certain specified dates received one share of Veoneer common stock or one Veoneer SDR, respectively, for every one share of Autoliv common stock or Autoliv SDR held as of a certain date. The Spin-Off was completed on June 29, 2018 in a tax free transaction pursuant to Section 355 of the U.S. Internal Revenue Code.

On July 2, 2018, Veoneer common stock began regular trading on the New York Stock Exchange (“NYSE”) under the ticker symbol “VNE” and Veoneer SDRs began trading on National Association of Securities Dealers (“NASDAQ”) Stockholm under the symbol “VNE-SDB”. Agreements entered into between Veoneer and Autoliv in connection with the Spin-Off govern the relationship between the parties following the Spin-Off and provide for the allocation of various assets, liabilities, rights and obligations. These agreements also include arrangements for transition services to be provided on a temporary basis between the parties.

In advance of the Spin-Off, Autoliv completed a series of internal transactions, in which Autoliv transferred its Electronics business to Veoneer. These transactions are referred to herein as the “internal reorganization”. The internal reorganization was completed on April 1, 2018.

The Company had two operating segments, Electronics and Brake Systems. Electronics includes all electronics resources and expertise, Restraint Control Systems and Active Safety products. Brake Systems provides brake control and actuation systems. The Asian business of the Brake Systems segment was sold on February 3, 2020 and the majority of the Brake Systems business in North America was sold on August 10, 2020. The remaining Brake Systems business is no longer a reportable segment due to immateriality.

The accompanying consolidated financial statements for the periods prior to the Spin-Off have been prepared from Autoliv’s historical accounting records and are presented on a stand-alone basis as if the operations had been conducted independently from Autoliv. Subsequent to the Spin-Off and the related distribution of shares, Veoneer Common stock, Additional paid-in capital and future income (losses) were reflected in Retained earnings (Accumulated deficit). For periods prior to June 29, 2018, the Company’s financial statements are presented on a combined basis and for the periods subsequent to June 29, 2018, they are presented on a consolidated basis (the financial statements for all periods are referred to herein as "consolidated financial statements").

The audited consolidated financial statements include the historical operations, assets, and liabilities that were considered to comprise the Veoneer business. The allocations and estimates in the audited consolidated financial statements for the periods prior to the Spin-Off are based on assumptions that management of Autoliv and Veoneer believe are reasonable. However, the historical statements of operations, comprehensive loss, balance sheets, and cash flows of Veoneer included herein may not be indicative of what they would have been had Veoneer actually been a stand-alone entity during such periods, nor are they necessarily indicative of Veoneer's future results.

Amount in investments in the prior year’s consolidated financial statements have been reclassified into Equity method investment to conform to the current year presentation.

Certain amounts in the consolidated financial statements and associated notes may not reconcile due to rounding. All percentages have been calculated using unrounded amounts.

On May 28, 2019, the Company completed follow-on public offerings of 24,000,000 shares of common stock and $207 million aggregate principal amount of 4.00% Convertible Senior Notes due 2024 (the “Notes”) (including $27 million aggregate principal amount pursuant to the underwriters’ over-allotment option to purchase additional notes). The public offering price for our common stock offering was $17.50 per share. The Company received net proceeds of $403 million from the common stock offering and $200 million from the Notes offering, in each case after deducting the underwriting discounts and issuance costs directly attributable to each offering.

On June 14, 2019, the Company signed agreements with Nissin Kogyo, its joint venture partner in Veoneer Nissin Brake Systems("VNBS"), providing for certain structural changes to the joint venture and the funding of VNBS.

Pursuant to the agreements, Veoneer acquired Nissin Kogyo’s interests in the US operations of Veoneer Nissin Brake Systems ("VNBS"), referred to as Veoneer Brake Systems ("VBS"), and VNBS transferred or licensed the VNBS technologies necessary to operate the VBS business to VBS. VBS, including the transferred or licensed technologies, was a wholly-owned Veoneer business effective on the closing date, June 28, 2019. VNBS provided certain transition services to VBS.

Under the agreement, Nissin Kogyo provided guarantees for certain VNBS commercial loans corresponding to 49% of the funding Veoneer had previously unilaterally provided to VNBS. During 2019, Veoneer received approximately $20 million as debt repayment from VNBS.

On October 30, 2019, Veoneer signed definitive agreements to sell its 51% ownership in Veoneer Nissin Brake Japan ("VNBJ") and Veoneer Nissin Brake China ("VNBZ") entities that comprise VNBS to its joint venture partner Nissin Kogyo, and Honda Motor Co., Ltd. The aggregate purchase price was $176 million. The divestiture of VNBJ and VNBZ was structured as two separate transactions each of which was completed on February 3, 2020, and the VNBS joint venture was terminated. See Note 6 "Divestiture and Held for Sale" for additional information.

On August 10, 2020 Veoneer signed a definitive agreement to sell the majority of the Brake Systems business in North America to ZF Active Safety US, Inc ("ZF"). The aggregate purchase price was $1. In connection with the transaction, the Company received approximately $22 million from ZF for VBS operational cost reimbursement. See Note 6 "Divestiture and Held for Sale" for additional information.