Basis of Presentation	9 Months Ended
Basis of Presentation	Sep. 30, 2019
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. 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 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 has two operating segments, Electronics and Brake Systems. Electronics includes all electronics resources and expertise, Restraint Control Systems and Active Safety products, and Brake Systems provides brake control and actuation systems. The accompanying unaudited condensed consolidated financial statements for the period 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. Prior to the Spin-Off, Autoliv’s net investment in these operations (Net Former Parent Investment) is shown in lieu of a controlling interest’s equity in the unaudited condensed consolidated financial statements. 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 "condensed consolidated financial statements"). The unaudited condensed consolidated financial statements include the historical operations, assets, and liabilities that were considered to comprise the Veoneer business. The allocations and estimates in the unaudited condensed 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. The accompanying unaudited condensed consolidated financial statements for Veoneer do not include all of the information and notes required by the accounting principles generally accepted in the U.S. (GAAP) for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) and disclosures considered necessary for a fair presentation have been included. For further information, refer to Veoneer’s Audited Consolidated Financial Statements for the year ended December 31, 2018 and corresponding notes in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018 filed with the SEC on February 22, 2019. Certain amounts in the unaudited condensed consolidated financial statements and associated notes may not reconcile due to rounding. All percentages have been calculated using unrounded amounts. Joint Venture with 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 VNBS, referred to as Veoneer Nissin Brake America ("VNBA"), and VNBS transferred or licensed the VNBS technologies necessary to operate the VNBA business to VNBA. VNBA, including the transferred or licensed technologies, is a wholly-owned Veoneer business effective on the closing date, June 28, 2019. VNBS will also provide certain transition services to VNBA. The VNBS operations in Japan and China will remain a part of the joint venture, with Veoneer owning 51% and Nissin Kogyo owning 49% of the joint venture. 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 the nine months ended September 30, 2019, Veoneer received approximately $20 million as debt repayment from VNBS. The agreement between Veoneer and Nissin Kogyo resolved the funding situation previously described by Veoneer in its public filings and allows Veoneer to continue reviewing and evaluating the development priorities and strategic options with respect to its brake systems business. 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 approximately $404 million from the common stock offering and approximately $200 million from the Notes offering, in each case after deducting the underwriting discounts and issuance costs directly attributable to each offering.