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Basis of Presentation - Additional Information (Details)				9 Months Ended
	Aug. 10, 2020 USD ($)	May 28, 2019 USD ($) $ / shares shares	Jun. 29, 2018	Sep. 30, 2020 USD ($) segment	Sep. 30, 2019 USD ($)	Feb. 03, 2020 USD ($) transaction	Oct. 30, 2019
Restructuring Cost and Reserve [Line Items]
Number of operating segments \| segment				2
Shares issued in public offering (in shares) \| shares		24,000,000
Public offering price (in dollars per share) \| $ / shares		$ 17.50
Issuance of common stock		$ 403,000,000		$ 0	$ 405,000,000
Proceeds from divestitures				$ 198,000,000	$ 0
Honda VNBS Product Line \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Restructuring Cost and Reserve [Line Items]
Ownership percentage in joint venture							51.00%
Disposal group, including discontinued operation, consideration						$ 176,000,000
Number of transactions \| transaction						2
Veoneer Nissin Brakes Systems \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Restructuring Cost and Reserve [Line Items]
Disposal group, including discontinued operation, consideration	$ 1
Proceeds from divestitures	$ 22,000,000
4% Convertible Senior Dotes due 2024 \| Convertible Senior Notes
Restructuring Cost and Reserve [Line Items]
Aggregate principal amount of debt		$ 207,000,000
Stated interest rate		4.00%		4.00%
Net proceeds		$ 200,000,000
Over-Allotment Option \| 4% Convertible Senior Dotes due 2024 \| Convertible Senior Notes
Restructuring Cost and Reserve [Line Items]
Aggregate principal amount of debt		$ 27,000,000
Spin-Off \| Autoliv
Restructuring Cost and Reserve [Line Items]
Distribution percentage of outstanding common stock in spinoff transaction			100.00%
Spin off conversion ratio			1
Spin-Off \| Autoliv \| SDR
Restructuring Cost and Reserve [Line Items]
Spin off conversion ratio			1
Spin-Off \| Autoliv \| Common Stock
Restructuring Cost and Reserve [Line Items]
Spin off conversion ratio			1