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The cash inflow associated with collection, whether partial or full, of long-term loans to a related party. Alternate caption: Proceeds from Advances to Affiliates.

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The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.

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Basis of Presentation - Additional Information (Details)			9 Months Ended
	May 28, 2019 USD ($) $ / shares shares	Jun. 29, 2018	Sep. 30, 2019 USD ($) segment	Sep. 30, 2018 USD ($)	Jun. 14, 2019
Restructuring Cost and Reserve [Line Items]
Number of operating segments \| segment			2
Cash contribution to joint venture			$ 20,000,000
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	$ 404,000,000		$ 405,000,000	$ 0
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
Veoneer Nissin Brakes Systems
Restructuring Cost and Reserve [Line Items]
Majority ownership percentage			51.00%		51.00%
Minority ownership percentage			49.00%		49.00%
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