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Relationship with Former Parent and Related Entities - Narrative (Details) - USD ($) $ in Millions		12 Months Ended
	Jul. 01, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Jun. 29, 2018
Related Party Transaction [Line Items]
Related party purchases		$ 1	$ 16	$ 22
Cash and cash equivalents		758	859		$ 1,000
Zenutiy A B \| Zenuity, Inc \| IP
Related Party Transaction [Line Items]
Intellectual property acquired, consideration	$ 114
Affiliated Entity \| Autoliv Nissin Brakes Systems
Related Party Transaction [Line Items]
Expenses, related party		1	5	7
Affiliated Entity \| Autoliv
Related Party Transaction [Line Items]
Revenue from related parties		70	101	121
Affiliated Entity \| Autoliv \| Engineering Services
Related Party Transaction [Line Items]
Revenue from related parties		2	2	1
Related party costs		$ 1	$ 1	$ 1
Veoneer Nissin Brakes Systems
Related Party Transaction [Line Items]
Majority ownership percentage		51.00%
VNBS \| Nissin Kogyo
Related Party Transaction [Line Items]
Minority ownership percentage		49.00%