Retirement Plans - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2018	Mar. 31, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017	Apr. 01, 2018
Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Pension expense	$ 1		$ 2		$ 4	$ 5
Benefit plan obligations	6			$ 6	6			$ 0
Defined benefit plan assets transferred Plans (less than)				0
Defined benefit plan expense (less than)				0
Defined benefit pension plan expense (less than)				$ 0
Pension Plans, Defined Benefit | Transferred Veoneer Plans
Defined Benefit Plan Disclosure [Line Items]
Benefit plan obligations								$ 6
Defined benefit plan net periodic benefit cost (less than)		$ 1	1			1
Defined benefit plan assets transferred Plans (less than)	1
Pension Plans, Defined Benefit | Autoliv Sponsored Plans
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan expense and contributions prior to the plans amendment (less than)		$ 1	1			1
Pension Plans, Defined Benefit | Autoliv Sponsored Plans | U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan expense (less than)	$ 1		$ 1		$ 1	$ 1
Postretirement Benefits Other than Pension | Canadian Medical Plan
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plan expense (less than)							$ 1