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Stock Incentive Plan - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Estimated target performance level     100.00%  
RSUs and PSs        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Stock-based compensation expense $ 2.3 $ 2.6 $ 6.9 $ 7.4
Spin-off        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Conversion of stock description     The conversion that occurred on the Distribution Date was based on the following:  Stock Option (SOs) - A number of SOs comprising 50% of the value of the outstanding SOs calculated immediately prior to the spin-off continued to be applicable to Autoliv common stock. A number of SOs comprising the remaining 50% percent of the pre spin-off value were replaced with options to acquire shares of Veoneer common stock. Certain exceptions applied.  Restricted Stock Units (RSUs) - A number of RSUs comprising 50% of the value of the outstanding RSUs calculated immediately prior to the spin-off continued to be applicable to Autoliv common stock. A number of RSUs comprising the remaining 50% of the pre spin-off value were replaced with RSUs with underlying Veoneer common stock. Certain exceptions applied.  Performance Shares (PS) - Outstanding PSs pre spin-off were converted to time-based RSUs and shall be treated in the same manner as other outstanding RSUs (as described above) on the Distribution Date. The number of outstanding PSs pre spin-off were converted based on pro-ration of performance period such as: 1) The level of actual achievement of performance goals for each outstanding PS for the period between the first day of the performance period and December 31, 2017 (the “Performance Measurement Date”), referred to as “Level of Performance-to-Date” and; 1) The greater of the Level of Performance-to-Date and estimated target performance level (i.e., 100%) for the period between the Performance Measurement Date and the last day of the performance period. In each case above, the conversion was intended to generally preserve the intrinsic value of the original award determined as of the distribution date of Veoneer. The number of converted RSUs and SOs for Autoliv and Veoneer was based on the average of Autoliv closing stock prices for the last 5 days prior to the spin-off and the average of closing stock prices of Autoliv and Veoneer, respectively, for the first 5 days after the spin-off.  
Spin-off | Common stock        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Percentage of stock option continue to be applicable to the entity     50.00%  
Percentage of RSUs prior to spinoff continue to applicable to the entity     50.00%  
Spin-off | Common stock | Veoneer, Inc.        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Percentage of stock option and replaced with stock option of the spun entity     50.00%  
Percentage of RSUs prior to spinoff and replaced with RSUs of the spun entity     50.00%