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Business Combinations - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended 12 Months Ended
Mar. 31, 2016
Mar. 31, 2016
Jun. 30, 2016
Dec. 31, 2015
Business Acquisition [Line Items]        
Inventory fair value step-up adjustments   $ 1.3    
Goodwill     $ 1,894.2 $ 1,666.3
Nissin Kogyo        
Business Acquisition [Line Items]        
Percentage of ownership interest retained by non-controlling owners 49.00% 49.00%    
Autoliv Nissin Brake Systems        
Business Acquisition [Line Items]        
Percentage of ownership interest acquired by the company 51.00% 51.00%    
Consideration transferred in cash $ 264.3      
Inventory fair value step-up adjustments     1.3  
Business combination, net sales     137.0  
Business combination, operating income     0.0  
Acquisition related costs     2.0 $ 3.5
Goodwill $ 221.4 $ 221.4 221.4  
Autoliv Nissin Brake Systems | Customer Contract        
Business Acquisition [Line Items]        
Business combination, intangible assets     $ 64.9  
Intangible assets remaining useful life     7 years  
Intangible assets, amortization method     Straight-line  
Autoliv Nissin Brake Systems | Technology        
Business Acquisition [Line Items]        
Business combination, intangible assets     $ 59.6  
Intangible assets, amortization method     Straight-line  
Intangible assets useful life     10 years