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Business Combinations and Divestitures - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Oct. 27, 2014
Oct. 01, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Sep. 13, 2016
Business Acquisition [Line Items]            
Proceeds from divestiture of business     $ 0 $ 39 $ 0  
EVM            
Business Acquisition [Line Items]            
Preliminary purchase price $ 3,450          
Business acquisition, consideration paid       52    
Business acquisition, adjustment       (2)    
Wireless LAN (WLAN)            
Business Acquisition [Line Items]            
Impairment of other intangibles     0      
Wireless LAN (WLAN) | Divestiture Group            
Business Acquisition [Line Items]            
Divestiture of business disposal price           $ 55
Proceeds from divestiture of business     39      
Non-cash pre-tax charge related to disposal group   $ 62        
Impairment charge – wireless LAN divestiture   (32) $ 0 (32)    
Revenue from sale of assets       106    
Gross profit from sale of assets       $ 47    
Wireless LAN (WLAN) | Divestiture Group | Other Intangibles            
Business Acquisition [Line Items]            
Impairment of other intangibles   $ 30