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Impairment, Restructuring Charges and Other Related Closure Costs - Changes to Restructuring Provisions Recorded on Consolidated Balance Sheets (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Restructuring Cost And Reserve [Line Items]    
Provision, beginning balance $ 35 $ 52
Charges incurred   19
Adjustment for unused provisions (2)  
Amounts paid (21) (33)
Currency translation effect (1) (3)
Provision, ending balance 11 35
Set-top Box Restructuring Plan [Member]    
Restructuring Cost And Reserve [Line Items]    
Provision, beginning balance 34 39
Charges incurred   19
Adjustment for unused provisions (2)  
Amounts paid (20) (22)
Currency translation effect (1) (2)
Provision, ending balance 11 34
Other Restructuring Initiatives [Member]    
Restructuring Cost And Reserve [Line Items]    
Provision, beginning balance 1 13
Amounts paid $ (1) (11)
Currency translation effect   (1)
Provision, ending balance   $ 1