v3.19.3.a.u2
Goodwill and Intangible Assets - Additional Information (Detail) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Acquired Intangible Assets [Line Items]      
Increased to goodwill $ 130,000,000    
Goodwill 198,000,000 $ 68,000,000  
Accumulated impairment losses 0 0  
Amortization expense 44,000,000 $ 66,000,000 $ 40,000,000
IPR&D [Member]      
Acquired Intangible Assets [Line Items]      
Indefinite-lived intangible assets, impairment in restructuring and other expenses $ 47,000,000