v3.20.2
Segment Reporting and Information about Geographic Areas - Schedule of Revenues by Geographic Area (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues $ 6,036 $ 6,350 $ 12,021 $ 10,891
United States [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues 3,090 3,480 5,858 5,810
China [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues 1,400 690 2,300 1,469
Other [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues $ 1,546 $ 2,180 $ 3,863 $ 3,612