Segment Reporting and Information about Geographic Areas - Schedule of Revenues by Geographic Area (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 53,823	$ 31,536	$ 24,578
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	23,973	15,207	12,653
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	13,844	6,662	2,979
Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 16,006	$ 9,667	$ 8,946