Revenue - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Revenue	$ 70,697	$ 55,838	$ 40,653
US & Canada
Disaggregation of Revenue [Line Items]
Revenue	32,206	25,727	19,065
Europe
Disaggregation of Revenue [Line Items]
Revenue	16,826	13,631	10,126
Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	15,406	11,733	7,921
Rest of World
Disaggregation of Revenue [Line Items]
Revenue	6,259	4,747	3,541
United States
Disaggregation of Revenue [Line Items]
Revenue	30,230	24,100	17,730
Advertising
Disaggregation of Revenue [Line Items]
Revenue	69,655	55,013	39,942
Other revenue
Disaggregation of Revenue [Line Items]
Revenue	$ 1,042	$ 825	$ 711