Other Financial Statement Details - Other Income (Expense), Net (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Other Income and Expenses [Abstract]
Interest income	$ 17	$ 47	$ 72	$ 144
Interest expense	(58)	(29)	(150)	(78)
Gains (losses) on strategic investments	209	(228)	973	170
Other	(1)	(3)	(15)	(12)
Other income (expense), net	$ 167	$ (213)	$ 880	$ 224