Supplemental Financial Statement Information (Components of Other Income (Expense), Net) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Balance Sheet Components Disclosure [Abstract]
Interest income	$ 1,865	$ 2,427	$ 1,878
Interest expense	(135)	(100)	(114)
Foreign currency exchange gain (loss), net	(344)	103	(80)
Gain (loss) on debt securities, net	725	149	1,190
Gain (loss) on equity securities, net	5,592	2,649	5,460
Performance fees	(609)	(326)	(1,203)
Income (loss) and impairment from equity method investments, net	401	390	(120)
Other	(637)	102	378
Other income (expense), net	6,858	5,394	7,389
Interest capitalized	218	$ 167	92
Unrealized gain on reclassification of securities			$ 1,300
Hedging loss	$ 902