Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 5,243	$ 2,625	$ 7,778	$ 6,186
Net change in foreign currency translation adjustments:
Foreign currency translation adjustments, net of tax of $(6), $(8), $(8) and $13	207	7	(668)	(1)
Net change in unrealized gains (losses) on available-for-sale debt securities:
Unrealized gains (losses), net of tax of $(11), $(73), $(11) and $(61)	407	44	205	76
Reclassification adjustment for losses (gains) included in “Other income (expense), net,” net of tax of $0, $0, $0 and $0	(6)	(1)	(6)	0
Net unrealized gains (losses) on available-for-sale debt securities	401	43	199	76
Total other comprehensive income (loss)	608	50	(469)	75
Comprehensive income	$ 5,851	$ 2,675	$ 7,309	$ 6,261