Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 11,588	$ 10,073	$ 3,033
Net change in foreign currency translation adjustments:
Foreign currency translation adjustments, net of tax of $5, $6, and $(5)	78	(538)	533
Reclassification adjustment for foreign currency translation included in “Other operating expense (income), net,” net of tax of $0, $0, and $29	108	0	0
Net foreign currency translation adjustments	(30)	(538)	533
Net change in unrealized gains (losses) on available-for-sale debt securities:
Unrealized gains (losses), net of tax of $5, $0, and $(12)	83	(17)	(39)
Reclassification adjustment for losses (gains) included in “Other income (expense), net,” net of tax of $0, $0, and $0	(4)	8	7
Net unrealized gains (losses) on available-for-sale debt securities	79	(9)	(32)
Total other comprehensive income (loss)	49	(547)	501
Comprehensive income	$ 11,637	$ 9,526	$ 3,534