Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (3,844)	$ 8,107
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax of $13 and $(16)	(333)	(374)
Net change in unrealized gains (losses) on available-for-sale debt securities:
Unrealized gains (losses), net of tax of $30 and $1	(662)	(98)
Reclassification adjustment for losses (gains) included in “Other income (expense), net,” net of tax of $4 and $0	6	(14)
Net unrealized gains (losses) on available-for-sale debt securities	(656)	(112)
Total other comprehensive income (loss)	(989)	(486)
Comprehensive income (loss)	$ (4,833)	$ 7,621