UNAUDITED 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
Other comprehensive income (loss), net of tax
Net (loss) income	$ 122	$ 979	$ (577)	$ 1,744
Foreign currency translation adjustments, net of tax	32	(16)	(45)	(28)
Net unrealized gains (losses) on available-for-sale securities, net of tax	77	(45)	3	114
Total other comprehensive income (loss), net of tax	109	(61)	(42)	86
Comprehensive income (loss)	$ 231	$ 918	$ (619)	$ 1,830