CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 604	$ 204	$ 1,688	$ 978
Other comprehensive income (loss):
Foreign currency translation adjustment, net of tax	21	(6)	11	(5)
Unrealized gains (losses) on forward contracts designated as hedges, net of tax	(18)	10	(26)	4
Unrealized gains (losses) on investments, net of tax	(2)	(3)	1	(5)
Total other comprehensive income (loss)	1	1	(14)	(6)
Comprehensive income	$ 605	$ 205	$ 1,674	$ 972