CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 619	$ 505
Other comprehensive income (loss):
Foreign currency translation adjustment, net of tax	(5)	(14)
Unrealized gains (losses) on forward contracts designated as hedges, net of tax	29	1
Unrealized gains (losses) on investments, net of tax	(2)	4
Total other comprehensive income (loss)	22	(9)
Comprehensive income	$ 641	$ 496