Consolidated Statements Of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 544	$ 348	$ 1,561	$ 1,076
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(63)	90	(74)	(7)
Change in unrealized gains and losses on cash flow hedges	14	58	(3)	5
Other comprehensive income (loss)	(49)	148	(77)	(2)
Comprehensive income	$ 495	$ 496	$ 1,484	$ 1,074