Consolidated Statements Of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 361	$ 509	$ 728	$ 950
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	38	(9)	(97)	(11)
Change in unrealized gains and losses on cash flow hedges	38	11	(53)	47
Change in unrealized gains and losses on available-for-sale securities	0	2	0	8
Other comprehensive income (loss)	76	4	(150)	44
Comprehensive income	$ 437	$ 513	$ 578	$ 994

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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