CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 387	$ 503	$ 994	$ 1,590
Other comprehensive income (loss):
Foreign currency translation adjustments	(182)	(66)	(111)	(313)
Derivative instrument adjustments and other, net of tax	8	(1)	6	7
Reclassification of (income) loss, net of tax	(4)	2	(8)	18
Net other comprehensive (loss) income	(178)	(65)	(113)	(288)
Comprehensive income	$ 209	$ 438	$ 881	$ 1,302

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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