Accumulated Other Comprehensive Income - Reclassifications out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of net revenues	$ (656)	$ (530)	$ (1,731)	$ (1,580)
Total, from continuing operations before income taxes	774	266	2,311	1,255
Provision for income taxes	(153)	(56)	(550)	(208)
Net income	664	310	4,822	1,230
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income	5	15	18	42
Reclassification out of Accumulated Other Comprehensive Income | Gains (losses) on cash flow hedges - foreign exchange contracts | Foreign Exchange Contract
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net Revenues	6	19	23	52
Cost of net revenues	0	0	0	1
Total, from continuing operations before income taxes	6	19	23	53
Provision for income taxes	(1)	(4)	(5)	(11)
Net income	$ 5	$ 15	$ 18	$ 42