Segment and Related Information - Revenue by Geographic Region (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 1,786	$ 1,571
U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	1,108	943
European region
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	405	373
Asia
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	184	169
Rest of the world
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 89	$ 86