Interest and Other Expense (Income), Net (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Other Income and Expenses [Abstract]
Interest income	$ (1)	$ (20)	$ (20)	$ (61)
Interest expense from debt and amortization of debt discount and deferred financing costs	27	23	72	68
Unrealized gain on equity investment	(3)	0	(3)	(38)
Other expense (income), net	2	(5)	6	(2)
Interest and other expense (income), net	$ 25	$ (2)	$ 55	$ (33)