Interest and Other Expense (Income), Net (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Other Income and Expenses [Abstract]
Interest income	$ (2)	$ (19)	$ (18)	$ (41)
Interest expense from debt and amortization of debt discount and deferred financing costs	23	23	45	46
Unrealized gain on equity investment	0	(38)	0	(38)
Other expense (income), net	1	0	3	2
Interest and other expense (income), net	$ 22	$ (34)	$ 30	$ (31)