Other Expense, 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]
Restructuring expense	$ 20	$ 14	$ 72	$ 41
Merger, acquisition and divestiture expense	16	4	58	10
Asset impairments	0	0	26	0
Net gain on insurance recovery for property damage	(3)	0	(9)	0
Unfavorable arbitration loss	0	0	0	14
Other income, net	(4)	0	(5)	(2)
Other expense, net	$ 29	$ 18	$ 142	$ 63