Other Financial Data - Schedule of Other Income (Expense) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Other (Expense) Income
Foreign currency remeasurement	$ (19)	$ 17	$ 21	$ 17
Financial instruments	13	(20)	(34)	(32)
Pension and other postretirement	4	3	10	12
Equity earnings	1	1	3	3
Extinguishment of debt	0	0	(7)	0
Disposal of businesses	0	1	25	8
Other income (expense)	$ (1)	$ 2	$ 18	$ 8