Other Financial Data - Schedule of Other Income (Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Other Financial Data [Abstract]
Foreign currency remeasurement	$ (12)	$ 9	$ 25
Disposal of businesses	25	13	(6)
Pension and other postretirement	13	9	1
Equity earnings	4	4	4
Extinguishment of debt	(7)	0	0
Financial instruments	(11)	(34)	(49)
Other income (expense)	$ 12	$ 1	$ (25)