Other Expense (Income), Net (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Other Income and Expenses [Abstract]
Non-service related net periodic benefit cost	$ 3	$ 6
Interest income	0	(4)
Foreign currency losses, net	2	0
Net loss from asset sales	3	2
Deferred compensation	2	(10)
Other, net	(6)	(18)
Total	$ 4	$ (24)