Other Expense, Net - Schedule (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Other Income and Expenses [Abstract]
Non-service related net periodic benefit cost	$ 25	$ 29
Interest income	(4)	(10)
Foreign currency losses, net	11	0
Net loss from asset sales	2	2
Other, net	(17)	11
Nonoperating Income (Expense)	$ 17	$ 32