Other Income (Expense) - net (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Other Income
Defined benefit plans - non-service credits	$ 80	$ 68
Interest Income	6	0
AFUDC - equity component	5	5
Miscellaneous	6	1
Total Other Income	97	74
Other Expense
Economic foreign currency exchange contracts	33	112
Charitable Contributions	2	4
Miscellaneous	10	1
Total Other Expense	45	117
Other Income (Expense) - net	$ 52	$ (43)