Business Restructuring (Schedule of Restructuring Activity) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 261		$ 261		$ 110
Payments for Restructuring			23	$ 34
Restructuring Reserve, Accrual Adjustment	(8)		11
Business restructuring, net	176	$ 83	173	$ 83
Restructuring Reserve, Translation Adjustment			$ 1
2019 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Business restructuring, net	$ 184