Business Restructuring (Schedule of Restructuring Activity) (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 360		$ 261	$ 360	$ 261	$ 224	$ 110
Business restructuring, net	165		$ 176	172	173
Restructuring Reserve, Accrual Adjustment				26	11
Payments for Restructuring				34	23
Restructuring Reserve, Translation Adjustment				(2)	1
2019 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges, pretax	$ 176
Business restructuring, net		$ 22		$ 198	$ 184