Business Restructuring (Schedule of Restructuring Activity) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning Balance			$ 293	$ 224
Business restructuring, net	$ (21)	$ 165	(21)	172
Restructuring Reserve, Accrual Adjustment			23	26
Payments for Restructuring			48	34
Restructuring Reserve, Translation Adjustment			(8)	(2)
Restructuring Reserve, Ending Balance	$ 216	$ 360	216	360
Newly Approved Restructuring Actions
Restructuring Reserve [Roll Forward]
Business restructuring, net			$ 2	$ 198