Goodwill and Other Intangible Assets, net (Movement in Goodwill) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($)
Goodwill [Roll Forward]
Beginning Balance	$ 5,858
Changes due to:
Currency	(574)
Ending Balance	5,284
European Union [Member]
Goodwill [Roll Forward]
Beginning Balance	1,338
Changes due to:
Currency	(53)
Ending Balance	1,285
Eastern Europe [Member]
Goodwill [Roll Forward]
Beginning Balance	300
Changes due to:
Currency	(13)
Ending Balance	287
Middle East & Africa [Member]
Goodwill [Roll Forward]
Beginning Balance	89
Changes due to:
Currency	(19)
Ending Balance	70
South & Southeast Asia [Member]
Goodwill [Roll Forward]
Beginning Balance	2,898
Changes due to:
Currency	(327)
Ending Balance	2,571
East Asia & Australia [Member]
Goodwill [Roll Forward]
Beginning Balance	551
Changes due to:
Currency	(47)
Ending Balance	504
Latin America & Canada [Member]
Goodwill [Roll Forward]
Beginning Balance	682
Changes due to:
Currency	(115)
Ending Balance	$ 567