Other Assets (Details 1) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 3,315	$ 3,072
Acquisitions	494	255
Dispositions	0	0
Other	43	(12)
Goodwill, ending balance	3,852	3,315
Global Consumer Services Group [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	889	707
Acquisitions	0	189
Dispositions	0	0
Other	25	(7)
Goodwill, ending balance	914	889
Global Commercial Services [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	1,781	1,718
Acquisitions	442	66
Dispositions	0	0
Other	11	(3)
Goodwill, ending balance	2,234	1,781
Global Merchant and Network Services [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	645	647
Acquisitions	52	0
Dispositions	0	0
Other	7	(2)
Goodwill, ending balance	$ 704	$ 645