Other Assets (Details 1) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 3,024	$ 3,198
Acquisitions	0	0
Dispositions	0	(102)
Other, including foreign currency translation	(275)	(72)
Goodwill, Ending Balance	2,749	3,024
U S Card Services [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	174	174
Acquisitions	0	0
Dispositions	0	0
Other, including foreign currency translation	0	0
Goodwill, Ending Balance	174	174
International Card Services [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	982	1,052
Acquisitions	0	0
Dispositions	0	0
Other, including foreign currency translation	(53)	(70)
Goodwill, Ending Balance	929	982
Global Commercial Services [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	1,441	1,543
Acquisitions	0	0
Dispositions	0	(102)
Other, including foreign currency translation	0	0
Goodwill, Ending Balance	1,441	1,441
Global Network And Merchant Services [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	160	160
Acquisitions	0	0
Dispositions	0	0
Other, including foreign currency translation	0	0
Goodwill, Ending Balance	160	160
Corporate and Other [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	267	269
Acquisitions	0	0
Dispositions	0	0
Other, including foreign currency translation	(222)	(2)
Goodwill, Ending Balance	$ 45	$ 267