Goodwill and Purchased Intangible Assets - Schedule of Goodwill (Details) $ in Millions	6 Months Ended
	Jun. 30, 2015 USD ($)
Goodwill [Roll Forward]
Goodwill Gross	$ 2,767
Accumulated Impairment Losses	(7)
Goodwill Net	2,760
Additions	2
Impairment	0
Other	(4)
Goodwill Gross	2,765
Accumulated Impairment Losses	(7)
Goodwill Net	2,758
Financial Services [Member]
Goodwill [Roll Forward]
Goodwill Gross	1,493
Accumulated Impairment Losses	0
Goodwill Net	1,493
Additions	0
Other	1
Goodwill Gross	1,494
Accumulated Impairment Losses	0
Goodwill Net	1,494
Retail Solutions [Member]
Goodwill [Roll Forward]
Goodwill Gross	581
Accumulated Impairment Losses	(7)
Goodwill Net	574
Additions	0
Other	0
Goodwill Gross	581
Accumulated Impairment Losses	(7)
Goodwill Net	574
Hospitality and Specialty Retail [Member]
Goodwill [Roll Forward]
Goodwill Gross	669
Accumulated Impairment Losses	0
Goodwill Net	669
Additions	2
Other	(5)
Goodwill Gross	666
Accumulated Impairment Losses	0
Goodwill Net	666
Emerging Industries [Member]
Goodwill [Roll Forward]
Goodwill Gross	24
Accumulated Impairment Losses	0
Goodwill Net	24
Additions	0
Other	0
Goodwill Gross	24
Accumulated Impairment Losses	0
Goodwill Net	$ 24