Goodwill and Purchased Intangible Assets - Schedule of Goodwill (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014	Dec. 31, 2013
Goodwill [Roll Forward]
Goodwill	$ 1,542	$ 2,781
Accumulated Impairment Losses	(8)		(8)
Additions	1,244
Impairment	0
Other	(5)
Total	2,773		1,534
Financial Services [Member]
Goodwill [Roll Forward]
Goodwill	255	1,496
Accumulated Impairment Losses	0		0
Additions	1,244
Impairment	0
Other	(3)
Total	1,496		255
Retail Solutions [Member]
Goodwill [Roll Forward]
Goodwill	581	581
Accumulated Impairment Losses	(3)		(3)
Additions	0
Impairment	0
Other	0
Total	578		578
Hospitality and Specialty Retail [Member]
Goodwill [Roll Forward]
Goodwill	676	674
Accumulated Impairment Losses	0		0
Additions	0
Impairment	0
Other	(2)
Total	674		676
Entertainment [Member]
Goodwill [Roll Forward]
Goodwill	5	5
Accumulated Impairment Losses	(5)		(5)
Additions	0
Impairment	0
Other	0
Total	0		0
Emerging Industries [Member]
Goodwill [Roll Forward]
Goodwill	25	25
Accumulated Impairment Losses	0		0
Additions	0
Impairment	0
Other	0
Total	$ 25		$ 25
Maximum [Member] | Customer Relationships [Member]
Goodwill [Line Items]
Finite-Lived Intangible Asset, Useful Life	20 years
Maximum [Member] | Intellectual property [Member]
Goodwill [Line Items]
Finite-Lived Intangible Asset, Useful Life	7 years
Maximum [Member] | Tradenames [Member]
Goodwill [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years
Maximum [Member] | Non-compete arrangements [Member]
Goodwill [Line Items]
Finite-Lived Intangible Asset, Useful Life	5 years
Minimum [Member] | Customer Relationships [Member]
Goodwill [Line Items]
Finite-Lived Intangible Asset, Useful Life	1 year
Minimum [Member] | Intellectual property [Member]
Goodwill [Line Items]
Finite-Lived Intangible Asset, Useful Life	2 years
Minimum [Member] | Tradenames [Member]
Goodwill [Line Items]
Finite-Lived Intangible Asset, Useful Life	2 years
Minimum [Member] | Non-compete arrangements [Member]
Goodwill [Line Items]
Finite-Lived Intangible Asset, Useful Life	2 years