Segment Information and Concentrations - Revenue and Operating Income By Segments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012 segment		Jun. 30, 2011
Segment Reporting Information [Line Items]
Number of Reportable Segments					4
Revenue by segment	$ 1,409		$ 1,272		$ 2,653		$ 2,330
Pension expense	39		53		78		104
Other adjustments	14	[1]	1	[1]	27	[1]	1	[1]
Operating Income (Loss)	101		62		150		82
Acquisiton Related Integration Costs Included In Other Adjustments	4				8
Acquisition Related Amortization Costs Included in Other Adjustments	10				19
Acquisition Related Transaction Costs Included in Other Adjustments			1				1
Reportable Segment [Member]
Segment Reporting Information [Line Items]
Operating income by segment	154		116		255		187
Retail Solutions [Member]
Segment Reporting Information [Line Items]
Revenue by segment	409		451		756		831
Operating income by segment	28		19		30		27
Hospitality [Member]
Segment Reporting Information [Line Items]
Revenue by segment	130	[2]	0	[2]	243	[2]	0	[2]
Operating income by segment	21	[2]	0	[2]	40	[2]	0	[2]
Financial Services [Member]
Segment Reporting Information [Line Items]
Revenue by segment	783		729		1,477		1,321
Operating income by segment	85		77		141		124
Emerging Industries [Member]
Segment Reporting Information [Line Items]
Revenue by segment	87		92		177		178
Operating income by segment	$ 20		$ 20		$ 44		$ 36

[1]

[2] Other adjustments include $4 million and $8 million of acquisition related integration costs for the the the three and six months ended June 30, 2012, respectively; and $10 million and $19 million of acquisition related amortization of intangible assets for the three and six months ended June 30, 2012, respectively. Other adjustments in the three and six months ended June 30, 2011 include $1 million of acquisition related transaction costs