Segment Information - Revenue and Operating Income By Segments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014 segment		Jun. 30, 2013
Segment Reporting Information [Line Items]
Number of Reportable Segments					4
Revenue by segment	$ 1,658		$ 1,535		$ 3,176		$ 2,945
Operating income by segment	210		182		365		311
Pension expense	2		9		1		16
Other adjustments	39	[1]	34	[1]	87	[1]	71	[1]
Income from operations	169		139		277		224
Acquisiton Related Costs Included In Other Adjustments	6		14		20		30
Acquisition Related Amortization Costs Included in Other Adjustments	30		17		60		31
Acquisition Related Purchase Price Adjustments	2		3		5		9
Legal Costs for OFAC and FCPA Investigations	1		0		2		1
Financial Services [Member]
Segment Reporting Information [Line Items]
Revenue by segment	900	[2]	782	[2]	1,694	[2]	1,496	[2]
Operating income by segment	137	[2]	95	[2]	240	[2]	152	[2]
Retail Solutions [Member]
Segment Reporting Information [Line Items]
Revenue by segment	503		515		993		1,004
Operating income by segment	48		49		84		90
Hospitality [Member]
Segment Reporting Information [Line Items]
Revenue by segment	170		158		319		289
Operating income by segment	23		27		35		48
Emerging Industries [Member]
Segment Reporting Information [Line Items]
Revenue by segment	85		80		170		156
Operating income by segment	2		11		6		21
Digital Insight [Member]
Segment Reporting Information [Line Items]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	87				163
Segment Operting Income of Acquiree Since Acquisition	$ 27				$ 50

[1] Other adjustments for the three months ended June 30, 2014 include $30 million of acquisition-related amortization of intangible assets, $6 million of acquisition-related costs, $2 million of acquisition-related purchase price adjustments and $1 million of legal costs related to previously disclosed OFAC and FCPA investigations and for the three months ended June 30, 2013 include $17 million of acquisition-related amortization of intangible assets, $14 million of acquisition-related costs, and $3 million of purchase price adjustments. Other adjustments for the six months ended June 30, 2014 include $60 million of acquisition-related amortization of intangible assets, $20 million of acquisition-related costs, $5 million of purchase price adjustments, and $2 million of legal costs related to previously disclosed OFAC and FCPA investigations and for the six months ended June 30, 2013 include $31 million of acquisition-related amortization of intangible assets, $30 million of acquisition-related costs, $9 million of purchase price adjustments, and $1 million of legal costs related to previously disclosed OFAC and FCPA investigations.

[2] For the three months ended June 30, 2014 and from the acquisition date of January 10, 2014 through June 30, 2014, Digital Insight contributed $87 million and $163 million, respectively, in revenue and $27 million and $50 million, respectively, in segment operating income to the Financial Services segment.