Acquisitions (Pro forma Revenue) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Total processing and services revenues	$ 9,149	$ 9,223
SunGard [Member]
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Total processing and services revenues	9,139	8,986
Net earnings (loss) from continuing operations attributable to FIS common stockholders	$ 389	$ (35)
Pro forma earnings (loss) per share - basic from continuing operations attributable to FIS common stockholders (in dollars per share)	$ 1.19	$ (0.11)
Pro forma earnings (loss) per share - diluted from continuing operations attributable to FIS common stockholders (in dollars per share)	$ 1.17	$ (0.11)

Per basic share amount of pro forma income from continuing operations, after tax, as if the business combination had been completed at the beginning of a period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)-(3)
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463

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Per diluted share amount of pro forma income from continuing operations, after tax, as if the business combination had been completed at the beginning of a period.

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