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Commitments and Contingencies - (Narrative) (Details) $ in Millions					3 Months Ended
	Oct. 13, 2016 patent	Apr. 29, 2015 patent	Apr. 29, 2014 patent	May 28, 2013 patent	Mar. 31, 2017 USD ($) claim
Potential Tax Liability | Pending Litigation | Secretariat of the Federal Revenue Bureau of Brazil
Loss Contingencies [Line Items]
Loss contingency, number of claims pending | claim					9
Loss contingency, value of damages sought					$ 14
Loss contingency, number of potential new claims filed | claim					26
Loss contingency, potential additional claims amount ought					$ 56
Loss contingency, number of total pending and potential pending claims | claim					35
Potential Tax Liability | Pending Litigation | Secretariat of the Federal Revenue Bureau of Brazil | Maximum
Loss Contingencies [Line Items]
Loss contingency, estimate of possible loss					$ 70
DataTreasury Corporation v. Fidelity National Information Services, Inc. et. al
Loss Contingencies [Line Items]
Loss contingency, number of patents allegedly infringed upon | patent		2	2	2
Loss contingency, number of patents found unpatentable | patent	2
SunGard
Loss Contingencies [Line Items]
Business combination, contingent liability					$ 101

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Number of pending claims pertaining to a loss contingency.

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