<SEC-DOCUMENT>0001127602-18-013292.txt : 20180402
<SEC-HEADER>0001127602-18-013292.hdr.sgml : 20180402
<ACCEPTANCE-DATETIME>20180402162219
ACCESSION NUMBER:		0001127602-18-013292
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20180329
FILED AS OF DATE:		20180402
DATE AS OF CHANGE:		20180402

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Norcross Gary
		CENTRAL INDEX KEY:			0001350904

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-16427
		FILM NUMBER:		18729187

	MAIL ADDRESS:	
		STREET 1:		601 RIVERSIDE AVENUE
		CITY:			JACKSONVILLE
		STATE:			FL
		ZIP:			32204

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Fidelity National Information Services, Inc.
		CENTRAL INDEX KEY:			0001136893
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-BUSINESS SERVICES, NEC [7389]
		IRS NUMBER:				371490331
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		601 RIVERSIDE AVENUE
		CITY:			JACKSONVILLE
		STATE:			FL
		ZIP:			32204
		BUSINESS PHONE:		904-438-6365

	MAIL ADDRESS:	
		STREET 1:		601 RIVERSIDE AVENUE
		CITY:			JACKSONVILLE
		STATE:			FL
		ZIP:			32204

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CERTEGY INC
		DATE OF NAME CHANGE:	20010607

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	EQUIFAX PS INC
		DATE OF NAME CHANGE:	20010315
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
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<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
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<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2018-03-29</periodOfReport>

    <issuer>
        <issuerCik>0001136893</issuerCik>
        <issuerName>Fidelity National Information Services, Inc.</issuerName>
        <issuerTradingSymbol>FIS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001350904</rptOwnerCik>
            <rptOwnerName>Norcross Gary</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>601 RIVERSIDE AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>JACKSONVILLE</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>32204</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <officerTitle>President and CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2018-03-29</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>7818</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
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                <sharesOwnedFollowingTransaction>
                    <value>316440.9926</value>
                </sharesOwnedFollowingTransaction>
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            <transactionDate>
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            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>9834</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
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                <transactionAcquiredDisposedCode>
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                    <value>306606.9926</value>
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                <directOrIndirectOwnership>
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                </directOrIndirectOwnership>
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        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
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            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>150656</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
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                <natureOfOwnership>
                    <value>2016 GRAT</value>
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        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
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            <ownershipNature>
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                <natureOfOwnership>
                    <value>2017 GRAT</value>
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        </nonDerivativeHolding>
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    <derivativeTable>
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            <securityTitle>
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            </securityTitle>
            <conversionOrExercisePrice>
                <value>62.92</value>
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            <transactionDate>
                <value>2018-03-29</value>
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            <expirationDate>
                <value>2023-03-29</value>
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                <underlyingSecurityTitle>
                    <value>Common Stock</value>
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                <underlyingSecurityShares>
                    <value>136017</value>
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                    <value>272034</value>
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                <directOrIndirectOwnership>
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        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option (Right to Buy)</value>
            </securityTitle>
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            <transactionDate>
                <value>2018-03-29</value>
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                <transactionFormType>4</transactionFormType>
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                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>157109</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
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                <transactionAcquiredDisposedCode>
                    <value>A</value>
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            <exerciseDate>
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            <expirationDate>
                <value>2024-03-29</value>
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                <underlyingSecurityTitle>
                    <value>Common Stock</value>
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                <underlyingSecurityShares>
                    <value>157109</value>
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                <sharesOwnedFollowingTransaction>
                    <value>157109</value>
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                <directOrIndirectOwnership>
                    <value>D</value>
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        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>96.30</value>
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            <transactionDate>
                <value>2018-03-29</value>
            </transactionDate>
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                <transactionFormType>4</transactionFormType>
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                <transactionShares>
                    <value>202871</value>
                </transactionShares>
                <transactionPricePerShare>
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                </transactionAcquiredDisposedCode>
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            <exerciseDate>
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            <expirationDate>
                <value>2025-03-29</value>
            </expirationDate>
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                <underlyingSecurityTitle>
                    <value>Common Stock</value>
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                <sharesOwnedFollowingTransaction>
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                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
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        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Represents shares to satisfy withholding tax obligation for Restricted Stock vesting.</footnote>
        <footnote id="F2">On March 29, 2016, the reporting person was granted an option to purchase 408,052 shares of common stock. The option vests in three equal installments based on FIS's satisfaction of certain performance criteria for each of the calendar years ending December 31, 2016, 2017 and 2018. Based on FIS's Annual Report on Form 10-K filed on February 23, 2018, the Compensation Committee of FIS determined that the performance criteria for 2017 had been met, resulting in vesting of the option as to 136,017 shares.</footnote>
        <footnote id="F3">On March 29, 2017, the reporting person was granted an option to purchase 471,328 shares of common stock. The option vests in three equal installments based on FIS's satisfaction of certain performance criteria for each of the calendar years ending December 31, 2017, 2018 and 2019. Based on FIS's Annual Report on Form 10-K filed on February 23, 2018, the Compensation Committee of FIS determined that the performance criteria for 2017 had been met, resulting in vesting of the option as to 157,109 shares.</footnote>
        <footnote id="F4">The option vests in three equal annual installments commencing on the first anniversary date of the grant.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Marc M. Mayo, attorney-in-fact</signatureName>
        <signatureDate>2018-04-02</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
