<SEC-DOCUMENT>0001562180-22-000390.txt : 20220111
<SEC-HEADER>0001562180-22-000390.hdr.sgml : 20220111
<ACCEPTANCE-DATETIME>20220111130743
ACCESSION NUMBER:		0001562180-22-000390
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20220107
FILED AS OF DATE:		20220111
DATE AS OF CHANGE:		20220111

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Stengel Scott A
		CENTRAL INDEX KEY:			0001599100

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-03754
		FILM NUMBER:		22523390

	MAIL ADDRESS:	
		STREET 1:		1010 GRAND BLVD
		CITY:			KANSAS CITY
		STATE:			MO
		ZIP:			64106

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Ally Financial Inc.
		CENTRAL INDEX KEY:			0000040729
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		IRS NUMBER:				380572512
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		ALLY DETROIT CENTER
		STREET 2:		500 WOODWARD AVE. FLOOR 10
		CITY:			DETROIT
		STATE:			MI
		ZIP:			48226
		BUSINESS PHONE:		866-710-4623

	MAIL ADDRESS:	
		STREET 1:		ALLY DETROIT CENTER
		STREET 2:		500 WOODWARD AVE. FLOOR 10
		CITY:			DETROIT
		STATE:			MI
		ZIP:			48226

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	GMAC INC.
		DATE OF NAME CHANGE:	20090701

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	GMAC LLC
		DATE OF NAME CHANGE:	20060720

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	GENERAL MOTORS ACCEPTANCE CORP
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primarydocument.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2022-01-07</periodOfReport>

    <notSubjectToSection16>false</notSubjectToSection16>

    <issuer>
        <issuerCik>0000040729</issuerCik>
        <issuerName>Ally Financial Inc.</issuerName>
        <issuerTradingSymbol>ALLY</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001599100</rptOwnerCik>
            <rptOwnerName>Stengel Scott A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>500 WOODWARD AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>DETROIT</rptOwnerCity>
            <rptOwnerState>MI</rptOwnerState>
            <rptOwnerZipCode>48226</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>false</isDirector>
            <isOfficer>true</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
            <officerTitle>General Counsel</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <transactionDate>
                <value>2022-01-07</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1376.00</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>50.0051</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>84017.00</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">The reported transactions were executed pursuant to a sales plan designed to comply with Rule 10b5-1 under the Securities Exchange Act of 1934.</footnote>
        <footnote id="F2">The price reported in Column 4 is a weighted average price.  These shares were sold in multiple transactions at prices ranging from $50.00 to $50.02, inclusive.  The reporting person undertakes to provide to Ally Financial Inc., any security holder of Ally Financial Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Joyce M. Daniels, attorney-in-fact for Mr. Stengel</signatureName>
        <signatureDate>2022-01-11</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
