<SEC-DOCUMENT>0001209191-20-049338.txt : 20200903
<SEC-HEADER>0001209191-20-049338.hdr.sgml : 20200903
<ACCEPTANCE-DATETIME>20200903140701
ACCESSION NUMBER:		0001209191-20-049338
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20200902
FILED AS OF DATE:		20200903
DATE AS OF CHANGE:		20200903

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Robbins Paige K
		CENTRAL INDEX KEY:			0001688983

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-05684
		FILM NUMBER:		201158948

	MAIL ADDRESS:	
		STREET 1:		100 GRAINGER PARKWAY
		CITY:			LAKE FOREST
		STATE:			IL
		ZIP:			60045

	FORMER NAME:	
		FORMER CONFORMED NAME:	Robbins Paige
		DATE OF NAME CHANGE:	20161101

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			W.W. GRAINGER, INC.
		CENTRAL INDEX KEY:			0000277135
		STANDARD INDUSTRIAL CLASSIFICATION:	WHOLESALE-DURABLE GOODS [5000]
		IRS NUMBER:				361150280
		STATE OF INCORPORATION:			IL
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		100 GRAINGER PARKWAY
		CITY:			LAKE FOREST
		STATE:			IL
		ZIP:			60045-5201
		BUSINESS PHONE:		847-535-1000

	MAIL ADDRESS:	
		STREET 1:		100 GRAINGER PARKWAY
		CITY:			LAKE FOREST
		STATE:			IL
		ZIP:			60045

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	GRAINGER W W INC
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
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        <issuerName>W.W. GRAINGER, INC.</issuerName>
        <issuerTradingSymbol>GWW</issuerTradingSymbol>
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            <rptOwnerStreet2></rptOwnerStreet2>
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            <rptOwnerZipCode>60045</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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            <isOfficer>1</isOfficer>
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            <officerTitle>Sr. VP</officerTitle>
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                <sharesOwnedFollowingTransaction>
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        <nonDerivativeTransaction>
            <securityTitle>
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            <transactionDate>
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                <footnoteId id="F1"/>
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            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>300</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>369.3333</value>
                    <footnoteId id="F5"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
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                <sharesOwnedFollowingTransaction>
                    <value>11193</value>
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                <directOrIndirectOwnership>
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        </nonDerivativeTransaction>
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    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>204.01</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2020-09-02</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
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                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2790</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2015-04-25</value>
            </exerciseDate>
            <expirationDate>
                <value>2022-04-24</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2790</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
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                </directOrIndirectOwnership>
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        </derivativeTransaction>
        <derivativeHolding>
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            </securityTitle>
            <conversionOrExercisePrice>
                <value>245.86</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2016-04-24</value>
            </exerciseDate>
            <expirationDate>
                <value>2023-04-23</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2330</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2330</value>
                </sharesOwnedFollowingTransaction>
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            </conversionOrExercisePrice>
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            </exerciseDate>
            <expirationDate>
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            </expirationDate>
            <underlyingSecurity>
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            <expirationDate>
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            <underlyingSecurity>
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                <underlyingSecurityShares>
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            <expirationDate>
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                <underlyingSecurityShares>
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        <derivativeHolding>
            <securityTitle>
                <value>Stock Option</value>
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            <conversionOrExercisePrice>
                <value>231.20</value>
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            <exerciseDate>
                <value>2020-04-03</value>
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            <expirationDate>
                <value>2027-04-02</value>
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            <underlyingSecurity>
                <underlyingSecurityTitle>
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        <derivativeHolding>
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            <conversionOrExercisePrice>
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            <exerciseDate>
                <value>2021-04-02</value>
            </exerciseDate>
            <expirationDate>
                <value>2028-04-01</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
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                <underlyingSecurityShares>
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                <sharesOwnedFollowingTransaction>
                    <value>3904</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Stock Option</value>
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            <conversionOrExercisePrice>
                <value>311.26</value>
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            <exerciseDate>
                <footnoteId id="F6"/>
            </exerciseDate>
            <expirationDate>
                <value>2029-03-31</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2859</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2859</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
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        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Transaction pursuant to a previously adopted Rule 10b5-1 trading program.</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 $365.93 to $366.89, inclusive. The reporting person undertakes to provide W.W. Grainger, Inc., any security holder of W.W. Grainger, 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 ranges set forth in footnotes (2), (3), (4), and (5) to this Form 4.</footnote>
        <footnote id="F3">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $367.00 to $367.97, inclusive.</footnote>
        <footnote id="F4">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $368.00 to $368.48, inclusive.</footnote>
        <footnote id="F5">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $369.28 to $369.44, inclusive.</footnote>
        <footnote id="F6">The stock option will fully vest in three years, where 1/3 shall vest on April 1, 2020, 1/3 shall vest on April 1, 2021, and the remainder shall vest on April 1, 2022.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Hugo Dubovoy, Jr., as attorney-in-fact</signatureName>
        <signatureDate>2020-09-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
