<SEC-DOCUMENT>0001209191-22-011952.txt : 20220222
<SEC-HEADER>0001209191-22-011952.hdr.sgml : 20220222
<ACCEPTANCE-DATETIME>20220222192610
ACCESSION NUMBER:		0001209191-22-011952
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20220217
FILED AS OF DATE:		20220222
DATE AS OF CHANGE:		20220222

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Davies Christa
		CENTRAL INDEX KEY:			0001419356

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-07933
		FILM NUMBER:		22660190

	MAIL ADDRESS:	
		STREET 1:		AON CORPORATE LAW DEPT
		STREET 2:		200 EAST RANDOLPH ST, 8TH FL
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60601

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Aon plc
		CENTRAL INDEX KEY:			0000315293
		STANDARD INDUSTRIAL CLASSIFICATION:	INSURANCE AGENTS BROKERS & SERVICES [6411]
		IRS NUMBER:				981539969
		STATE OF INCORPORATION:			L2
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		METROPOLITAN BUILDING
		STREET 2:		JAMES JOYCE STREET
		CITY:			DUBLIN 1
		STATE:			L2
		ZIP:			D01 K0Y8
		BUSINESS PHONE:		35312666000

	MAIL ADDRESS:	
		STREET 1:		METROPOLITAN BUILDING
		STREET 2:		JAMES JOYCE STREET
		CITY:			DUBLIN 1
		STATE:			L2
		ZIP:			D01 K0Y8

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	AON CORP
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	COMBINED INTERNATIONAL CORP
		DATE OF NAME CHANGE:	19870504
</SEC-HEADER>
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                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2615</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
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            <exerciseDate>
                <footnoteId id="F11"/>
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            <expirationDate>
                <value>2025-02-17</value>
                <footnoteId id="F11"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A Ordinary Shares</value>
                </underlyingSecurityTitle>
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                    <value>2615</value>
                </underlyingSecurityShares>
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                <sharesOwnedFollowingTransaction>
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    <footnotes>
        <footnote id="F1">Represents Class A Ordinary Shares issued upon the settlement of performance share unit awards originally granted approximately three years ago under the fourteenth cycle of the Company's Leadership Performance Program. The number of shares issued was determined by the Organization and Compensation Committee of the Board of Directors on February 17, 2022, based on the Company's performance for the period from January 1, 2019 to December 31, 2021.</footnote>
        <footnote id="F2">Class A Ordinary Shares withheld by the issuer for payment of withholding taxes in connection with the vesting of the award.</footnote>
        <footnote id="F3">The price reported is a weighted average price.  Shares were sold in a series of transactions within the same trading day at prices ranging from $279.43 to $280.40, inclusive.  Full information regarding the number of shares sold at each separate price is available upon request by the Commission staff, the issuer, or a security holder of the issuer.</footnote>
        <footnote id="F4">The transactions reported were effected pursuant to a trading plan meeting the requirements of SEC Rule 10b5-1 entered into on November 23, 2021.</footnote>
        <footnote id="F5">The price reported is a weighted average price.  Shares were sold in a series of transactions within the same trading day at prices ranging from $280.44 to $281.42, inclusive.  Full information regarding the number of shares sold at each separate price is available upon request by the Commission staff, the issuer, or a security holder of the issuer.</footnote>
        <footnote id="F6">The price reported is a weighted average price.  Shares were sold in a series of transactions within the same trading day at prices ranging from $281.46 to $282.41, inclusive.  Full information regarding the number of shares sold at each separate price is available upon request by the Commission staff, the issuer, or a security holder of the issuer.</footnote>
        <footnote id="F7">The price reported is a weighted average price.  Shares were sold in a series of transactions within the same trading day at prices ranging from $282.50 to $283.49, inclusive.  Full information regarding the number of shares sold at each separate price is available upon request by the Commission staff, the issuer, or a security holder of the issuer.</footnote>
        <footnote id="F8">The price reported is a weighted average price.  Shares were sold in a series of transactions within the same trading day at prices ranging from $283.50 to $284.47, inclusive.  Full information regarding the number of shares sold at each separate price is available upon request by the Commission staff, the issuer, or a security holder of the issuer.</footnote>
        <footnote id="F9">The price reported is a weighted average price.  Shares were sold in a series of transactions within the same trading day at prices ranging from $284.58 to $285.15, inclusive.  Full information regarding the number of shares sold at each separate price is available upon request by the Commission staff, the issuer, or a security holder of the issuer.</footnote>
        <footnote id="F10">The restricted share unit award converts to Class A Ordinary Shares on a 1-for-1 basis.  In accordance with Irish law, the reporting person agreed to pay the issuer the nominal value of US$0.01 per share issued to the reporting person.</footnote>
        <footnote id="F11">The restricted share unit award vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan as follows: 33 1/3% of the award vests on each of the first through third anniversary of the date of the grant.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Julie Cho - Julie Cho pursuant to a power of attorney from Christa Davies</signatureName>
        <signatureDate>2022-02-22</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</SEC-DOCUMENT>
