    <SEC-DOCUMENT>0001193125-23-261702-index.html : 20231024
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    <ACCEPTANCE-DATETIME>20231024163037
    ACCESSION NUMBER:		0001193125-23-261702
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		15
    CONFORMED PERIOD OF REPORT:	20231019
    ITEM INFORMATION:		Entry into a Material Definitive Agreement
    ITEM INFORMATION:		Termination of a Material Definitive Agreement
    ITEM INFORMATION:		Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20231024
    DATE AS OF CHANGE:		20231024

    FILER:

    	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

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-07933
    		FILM NUMBER:		231342998

    	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
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    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>d554372d8k.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: d554372d8k.htm

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    <DOCUMENT>
    <TYPE>EX-10.1
    <SEQUENCE>2
    <FILENAME>d554372dex101.htm
    <DESCRIPTION>EX-10.1
    <TEXT>
    Document 2 - file: d554372dex101.htm

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    <SEQUENCE>3
    <FILENAME>d554372dex102.htm
    <DESCRIPTION>EX-10.2
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    <TYPE>EX-101.SCH
    <SEQUENCE>4
    <FILENAME>aon-20231019.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA
    <TEXT>
    Document 4 - file: aon-20231019.xsd

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    <DOCUMENT>
    <TYPE>EX-101.DEF
    <SEQUENCE>5
    <FILENAME>aon-20231019_def.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE
    <TEXT>
    Document 5 - file: aon-20231019_def.xml

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    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>6
    <FILENAME>aon-20231019_lab.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE
    <TEXT>
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    <TYPE>EX-101.PRE
    <SEQUENCE>7
    <FILENAME>aon-20231019_pre.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE
    <TEXT>
    Document 7 - file: aon-20231019_pre.xml

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    <TYPE>XML
    <SEQUENCE>8
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
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    <TYPE>XML
    <SEQUENCE>9
    <FILENAME>d554372d8k_htm.xml
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    <TEXT>
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    Document 9 - RAW XML: d554372d8k_htm.xml

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    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>10
    <FILENAME>Financial_Report.xlsx
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 10 - file: Financial_Report.xlsx

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    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>11
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    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
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    <TYPE>XML
    <SEQUENCE>12
    <FILENAME>report.css
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    <TEXT>
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    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>13
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 13 - file: FilingSummary.html

    Document 13 - RAW XML: FilingSummary.xml

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    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>15
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 15 - file: MetaLinks.json

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    <TYPE>ZIP
    <SEQUENCE>16
    <FILENAME>0001193125-23-261702-xbrl.zip
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    <TEXT>
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