Document and Entity Information
|
May 29, 2020 |
| Document And Entity Information [Line Items] |
|
| Entity Tax Identification Number |
00-0000000
|
| Amendment Flag |
false
|
| Entity Central Index Key |
0000315293
|
| Document Type |
8-K
|
| Document Period End Date |
May 29, 2020
|
| Entity Registrant Name |
Aon plc
|
| Entity Incorporation State Country Code |
L2
|
| Entity File Number |
1-7933
|
| Entity Address, Address Line One |
Metropolitan Building
|
| Entity Address, Address Line Two |
James Joyce Street
|
| Entity Address, City or Town |
Dublin
|
| Entity Address, Country |
IE
|
| Entity Address, Postal Zip Code |
D01 K0Y85
|
| Country Region |
353
|
| City Area Code |
1
|
| Local Phone Number |
266 6000
|
| Written Communications |
false
|
| Soliciting Material |
false
|
| Pre Commencement Tender Offer |
false
|
| Pre Commencement Issuer Tender Offer |
false
|
| Entity Emerging Growth Company |
false
|
| Class A Ordinary Shares, $0.01 nominal value [Member] |
|
| Document And Entity Information [Line Items] |
|
| Security 12b Title |
Class A Ordinary Shares, $0.01 nominal value
|
| Trading Symbol |
AON
|
| Security Exchange Name |
NYSE
|
| Guarantees of Aon plc’s 2.800% Senior Notes due 2021 [Member] |
|
| Document And Entity Information [Line Items] |
|
| Security 12b Title |
Guarantees of Aon plc’s 2.800% Senior Notes due 2021
|
| Trading Symbol |
AON21
|
| Security Exchange Name |
NYSE
|
| Guarantees of Aon plc’s 4.000% Senior Notes due 2023 [Member] |
|
| Document And Entity Information [Line Items] |
|
| Security 12b Title |
Guarantees of Aon plc’s 4.000% Senior Notes due 2023
|
| Trading Symbol |
AON23
|
| Security Exchange Name |
NYSE
|
| Guarantees of Aon plc’s 3.500% Senior Notes due 2024 [Member] |
|
| Document And Entity Information [Line Items] |
|
| Security 12b Title |
Guarantees of Aon plc’s 3.500% Senior Notes due 2024
|
| Trading Symbol |
AON24
|
| Security Exchange Name |
NYSE
|
| Guarantees of Aon plc’s 3.875% Senior Notes due 2025 [Member] |
|
| Document And Entity Information [Line Items] |
|
| Security 12b Title |
Guarantees of Aon plc’s 3.875% Senior Notes due 2025
|
| Trading Symbol |
AON25
|
| Security Exchange Name |
NYSE
|
| Guarantees of Aon plc’s 2.875% Senior Notes due 2026 [Member] |
|
| Document And Entity Information [Line Items] |
|
| Security 12b Title |
Guarantees of Aon plc’s 2.875% Senior Notes due 2026
|
| Trading Symbol |
AON26
|
| Security Exchange Name |
NYSE
|
| Guarantees of Aon plc’s 4.250% Senior Notes due 2042 [Member] |
|
| Document And Entity Information [Line Items] |
|
| Security 12b Title |
Guarantees of Aon plc’s 4.250% Senior Notes due 2042
|
| Trading Symbol |
AON42
|
| Security Exchange Name |
NYSE
|
| Guarantees of Aon plc’s 4.450% Senior Notes due 2043 [Member] |
|
| Document And Entity Information [Line Items] |
|
| Security 12b Title |
Guarantees of Aon plc’s 4.450% Senior Notes due 2043
|
| Trading Symbol |
AON43
|
| Security Exchange Name |
NYSE
|
| Guarantees of Aon plc’s 4.600% Senior Notes due 2044 [Member] |
|
| Document And Entity Information [Line Items] |
|
| Security 12b Title |
Guarantees of Aon plc’s 4.600% Senior Notes due 2044
|
| Trading Symbol |
AON44
|
| Security Exchange Name |
NYSE
|
| Guarantees of Aon plc’s 4.750% Senior Notes due 2045 [Member] |
|
| Document And Entity Information [Line Items] |
|
| Security 12b Title |
Guarantees of Aon plc’s 4.750% Senior Notes due 2045
|
| Trading Symbol |
AON45
|
| Security Exchange Name |
NYSE
|