| Cover Page | Apr. 27, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Apr. 27, 2021 |
| Entity Registrant Name | Invesco Ltd. |
| Entity Incorporation, State or Country Code | D0 |
| Entity Tax Identification Number | 98-0557567 |
| Entity Address, Address Line One | 1555 Peachtree Street, N.E., |
| Entity Address, Address Line Two | Suite 1800, |
| Entity Address, City or Town | Atlanta, |
| Entity Address, State or Province | GA |
| Entity Address, Postal Zip Code | 30309 |
| City Area Code | 404 |
| Local Phone Number | 892-0896 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Title of 12(b) Security | Common stock, $.20 par value |
| Trading Symbol | IVZ |
| Security Exchange Name | NYSE |
| Entity Central Index Key | 0000914208 |
| Amendment Flag | false |
| Entity File Number | 001-13908 |
