EARNINGS PER COMMON SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Earnings Per Share [Abstract]
Net income attributable to Invesco Ltd.	$ 132.2	$ 121.0	$ 277.2	$ 318.7
Weighted average common shares outstanding - basic (shares)	457.9	456.5	458.0	458.0
Dilutive effect of non-participating common share-based awards (shares)	0.9	3.0	0.9	2.7
Weighted average common shares outstanding - diluted (shares)	458.8	459.5	458.9	460.7
Earnings per common share:
Basic (usd per share)	$ 0.29	$ 0.27	$ 0.61	$ 0.70
Diluted (usd per share)	$ 0.29	$ 0.26	$ 0.60	$ 0.69