Condensed Consolidated Statements of Changes in Equity (Unaudited) - USD ($) $ in Millions	Total	Preferred Shares	Common Shares	Additional Paid-in-Capital	Treasury Shares	Retained Earnings	Accumulated Other Comprehensive Income/(Loss)	Total Equity Attributable to Invesco Ltd.	Nonredeemable Noncontrolling Interests in Consolidated Entities	Redeemable Noncontrolling Interests in Consolidated Entities Temporary Equity
Beginning balance at Dec. 31, 2019	$ 14,318.3	$ 4,010.5	$ 113.2	$ 7,860.8	$ (3,452.5)	$ 5,917.8	$ (587.3)	$ 13,862.5	$ 455.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	165.1					140.7		140.7	24.4
Other comprehensive income/(loss)	(318.2)						(318.2)	(318.2)
Change in noncontrolling interests in consolidated entities, net	(37.1)								(37.1)
Dividends declared - preferred	(59.2)					(59.2)		(59.2)
Dividends declared - common	(142.7)					(142.7)		(142.7)
Common share-based compensation	47.4			47.4				47.4
Vested common shares	0.0			(160.4)	160.4			0.0
Other common share awards	0.3			(0.1)	0.4			0.3
Purchase of common shares	(31.5)				(31.5)			(31.5)
Ending balance at Mar. 31, 2020	13,942.4	4,010.5	113.2	7,747.7	(3,323.2)	5,856.6	(905.5)	13,499.3	443.1
Beginning balance at Dec. 31, 2019										$ 383.5
Increase (Decrease) in Temporary Equity [Roll Forward]
Net income										(45.1)
Change in noncontrolling interests in consolidated entities, net										(161.9)
Ending balance at Mar. 31, 2020										176.5
Beginning balance at Dec. 31, 2020	14,808.9	4,010.5	113.2	7,811.4	(3,253.8)	6,085.0	(404.5)	14,361.8	447.1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	369.8					327.0		327.0	42.8
Other comprehensive income/(loss)	(3.2)						(3.2)	(3.2)
Change in noncontrolling interests in consolidated entities, net	(8.2)								(8.2)
Dividends declared - preferred	(59.2)					(59.2)		(59.2)
Dividends declared - common	(72.9)					(72.9)		(72.9)
Common share-based compensation	38.6			38.6				38.6
Vested common shares	0.0			(210.4)	210.4			0.0
Other common share awards	0.4			0.0	0.4			0.4
Purchase of common shares	(44.7)				(44.7)			(44.7)
Ending balance at Mar. 31, 2021	15,029.5	$ 4,010.5	$ 113.2	$ 7,639.6	$ (3,087.7)	$ 6,279.9	$ (407.7)	$ 14,547.8	$ 481.7
Beginning balance at Dec. 31, 2020	211.8									211.8
Increase (Decrease) in Temporary Equity [Roll Forward]
Net income										1.8
Change in noncontrolling interests in consolidated entities, net										124.7
Ending balance at Mar. 31, 2021	$ 338.3									$ 338.3