Consolidated Statements of Changes in Equity - 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
Beginning balance at Dec. 31, 2018	$ 8,936.2		$ 98.1	$ 6,334.8	$ (3,003.6)	$ 5,884.5	$ (735.0)	$ 8,578.8	$ 357.4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	697.8					688.3		688.3	9.5
Other comprehensive income/(loss)	147.7						147.7	147.7
Change in noncontrolling interests in consolidated entities, net	88.9								88.9
Issuance of shares	5,463.8	$ 4,010.5	15.1	1,438.2				5,463.8
Dividends declared - preferred	(123.6)					(123.6)		(123.6)
Dividends declared - common	(531.4)					(531.4)		(531.4)
Employee common share plans:
Common share-based compensation	207.5			207.5				207.5
Vested common shares	88.7			(118.3)	207.0			88.7
Other share awards	7.5			(1.4)	8.9			7.5
Purchase of common shares	(664.8)				(664.8)			(664.8)
Ending 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
Beginning balance at Dec. 31, 2018	396.2
Increase (Decrease) in Temporary Equity [Roll Forward]
Net income	40.0
Change in noncontrolling interests in consolidated entities, net	(52.7)
Ending balance at Dec. 31, 2019	383.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	796.3					761.6		761.6	34.7
Other comprehensive income/(loss)	182.8						182.8	182.8
Change in noncontrolling interests in consolidated entities, net	(43.4)								(43.4)
Issuance of shares	0.0	0.0	0.0	0.0				0.0
Dividends declared - preferred	(236.8)					(236.8)		(236.8)
Dividends declared - common	(357.6)					(357.6)		(357.6)
Employee common share plans:
Common share-based compensation	188.5			188.5				188.5
Vested common shares				(227.3)	227.3
Other share awards	7.9			(10.6)	18.5			7.9
Purchase of common shares	(47.1)				(47.1)			(47.1)
Ending 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 Temporary Equity [Roll Forward]
Net income	11.2
Change in noncontrolling interests in consolidated entities, net	(182.9)
Ending balance at Dec. 31, 2020	211.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,931.4					1,629.8		1,629.8	301.6
Other comprehensive income/(loss)	(37.0)						(37.0)	(37.0)
Change in noncontrolling interests in consolidated entities, net	(76.5)								(76.5)
Issuance of shares	0.0	0.0	0.0	0.0				0.0
Dividends declared - preferred	(236.8)					(236.8)		(236.8)
Dividends declared - common	(308.8)					(308.8)		(308.8)
Employee common share plans:
Common share-based compensation	140.1			140.1				140.1
Vested common shares				(263.0)	263.0
Other share awards	7.6			(0.5)	8.1			7.6
Purchase of common shares	(60.9)				(60.9)			(60.9)
Ending balance at Dec. 31, 2021	16,168.0	$ 4,010.5	$ 113.2	$ 7,688.0	$ (3,043.6)	$ 7,169.2	$ (441.5)	$ 15,495.8	$ 672.2
Increase (Decrease) in Temporary Equity [Roll Forward]
Net income	38.0
Change in noncontrolling interests in consolidated entities, net	261.0
Ending balance at Dec. 31, 2021	$ 510.8