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	204.4					240.4		240.4	(36.0)
Other comprehensive income/(loss)	(228.7)						(228.7)	(228.7)
Change in noncontrolling interests in consolidated entities, net	(54.1)								(54.1)
Dividends declared - preferred	(118.4)					(118.4)		(118.4)
Dividends declared - common	(214.8)					(214.8)		(214.8)
Common share-based compensation	95.2			95.2				95.2
Vested common shares				(167.0)	167.0
Other common share awards	0.7			(0.6)	1.3			0.7
Purchase of common shares	(34.9)				(34.9)			(34.9)
Ending balance at Jun. 30, 2020	13,967.7	4,010.5	113.2	7,788.4	(3,319.1)	5,825.0	(816.0)	13,602.0	365.7
Beginning balance at Dec. 31, 2019										$ 383.5
Increase (Decrease) in Temporary Equity [Roll Forward]
Net income										(22.4)
Change in noncontrolling interests in consolidated entities, net										(158.3)
Ending balance at Jun. 30, 2020										202.8
Beginning 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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	39.3					99.7		99.7	(60.4)
Other comprehensive income/(loss)	89.5						89.5	89.5
Change in noncontrolling interests in consolidated entities, net	(17.0)								(17.0)
Dividends declared - preferred	(59.2)					(59.2)		(59.2)
Dividends declared - common	(72.1)					(72.1)		(72.1)
Common share-based compensation	47.8			47.8				47.8
Vested common shares				(6.6)	6.6
Other common share awards	0.4			(0.5)	0.9			0.4
Purchase of common shares	(3.4)				(3.4)			(3.4)
Ending balance at Jun. 30, 2020	13,967.7	4,010.5	113.2	7,788.4	(3,319.1)	5,825.0	(816.0)	13,602.0	365.7
Beginning balance at Mar. 31, 2020										176.5
Increase (Decrease) in Temporary Equity [Roll Forward]
Net income										22.7
Change in noncontrolling interests in consolidated entities, net										3.6
Ending balance at Jun. 30, 2020										202.8
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	849.1					754.5		754.5	94.6
Other comprehensive income/(loss)	34.7						34.7	34.7
Change in noncontrolling interests in consolidated entities, net	(23.1)								(23.1)
Dividends declared - preferred	(118.4)					(118.4)		(118.4)
Dividends declared - common	(151.0)					(151.0)		(151.0)
Common share-based compensation	72.8			72.8				72.8
Vested common shares				(219.9)	219.9
Other common share awards	1.2			0.0	1.2			1.2
Purchase of common shares	(47.6)				(47.6)			(47.6)
Ending balance at Jun. 30, 2021	15,426.6	4,010.5	113.2	7,664.3	(3,080.3)	6,570.1	(369.8)	14,908.0	518.6
Beginning balance at Dec. 31, 2020	211.8									211.8
Increase (Decrease) in Temporary Equity [Roll Forward]
Net income										17.6
Change in noncontrolling interests in consolidated entities, net										134.5
Ending balance at Jun. 30, 2021	363.9									363.9
Beginning 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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	479.3					427.5		427.5	51.8
Other comprehensive income/(loss)	37.9						37.9	37.9
Change in noncontrolling interests in consolidated entities, net	(14.9)								(14.9)
Dividends declared - preferred	(59.2)					(59.2)		(59.2)
Dividends declared - common	(78.1)					(78.1)		(78.1)
Common share-based compensation	34.2			34.2				34.2
Vested common shares				(9.5)	9.5
Other common share awards	0.8			0.0	0.8			0.8
Purchase of common shares	(2.9)				(2.9)			(2.9)
Ending balance at Jun. 30, 2021	15,426.6	$ 4,010.5	$ 113.2	$ 7,664.3	$ (3,080.3)	$ 6,570.1	$ (369.8)	$ 14,908.0	$ 518.6
Beginning balance at Mar. 31, 2021										338.3
Increase (Decrease) in Temporary Equity [Roll Forward]
Net income										15.8
Change in noncontrolling interests in consolidated entities, net										9.8
Ending balance at Jun. 30, 2021	$ 363.9									$ 363.9