Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 807.5	$ 737.8	$ 883.1
Other comprehensive income/(loss), net of tax:
Currency translation differences on investments in foreign subsidiaries	182.7	155.6	(327.1)
Actuarial gain/(loss) related to employee benefit plans	(6.3)	(10.8)	(13.0)
Other comprehensive income/(loss), net of tax	6.4	2.9	(0.5)
Other comprehensive income/(loss)	182.8	147.7	(340.6)
Total comprehensive income/(loss)	990.3	885.5	542.5
Comprehensive (income)/loss attributable to noncontrolling interests in consolidated entities	(45.9)	(49.5)	(0.3)
Dividends on preferred shares	(236.8)	(123.6)	0.0
Comprehensive (loss)/income attributable to Invesco Ltd.	$ 707.6	$ 712.4	$ 542.2