Consolidated Investment Products (Condensed Consolidating Statement Of Income Line Items Reflecting Impact Of Consolidation Of Investment Products Into The Condensed Consolidated Statements Of Income) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Total operating revenues	$ 1,192.6	$ 1,148.7
Total operating expenses	934.0	874.3
Operating Income (Loss)	258.6	274.4
Equity in earnings of unconsolidated affiliates	17.7	(12.2)
Interest and dividend income	2.9	3.6
Other gains and losses, net	6.2	(4.7)
Other gains/(losses) of CIP, net	28.5	(7.5)
Income before income taxes	289.9	229.7
Income tax provision	(75.7)	(71.9)
Net income	214.2	157.8
(Gains)/losses attributable to noncontrolling interests in consolidated entities, net	(2.2)	3.2
Net income attributable to Invesco Ltd	212.0	161.0
Impact of CIP [Member]
Total operating revenues	(13.2)	(5.5)
Total operating expenses	(1.2)	1.8
Operating Income (Loss)	(12.0)	(7.3)
Equity in earnings of unconsolidated affiliates	1.5	3.5
Interest and dividend income	0.0	(0.1)
Other gains and losses, net	(10.1)	(0.2)
Interest and dividend income of CIP	53.8	44.4
Interest expense of CIP	(36.2)	(27.3)
Other gains/(losses) of CIP, net	10.9	(24.6)
Income before income taxes	7.9	(11.6)
Income tax provision	0.0	0.0
Net income	7.9	(11.6)
(Gains)/losses attributable to noncontrolling interests in consolidated entities, net	(2.2)	3.2
Net income attributable to Invesco Ltd	$ 5.7	$ (8.4)