Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net income	$ 315.5	$ 240.0	$ 130.3
Other comprehensive income (loss):
Amortization related to derivative securities, net of tax	2.3	2.4	2.4
Foreign currency translation adjustment	1.6	1.0	(1.7)
Total comprehensive income	319.4	243.4	131.0
Total comprehensive income attributable to controlling interests	290.6	227.3	137.1
Consolidated Funds
Other comprehensive income (loss):
Comprehensive income (loss) attributable to non-controlling interests in consolidated Funds	$ 28.8	$ 16.1	$ (6.1)