Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 23.8	$ 40.4
Other comprehensive income (loss):
Amortization related to derivative securities, net of tax	1.6	0.6
Foreign currency translation adjustment	(0.7)	1.1
Total other comprehensive income	0.9	1.7
Comprehensive income attributable to non-controlling interests in consolidated Funds	0.0	13.4
Total comprehensive income attributable to controlling interests	$ 24.7	$ 28.7