Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 17.8	$ 229.5	$ 70.2	$ 857.2
Other comprehensive income (loss):
Amortization related to derivative securities, net of tax	0.6	0.6	2.8	1.8
Foreign currency translation adjustment	(2.5)	(0.9)	(5.6)	0.3
Total other comprehensive income (loss)	(1.9)	(0.3)	(2.8)	2.1
Comprehensive income attributable to non-controlling interests in consolidated Funds	0.0	0.0	0.0	68.0
Total comprehensive income attributable to controlling interests	$ 15.9	$ 229.2	$ 67.4	$ 791.3