Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Statement of Comprehensive Income [Abstract]
Consolidated net income	$ 24.4	$ 23.8
Other comprehensive income:
Amortization related to derivative securities, net of tax	0.0	0.7
Foreign currency translation adjustment, net of tax	(0.1)	0.5
Total other comprehensive income (loss)	(0.1)	1.2
Total comprehensive income	24.3	25.0
Comprehensive income attributable to redeemable non-controlling interests in consolidated Funds	0.1	3.7
Total comprehensive income attributable to controlling interests	$ 24.2	$ 21.3