Accounts Payable and Accrued Expenses (Details) - Consolidated Entity Excluding Consolidated Funds - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Accounts Payable And Accrued Expenses [Line Items]
Accounts payable	$ 6.8	$ 6.7
Accrued expenses	30.6	25.6
Accrued interest payable	0.2	5.6
Total accounts payable and accrued expenses	$ 37.6	$ 37.9