Quarterly report [Sections 13 or 15(d)]

Fair Value Measurements - Reconciliation of Recurring Level 3 Fair Value Measurements (Details)

v3.25.1
Fair Value Measurements - Reconciliation of Recurring Level 3 Fair Value Measurements (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Net asset (liability) balance at beginning of period $ (8.6) $ 15.9
Change in fair value of Level 3 fair value measurements 3.7 1.2
Munger liability settled in cash 4.9  
Net asset (liability) balance at end of period $ 0.0 $ 17.1