Quarterly report pursuant to Section 13 or 15(d)

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

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Fair Value of Financial Instruments - Reconciliation of Recurring Level 3 Fair Value Measurements (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Net asset (liability) balance at beginning of period $ 17.1 $ 40.3 $ 15.9 $ 46.6
Change in fair value of Level 3 fair value measurements (1.0) (5.8) 0.2 (12.1)
Transfer of investment in BPC to acquisition purchase consideration (24.9)   (24.9)  
Net asset (liability) balance at end of period $ (8.8) $ 34.5 $ (8.8) $ 34.5