v3.26.1
Fair Value Measurements - Schedule of Assets and Liabilities Measured on a Recurring Basis (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Financial Assets    
Investments in equity securities $ 43.7 $ 34.8
Investments in debt securities 63.0 50.0
Financial Liabilities    
Contingent payment obligations 0.0 0.0
Affiliate equity purchase obligations 200.4 161.2
Quoted Prices in Active Markets for Identical Assets (Level 1)    
Financial Assets    
Investments in equity securities 43.7 34.8
Investments in debt securities 0.0 0.0
Financial Liabilities    
Contingent payment obligations 0.0 0.0
Affiliate equity purchase obligations 0.0 0.0
Significant Other Observable Inputs (Level 2)    
Financial Assets    
Investments in equity securities 0.0 0.0
Investments in debt securities 48.1 50.0
Financial Liabilities    
Contingent payment obligations 0.0 0.0
Affiliate equity purchase obligations 0.0 0.0
Significant Unobservable Inputs (Level 3)    
Financial Assets    
Investments in equity securities 0.0 0.0
Investments in debt securities 14.9 0.0
Financial Liabilities    
Contingent payment obligations 0.0 0.0
Affiliate equity purchase obligations $ 200.4 $ 161.2