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Fair Value Measurements - Quantitative Information used in Valuing Level 3 Liabilities (Details) - Significant Unobservable Inputs (Level 3) $ in Millions | Sep. 30, 2024 USD ($) | Dec. 31, 2023 USD ($)
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Contingent payment obligations | Monte Carlo Simulation |  |
Quantitative information for Level 3 Fair Value Measurements Liabilities |  |
Fair Value | $ 6.5 | $ 14.7
Contingent payment obligations | Monte Carlo Simulation | Volatility | Minimum |  |
Quantitative information for Level 3 Fair Value Measurements Liabilities |  |
Affiliate equity purchase obligations, measurement input | 0.10 | 0.19
Contingent payment obligations | Monte Carlo Simulation | Volatility | Maximum |  |
Quantitative information for Level 3 Fair Value Measurements Liabilities |  |
Affiliate equity purchase obligations, measurement input | 0.18 | 0.25
Contingent payment obligations | Monte Carlo Simulation | Volatility | Weighted Average |  |
Quantitative information for Level 3 Fair Value Measurements Liabilities |  |
Affiliate equity purchase obligations, measurement input | 0.11 | 0.21
Contingent payment obligations | Monte Carlo Simulation | Discount rates |  |
Quantitative information for Level 3 Fair Value Measurements Liabilities |  |
Affiliate equity purchase obligations, measurement input | 0.05 | 0.06
Contingent payment obligations | Monte Carlo Simulation | Discount rates | Weighted Average |  |
Quantitative information for Level 3 Fair Value Measurements Liabilities |  |
Affiliate equity purchase obligations, measurement input | 0.05 | 0.06
Affiliate equity purchase obligations | Discounted cash flow |  |
Quantitative information for Level 3 Fair Value Measurements Liabilities |  |
Fair Value | $ 58.9 | $ 53.9
Affiliate equity purchase obligations | Discounted cash flow | Discount rates | Minimum |  |
Quantitative information for Level 3 Fair Value Measurements Liabilities |  |
Affiliate equity purchase obligations, measurement input | 0.14 | 0.14
Affiliate equity purchase obligations | Discounted cash flow | Discount rates | Maximum |  |
Quantitative information for Level 3 Fair Value Measurements Liabilities |  |
Affiliate equity purchase obligations, measurement input | 0.18 | 0.17
Affiliate equity purchase obligations | Discounted cash flow | Discount rates | Weighted Average |  |
Quantitative information for Level 3 Fair Value Measurements Liabilities |  |
Affiliate equity purchase obligations, measurement input | 0.15 | 0.14
Affiliate equity purchase obligations | Discounted cash flow | Growth rates | Minimum |  |
Quantitative information for Level 3 Fair Value Measurements Liabilities |  |
Affiliate equity purchase obligations, measurement input | (0.05) | (0.06)
Affiliate equity purchase obligations | Discounted cash flow | Growth rates | Maximum |  |
Quantitative information for Level 3 Fair Value Measurements Liabilities |  |
Affiliate equity purchase obligations, measurement input | 0.08 | 0.07
Affiliate equity purchase obligations | Discounted cash flow | Growth rates | Weighted Average |  |
Quantitative information for Level 3 Fair Value Measurements Liabilities |  |
Affiliate equity purchase obligations, measurement input | 0 | 0.01

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