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Fair Value Measurements - Quantitative Information used in Valuing Level 3 Liabilities (Details) - Significant Unobservable Inputs (Level 3) $ in Millions | Mar. 31, 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 | $ 9.6 | $ 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 | 0.19 | 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 | 0.13 | 0.21
Contingent Payment Obligations | Monte Carlo simulation | Discount rates | Minimum |  |
Quantitative information for Level 3 Fair Value Measurements Liabilities |  |
Affiliate equity purchase obligations, measurement input | 0.06 | 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 | 0.06 | 0.06
Affiliate Equity Purchase Obligations | Discounted cash flow |  |
Quantitative information for Level 3 Fair Value Measurements Liabilities |  |
Fair Value | $ 37.7 | $ 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 | 0.01 | 0.01

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- Definition Fair value of financial and nonfinancial obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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