Fair Value Measurements - Quantitative Information used in Valuing Level 3 Liabilities (Details) - Level 3 $ in Millions	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Contingent Payment Obligations | Monte Carlo simulation
Quantitative information for Level 3 Fair Value Measurements Liabilities
Fair Value	$ 40.3	$ 0.0
Contingent Payment Obligations | Monte Carlo simulation | Volatility
Quantitative information for Level 3 Fair Value Measurements Liabilities
Obligations to related parties, measurement input		0
Contingent Payment Obligations | Monte Carlo simulation | Volatility | Minimum
Quantitative information for Level 3 Fair Value Measurements Liabilities
Obligations to related parties, measurement input	0.13
Contingent Payment Obligations | Monte Carlo simulation | Volatility | Maximum
Quantitative information for Level 3 Fair Value Measurements Liabilities
Obligations to related parties, measurement input	0.25
Contingent Payment Obligations | Monte Carlo simulation | Volatility | Weighted Average
Quantitative information for Level 3 Fair Value Measurements Liabilities
Obligations to related parties, measurement input	0.13	0
Contingent Payment Obligations | Monte Carlo simulation | Discount rates
Quantitative information for Level 3 Fair Value Measurements Liabilities
Obligations to related parties, measurement input		0
Contingent Payment Obligations | Monte Carlo simulation | Discount rates | Minimum
Quantitative information for Level 3 Fair Value Measurements Liabilities
Obligations to related parties, measurement input	0.01
Contingent Payment Obligations | Monte Carlo simulation | Discount rates | Maximum
Quantitative information for Level 3 Fair Value Measurements Liabilities
Obligations to related parties, measurement input	0.02
Contingent Payment Obligations | Monte Carlo simulation | Discount rates | Weighted Average
Quantitative information for Level 3 Fair Value Measurements Liabilities
Obligations to related parties, measurement input	0.02	0
Affiliate equity purchase obligations | Discounted cash flow
Quantitative information for Level 3 Fair Value Measurements Liabilities
Fair Value	$ 12.6	$ 22.0
Affiliate equity purchase obligations | Discounted cash flow | Discount rates | Minimum
Quantitative information for Level 3 Fair Value Measurements Liabilities
Obligations to related parties, measurement input	0.15	0.14
Affiliate equity purchase obligations | Discounted cash flow | Discount rates | Maximum
Quantitative information for Level 3 Fair Value Measurements Liabilities
Obligations to related parties, measurement input	0.18	0.16
Affiliate equity purchase obligations | Discounted cash flow | Discount rates | Weighted Average
Quantitative information for Level 3 Fair Value Measurements Liabilities
Obligations to related parties, measurement input	0.15	0.15
Affiliate equity purchase obligations | Discounted cash flow | Growth rates | Minimum
Quantitative information for Level 3 Fair Value Measurements Liabilities
Obligations to related parties, measurement input	(0.13)	(0.05)
Affiliate equity purchase obligations | Discounted cash flow | Growth rates | Maximum
Quantitative information for Level 3 Fair Value Measurements Liabilities
Obligations to related parties, measurement input	0.07	0.08
Affiliate equity purchase obligations | Discounted cash flow | Growth rates | Weighted Average
Quantitative information for Level 3 Fair Value Measurements Liabilities
Obligations to related parties, measurement input	0.02	0.03