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Fair Value of Financial Instruments - Additional Information (Details) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Long-term investments in convertible and redeemable preferred stock $ 105,287,000   $ 105,287,000   $ 199,965,000
Unrealized (loss) gain (50,100,000) $ (23,200,000) (96,600,000) $ 33,400,000  
Marketable equity investments 5,020,000   5,020,000   8,600,000
Recorded loss of marketable equity investments 1,800,000   3,600,000    
Sales of marketable equity investments 0   0    
Level 2          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Long-term investments in convertible and redeemable preferred stock 0   0   0
Marketable equity investments $ 0   $ 0   $ 0
2026 Notes | Level 2          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Debt instrument, interest rate (percentage) 0.00%   0.00%    
Fair value of convertible senior notes $ 488,900,000   $ 488,900,000    
2025 Notes | Level 2          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Debt instrument, interest rate (percentage) 0.00%   0.00%    
Fair value of convertible senior notes $ 825,000,000   $ 825,000,000