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Fair Value Measurements - Fair Value of the Company's Derivative Liability (Details)
3 Months Ended
Mar. 31, 2020
USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Beginning balance $ 8,819,023,000
Change in fair value 13,221,977,000
Ending balance $ 22,041,000,000