Equity and Redeemable Preferred Stock - Inputs Used to Estimate Future Market Value (Details) - Series A Mandatory Convertible Preferred Stock	Jul. 31, 2020	Jul. 02, 2020
Expected Volatility | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input		0.50
Expected Volatility | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input		0.55
Cost of Equity | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input		0.14
Cost of Equity | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input		0.17
Dividend Yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0	0