Fair Value Measurement - Schedule of Assets Measured at Fair Value on Recurring Basis (Details) - Recurring [Member]	Jun. 30, 2019 USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investments and cash held in Trust Account	$ 406,337,705
Total	406,337,705
Quoted Prices in Active Markets (Level 1)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investments and cash held in Trust Account	406,337,705
Total	$ 406,337,705