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Summary of Significant Accounting Policies - Additional Information (Detail)
 12 Months Ended
Dec. 31, 2018
USD ($)
shares
Summary Of Significant Accounting Policy [Line Items]  
Minimum net tangible assets $ 5,000,001
Federal depository insurance coverage 250,000
Income tax expense 1,339,439
Custodian Bank [Member]  
Summary Of Significant Accounting Policy [Line Items]  
Deposits held 835,544
Goldman Sachs Financial Square Treasury Investments Fund [Member]  
Summary Of Significant Accounting Policy [Line Items]  
Deposits held $ 694,883,137
Common Class A [Member]  
Summary Of Significant Accounting Policy [Line Items]  
Common stock shares, issued | shares 2,899,165
Shares subject to possible redemption | shares 66,100,835
Common Class A [Member] | IPO [Member]  
Summary Of Significant Accounting Policy [Line Items]  
Common stock shares, issued | shares 69,000,000
Offering costs $ 992,949
Underwriter discounts $ 37,950,000
Common Class A [Member] | Warrant [Member]  
Summary Of Significant Accounting Policy [Line Items]  
Shares excluded from the calculation of income per common share | shares 0
Common Class A [Member] | Warrant [Member] | Maximum [Member]  
Summary Of Significant Accounting Policy [Line Items]  
Outstanding warrants to purchase of common stock | shares 33,533,333