Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Summary Of Significant Accounting Policy [Line Items]
Minimum net tangible assets	$ 5,000,001
Federal depository insurance coverage	250,000
Income tax expense	2,112,834	$ 1,339,439	$ 0
Custodian Bank [Member]
Summary Of Significant Accounting Policy [Line Items]
Deposits held	955,457
Goldman Sachs Financial Square Treasury Investments Fund [Member]
Summary Of Significant Accounting Policy [Line Items]
Deposits held	$ 706,486,486
Common Class A [Member]
Summary Of Significant Accounting Policy [Line Items]
Common stock shares, issued	3,326,479	2,899,165
Shares subject to possible redemption	65,673,521	66,100,835
Common Class A [Member] | IPO [Member]
Summary Of Significant Accounting Policy [Line Items]
Common stock shares, issued	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	0
Common Class A [Member] | Warrant [Member] | Maximum [Member]
Summary Of Significant Accounting Policy [Line Items]
Outstanding warrants to purchase of common stock	33,533,317