CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($)	6 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2018
Cash Flows from Operating Activities:
Net income (loss)	$ 608,749	$ (4,497,788)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Interest earned on marketable securities held in Trust Account	(976,806)	(5,702,227)
Unrealized (gain) loss on marketable securities held in Trust Account	(93,019)	11,821
Deferred taxes		(1,716,863)
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	(266,250)	151,371
Accounts payable and accrued expenses	45,410	8,975,362
Income taxes payable	313,598	525,648
Net cash used in operating activities	(368,318)	(2,252,676)
Cash Flows from Investing Activities:
Cash withdrawn from Trust Account		1,001,289
Investment of cash in Trust Account	(460,000,000)
Net cash provided by (used in) investing activities	(460,000,000)	1,001,289
Cash Flows from Financing Activities:
Proceeds from issuance of common stock to initial stockholder	25,000
Proceeds from sale of Units, net of underwriting discounts paid	450,800,000
Proceeds from sale of Private Placement Warrants	14,950,000
Proceeds from promissory note - related party	250,000
Repayment of promissory note - related party	(250,000)
Payment of offering costs	(832,830)
Net cash provided by financing activities	464,942,170
Net Change in Cash and Cash Equivalents	4,573,852	(1,251,387)
Cash and Cash Equivalents - Beginning	0	4,440,816
Cash and Cash Equivalents - Ending	4,573,852	3,189,429
Non-Cash investing and financing activities:
Initial classification of common stock subject to possible redemption	443,840,480
Change in value of common stock subject to possible redemption	610,438	$ (4,497,788)
Deferred underwriting fees	$ 16,100,000